Alter IP range and share kvm

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

.gitattributes

@@ -0,0 +1,2 @@
+vendor/** linguist-generated=true
+Gopkg.lock linguist-generated=true

.github/ISSUE_TEMPLATE.md

@@ -8,10 +8,13 @@
 <!--- If describing a bug, tell us what happens instead of the expected behavior -->
 <!--- If suggesting a change/improvement, explain the difference from current behavior -->
 
-## Possible Solution
+## List all Possible Solutions
 <!--- Not obligatory, but suggest a fix/reason for the bug, -->
 <!--- or ideas how to implement the addition or change -->
 
+## List the one solution that you would recommend
+<!--- If you were to be on the hook for this change. -->
+
 ## Steps to Reproduce (for bugs)
 <!--- Provide a link to a live example, or an unambiguous set of steps to -->
 <!--- reproduce this bug. Include code to reproduce, if relevant -->
@@ -38,4 +41,6 @@ containerd -version
 uname -a
 
 cat /etc/os-release
+
+faasd version
 ```

.github/workflows/build.yaml

@@ -0,0 +1,36 @@
+name: build
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    env:
+      GO111MODULE: off
+    strategy:
+      matrix:
+        go-version: [1.15.x]
+        os: [ubuntu-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@master
+        with:
+          fetch-depth: 1
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ matrix.go-version }}
+
+      - name: test
+        run: make test
+      - name: dist
+        run: make dist
+      - name: prepare-test
+        run: make prepare-test
+      - name: test e2e
+        run: make test-e2e
+
+

.github/workflows/publish.yaml

@@ -0,0 +1,30 @@
+name: publish
+
+on:
+  push:
+    tags:
+      - '*'
+
+jobs:
+  publish:
+    strategy:
+      matrix:
+        go-version: [ 1.15.x ]
+        os: [ ubuntu-latest ]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@master
+        with:
+          fetch-depth: 1
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ matrix.go-version }}
+      - name: Make publish
+        run: make publish
+      - name: Upload release binaries
+        uses: alexellis/upload-assets@0.2.2
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
+        with:
+          asset_paths: '["./bin/faasd*"]'

.gitignore

@@ -7,3 +7,4 @@ basic-auth-user
 basic-auth-password
 /bin
 /secrets
+.vscode

.travis.yml

@@ -1,30 +0,0 @@
-sudo: required
-language: go
-
-go:
-- '1.13'
-
-addons:
-  apt:
-    packages:
-      - runc
-
-script:
-- make dist
-- make prepare-test
-- make test-e2e
-
-deploy:
-  provider: releases
-  api_key:
-    secure: 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
-  file:
-    - ./bin/faasd
-    - ./bin/faasd-armhf
-    - ./bin/faasd-arm64
-  skip_cleanup: true
-  on:
-    tags: true
-
-env: GO111MODULE=off
-

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-  name = "github.com/vishvananda/netlink"
-  packages = [
-    ".",
-    "nl",
-  ]
-  pruneopts = "UT"
-  revision = "f049be6f391489d3f374498fe0c8df8449258372"
-  version = "v1.1.0"
-
-[[projects]]
-  branch = "master"
-  digest = "1:975cb0c04431bf92e60b636a15897c4a3faba9f7dc04da505646630ac91d29d3"
-  name = "github.com/vishvananda/netns"
-  packages = ["."]
-  pruneopts = "UT"
-  revision = "0a2b9b5464df8343199164a0321edf3313202f7e"
-
-[[projects]]
-  digest = "1:aed53a5fa03c1270457e331cf8b7e210e3088a2278fec552c5c5d29c1664e161"
-  name = "go.opencensus.io"
-  packages = [
-    ".",
-    "internal",
-    "trace",
-    "trace/internal",
-    "trace/tracestate",
-  ]
-  pruneopts = "UT"
-  revision = "aad2c527c5defcf89b5afab7f37274304195a6b2"
-  version = "v0.22.2"
-
-[[projects]]
-  branch = "master"
-  digest = "1:676f320d34ccfa88bfa6d04bdf388ed7062af175355c805ef57ccda1a3f13432"
-  name = "golang.org/x/net"
-  packages = [
-    "context",
-    "context/ctxhttp",
-    "http/httpguts",
-    "http2",
-    "http2/hpack",
-    "idna",
-    "internal/timeseries",
-    "trace",
-  ]
-  pruneopts = "UT"
-  revision = "c0dbc17a35534bf2e581d7a942408dc936316da4"
-
-[[projects]]
-  digest = "1:d6b0cfc5ae30841c4b116ac589629f56f8add0955a39f11d8c0d06ca67f5b3d5"
-  name = "golang.org/x/sync"
-  packages = [
-    "errgroup",
-    "semaphore",
-  ]
-  pruneopts = "UT"
-  revision = "42b317875d0fa942474b76e1b46a6060d720ae6e"
-
-[[projects]]
-  branch = "master"
-  digest = "1:a76bac71eb452a046b47f82336ba792d8de988688a912f3fd0e8ec8e57fe1bb4"
-  name = "golang.org/x/sys"
-  packages = [
-    "unix",
-    "windows",
-  ]
-  pruneopts = "UT"
-  revision = "af0d71d358abe0ba3594483a5d519f429dbae3e9"
-
-[[projects]]
-  digest = "1:8d8faad6b12a3a4c819a3f9618cb6ee1fa1cfc33253abeeea8b55336721e3405"
-  name = "golang.org/x/text"
-  packages = [
-    "collate",
-    "collate/build",
-    "internal/colltab",
-    "internal/gen",
-    "internal/language",
-    "internal/language/compact",
-    "internal/tag",
-    "internal/triegen",
-    "internal/ucd",
-    "language",
-    "secure/bidirule",
-    "transform",
-    "unicode/bidi",
-    "unicode/cldr",
-    "unicode/norm",
-    "unicode/rangetable",
-  ]
-  pruneopts = "UT"
-  revision = "342b2e1fbaa52c93f31447ad2c6abc048c63e475"
-  version = "v0.3.2"
-
-[[projects]]
-  branch = "master"
-  digest = "1:583a0c80f5e3a9343d33aea4aead1e1afcc0043db66fdf961ddd1fe8cd3a4faf"
-  name = "google.golang.org/genproto"
-  packages = ["googleapis/rpc/status"]
-  pruneopts = "UT"
-  revision = "b31c10ee225f87dbb9f5f878ead9d64f34f5cbbb"
-
-[[projects]]
-  digest = "1:48eafc052e46b4ebbc7882553873cf6198203e528627cefc94dcaf8553addd19"
-  name = "google.golang.org/grpc"
-  packages = [
-    ".",
-    "balancer",
-    "balancer/base",
-    "balancer/roundrobin",
-    "binarylog/grpc_binarylog_v1",
-    "codes",
-    "connectivity",
-    "credentials",
-    "credentials/internal",
-    "encoding",
-    "encoding/proto",
-    "grpclog",
-    "health/grpc_health_v1",
-    "internal",
-    "internal/backoff",
-    "internal/balancerload",
-    "internal/binarylog",
-    "internal/channelz",
-    "internal/envconfig",
-    "internal/grpcrand",
-    "internal/grpcsync",
-    "internal/syscall",
-    "internal/transport",
-    "keepalive",
-    "metadata",
-    "naming",
-    "peer",
-    "resolver",
-    "resolver/dns",
-    "resolver/passthrough",
-    "serviceconfig",
-    "stats",
-    "status",
-    "tap",
-  ]
-  pruneopts = "UT"
-  revision = "6eaf6f47437a6b4e2153a190160ef39a92c7eceb"
-  version = "v1.23.0"
-
-[solve-meta]
-  analyzer-name = "dep"
-  analyzer-version = 1
-  input-imports = [
-    "github.com/alexellis/go-execute/pkg/v1",
-    "github.com/alexellis/k3sup/pkg/env",
-    "github.com/containerd/containerd",
-    "github.com/containerd/containerd/cio",
-    "github.com/containerd/containerd/containers",
-    "github.com/containerd/containerd/errdefs",
-    "github.com/containerd/containerd/namespaces",
-    "github.com/containerd/containerd/oci",
-    "github.com/containerd/containerd/remotes",
-    "github.com/containerd/containerd/remotes/docker",
-    "github.com/containerd/containerd/runtime/v2/logging",
-    "github.com/containerd/go-cni",
-    "github.com/coreos/go-systemd/journal",
-    "github.com/docker/cli/cli/config",
-    "github.com/docker/cli/cli/config/configfile",
-    "github.com/docker/distribution/reference",
-    "github.com/gorilla/mux",
-    "github.com/morikuni/aec",
-    "github.com/opencontainers/runtime-spec/specs-go",
-    "github.com/openfaas/faas-provider",
-    "github.com/openfaas/faas-provider/logs",
-    "github.com/openfaas/faas-provider/proxy",
-    "github.com/openfaas/faas-provider/types",
-    "github.com/openfaas/faas/gateway/requests",
-    "github.com/pkg/errors",
-    "github.com/sethvargo/go-password/password",
-    "github.com/spf13/cobra",
-    "github.com/vishvananda/netlink",
-    "github.com/vishvananda/netns",
-    "golang.org/x/sys/unix",
-  ]
-  solver-name = "gps-cdcl"
-  solver-version = 1

Gopkg.toml

@@ -1,47 +0,0 @@
-[prune]
-  go-tests = true
-  unused-packages = true
-
-[[constraint]]
-  name = "github.com/containerd/containerd"
-  version = "1.3.2"
-
-[[constraint]]
-  name = "github.com/morikuni/aec"
-  version = "1.0.0"
-
-[[constraint]]
-  name = "github.com/spf13/cobra"
-  version = "0.0.5"
-
-[[constraint]]
-  name = "github.com/alexellis/k3sup"
-  version = "0.7.1"
-
-[[constraint]]
-  name = "github.com/alexellis/go-execute"
-  version = "0.3.0"
-
-[[constraint]]
-  name = "github.com/gorilla/mux"
-  version = "1.7.3"
-
-[[constraint]]
-  name = "github.com/openfaas/faas"
-  version = "0.18.7"
-
-[[constraint]]
-  name = "github.com/sethvargo/go-password"
-  version = "0.1.3"
-
-[[constraint]]
-  branch = "master"
-  name = "github.com/containerd/go-cni"
-
-[[constraint]]
-  name = "github.com/openfaas/faas-provider"
-  version = "0.14.0"
-
-[[constraint]]
-  name = "github.com/docker/cli"
-  version = "19.3.5"

LICENSE

@@ -1,6 +1,8 @@
 MIT License
 
-Copyright (c) 2019 Alex Ellis
+Copyright (c) 2020 Alex Ellis
+Copyright (c) 2020 OpenFaaS Ltd
+Copyright (c) 2020 OpenFaas Author(s)
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

Makefile

@@ -1,21 +1,34 @@
 Version := $(shell git describe --tags --dirty)
 GitCommit := $(shell git rev-parse HEAD)
 LDFLAGS := "-s -w -X main.Version=$(Version) -X main.GitCommit=$(GitCommit)"
-CONTAINERD_VER := 1.3.2
-CNI_VERSION := v0.8.5
+CONTAINERD_VER := 1.3.4
+CNI_VERSION := v0.8.6
 ARCH := amd64
 
+export GO111MODULE=on
+
 .PHONY: all
-all: local
+all: test dist hashgen
+
+.PHONY: publish
+publish: dist hashgen
 
 local:
-	CGO_ENABLED=0 GOOS=linux go build -o bin/faasd
+	CGO_ENABLED=0 GOOS=linux go build -mod=vendor -o bin/faasd
+
+.PHONY: test
+test:
+	CGO_ENABLED=0 GOOS=linux go test -mod=vendor -ldflags $(LDFLAGS) ./...
 
 .PHONY: dist
 dist:
-	CGO_ENABLED=0 GOOS=linux go build -ldflags $(LDFLAGS) -a -installsuffix cgo -o bin/faasd
-	CGO_ENABLED=0 GOOS=linux GOARCH=arm GOARM=7 go build -ldflags $(LDFLAGS) -a -installsuffix cgo -o bin/faasd-armhf
-	CGO_ENABLED=0 GOOS=linux GOARCH=arm64 go build -ldflags $(LDFLAGS) -a -installsuffix cgo -o bin/faasd-arm64
+	CGO_ENABLED=0 GOOS=linux go build -mod=vendor -ldflags $(LDFLAGS) -a -installsuffix cgo -o bin/faasd
+	CGO_ENABLED=0 GOOS=linux GOARCH=arm GOARM=7 go build -mod=vendor -ldflags $(LDFLAGS) -a -installsuffix cgo -o bin/faasd-armhf
+	CGO_ENABLED=0 GOOS=linux GOARCH=arm64 go build -mod=vendor -ldflags $(LDFLAGS) -a -installsuffix cgo -o bin/faasd-arm64
+
+.PHONY: hashgen
+hashgen:
+	for f in bin/faasd*; do shasum -a 256 $$f > $$f.sha256; done
 
 .PHONY: prepare-test
 prepare-test:
@@ -25,14 +38,14 @@ prepare-test:
 	sudo /sbin/sysctl -w net.ipv4.conf.all.forwarding=1
 	sudo mkdir -p /opt/cni/bin
 	curl -sSL https://github.com/containernetworking/plugins/releases/download/$(CNI_VERSION)/cni-plugins-linux-$(ARCH)-$(CNI_VERSION).tgz | sudo tar -xz -C /opt/cni/bin
-	sudo cp $(GOPATH)/src/github.com/openfaas/faasd/bin/faasd /usr/local/bin/
-	cd $(GOPATH)/src/github.com/openfaas/faasd/ && sudo /usr/local/bin/faasd install
+	sudo cp bin/faasd /usr/local/bin/
+	sudo /usr/local/bin/faasd install
 	sudo systemctl status -l containerd --no-pager
 	sudo journalctl -u faasd-provider --no-pager
 	sudo systemctl status -l faasd-provider --no-pager
 	sudo systemctl status -l faasd --no-pager
 	curl -sSLf https://cli.openfaas.com | sudo sh
-	sleep 120 && sudo journalctl -u faasd --no-pager
+	echo "Sleeping for 2m" && sleep 120 && sudo journalctl -u faasd --no-pager
 
 .PHONY: test-e2e
 test-e2e:
@@ -48,5 +61,8 @@ test-e2e:
 	/usr/local/bin/faas-cli remove figlet
 	sleep 3
 	/usr/local/bin/faas-cli list
-	sleep 1
-	/usr/local/bin/faas-cli logs figlet --follow=false | grep Forking
+	sleep 3
+	journalctl -t openfaas-fn:figlet --no-pager
+
+# Removed due to timing issue in CI on GitHub Actions
+#	/usr/local/bin/faas-cli logs figlet --since 15m --follow=false | grep Forking

README.md

@@ -1,23 +1,57 @@
-# faasd - serverless with containerd and CNI  🐳
+# faasd - a lightweight & portable faas engine
 
-[![Build Status](https://travis-ci.com/openfaas/faasd.svg?branch=master)](https://travis-ci.com/openfaas/faasd)
+[![Build Status](https://github.com/openfaas/faasd/workflows/build/badge.svg?branch=master)](https://github.com/openfaas/faasd/actions)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![OpenFaaS](https://img.shields.io/badge/openfaas-serverless-blue.svg)](https://www.openfaas.com)
+![Downloads](https://img.shields.io/github/downloads/openfaas/faasd/total)
 
-faasd is the same OpenFaaS experience and ecosystem, but without Kubernetes. Functions and microservices can be deployed anywhere with reduced overheads whilst retaining the portability of containers and cloud-native tooling.
+faasd is [OpenFaaS](https://github.com/openfaas/) reimagined, but without the cost and complexity of Kubernetes. It runs on a single host with very modest requirements, making it fast and easy to manage. Under the hood it uses [containerd](https://containerd.io/) and [Container Networking Interface (CNI)](https://github.com/containernetworking/cni) along with the same core OpenFaaS components from the main project.
 
-## About faasd
+![faasd logo](docs/media/social.png)
 
-* is a single Golang binary
-* can be set-up and left alone to run your applications
-* is multi-arch, so works on Intel `x86_64` and ARM out the box
+## Use-cases and tutorials
+
+faasd is just another way to runOpenFaaS, so many things you read in the docs or in blog posts will work the same way.
+
+
+Videos and overviews:
+
+* [Exploring of serverless use-cases from commercial and personal users (YouTube)](https://www.youtube.com/watch?v=mzuXVuccaqI)
+* [Meet faasd. Look Ma’ No Kubernetes! (YouTube)](https://www.youtube.com/watch?v=ZnZJXI377ak)
+
+Use-cases and tutorials:
+
+* [Serverless Node.js that you can run anywhere](https://www.openfaas.com/blog/serverless-nodejs/)
+* [Simple Serverless with Golang Functions and Microservices](https://www.openfaas.com/blog/golang-serverless/)
+* [Build a Flask microservice with OpenFaaS](https://www.openfaas.com/blog/openfaas-flask/)
+* [Get started with Java 11 and Vert.x on Kubernetes with OpenFaaS](https://www.openfaas.com/blog/get-started-with-java-openjdk11/)
+* [Deploy to faasd via GitHub Actions](https://www.openfaas.com/blog/openfaas-functions-with-github-actions/)
+* [Scrape and automate websites with Puppeteer](https://www.openfaas.com/blog/puppeteer-scraping/)
+
+Additional resources:
+
+* The official handbook - [Serverless For Everyone Else](https://gumroad.com/l/serverless-for-everyone-else)
+* For reference: [OpenFaaS docs](https://docs.openfaas.com)
+* For use-cases and tutorials: [OpenFaaS blog](https://openfaas.com/blog/)
+* For self-paced learning: [OpenFaaS workshop](https://github.com/openfaas/workshop/)
+
+### About faasd
+
+* faasd is a static Golang binary
 * uses the same core components and ecosystem of OpenFaaS
+* uses containerd for its runtime and CNI for networking
+* is multi-arch, so works on Intel `x86_64` and ARM out the box
+* can run almost any other stateful container through its `docker-compose.yaml` file
+
+Most importantly, it's easy to manage so you can set it up and leave it alone to run your functions.
 
 ![demo](https://pbs.twimg.com/media/EPNQz00W4AEwDxM?format=jpg&name=small)
 
-> Demo of faasd running in KVM
+> Demo of faasd running asynchronous functions
 
-## What does faasd deploy?
+Watch the video: [faasd walk-through with cloud-init and Multipass](https://www.youtube.com/watch?v=WX1tZoSXy8E)
+
+### What does faasd deploy?
 
 * faasd - itself, and its [faas-provider](https://github.com/openfaas/faas-provider) for containerd - CRUD for functions and services, implements the OpenFaaS REST API
 * [Prometheus](https://github.com/prometheus/prometheus) - for monitoring of services, metrics, scaling and dashboards
@@ -25,7 +59,7 @@ faasd is the same OpenFaaS experience and ecosystem, but without Kubernetes. Fun
 * [OpenFaaS queue-worker for NATS](https://github.com/openfaas/nats-queue-worker) - run your invocations in the background without adding any code. See also: [asynchronous invocations](https://docs.openfaas.com/reference/triggers/#async-nats-streaming)
 * [NATS](https://nats.io) for asynchronous processing and queues
 
-You'll also need:
+faasd relies on industry-standard tools for running containers:
 
 * [CNI](https://github.com/containernetworking/plugins)
 * [containerd](https://github.com/containerd/containerd)
@@ -33,70 +67,84 @@ You'll also need:
 
 You can use the standard [faas-cli](https://github.com/openfaas/faas-cli) along with pre-packaged functions from *the Function Store*, or build your own using any OpenFaaS template.
 
-## Tutorials
+### When should you use faasd over OpenFaaS on Kubernetes?
 
-### Get started on DigitalOcean, or any other IaaS
+* To deploy microservices and functions that you can update and monitor remotely
+* When you don't have the bandwidth to learn or manage Kubernetes
+* To deploy embedded apps in IoT and edge use-cases
+* To distribute applications to a customer or client
+* You have a cost sensitive project - run faasd on a 1GB VM for 5-10 USD / mo or on your Raspberry Pi
+* When you just need a few functions or microservices, without the cost of a cluster
 
-If your IaaS supports `user_data` aka "cloud-init", then this guide is for you. If not, then checkout the approach and feel free to run each step manually.
+faasd does not create the same maintenance burden you'll find with maintaining, upgrading, and securing a Kubernetes cluster. You can deploy it and walk away, in the worst case, just deploy a new VM and deploy your functions again.
 
-* [Build a Serverless appliance with faasd](https://blog.alexellis.io/deploy-serverless-faasd-with-cloud-init/)
+## Learning faasd
 
-### Run locally on MacOS, Linux, or Windows with Multipass.run
+The faasd project is MIT licensed and open source, and you will find some documentation, blog posts and videos for free.
 
-* [Get up and running with your own faasd installation on your Mac/Ubuntu or Windows with cloud-config](https://gist.github.com/alexellis/6d297e678c9243d326c151028a3ad7b9)
+However, "Serverless For Everyone Else" is the official handbook and was written to contribute funds towards the upkeep and maintenance of the project.
 
-### Get started on armhf / Raspberry Pi
+### The official handbook and docs for faasd
 
-You can run this tutorial on your Raspberry Pi, or adapt the steps for a regular Linux VM/VPS host.
+<a href="https://gumroad.com/l/serverless-for-everyone-else">
+<img src="https://static-2.gumroad.com/res/gumroad/2028406193591/asset_previews/741f2ad46ff0a08e16aaf48d21810ba7/retina/social4.png" width="40%"></a>
 
-* [faasd - lightweight Serverless for your Raspberry Pi](https://blog.alexellis.io/faasd-for-lightweight-serverless/)
+You'll learn how to deploy code in any language, lift and shift Dockerfiles, run requests in queues, write background jobs and to integrate with databases. faasd packages the same code as OpenFaaS, so you get built-in metrics for your HTTP endpoints, a user-friendly CLI, pre-packaged functions and templates from the store and a UI.
 
-### Terraform for DigitalOcean
+Topics include:
 
-Automate everything within < 60 seconds and get a public URL and IP address back. Customise as required, or adapt to your preferred cloud such as AWS EC2.
+* Should you deploy to a VPS or Raspberry Pi?
+* Deploying your server with bash, cloud-init or terraform
+* Using a private container registry
+* Finding functions in the store
+* Building your first function with Node.js
+* Using environment variables for configuration
+* Using secrets from functions, and enabling authentication tokens
+* Customising templates
+* Monitoring your functions with Grafana and Prometheus
+* Scheduling invocations and background jobs
+* Tuning timeouts, parallelism, running tasks in the background
+* Adding TLS to faasd and custom domains for functions
+* Self-hosting on your Raspberry Pi
+* Adding a database for storage with InfluxDB and Postgresql
+* Troubleshooting and logs
+* CI/CD with GitHub Actions and multi-arch
+* Taking things further, community and case-studies
 
-* [Provision faasd 0.7.5 on DigitalOcean with Terraform 0.12.0](https://gist.github.com/alexellis/fd618bd2f957eb08c44d086ef2fc3906)
+View sample pages, reviews and testimonials on Gumroad:
 
-### A note on private repos / registries
+["Serverless For Everyone Else"](https://gumroad.com/l/serverless-for-everyone-else)
 
-To use private image repos, `~/.docker/config.json` needs to be copied to `/var/lib/faasd/.docker/config.json`.
+### Deploy faasd
 
-If you'd like to set up your own private registry, [see this tutorial](https://blog.alexellis.io/get-a-tls-enabled-docker-registry-in-5-minutes/).
+The easiest way to deploy faasd is with cloud-init, we give several examples below, and post IaaS platforms will accept "user-data" pasted into their UI, or via their API.
 
-Beware that running `docker login` on MacOS and Windows may create an empty file with your credentials stored in the system helper.
+For trying it out on MacOS or Windows, we recommend using [multipass](https://multipass.run) to run faasd in a VM.
 
-Alternatively, use you can use the `registry-login` command from the OpenFaaS Cloud bootstrap tool (ofc-bootstrap):
+If you don't use cloud-init, or have already created your Linux server you can use the installation script as per below:
 
 ```bash
-curl -sLSf https://raw.githubusercontent.com/openfaas-incubator/ofc-bootstrap/master/get.sh | sudo sh
+git clone https://github.com/openfaas/faasd --depth=1
+cd faasd
 
-ofc-bootstrap registry-login --username <your-registry-username> --password-stdin
-# (the enter your password and hit return)
-```
-The file will be created in `./credentials/`
-
-### Logs for functions
-
-You can view the logs of functions using `journalctl`:
-
-```bash
-journalctl -t openfaas-fn:FUNCTION_NAME
-
-
-faas-cli store deploy figlet
-journalctl -t openfaas-fn:figlet -f &
-echo logs | faas-cli invoke figlet
+./hack/install.sh
 ```
 
-### Manual / developer instructions
+> This approach also works for Raspberry Pi
 
-See [here for manual / developer instructions](docs/DEV.md)
+It's recommended that you do not install Docker on the same host as faasd, since 1) they may both use different versions of containerd and 2) docker's networking rules can disrupt faasd's networking. When using faasd - make your faasd server a faasd server, and build container image on your laptop or in a CI pipeline.
 
-## Getting help
+#### Deployment tutorials
 
-### Docs
+* [Use multipass on Windows, MacOS or Linux](/docs/MULTIPASS.md)
+* [Deploy to DigitalOcean with Terraform and TLS](https://www.openfaas.com/blog/faasd-tls-terraform/)
+* [Deploy to any IaaS with cloud-init](https://blog.alexellis.io/deploy-serverless-faasd-with-cloud-init/)
+* [Deploy faasd to your Raspberry Pi](https://blog.alexellis.io/faasd-for-lightweight-serverless/)
 
-The [OpenFaaS docs](https://docs.openfaas.com/) provide a wealth of information and are kept up to date with new features.
+Terraform scripts:
+
+* [Provision faasd on DigitalOcean with Terraform](docs/bootstrap/README.md)
+* [Provision faasd with TLS on DigitalOcean with Terraform](docs/bootstrap/digitalocean-terraform/README.md)
 
 ### Function and template store
 
@@ -104,62 +152,19 @@ For community functions see `faas-cli store --help`
 
 For templates built by the community see: `faas-cli template store list`, you can also use the `dockerfile` template if you just want to migrate an existing service without the benefits of using a template.
 
-### Workshop
-
-[The OpenFaaS workshop](https://github.com/openfaas/workshop/) is a set of 12 self-paced labs and provides a great starting point
-
 ### Community support
 
-An active community of almost 3000 users awaits you on Slack. Over 250 of those users are also contributors and help maintain the code.
+Commercial users and solo business owners should become OpenFaaS GitHub Sponsors to receive regular email updates on changes, tutorials and new features.
 
+If you are learning faasd, or want to share your use-case, you can join the OpenFaaS Slack community.
+
+* [Become an OpenFaaS GitHub Sponsor](https://github.com/sponsors/openfaas/)
 * [Join Slack](https://slack.openfaas.io/)
 
-## Backlog
+### Backlog, features and known issues
 
-### Supported operations
+For completed features, WIP and upcoming roadmap see:
 
-* `faas login`
-* `faas up`
-* `faas list`
-* `faas describe`
-* `faas deploy --update=true --replace=false`
-* `faas invoke --async`
-* `faas invoke`
-* `faas rm`
-* `faas store list/deploy/inspect`
-* `faas version`
-* `faas namespace`
-* `faas secret`
-* `faas logs`
-
-Scale from and to zero is also supported. On a Dell XPS with a small, pre-pulled image unpausing an existing task took 0.19s and starting a task for a killed function took 0.39s. There may be further optimizations to be gained.
-
-Other operations are pending development in the provider such as:
-
-* `faas auth` - supported for Basic Authentication, but OAuth2 & OIDC require a patch
-
-## Todo
-
-Pending:
-
-* [ ] Add support for using container images in third-party public registries
-* [ ] Add support for using container images in private third-party registries
-* [ ] Monitor and restart any of the core components at runtime if the container stops
-* [ ] Bundle/package/automate installation of containerd - [see bootstrap from k3s](https://github.com/rancher/k3s)
-* [ ] Provide ufw rules / example for blocking access to everything but a reverse proxy to the gateway container
-* [ ] Provide [simple Caddyfile example](https://blog.alexellis.io/https-inlets-local-endpoints/) in the README showing how to expose the faasd proxy on port 80/443 with TLS
-
-Done:
-
-* [x] Provide a cloud-config.txt file for automated deployments of `faasd`
-* [x] Inject / manage IPs between core components for service to service communication - i.e. so Prometheus can scrape the OpenFaaS gateway - done via `/etc/hosts` mount
-* [x] Add queue-worker and NATS
-* [x] Create faasd.service and faasd-provider.service
-* [x] Self-install / create systemd service via `faasd install`
-* [x] Restart containers upon restart of faasd
-* [x] Clear / remove containers and tasks with SIGTERM / SIGINT
-* [x] Determine armhf/arm64 containers to run for gateway
-* [x] Configure `basic_auth` to protect the OpenFaaS gateway and faasd-provider HTTP API
-* [x] Setup custom working directory for faasd `/var/lib/faasd/`
-* [x] Use CNI to create network namespaces and adapters
+See [ROADMAP.md](docs/ROADMAP.md)
 
+Are you looking to hack on faasd? Follow the [developer instructions](docs/DEV.md) for a manual installation, or use the `hack/install.sh` script and pick up from there.

cloud-config.txt

@@ -1,28 +1,30 @@
 #cloud-config
 ssh_authorized_keys:
+## Note: Replace with your own public key
   - ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC8Q/aUYUr3P1XKVucnO9mlWxOjJm+K01lHJR90MkHC9zbfTqlp8P7C3J26zKAuzHXOeF+VFxETRr6YedQKW9zp5oP7sN+F2gr/pO7GV3VmOqHMV7uKfyUQfq7H1aVzLfCcI7FwN2Zekv3yB7kj35pbsMa1Za58aF6oHRctZU6UWgXXbRxP+B04DoVU7jTstQ4GMoOCaqYhgPHyjEAS3DW0kkPW6HzsvJHkxvVcVlZ/wNJa1Ie/yGpzOzWIN0Ol0t2QT/RSWOhfzO1A2P0XbPuZ04NmriBonO9zR7T1fMNmmtTuK7WazKjQT3inmYRAqU6pe8wfX8WIWNV7OowUjUsv alex@alexr.local
 
 package_update: true
 
 packages:
  - runc
+ - git
 
 runcmd:
-- curl -sLSf https://github.com/containerd/containerd/releases/download/v1.3.2/containerd-1.3.2.linux-amd64.tar.gz > /tmp/containerd.tar.gz && tar -xvf /tmp/containerd.tar.gz -C /usr/local/bin/ --strip-components=1
-- curl -SLfs https://raw.githubusercontent.com/containerd/containerd/v1.3.2/containerd.service | tee /etc/systemd/system/containerd.service
+- curl -sLSf https://github.com/containerd/containerd/releases/download/v1.3.5/containerd-1.3.5-linux-amd64.tar.gz > /tmp/containerd.tar.gz && tar -xvf /tmp/containerd.tar.gz -C /usr/local/bin/ --strip-components=1
+- curl -SLfs https://raw.githubusercontent.com/containerd/containerd/v1.3.5/containerd.service | tee /etc/systemd/system/containerd.service
 - systemctl daemon-reload && systemctl start containerd
 - systemctl enable containerd
 - /sbin/sysctl -w net.ipv4.conf.all.forwarding=1
 - mkdir -p /opt/cni/bin
 - curl -sSL https://github.com/containernetworking/plugins/releases/download/v0.8.5/cni-plugins-linux-amd64-v0.8.5.tgz | tar -xz -C /opt/cni/bin
 - mkdir -p /go/src/github.com/openfaas/
-- cd /go/src/github.com/openfaas/ && git clone https://github.com/openfaas/faasd
-- curl -fSLs "https://github.com/openfaas/faasd/releases/download/0.7.7/faasd" --output "/usr/local/bin/faasd" && chmod a+x "/usr/local/bin/faasd"
+- cd /go/src/github.com/openfaas/ && git clone --depth 1 --branch 0.11.0 https://github.com/openfaas/faasd
+- curl -fSLs "https://github.com/openfaas/faasd/releases/download/0.11.0/faasd" --output "/usr/local/bin/faasd" && chmod a+x "/usr/local/bin/faasd"
 - cd /go/src/github.com/openfaas/faasd/ && /usr/local/bin/faasd install
 - systemctl status -l containerd --no-pager
 - journalctl -u faasd-provider --no-pager
 - systemctl status -l faasd-provider --no-pager
 - systemctl status -l faasd --no-pager
 - curl -sSLf https://cli.openfaas.com | sh
-- sleep 5 && journalctl -u faasd --no-pager
+- sleep 60 && journalctl -u faasd --no-pager
 - cat /var/lib/faasd/secrets/basic-auth-password | /usr/local/bin/faas-cli login --password-stdin

cmd/install.go

@@ -38,6 +38,10 @@ func runInstall(_ *cobra.Command, _ []string) error {
 		return errors.Wrap(basicAuthErr, "cannot create basic-auth-* files")
 	}
 
+	if err := cp("docker-compose.yaml", faasdwd); err != nil {
+		return err
+	}
+
 	if err := cp("prometheus.yml", faasdwd); err != nil {
 		return err
 	}
@@ -89,7 +93,10 @@ func runInstall(_ *cobra.Command, _ []string) error {
 		return err
 	}
 
-	fmt.Println(`Login with:
+	fmt.Println(`Check status with:
+  sudo journalctl -u faasd --lines 100 -f
+
+Login with:
   sudo cat /var/lib/faasd/secrets/basic-auth-password | faas-cli login -s`)
 
 	return nil

cmd/provider.go

@@ -47,6 +47,7 @@ func makeProviderCmd() *cobra.Command {
 		}
 
 		log.Printf("faasd-provider starting..\tService Timeout: %s\n", config.WriteTimeout.String())
+		printVersion()
 
 		wd, err := os.Getwd()
 		if err != nil {

cmd/root.go

@@ -46,7 +46,12 @@ var rootCommand = &cobra.Command{
 	Use:   "faasd",
 	Short: "Start faasd",
 	Long: `
-faasd - serverless without Kubernetes
+faasd - Serverless For Everyone Else
+
+Learn how to build, secure, and monitor functions with faasd with 
+the eBook:
+
+https://gumroad.com/l/serverless-for-everyone-else
 `,
 	RunE:         runRootCommand,
 	SilenceUsage: true,
@@ -69,11 +74,11 @@ var versionCmd = &cobra.Command{
 func parseBaseCommand(_ *cobra.Command, _ []string) {
 	printLogo()
 
-	fmt.Printf(
-		`faasd
-Commit: %s
-Version: %s
-`, GitCommit, GetVersion())
+	printVersion()
+}
+
+func printVersion() {
+	fmt.Printf("faasd version: %s\tcommit: %s\n", GetVersion(), GitCommit)
 }
 
 func printLogo() {

cmd/up.go

@@ -7,54 +7,61 @@ import (
 	"os"
 	"os/signal"
 	"path"
-	"strings"
 	"sync"
 	"syscall"
 	"time"
 
 	"github.com/pkg/errors"
-
-	"github.com/alexellis/k3sup/pkg/env"
-	"github.com/openfaas/faasd/pkg"
 	"github.com/sethvargo/go-password/password"
 	"github.com/spf13/cobra"
+	flag "github.com/spf13/pflag"
+
+	"github.com/openfaas/faasd/pkg"
 )
 
+// upConfig are the CLI flags used by the `faasd up` command to deploy the faasd service
+type upConfig struct {
+	// composeFilePath is the path to the compose file specifying the faasd service configuration
+	// See https://compose-spec.io/ for more information about the spec,
+	//
+	// currently, this must be the name of a file in workingDir, which is set to the value of
+	// `faasdwd = /var/lib/faasd`
+	composeFilePath string
+
+	// working directory to assume the compose file is in, should be faasdwd.
+	// this is not configurable but may be in the future.
+	workingDir string
+}
+
+func init() {
+	configureUpFlags(upCmd.Flags())
+}
+
 var upCmd = &cobra.Command{
 	Use:   "up",
 	Short: "Start faasd",
 	RunE:  runUp,
 }
 
-const containerSecretMountDir = "/run/secrets"
+func runUp(cmd *cobra.Command, _ []string) error {
 
-func runUp(_ *cobra.Command, _ []string) error {
+	printVersion()
 
-	clientArch, clientOS := env.GetClientArch()
-
-	if clientOS != "Linux" {
-		return fmt.Errorf("You can only use faasd on Linux")
-	}
-	clientSuffix := ""
-	switch clientArch {
-	case "x86_64":
-		clientSuffix = ""
-		break
-	case "armhf":
-	case "armv7l":
-		clientSuffix = "-armhf"
-		break
-	case "arm64":
-	case "aarch64":
-		clientSuffix = "-arm64"
+	cfg, err := parseUpFlags(cmd)
+	if err != nil {
+		return err
 	}
 
-	if basicAuthErr := makeBasicAuthFiles(path.Join(path.Join(faasdwd, "secrets"))); basicAuthErr != nil {
+	services, err := loadServiceDefinition(cfg)
+	if err != nil {
+		return err
+	}
+
+	basicAuthErr := makeBasicAuthFiles(path.Join(cfg.workingDir, "secrets"))
+	if basicAuthErr != nil {
 		return errors.Wrap(basicAuthErr, "cannot create basic-auth-* files")
 	}
 
-	services := makeServiceDefinitions(clientSuffix)
-
 	start := time.Now()
 	supervisor, err := pkg.NewSupervisor("/run/containerd/containerd.sock")
 	if err != nil {
@@ -64,20 +71,15 @@ func runUp(_ *cobra.Command, _ []string) error {
 	log.Printf("Supervisor created in: %s\n", time.Since(start).String())
 
 	start = time.Now()
-
-	err = supervisor.Start(services)
-
-	if err != nil {
+	if err := supervisor.Start(services); err != nil {
 		return err
 	}
-
 	defer supervisor.Close()
 
 	log.Printf("Supervisor init done in: %s\n", time.Since(start).String())
 
 	shutdownTimeout := time.Second * 1
 	timeout := time.Second * 60
-	proxyDoneCh := make(chan bool)
 
 	wg := sync.WaitGroup{}
 	wg.Add(1)
@@ -94,40 +96,38 @@ func runUp(_ *cobra.Command, _ []string) error {
 			fmt.Println(err)
 		}
 
-		// Close proxy
-		proxyDoneCh <- true
+		// TODO: close proxies
 		time.AfterFunc(shutdownTimeout, func() {
 			wg.Done()
 		})
 	}()
 
-	gatewayURLChan := make(chan string, 1)
-	proxyPort := 8080
-	proxy := pkg.NewProxy(proxyPort, timeout)
-	go proxy.Start(gatewayURLChan, proxyDoneCh)
+	localResolver := pkg.NewLocalResolver(path.Join(cfg.workingDir, "hosts"))
+	go localResolver.Start()
 
-	go func() {
-		wd, _ := os.Getwd()
+	proxies := map[uint32]*pkg.Proxy{}
+	for _, svc := range services {
+		for _, port := range svc.Ports {
 
-		time.Sleep(3 * time.Second)
-
-		fileData, fileErr := ioutil.ReadFile(path.Join(wd, "hosts"))
-		if fileErr != nil {
-			log.Println(fileErr)
-			return
-		}
-
-		host := ""
-		lines := strings.Split(string(fileData), "\n")
-		for _, line := range lines {
-			if strings.Index(line, "gateway") > -1 {
-				host = line[:strings.Index(line, "\t")]
+			listenPort := port.Port
+			if _, ok := proxies[listenPort]; ok {
+				return fmt.Errorf("port %d already allocated", listenPort)
 			}
+
+			hostIP := "0.0.0.0"
+			if len(port.HostIP) > 0 {
+				hostIP = port.HostIP
+			}
+
+			upstream := fmt.Sprintf("%s:%d", svc.Name, port.TargetPort)
+			proxies[listenPort] = pkg.NewProxy(upstream, listenPort, hostIP, timeout, localResolver)
 		}
-		log.Printf("[up] Sending %s to proxy\n", host)
-		gatewayURLChan <- host + ":8080"
-		close(gatewayURLChan)
-	}()
+	}
+
+	// TODO: track proxies for later cancellation when receiving sigint/term
+	for _, v := range proxies {
+		go v.Start()
+	}
 
 	wg.Wait()
 	return nil
@@ -135,7 +135,7 @@ func runUp(_ *cobra.Command, _ []string) error {
 
 func makeBasicAuthFiles(wd string) error {
 
-	pwdFile := wd + "/basic-auth-password"
+	pwdFile := path.Join(wd, "basic-auth-password")
 	authPassword, err := password.Generate(63, 10, 0, false, true)
 
 	if err != nil {
@@ -147,7 +147,7 @@ func makeBasicAuthFiles(wd string) error {
 		return err
 	}
 
-	userFile := wd + "/basic-auth-user"
+	userFile := path.Join(wd, "basic-auth-user")
 	err = makeFile(userFile, "admin")
 	if err != nil {
 		return err
@@ -156,6 +156,8 @@ func makeBasicAuthFiles(wd string) error {
 	return nil
 }
 
+// makeFile will create a file with the specified content if it does not exist yet.
+// if the file already exists, the method is a noop.
 func makeFile(filePath, fileContents string) error {
 	_, err := os.Stat(filePath)
 	if err == nil {
@@ -169,105 +171,35 @@ func makeFile(filePath, fileContents string) error {
 	}
 }
 
-func makeServiceDefinitions(archSuffix string) []pkg.Service {
-	wd, _ := os.Getwd()
+// load the docker compose file and then parse it as supervisor Services
+// the logic for loading the compose file comes from the compose reference implementation
+// https://github.com/compose-spec/compose-ref/blob/master/compose-ref.go#L353
+func loadServiceDefinition(cfg upConfig) ([]pkg.Service, error) {
 
-	return []pkg.Service{
-		{
-			Name:  "basic-auth-plugin",
-			Image: "docker.io/openfaas/basic-auth-plugin:0.18.10" + archSuffix,
-			Env: []string{
-				"port=8080",
-				"secret_mount_path=" + containerSecretMountDir,
-				"user_filename=basic-auth-user",
-				"pass_filename=basic-auth-password",
-			},
-			Mounts: []pkg.Mount{
-				{
-					Src:  path.Join(path.Join(wd, "secrets"), "basic-auth-password"),
-					Dest: path.Join(containerSecretMountDir, "basic-auth-password"),
-				},
-				{
-					Src:  path.Join(path.Join(wd, "secrets"), "basic-auth-user"),
-					Dest: path.Join(containerSecretMountDir, "basic-auth-user"),
-				},
-			},
-			Caps: []string{"CAP_NET_RAW"},
-			Args: nil,
-		},
-		{
-			Name:  "nats",
-			Env:   []string{""},
-			Image: "docker.io/library/nats-streaming:0.11.2",
-			Caps:  []string{},
-			Args:  []string{"/nats-streaming-server", "-m", "8222", "--store=memory", "--cluster_id=faas-cluster"},
-		},
-		{
-			Name:  "prometheus",
-			Env:   []string{},
-			Image: "docker.io/prom/prometheus:v2.14.0",
-			Mounts: []pkg.Mount{
-				{
-					Src:  path.Join(wd, "prometheus.yml"),
-					Dest: "/etc/prometheus/prometheus.yml",
-				},
-			},
-			Caps: []string{"CAP_NET_RAW"},
-		},
-		{
-			Name: "gateway",
-			Env: []string{
-				"basic_auth=true",
-				"functions_provider_url=http://faasd-provider:8081/",
-				"direct_functions=false",
-				"read_timeout=60s",
-				"write_timeout=60s",
-				"upstream_timeout=65s",
-				"faas_nats_address=nats",
-				"faas_nats_port=4222",
-				"auth_proxy_url=http://basic-auth-plugin:8080/validate",
-				"auth_proxy_pass_body=false",
-				"secret_mount_path=" + containerSecretMountDir,
-				"scale_from_zero=true",
-			},
-			Image: "docker.io/openfaas/gateway:0.18.8" + archSuffix,
-			Mounts: []pkg.Mount{
-				{
-					Src:  path.Join(path.Join(wd, "secrets"), "basic-auth-password"),
-					Dest: path.Join(containerSecretMountDir, "basic-auth-password"),
-				},
-				{
-					Src:  path.Join(path.Join(wd, "secrets"), "basic-auth-user"),
-					Dest: path.Join(containerSecretMountDir, "basic-auth-user"),
-				},
-			},
-			Caps: []string{"CAP_NET_RAW"},
-		},
-		{
-			Name: "queue-worker",
-			Env: []string{
-				"faas_nats_address=nats",
-				"faas_nats_port=4222",
-				"gateway_invoke=true",
-				"faas_gateway_address=gateway",
-				"ack_wait=5m5s",
-				"max_inflight=1",
-				"write_debug=false",
-				"basic_auth=true",
-				"secret_mount_path=" + containerSecretMountDir,
-			},
-			Image: "docker.io/openfaas/queue-worker:0.9.0",
-			Mounts: []pkg.Mount{
-				{
-					Src:  path.Join(path.Join(wd, "secrets"), "basic-auth-password"),
-					Dest: path.Join(containerSecretMountDir, "basic-auth-password"),
-				},
-				{
-					Src:  path.Join(path.Join(wd, "secrets"), "basic-auth-user"),
-					Dest: path.Join(containerSecretMountDir, "basic-auth-user"),
-				},
-			},
-			Caps: []string{"CAP_NET_RAW"},
-		},
+	serviceConfig, err := pkg.LoadComposeFile(cfg.workingDir, cfg.composeFilePath)
+	if err != nil {
+		return nil, err
 	}
+
+	return pkg.ParseCompose(serviceConfig)
+}
+
+// ConfigureUpFlags will define the flags for the `faasd up` command. The flag struct, configure, and
+// parse are split like this to simplify testability.
+func configureUpFlags(flags *flag.FlagSet) {
+	flags.StringP("file", "f", "docker-compose.yaml", "compose file specifying the faasd service configuration")
+}
+
+// ParseUpFlags will load the flag values into an upFlags object. Errors will be underlying
+// Get errors from the pflag library.
+func parseUpFlags(cmd *cobra.Command) (upConfig, error) {
+	parsed := upConfig{}
+	path, err := cmd.Flags().GetString("file")
+	if err != nil {
+		return parsed, errors.Wrap(err, "can not parse compose file path flag")
+	}
+
+	parsed.composeFilePath = path
+	parsed.workingDir = faasdwd
+	return parsed, err
 }

docker-compose.yaml

@@ -0,0 +1,99 @@
+version: "3.7"
+services:
+  basic-auth-plugin:
+    image: ghcr.io/openfaas/basic-auth:0.20.5
+    environment:
+      - port=8080
+      - secret_mount_path=/run/secrets
+      - user_filename=basic-auth-user
+      - pass_filename=basic-auth-password
+    volumes:
+      # we assume cwd == /var/lib/faasd
+      - type: bind
+        source: ./secrets/basic-auth-password
+        target: /run/secrets/basic-auth-password
+      - type: bind
+        source: ./secrets/basic-auth-user
+        target: /run/secrets/basic-auth-user
+    cap_add:
+      - CAP_NET_RAW
+
+  nats:
+    image: docker.io/library/nats-streaming:0.11.2
+    command:
+      - "/nats-streaming-server"
+      - "-m"
+      - "8222"
+      - "--store=memory"
+      - "--cluster_id=faas-cluster"
+    # ports:
+    #    - "127.0.0.1:8222:8222"
+
+  prometheus:
+    image: docker.io/prom/prometheus:v2.14.0
+    volumes:
+      - type: bind
+        source: ./prometheus.yml
+        target: /etc/prometheus/prometheus.yml
+    cap_add:
+      - CAP_NET_RAW
+    ports:
+       - "127.0.0.1:9090:9090"
+
+  gateway:
+    image: ghcr.io/openfaas/gateway:0.20.11
+    environment:
+      - basic_auth=true
+      - functions_provider_url=http://faasd-provider:8081/
+      - direct_functions=false
+      - read_timeout=60s
+      - write_timeout=60s
+      - upstream_timeout=65s
+      - faas_nats_address=nats
+      - faas_nats_port=4222
+      - auth_proxy_url=http://basic-auth-plugin:8080/validate
+      - auth_proxy_pass_body=false
+      - secret_mount_path=/run/secrets
+      - scale_from_zero=true
+      - function_namespace=openfaas-fn
+    volumes:
+      # we assume cwd == /var/lib/faasd
+      - type: bind
+        source: ./secrets/basic-auth-password
+        target: /run/secrets/basic-auth-password
+      - type: bind
+        source: ./secrets/basic-auth-user
+        target: /run/secrets/basic-auth-user
+    cap_add:
+      - CAP_NET_RAW
+    depends_on:
+      - basic-auth-plugin
+      - nats
+      - prometheus
+    ports:
+       - "8080:8080"
+
+  queue-worker:
+    image: docker.io/openfaas/queue-worker:0.11.2
+    environment:
+      - faas_nats_address=nats
+      - faas_nats_port=4222
+      - gateway_invoke=true
+      - faas_gateway_address=gateway
+      - ack_wait=5m5s
+      - max_inflight=1
+      - write_debug=false
+      - basic_auth=true
+      - secret_mount_path=/run/secrets
+    volumes:
+      # we assume cwd == /var/lib/faasd
+      - type: bind
+        source: ./secrets/basic-auth-password
+        target: /run/secrets/basic-auth-password
+      - type: bind
+        source: ./secrets/basic-auth-user
+        target: /run/secrets/basic-auth-user
+    cap_add:
+      - CAP_NET_RAW
+    depends_on:
+      - nats

docs/DEV.md

@@ -1,9 +1,11 @@
-## Manual installation of faasd for development
+## Instructions for hacking on faasd itself
 
 > Note: if you're just wanting to try out faasd, then it's likely that you're on the wrong page. This is a detailed set of instructions for those wanting to contribute or customise faasd. Feel free to go back to the homepage and pick a tutorial instead.
 
 ### Pre-reqs
 
+> It's recommended that you do not install Docker on the same host as faasd, since 1) they may both use different versions of containerd and 2) docker's networking rules can disrupt faasd's networking. When using faasd - make your faasd server a faasd server, and build container image on your laptop or in a CI pipeline.
+
 * Linux
 
     PC / Cloud - any Linux that containerd works on should be fair game, but faasd is tested with Ubuntu 18.04
@@ -14,19 +16,76 @@
 
     For Windows users, install [Git Bash](https://git-scm.com/downloads) along with multipass or vagrant. You can also use WSL1 or WSL2 which provides a Linux environment.
 
-    You will also need [containerd v1.3.2](https://github.com/containerd/containerd) and the [CNI plugins v0.8.5](https://github.com/containernetworking/plugins)
+    You will also need [containerd v1.3.5](https://github.com/containerd/containerd) and the [CNI plugins v0.8.5](https://github.com/containernetworking/plugins)
 
     [faas-cli](https://github.com/openfaas/faas-cli) is optional, but recommended.
 
+If you're using multipass, then allocate sufficient resources:
+
+```bash
+multipass launch \
+  --mem 4G \
+  -c 2 \
+  -n faasd
+
+# Then access its shell
+multipass shell faasd
+```
+
+### Get runc
+
+```bash
+sudo apt update \
+  && sudo apt install -qy \
+    runc \
+    bridge-utils \
+    make
+```
+
+### Get faas-cli (optional)
+
+Having `faas-cli` on your dev machine is useful for testing and debug.
+
+```bash
+curl -sLS https://cli.openfaas.com | sudo sh
+```
+
+#### Install the CNI plugins:
+
+* For PC run `export ARCH=amd64`
+* For RPi/armhf run `export ARCH=arm`
+* For arm64 run `export ARCH=arm64`
+
+Then run:
+
+```bash
+export ARCH=amd64
+export CNI_VERSION=v0.8.5
+
+sudo mkdir -p /opt/cni/bin
+curl -sSL https://github.com/containernetworking/plugins/releases/download/${CNI_VERSION}/cni-plugins-linux-${ARCH}-${CNI_VERSION}.tgz | sudo tar -xz -C /opt/cni/bin
+
+# Make a config folder for CNI definitions
+sudo mkdir -p /etc/cni/net.d
+
+# Make an initial loopback configuration
+sudo sh -c 'cat >/etc/cni/net.d/99-loopback.conf <<-EOF
+{
+    "cniVersion": "0.3.1",
+    "type": "loopback"
+}
+EOF'
+```
+
 ### Get containerd
 
 You have three options - binaries for PC, binaries for armhf, or build from source.
 
 * Install containerd `x86_64` only
 
-```sh
-export VER=1.3.2
-curl -sLSf https://github.com/containerd/containerd/releases/download/v$VER/containerd-$VER.linux-amd64.tar.gz > /tmp/containerd.tar.gz \
+```bash
+export VER=1.3.5
+curl -sSL https://github.com/containerd/containerd/releases/download/v$VER/containerd-$VER-linux-amd64.tar.gz > /tmp/containerd.tar.gz \
   && sudo tar -xvf /tmp/containerd.tar.gz -C /usr/local/bin/ --strip-components=1
 
 containerd -version
@@ -36,20 +95,20 @@ containerd -version
 
     Building `containerd` on armhf is extremely slow, so I've provided binaries for you.
 
-    ```sh
-    curl -sSL https://github.com/alexellis/containerd-armhf/releases/download/v1.3.2/containerd.tgz | sudo tar -xvz --strip-components=2 -C /usr/local/bin/
+    ```bash
+    curl -sSL https://github.com/alexellis/containerd-armhf/releases/download/v1.3.5/containerd.tgz | sudo tar -xvz --strip-components=2 -C /usr/local/bin/
     ```
 
 * Or clone / build / install [containerd](https://github.com/containerd/containerd) from source:
 
-    ```sh
+    ```bash
     export GOPATH=$HOME/go/
     mkdir -p $GOPATH/src/github.com/containerd
     cd $GOPATH/src/github.com/containerd
     git clone https://github.com/containerd/containerd
     cd containerd
     git fetch origin --tags
-    git checkout v1.3.2
+    git checkout v1.3.5
 
     make
     sudo make install
@@ -59,8 +118,12 @@ containerd -version
 
 #### Ensure containerd is running
 
-```sh
-curl -sLS https://raw.githubusercontent.com/containerd/containerd/master/containerd.service > /tmp/containerd.service
+```bash
+curl -sLS https://raw.githubusercontent.com/containerd/containerd/v1.3.5/containerd.service > /tmp/containerd.service
+
+# Extend the timeouts for low-performance VMs
+echo "[Manager]" | tee -a /tmp/containerd.service
+echo "DefaultTimeoutStartSec=3m" | tee -a /tmp/containerd.service
 
 sudo cp /tmp/containerd.service /lib/systemd/system/
 sudo systemctl enable containerd
@@ -69,9 +132,9 @@ sudo systemctl daemon-reload
 sudo systemctl restart containerd
 ```
 
-Or run ad-hoc:
+Or run ad-hoc. This step can be useful for exploring why containerd might fail to start.
 
-```sh
+```bash
 sudo containerd &
 ```
 
@@ -79,13 +142,13 @@ sudo containerd &
 
 > This is required to allow containers in containerd to access the Internet via your computer's primary network interface.
 
-```sh
+```bash
 sudo /sbin/sysctl -w net.ipv4.conf.all.forwarding=1
 ```
 
 Make the setting permanent:
 
-```sh
+```bash
 echo "net.ipv4.conf.all.forwarding=1" | sudo tee -a /etc/sysctl.conf
 ```
 
@@ -93,7 +156,7 @@ echo "net.ipv4.conf.all.forwarding=1" | sudo tee -a /etc/sysctl.conf
 
 #### Get build packages
 
-```sh
+```bash
 sudo apt update \
   && sudo apt install -qy \
     runc \
@@ -105,11 +168,11 @@ You may find alternative package names for CentOS and other Linux distributions.
 
 #### Install Go 1.13 (x86_64)
 
-```sh
-curl -sSLf https://dl.google.com/go/go1.13.6.linux-amd64.tar.gz > go.tgz
+```bash
+curl -SLf https://golang.org/dl/go1.16.linux-amd64.tar.gz > /tmp/go.tgz
 sudo rm -rf /usr/local/go/
 sudo mkdir -p /usr/local/go/
-sudo tar -xvf go.tgz -C /usr/local/go/ --strip-components=1
+sudo tar -xvf /tmp/go.tgz -C /usr/local/go/ --strip-components=1
 
 export GOPATH=$HOME/go/
 export PATH=$PATH:/usr/local/go/bin/
@@ -119,15 +182,15 @@ go version
 
 You should also add the following to `~/.bash_profile`:
 
-```sh
-export GOPATH=$HOME/go/
-export PATH=$PATH:/usr/local/go/bin/
+```bash
+echo "export GOPATH=\$HOME/go/" | tee -a $HOME/.bash_profile
+echo "export PATH=\$PATH:/usr/local/go/bin/" | tee -a $HOME/.bash_profile
 ```
 
 #### Or on Raspberry Pi (armhf)
 
-```sh
-curl -SLsf https://dl.google.com/go/go1.13.6.linux-armv6l.tar.gz > go.tgz
+```bash
+curl -SLsf https://golang.org/dl/go1.16.linux-armv6l.tar.gz > go.tgz
 sudo rm -rf /usr/local/go/
 sudo mkdir -p /usr/local/go/
 sudo tar -xvf go.tgz -C /usr/local/go/ --strip-components=1
@@ -138,25 +201,9 @@ export PATH=$PATH:/usr/local/go/bin/
 go version
 ```
 
-#### Install the CNI plugins:
-
-* For PC run `export ARCH=amd64`
-* For RPi/armhf run `export ARCH=arm`
-* For arm64 run `export ARCH=arm64`
-
-Then run:
-
-```sh
-export ARCH=amd64
-export CNI_VERSION=v0.8.5
-
-sudo mkdir -p /opt/cni/bin
-curl -sSL https://github.com/containernetworking/plugins/releases/download/${CNI_VERSION}/cni-plugins-linux-${ARCH}-${CNI_VERSION}.tgz | sudo tar -xz -C /opt/cni/bin
-```
-
 #### Clone faasd and its systemd unit files
 
-```sh
+```bash
 mkdir -p $GOPATH/src/github.com/openfaas/
 cd $GOPATH/src/github.com/openfaas/
 git clone https://github.com/openfaas/faasd
@@ -164,36 +211,39 @@ git clone https://github.com/openfaas/faasd
 
 #### Build `faasd` from source (optional)
 
-```sh
+```bash
 cd $GOPATH/src/github.com/openfaas/faasd
 cd faasd
 make local
+
+# Install the binary
+sudo cp bin/faasd /usr/local/bin
 ```
 
-#### Build and run `faasd` (binaries)
+#### Or, download and run `faasd` (binaries)
 
-```sh
+```bash
 # For x86_64
-sudo curl -fSLs "https://github.com/openfaas/faasd/releases/download/0.8.0/faasd" \
-    -o "/usr/local/bin/faasd" \
-    && sudo chmod a+x "/usr/local/bin/faasd"
+export SUFFIX=""
 
 # armhf
-sudo curl -fSLs "https://github.com/openfaas/faasd/releases/download/0.8.0/faasd-armhf" \
-    -o "/usr/local/bin/faasd" \
-    && sudo chmod a+x "/usr/local/bin/faasd"
+export SUFFIX="-armhf"
 
 # arm64
-sudo curl -fSLs "https://github.com/openfaas/faasd/releases/download/0.8.0/faasd-arm64" \
-    -o "/usr/local/bin/faasd" \
-    && sudo chmod a+x "/usr/local/bin/faasd"
+export SUFFIX="-arm64"
+
+# Then download
+curl -fSLs "https://github.com/openfaas/faasd/releases/download/0.11.0/faasd$SUFFIX" \
+    -o "/tmp/faasd" \
+    && chmod +x "/tmp/faasd" 
+sudo mv /tmp/faasd /usr/local/bin/
 ```
 
 #### Install `faasd`
 
-```sh
-# Install with systemd
-sudo cp bin/faasd /usr/local/bin
+This step installs faasd as a systemd unit file, creates files in `/var/lib/faasd`, and writes out networking configuration for the CNI bridge networking plugin.
+
+```bash
 sudo faasd install
 
 2020/02/17 17:38:06 Writing to: "/var/lib/faasd/secrets/basic-auth-password"
@@ -206,13 +256,13 @@ You can now log in either from this machine or a remote machine using the OpenFa
 
 Check that faasd is ready:
 
-```
+```bash
 sudo journalctl -u faasd
 ```
 
 You should see output like:
 
-```
+```bash
 Feb 17 17:46:35 gold-survive faasd[4140]: 2020/02/17 17:46:35 Starting faasd proxy on 8080
 Feb 17 17:46:35 gold-survive faasd[4140]: Gateway: 10.62.0.5:8080
 Feb 17 17:46:35 gold-survive faasd[4140]: 2020/02/17 17:46:35 [proxy] Wait for done
@@ -221,7 +271,7 @@ Feb 17 17:46:35 gold-survive faasd[4140]: 2020/02/17 17:46:35 [proxy] Begin list
 
 To get the CLI for the command above run:
 
-```sh
+```bash
 curl -sSLf https://cli.openfaas.com | sudo sh
 ```
 
@@ -277,7 +327,7 @@ faasd provider
 
 Look in `hosts` in the current working folder or in `/var/lib/faasd/` to get the IP for the gateway or Prometheus
 
-```sh
+```bash
 127.0.0.1      localhost
 10.62.0.1      faasd-provider
 

docs/MULTIPASS.md

@@ -0,0 +1,141 @@
+# Tutorial - faasd with multipass
+
+## Get up and running with your own faasd installation on your Mac
+
+[multipass from Canonical](https://multipass.run) is like Docker Desktop, but for getting Ubuntu instead of a Docker daemon. It works on MacOS, Linux, and Windows with the same consistent UX. It's not fully open-source, and uses some proprietary add-ons / binaries, but is free to use.
+
+For Linux using Ubuntu, you can install the packages directly, or use `sudo snap install multipass --classic` and follow this tutorial. For Raspberry Pi, [see my tutorial here](https://blog.alexellis.io/faasd-for-lightweight-serverless/).
+
+John McCabe has also tested faasd on Windows with multipass, [see his tweet](https://twitter.com/mccabejohn/status/1221899154672308224).
+
+## Use-case:
+
+Try out [faasd](https://github.com/openfaas/faasd) in a single command using a cloud-config file to get a VM which has:
+
+* port 22 for administration and
+* port 8080 for the OpenFaaS REST API.
+
+![Example](https://pbs.twimg.com/media/EPNQz00W4AEwDxM?format=jpg&name=medium)
+
+The above screenshot is [from my tweet](https://twitter.com/alexellisuk/status/1221408788395298819/), feel free to comment there.
+
+It took me about 2-3 minutes to run through everything after installing multipass.
+
+## Let's start the tutorial
+
+* Get [multipass.run](https://multipass.run)
+
+* Get my cloud-config.txt file
+
+```sh
+curl -sSLO https://raw.githubusercontent.com/openfaas/faasd/master/cloud-config.txt
+```
+
+* Update the SSH key to match your own, edit `cloud-config.txt`:
+
+Replace the 2nd line with the contents of `~/.ssh/id_rsa.pub`:
+
+```
+ssh_authorized_keys:
+  - ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC8Q/aUYUr3P1XKVucnO9mlWxOjJm+K01lHJR90MkHC9zbfTqlp8P7C3J26zKAuzHXOeF+VFxETRr6YedQKW9zp5oP7sN+F2gr/pO7GV3VmOqHMV7uKfyUQfq7H1aVzLfCcI7FwN2Zekv3yB7kj35pbsMa1Za58aF6oHRctZU6UWgXXbRxP+B04DoVU7jTstQ4GMoOCaqYhgPHyjEAS3DW0kkPW6HzsvJHkxvVcVlZ/wNJa1Ie/yGpzOzWIN0Ol0t2QT/RSWOhfzO1A2P0XbPuZ04NmriBonO9zR7T1fMNmmtTuK7WazKjQT3inmYRAqU6pe8wfX8WIWNV7OowUjUsv alex@alexr.local
+```
+
+* Boot the VM
+
+```sh
+multipass launch --cloud-init cloud-config.txt  --name faasd
+```
+
+* Get the VM's IP and connect with `ssh`
+
+```sh
+multipass info faasd
+Name:           faasd
+State:          Running
+IPv4:           192.168.64.14
+Release:        Ubuntu 18.04.3 LTS
+Image hash:     a720c34066dc (Ubuntu 18.04 LTS)
+Load:           0.79 0.19 0.06
+Disk usage:     1.1G out of 4.7G
+Memory usage:   145.6M out of 985.7M
+```
+
+Set the variable `IP`:
+
+```
+export IP="192.168.64.14"
+```
+
+You can also try to use `jq` to get the IP into a variable:
+
+```sh
+export IP=$(multipass info faasd --format json| jq -r '.info.faasd.ipv4[0]')
+```
+
+Connect to the IP listed:
+
+```sh
+ssh ubuntu@$IP
+```
+
+Log out once you know it works.
+
+* Let's capture the authentication password into a file for use with `faas-cli`
+
+```
+ssh ubuntu@$IP "sudo cat /var/lib/faasd/secrets/basic-auth-password" > basic-auth-password
+```
+
+## Try faasd (OpenFaaS)
+
+* Login from your laptop (the host)
+
+```
+export OPENFAAS_URL=http://$IP:8080
+cat basic-auth-password | faas-cli login -s
+```
+
+* Deploy a function and invoke it
+
+```
+faas-cli store deploy figlet --env write_timeout=1s
+echo "faasd" | faas-cli invoke figlet
+
+faas-cli describe figlet
+
+# Run async
+curl -i -d "faasd-async" $OPENFAAS_URL/async-function/figlet
+
+# Run async with a callback
+
+curl -i -d "faasd-async" -H "X-Callback-Url: http://some-request-bin.com/path" $OPENFAAS_URL/async-function/figlet
+```
+
+You can also checkout the other store functions: `faas-cli store list`
+
+* Try the UI
+
+Head over to the UI from your laptop and remember that your password is in the `basic-auth-password` file. The username is `admin`:
+
+```
+echo http://$IP:8080
+```
+
+* Stop/start the instance
+
+```sh
+multipass stop faasd
+```
+
+* Delete, if you want to:
+
+```
+multipass delete --purge faasd
+```
+
+You now have a faasd appliance on your Mac. You can also use this cloud-init file with public cloud like AWS or DigitalOcean.
+
+* If you want a public IP for your faasd VM, then just head over to [inlets.dev](https://inlets.dev/)
+* Try my more complete walk-through / tutorial with Raspberry Pi, or run the same steps on your multipass VM, including how to develop your own functions and services - https://blog.alexellis.io/faasd-for-lightweight-serverless/
+* You might also like [Building containers without Docker](https://blog.alexellis.io/building-containers-without-docker/)
+* Star/fork [faasd](https://github.com/openfaas/faasd) on GitHub

docs/ROADMAP.md

@@ -0,0 +1,116 @@
+# faasd backlog and features
+
+## Supported operations
+
+* `faas login`
+* `faas up`
+* `faas list`
+* `faas describe`
+* `faas deploy --update=true --replace=false`
+* `faas invoke --async`
+* `faas invoke`
+* `faas rm`
+* `faas store list/deploy/inspect`
+* `faas version`
+* `faas namespace`
+* `faas secret`
+* `faas logs`
+* `faas auth` - supported for Basic Authentication and OpenFaaS PRO with OIDC and Single-sign On.
+
+Scale from and to zero is also supported. On a Dell XPS with a small, pre-pulled image unpausing an existing task took 0.19s and starting a task for a killed function took 0.39s. There may be further optimizations to be gained.
+
+## Constraints vs OpenFaaS on Kubernetes
+
+faasd suits certain use-cases as mentioned in the README file, for those who want a solution which can scale out horizontally with minimum effort, Kubernetes or K3s is a valid option.
+
+### One replica per function
+
+Functions only support one replica, so cannot scale horizontally, but can scale vertically.
+
+Workaround: deploy one uniquely named function per replica.
+
+### Scale from zero may give a non-200
+
+When scaling from zero there is no health check implemented, so the request may arrive before your HTTP server is ready to serve a request, and therefore give a non-200 code.
+
+Workaround: Do not scale to zero, or have your client retry HTTP calls.
+
+### No clustering is available
+
+No clustering is available in faasd, however you can still apply fault-tolerance and high availability techniques.
+
+Workaround: deploy multiple faasd instances and use a hardware or software load-balancer. Take regular VM/host snapshots or backups.
+
+### No rolling updates
+
+When running `faas-cli deploy`, your old function is removed before the new one is started. This may cause a small amount of downtime, depending on the timeouts and grace periods you set.
+
+Workaround: deploy uniquely named functions per version, and switch an Ingress or Reverse Proxy record to point at a new version once it is ready.
+
+## Known issues
+
+### Non 200 HTTP status from the gateway upon first use
+
+This issue appears to happen sporadically and only for some users.
+
+If you get a non 200 HTTP code from the gateway, or caddy after installing faasd, check the logs of faasd:
+
+```bash
+sudo journalctl -u faasd
+```
+
+If you see the following error:
+
+```
+unable to dial to 10.62.0.5:8080, error: dial tcp 10.62.0.5:8080: connect: no route to host
+```
+
+Restart the faasd service with:
+
+```bash
+sudo systemctl restart faasd
+```
+
+## Backlog
+
+Should have:
+
+* [ ] Resolve core services from functions by populating/sharing `/etc/hosts` between `faasd` and `faasd-provider`
+* [ ] Docs or examples on how to use the various connectors and connector-sdk
+* [ ] Monitor and restart any of the core components at runtime if the container stops
+* [ ] Asynchronous deletion instead of synchronous
+
+Nice to Have:
+
+* [ ] Terraform for AWS (in-progress)
+* [ ] Total memory limits - if a node has 1GB of RAM, don't allow more than 1000MB of RAM to be reserved via limits
+* [ ] Offer live rolling-updates, with zero downtime - requires moving to IDs vs. names for function containers
+* [ ] Multiple replicas per function
+
+### Completed
+
+* [x] Provide a cloud-init configuration for faasd bootstrap
+* [x] Configure core services from a docker-compose.yaml file
+* [x] Store and fetch logs from the journal
+* [x] Add support for using container images in third-party public registries
+* [x] Add support for using container images in private third-party registries
+* [x] Provide a cloud-config.txt file for automated deployments of `faasd`
+* [x] Inject / manage IPs between core components for service to service communication - i.e. so Prometheus can scrape the OpenFaaS gateway - done via `/etc/hosts` mount
+* [x] Add queue-worker and NATS
+* [x] Create faasd.service and faasd-provider.service
+* [x] Self-install / create systemd service via `faasd install`
+* [x] Restart containers upon restart of faasd
+* [x] Clear / remove containers and tasks with SIGTERM / SIGINT
+* [x] Determine armhf/arm64 containers to run for gateway
+* [x] Configure `basic_auth` to protect the OpenFaaS gateway and faasd-provider HTTP API
+* [x] Setup custom working directory for faasd `/var/lib/faasd/`
+* [x] Use CNI to create network namespaces and adapters
+* [x] Optionally expose core services from the docker-compose.yaml file, locally or to all adapters.
+* [x] ~~[containerd can't pull image from Github Docker Package Registry](https://github.com/containerd/containerd/issues/3291)~~ ghcr.io support
+* [x] Provide [simple Caddyfile example](https://blog.alexellis.io/https-inlets-local-endpoints/) in the README showing how to expose the faasd proxy on port 80/443 with TLS
+* [x] Annotation support
+* [x] Hard memory limits for functions
+* [x] Terraform for DigitalOcean
+* [x] [Store and retrieve annotations in function spec](https://github.com/openfaas/faasd/pull/86) - in progress
+* [x] An installer for faasd and dependencies - runc, containerd
+

docs/bootstrap/.gitignore

@@ -0,0 +1,3 @@
+/.terraform/
+/terraform.tfstate
+/terraform.tfstate.backup

docs/bootstrap/README.md

@@ -0,0 +1,20 @@
+# Bootstrap faasd on Digitalocean
+
+1) [Sign up to DigitalOcean](https://www.digitalocean.com/?refcode=2962aa9e56a1&utm_campaign=Referral_Invite&utm_medium=Referral_Program&utm_source=CopyPaste)
+2) [Download Terraform](https://www.terraform.io)
+3) Clone this gist using the URL from the address bar
+4) Run `terraform init`
+5) Run `terraform apply -var="do_token=$(cat $HOME/digitalocean-access-token)"`
+6) View the output for the login command and gateway URL i.e.
+
+```
+gateway_url = http://178.128.39.201:8080/
+login_cmd = faas-cli login -g http://178.128.39.201:8080/ -p rvIU49CEcFcHmqxj
+password = rvIU49CEcFcHmqxj
+```
+
+Note that the user-data may take a couple of minutes to come up since it will be pulling in various components and preparing the machine.
+
+A single host with 1GB of RAM will be deployed for you, to remove at a later date simply use `terraform destroy`.
+
+If required, you can remove the VM via `terraform destroy -var="do_token=$(cat $HOME/digitalocean-access-token)"`

docs/bootstrap/cloud-config.tpl

@@ -0,0 +1,31 @@
+#cloud-config
+ssh_authorized_keys:
+## Note: Replace with your own public key
+  - ${ssh_key}
+
+package_update: true
+
+packages:
+ - runc
+ - git
+
+runcmd:
+- curl -sLSf https://github.com/containerd/containerd/releases/download/v1.3.5/containerd-1.3.5-linux-amd64.tar.gz > /tmp/containerd.tar.gz && tar -xvf /tmp/containerd.tar.gz -C /usr/local/bin/ --strip-components=1
+- curl -SLfs https://raw.githubusercontent.com/containerd/containerd/v1.3.5/containerd.service | tee /etc/systemd/system/containerd.service
+- systemctl daemon-reload && systemctl start containerd
+- /sbin/sysctl -w net.ipv4.conf.all.forwarding=1
+- mkdir -p /opt/cni/bin
+- curl -sSL https://github.com/containernetworking/plugins/releases/download/v0.8.5/cni-plugins-linux-amd64-v0.8.5.tgz | tar -xz -C /opt/cni/bin
+- mkdir -p /go/src/github.com/openfaas/
+- mkdir -p /var/lib/faasd/secrets/
+- echo ${gw_password} > /var/lib/faasd/secrets/basic-auth-password
+- echo admin > /var/lib/faasd/secrets/basic-auth-user
+- cd /go/src/github.com/openfaas/ && git clone --depth 1 --branch 0.11.0 https://github.com/openfaas/faasd
+- curl -fSLs "https://github.com/openfaas/faasd/releases/download/0.11.0/faasd" --output "/usr/local/bin/faasd" && chmod a+x "/usr/local/bin/faasd"
+- cd /go/src/github.com/openfaas/faasd/ && /usr/local/bin/faasd install
+- systemctl status -l containerd --no-pager
+- journalctl -u faasd-provider --no-pager
+- systemctl status -l faasd-provider --no-pager
+- systemctl status -l faasd --no-pager
+- curl -sSLf https://cli.openfaas.com | sh
+- sleep 5 && journalctl -u faasd --no-pager

docs/bootstrap/digitalocean-terraform/.gitignore

@@ -0,0 +1,3 @@
+/.terraform/
+/terraform.tfstate
+/terraform.tfstate.backup

docs/bootstrap/digitalocean-terraform/README.md

@@ -0,0 +1,38 @@
+# Bootstrap faasd with TLS support on Digitalocean
+
+1) [Sign up to DigitalOcean](https://www.digitalocean.com/?refcode=2962aa9e56a1&utm_campaign=Referral_Invite&utm_medium=Referral_Program&utm_source=CopyPaste)
+2) [Download Terraform](https://www.terraform.io)
+3) Clone this gist using the URL from the address bar
+4) Run `terraform init`
+5) Configure terraform variables as needed by updating the `main.tfvars` file:
+
+   | Variable     | Description         | Default         |
+   | ------------ | ------------------- | --------------- |
+   | `do_token` | Digitalocean API token | None |
+   | `do_domain` | Public domain used for the faasd gateway | None |
+   | `do_subdomain` | Public subdomain used for the faasd gateway | `faasd` |
+   | `letsencrypt_email` | Email used by when ordering TLS certificate from Letsencrypt | `""` |
+   | `do_create_record` | When set to `true`, a new DNS record will be created. This works only if your domain (`do_domain`) is managed by Digitalocean | `false` |
+   | `do_region` | Digitalocean region for creating the droplet | `fra1` |
+   | `ssh_key_file` | Path to public SSH key file |`~/.ssh/id_rsa.pub` |
+
+> Environment variables can also be used to set terraform variables when running the `terraform apply` command using the format `TF_VAR_name`.
+
+6) Run `terraform apply`
+   1) Add `-var-file=main.tfvars` if you have set the variables in `main.tfvars`.
+   2) OR [use environment variables](https://www.terraform.io/docs/commands/environment-variables.html#tf_var_name) for setting the terraform variables when running the `apply` command
+
+7) View the output for the login command and gateway URL i.e.
+
+```
+droplet_ip = 178.128.39.201
+gateway_url = https://faasd.example.com/
+login_cmd = faas-cli login -g https://faasd.example.com/ -p rvIU49CEcFcHmqxj
+password = rvIU49CEcFcHmqxj
+```
+8) Use your browser to access the OpenFaaS interface
+
+Note that the user-data may take a couple of minutes to come up since it will be pulling in various components and preparing the machine. 
+Also take into consideration the DNS propagation time for the new DNS record.
+
+A single host with 1GB of RAM will be deployed for you, to remove at a later date simply use `terraform destroy`.

docs/bootstrap/digitalocean-terraform/cloud-config.tpl

@@ -0,0 +1,57 @@
+#cloud-config
+ssh_authorized_keys:
+  - ${ssh_key}
+
+groups:
+  - caddy
+
+users:
+  - name: caddy
+    gecos: Caddy web server
+    primary_group: caddy
+    groups: caddy
+    shell: /usr/sbin/nologin
+    homedir: /var/lib/caddy
+
+write_files:
+- content: |
+    {
+      email ${letsencrypt_email}
+    }
+
+    ${faasd_domain_name} {
+      reverse_proxy 127.0.0.1:8080
+    }
+
+  path: /etc/caddy/Caddyfile
+
+package_update: true
+
+packages:
+ - runc
+
+runcmd:
+- curl -sLSf https://github.com/containerd/containerd/releases/download/v1.3.5/containerd-1.3.5-linux-amd64.tar.gz > /tmp/containerd.tar.gz && tar -xvf /tmp/containerd.tar.gz -C /usr/local/bin/ --strip-components=1
+- curl -SLfs https://raw.githubusercontent.com/containerd/containerd/v1.3.5/containerd.service | tee /etc/systemd/system/containerd.service
+- systemctl daemon-reload && systemctl start containerd
+- /sbin/sysctl -w net.ipv4.conf.all.forwarding=1
+- mkdir -p /opt/cni/bin
+- curl -sSL https://github.com/containernetworking/plugins/releases/download/v0.8.5/cni-plugins-linux-amd64-v0.8.5.tgz | tar -xz -C /opt/cni/bin
+- mkdir -p /go/src/github.com/openfaas/
+- mkdir -p /var/lib/faasd/secrets/
+- echo ${gw_password} > /var/lib/faasd/secrets/basic-auth-password
+- echo admin > /var/lib/faasd/secrets/basic-auth-user
+- cd /go/src/github.com/openfaas/ && git clone --depth 1 --branch 0.11.0 https://github.com/openfaas/faasd
+- curl -fSLs "https://github.com/openfaas/faasd/releases/download/0.11.0/faasd" --output "/usr/local/bin/faasd" && chmod a+x "/usr/local/bin/faasd"
+- cd /go/src/github.com/openfaas/faasd/ && /usr/local/bin/faasd install
+- systemctl status -l containerd --no-pager
+- journalctl -u faasd-provider --no-pager
+- systemctl status -l faasd-provider --no-pager
+- systemctl status -l faasd --no-pager
+- curl -sSLf https://cli.openfaas.com | sh
+- sleep 5 && journalctl -u faasd --no-pager
+- wget https://github.com/caddyserver/caddy/releases/download/v2.1.1/caddy_2.1.1_linux_amd64.tar.gz -O /tmp/caddy.tar.gz && tar -zxvf /tmp/caddy.tar.gz -C /usr/bin/ caddy
+- wget https://raw.githubusercontent.com/caddyserver/dist/master/init/caddy.service -O /etc/systemd/system/caddy.service
+- systemctl daemon-reload
+- systemctl enable caddy
+- systemctl start caddy

docs/bootstrap/digitalocean-terraform/main.tf

@@ -0,0 +1,86 @@
+terraform {
+  required_version = ">= 0.12"
+}
+
+variable "do_token" {
+  description = "Digitalocean API token"
+}
+variable "do_domain" {
+  description = "Your public domain"
+}
+variable "do_subdomain" {
+  description = "Your public subdomain"
+  default = "faasd"
+}
+variable "letsencrypt_email" {
+  description = "Email used to order a certificate from Letsencrypt"
+}
+variable "do_create_record" {
+  default     = false
+  description = "Whether to create a DNS record on Digitalocean"
+}
+variable "do_region" {
+  default     = "fra1"
+  description = "The Digitalocean region where the faasd droplet will be created."
+}
+variable "ssh_key_file" {
+  default     = "~/.ssh/id_rsa.pub"
+  description = "Path to the SSH public key file"
+}
+
+provider "digitalocean" {
+  token = var.do_token
+}
+
+data "local_file" "ssh_key"{
+  filename = pathexpand(var.ssh_key_file)
+}
+
+resource "random_password" "password" {
+  length = 16
+  special = true
+  override_special = "_-#"
+}
+
+data "template_file" "cloud_init" {
+  template = "${file("cloud-config.tpl")}"
+    vars = {
+      gw_password=random_password.password.result,
+      ssh_key=data.local_file.ssh_key.content,
+      faasd_domain_name="${var.do_subdomain}.${var.do_domain}"
+      letsencrypt_email=var.letsencrypt_email
+    }
+}
+
+resource "digitalocean_droplet" "faasd" {
+  region = var.do_region
+  image  = "ubuntu-18-04-x64"
+  name   = "faasd"
+  size = "s-1vcpu-1gb"
+  user_data = data.template_file.cloud_init.rendered
+}
+
+resource "digitalocean_record" "faasd" {
+  domain = var.do_domain
+  type   = "A"
+  name   = "faasd"
+  value  = digitalocean_droplet.faasd.ipv4_address
+  # Only creates record if do_create_record is true
+  count  = var.do_create_record == true ? 1 : 0
+}
+
+output "droplet_ip" {
+  value = digitalocean_droplet.faasd.ipv4_address
+}
+
+output "gateway_url" {
+  value = "https://${var.do_subdomain}.${var.do_domain}/"
+}
+
+output "password" {
+    value = random_password.password.result
+}
+
+output "login_cmd" {
+  value = "faas-cli login -g https://${var.do_subdomain}.${var.do_domain}/ -p ${random_password.password.result}"
+}

docs/bootstrap/digitalocean-terraform/main.tfvars

@@ -0,0 +1,4 @@
+do_token          = ""
+do_domain         = ""
+do_subdomain      = ""
+letsencrypt_email = ""

docs/bootstrap/main.tf

@@ -0,0 +1,56 @@
+terraform {
+  required_version = ">= 0.12"
+}
+
+variable "do_token" {}
+
+variable "ssh_key_file" {
+  default     = "~/.ssh/id_rsa.pub"
+  description = "Path to the SSH public key file"
+}
+
+provider "digitalocean" {
+  token = var.do_token	
+}
+
+resource "random_password" "password" {
+  length = 16
+  special = true
+  override_special = "_-#"
+}
+
+data "local_file" "ssh_key"{
+  filename = pathexpand(var.ssh_key_file)
+}
+
+data "template_file" "cloud_init" {
+  template = "${file("cloud-config.tpl")}"
+    vars = {
+      gw_password=random_password.password.result,
+      ssh_key=data.local_file.ssh_key.content,
+    }
+}
+
+resource "digitalocean_droplet" "faasd" {
+
+  region = "lon1"
+  image  = "ubuntu-18-04-x64"
+  name   = "faasd"
+  # Plans: https://developers.digitalocean.com/documentation/changelog/api-v2/new-size-slugs-for-droplet-plan-changes/
+  #size   = "512mb"
+  size = "s-1vcpu-1gb"
+  user_data = data.template_file.cloud_init.rendered
+}
+
+output "password" {
+    value = random_password.password.result
+}
+
+output "gateway_url" {
+  value = "http://${digitalocean_droplet.faasd.ipv4_address}:8080/"
+}
+
+output "login_cmd" {
+  value = "faas-cli login -g http://${digitalocean_droplet.faasd.ipv4_address}:8080/ -p ${random_password.password.result}"
+}
+

go.mod

@@ -0,0 +1,50 @@
+module github.com/openfaas/faasd
+
+go 1.15
+
+require (
+	github.com/Microsoft/hcsshim v0.8.7-0.20190820203702-9e921883ac92 // indirect
+	github.com/alexellis/go-execute v0.0.0-20200124154445-8697e4e28c5e
+	github.com/alexellis/k3sup v0.0.0-20200607084134-629c0bc6b50f
+	github.com/compose-spec/compose-go v0.0.0-20200528042322-36d8ce368e05
+	github.com/containerd/cgroups v0.0.0-20201119153540-4cbc285b3327 // indirect
+	github.com/containerd/containerd v1.3.2
+	github.com/containerd/continuity v0.0.0-20190815185530-f2a389ac0a02 // indirect
+	github.com/containerd/fifo v0.0.0-20190816180239-bda0ff6ed73c // indirect
+	github.com/containerd/go-cni v0.0.0-20200107172653-c154a49e2c75
+	github.com/containerd/ttrpc v1.0.0 // indirect
+	github.com/containerd/typeurl v1.0.0 // indirect
+	github.com/coreos/go-systemd v0.0.0-20191104093116-d3cd4ed1dbcf
+	github.com/docker/cli v0.0.0-20191105005515-99c5edceb48d
+	github.com/docker/distribution v2.7.1-0.20190205005809-0d3efadf0154+incompatible
+	github.com/docker/docker v17.12.0-ce-rc1.0.20191113042239-ea84732a7725+incompatible // indirect
+	github.com/docker/docker-credential-helpers v0.6.3 // indirect
+	github.com/docker/go-events v0.0.0-20170721190031-9461782956ad // indirect
+	github.com/gogo/googleapis v1.2.0 // indirect
+	github.com/golang/groupcache v0.0.0-20191027212112-611e8accdfc9 // indirect
+	github.com/gorilla/mux v1.8.0
+	github.com/imdario/mergo v0.3.9 // indirect
+	github.com/morikuni/aec v1.0.0
+	github.com/opencontainers/go-digest v1.0.0-rc1.0.20180430190053-c9281466c8b2 // indirect
+	github.com/opencontainers/image-spec v1.0.1 // indirect
+	github.com/opencontainers/runc v1.0.0-rc9 // indirect
+	github.com/opencontainers/runtime-spec v1.0.2
+	github.com/openfaas/faas v0.0.0-20201205125747-9bbb25e3c7c4
+	github.com/openfaas/faas-provider v0.17.3
+	github.com/pkg/errors v0.9.1
+	github.com/prometheus/procfs v0.2.0 // indirect
+	github.com/sethvargo/go-password v0.1.3
+	github.com/spf13/cobra v0.0.5
+	github.com/spf13/pflag v1.0.5
+	github.com/syndtr/gocapability v0.0.0-20180916011248-d98352740cb2 // indirect
+	github.com/vishvananda/netlink v1.1.0
+	github.com/vishvananda/netns v0.0.0-20191106174202-0a2b9b5464df
+	github.com/xeipuuv/gojsonpointer v0.0.0-20190905194746-02993c407bfb // indirect
+	go.etcd.io/bbolt v1.3.5 // indirect
+	go.opencensus.io v0.22.2 // indirect
+	golang.org/x/net v0.0.0-20191209160850-c0dbc17a3553 // indirect
+	golang.org/x/sys v0.0.0-20200202164722-d101bd2416d5
+	google.golang.org/genproto v0.0.0-20191216205247-b31c10ee225f // indirect
+	google.golang.org/grpc v1.23.0 // indirect
+	k8s.io/apimachinery v0.18.9
+)

go.sum

@@ -0,0 +1,367 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/Microsoft/go-winio v0.4.14 h1:+hMXMk01us9KgxGb7ftKQt2Xpf5hH/yky+TDA+qxleU=
+github.com/Microsoft/go-winio v0.4.14/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA=
+github.com/Microsoft/hcsshim v0.8.7-0.20190820203702-9e921883ac92 h1:LbNLS5KKzW/L4K2scH5rzTA5MvRWiUfcWv4Qh/6D3wY=
+github.com/Microsoft/hcsshim v0.8.7-0.20190820203702-9e921883ac92/go.mod h1:nvUXb1s75kCTKHWZ1FGlut+PBI9D9EoQHCKcil2Cyps=
+github.com/NYTimes/gziphandler v0.0.0-20170623195520-56545f4a5d46/go.mod h1:3wb06e3pkSAbeQ52E9H9iFoQsEEwGN64994WTCIhntQ=
+github.com/PuerkitoBio/purell v1.0.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
+github.com/PuerkitoBio/urlesc v0.0.0-20160726150825-5bd2802263f2/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
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+github.com/containerd/typeurl v0.0.0-20180627222232-a93fcdb778cd/go.mod h1:Cm3kwCdlkCfMSHURc+r6fwoGH6/F1hH3S4sg0rLFWPc=
+github.com/containerd/typeurl v1.0.0 h1:7LMH7LfEmpWeCkGcIputvd4P0Rnd0LrIv1Jk2s5oobs=
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hack/build-containerd-armhf.sh

@@ -3,7 +3,7 @@
 export ARCH="armv6l"
 echo "Downloading Go"
 
-curl -SLsf https://dl.google.com/go/go1.12.14.linux-$ARCH.tar.gz --output /tmp/go.tgz
+curl -SLsf https://dl.google.com/go/go1.13.15.linux-$ARCH.tar.gz --output /tmp/go.tgz
 sudo rm -rf /usr/local/go/
 sudo mkdir -p /usr/local/go/
 sudo tar -xvf /tmp/go.tgz -C /usr/local/go/ --strip-components=1

hack/install.sh

@@ -0,0 +1,199 @@
+#!/bin/bash
+
+# Copyright OpenFaaS Author(s) 2020
+
+#########################
+# Repo specific content #
+#########################
+
+export OWNER="openfaas"
+export REPO="faasd"
+
+version=""
+
+echo "Finding latest version from GitHub"
+version=$(curl -sI https://github.com/$OWNER/$REPO/releases/latest | grep -i "location:" | awk -F"/" '{ printf "%s", $NF }' | tr -d '\r')
+echo "$version"
+
+if [ ! $version ]; then
+  echo "Failed while attempting to get latest version"
+  exit 1
+fi
+
+SUDO=sudo
+if [ "$(id -u)" -eq 0 ]; then
+  SUDO=
+fi
+
+verify_system() {
+  if ! [ -d /run/systemd ]; then
+    fatal 'Can not find systemd to use as a process supervisor for faasd'
+  fi
+}
+
+has_yum() {
+  [ -n "$(command -v yum)" ]
+}
+
+has_apt_get() {
+  [ -n "$(command -v apt-get)" ]
+}
+
+install_required_packages() {
+  if $(has_apt_get); then
+    $SUDO apt-get update -y
+    $SUDO apt-get install -y curl runc bridge-utils
+  elif $(has_yum); then
+    $SUDO yum check-update -y
+    $SUDO yum install -y curl runc
+  else
+    fatal "Could not find apt-get or yum. Cannot install dependencies on this OS."
+    exit 1
+  fi
+}
+
+install_cni_plugins() {
+  cni_version=v0.8.5
+  suffix=""
+  arch=$(uname -m)
+  case $arch in
+  x86_64 | amd64)
+    suffix=amd64
+    ;;
+  aarch64)
+    suffix=arm64
+    ;;
+  arm*)
+    suffix=arm
+    ;;
+  *)
+    fatal "Unsupported architecture $arch"
+    ;;
+  esac
+
+  $SUDO mkdir -p /opt/cni/bin
+  curl -sSL https://github.com/containernetworking/plugins/releases/download/${cni_version}/cni-plugins-linux-${suffix}-${cni_version}.tgz | $SUDO tar -xvz -C /opt/cni/bin
+}
+
+install_containerd() {
+  arch=$(uname -m)
+  case $arch in
+  x86_64 | amd64)
+    curl -sLSf https://github.com/containerd/containerd/releases/download/v1.3.7/containerd-1.3.7-linux-amd64.tar.gz | $SUDO tar -xvz --strip-components=1 -C /usr/local/bin/
+    ;;
+  armv7l)
+    curl -sSL https://github.com/alexellis/containerd-arm/releases/download/v1.3.5/containerd-1.3.5-linux-armhf.tar.gz | $SUDO tar -xvz --strip-components=1 -C /usr/local/bin/
+    ;;
+  aarch64)
+    curl -sSL https://github.com/alexellis/containerd-arm/releases/download/v1.3.5/containerd-1.3.5-linux-arm64.tar.gz | $SUDO tar -xvz --strip-components=1 -C /usr/local/bin/
+    ;;
+  *)
+    fatal "Unsupported architecture $arch"
+    ;;
+  esac
+
+  $SUDO systemctl unmask containerd || :
+  $SUDO curl -SLfs https://raw.githubusercontent.com/containerd/containerd/v1.3.5/containerd.service --output /etc/systemd/system/containerd.service
+  $SUDO systemctl enable containerd
+  $SUDO systemctl start containerd
+
+  sleep 5
+}
+
+install_faasd() {
+  arch=$(uname -m)
+  case $arch in
+  x86_64 | amd64)
+    suffix=""
+    ;;
+  aarch64)
+    suffix=-arm64
+    ;;
+  armv7l)
+    suffix=-armhf
+    ;;
+  *)
+    echo "Unsupported architecture $arch"
+    exit 1
+    ;;
+  esac
+
+  $SUDO curl -fSLs "https://github.com/openfaas/faasd/releases/download/${version}/faasd${suffix}" --output "/usr/local/bin/faasd"
+  $SUDO chmod a+x "/usr/local/bin/faasd"
+
+  mkdir -p /tmp/faasd-${version}-installation/hack
+  cd /tmp/faasd-${version}-installation
+  $SUDO curl -fSLs "https://raw.githubusercontent.com/openfaas/faasd/${version}/docker-compose.yaml" --output "docker-compose.yaml"
+  $SUDO curl -fSLs "https://raw.githubusercontent.com/openfaas/faasd/${version}/prometheus.yml" --output "prometheus.yml"
+  $SUDO curl -fSLs "https://raw.githubusercontent.com/openfaas/faasd/${version}/resolv.conf" --output "resolv.conf"
+  $SUDO curl -fSLs "https://raw.githubusercontent.com/openfaas/faasd/${version}/hack/faasd-provider.service" --output "hack/faasd-provider.service"
+  $SUDO curl -fSLs "https://raw.githubusercontent.com/openfaas/faasd/${version}/hack/faasd.service" --output "hack/faasd.service"
+  $SUDO /usr/local/bin/faasd install
+}
+
+install_caddy() {
+  if [ ! -z "${FAASD_DOMAIN}" ]; then
+    arch=$(uname -m)
+    case $arch in
+    x86_64 | amd64)
+      suffix="amd64"
+      ;;
+    aarch64)
+      suffix=-arm64
+      ;;
+    armv7l)
+      suffix=-armv7
+      ;;
+    *)
+      echo "Unsupported architecture $arch"
+      exit 1
+      ;;
+    esac
+
+    curl -sSL "https://github.com/caddyserver/caddy/releases/download/v2.2.1/caddy_2.2.1_linux_${suffix}.tar.gz" | $SUDO tar -xvz -C /usr/bin/ caddy
+    $SUDO curl -fSLs https://raw.githubusercontent.com/caddyserver/dist/master/init/caddy.service --output /etc/systemd/system/caddy.service
+
+    $SUDO mkdir -p /etc/caddy
+    $SUDO mkdir -p /var/lib/caddy
+    
+    if $(id caddy >/dev/null 2>&1); then
+      echo "User caddy already exists."
+    else
+      $SUDO useradd --system --home /var/lib/caddy --shell /bin/false caddy
+    fi
+
+    $SUDO tee /etc/caddy/Caddyfile >/dev/null <<EOF
+{
+  email "${LETSENCRYPT_EMAIL}"
+}
+
+${FAASD_DOMAIN} {
+  reverse_proxy 127.0.0.1:8080
+}
+EOF
+
+    $SUDO chown --recursive caddy:caddy /var/lib/caddy
+    $SUDO chown --recursive caddy:caddy /etc/caddy
+
+    $SUDO systemctl enable caddy
+    $SUDO systemctl start caddy
+  else
+    echo "Skipping caddy installation as FAASD_DOMAIN."
+  fi
+}
+
+install_faas_cli() {
+  curl -sLS https://cli.openfaas.com | $SUDO sh
+}
+
+verify_system
+install_required_packages
+
+$SUDO /sbin/sysctl -w net.ipv4.conf.all.forwarding=1
+echo "net.ipv4.conf.all.forwarding=1" | $SUDO tee -a /etc/sysctl.conf
+
+install_cni_plugins
+install_containerd
+install_faas_cli
+install_faasd
+install_caddy

pkg/cninetwork/cni_network.go

@@ -1,6 +1,7 @@
 package cninetwork
 
 import (
+	"bufio"
 	"context"
 	"fmt"
 	"io"
@@ -10,6 +11,7 @@ import (
 	"os"
 	"path"
 	"path/filepath"
+	"strings"
 
 	"github.com/containerd/containerd"
 	gocni "github.com/containerd/go-cni"
@@ -19,21 +21,31 @@ import (
 const (
 	// CNIBinDir describes the directory where the CNI binaries are stored
 	CNIBinDir = "/opt/cni/bin"
+
 	// CNIConfDir describes the directory where the CNI plugin's configuration is stored
 	CNIConfDir = "/etc/cni/net.d"
+
 	// NetNSPathFmt gives the path to the a process network namespace, given the pid
 	NetNSPathFmt = "/proc/%d/ns/net"
-	// CNIResultsDir is the directory CNI stores allocated IP for containers
-	CNIResultsDir = "/var/lib/cni/results"
+
+	// CNIDataDir is the directory CNI stores allocated IP for containers
+	CNIDataDir = "/var/run/cni"
+
 	// defaultCNIConfFilename is the vanity filename of default CNI configuration file
 	defaultCNIConfFilename = "10-openfaas.conflist"
+
 	// defaultNetworkName names the "docker-bridge"-like CNI plugin-chain installed when no other CNI configuration is present.
 	// This value appears in iptables comments created by CNI.
 	defaultNetworkName = "openfaas-cni-bridge"
+
 	// defaultBridgeName is the default bridge device name used in the defaultCNIConf
 	defaultBridgeName = "openfaas0"
+
 	// defaultSubnet is the default subnet used in the defaultCNIConf -- this value is set to not collide with common container networking subnets:
-	defaultSubnet = "10.62.0.0/16"
+	defaultSubnet = "10.63.0.0/16"
+
+	// defaultIfPrefix is the interface name to be created in the container
+	defaultIfPrefix = "eth"
 )
 
 // defaultCNIConf is a CNI configuration that enables network access to containers (docker-bridge style)
@@ -50,6 +62,7 @@ var defaultCNIConf = fmt.Sprintf(`
         "ipam": {
             "type": "host-local",
             "subnet": "%s",
+            "dataDir": "%s",
             "routes": [
                 { "dst": "0.0.0.0/0" }
             ]
@@ -60,7 +73,7 @@ var defaultCNIConf = fmt.Sprintf(`
       }
     ]
 }
-`, defaultNetworkName, defaultBridgeName, defaultSubnet)
+`, defaultNetworkName, defaultBridgeName, defaultSubnet, CNIDataDir)
 
 // InitNetwork writes configlist file and initializes CNI network
 func InitNetwork() (gocni.CNI, error) {
@@ -75,11 +88,14 @@ func InitNetwork() (gocni.CNI, error) {
 	netConfig := path.Join(CNIConfDir, defaultCNIConfFilename)
 	if err := ioutil.WriteFile(netConfig, []byte(defaultCNIConf), 644); err != nil {
 		return nil, fmt.Errorf("cannot write network config: %s", defaultCNIConfFilename)
-
 	}
+
 	// Initialize CNI library
-	cni, err := gocni.New(gocni.WithPluginConfDir(CNIConfDir),
-		gocni.WithPluginDir([]string{CNIBinDir}))
+	cni, err := gocni.New(
+		gocni.WithPluginConfDir(CNIConfDir),
+		gocni.WithPluginDir([]string{CNIBinDir}),
+		gocni.WithInterfacePrefix(defaultIfPrefix),
+	)
 
 	if err != nil {
 		return nil, fmt.Errorf("error initializing cni: %s", err)
@@ -131,43 +147,61 @@ func DeleteCNINetwork(ctx context.Context, cni gocni.CNI, client *containerd.Cli
 	return errors.Wrapf(containerErr, "Unable to find container: %s, error: %s", name, containerErr)
 }
 
-// GetIPAddress returns the IP address of the created container
-func GetIPAddress(result *gocni.CNIResult, task containerd.Task) (net.IP, error) {
-	// Get the IP of the created interface
-	var ip net.IP
-	for ifName, config := range result.Interfaces {
-		if config.Sandbox == netNamespace(task) {
-			for _, ipConfig := range config.IPConfigs {
-				if ifName != "lo" && ipConfig.IP.To4() != nil {
-					ip = ipConfig.IP
-				}
-			}
+// GetIPAddress returns the IP address from container based on container name and PID
+func GetIPAddress(container string, PID uint32) (string, error) {
+	CNIDir := path.Join(CNIDataDir, defaultNetworkName)
+
+	files, err := ioutil.ReadDir(CNIDir)
+	if err != nil {
+		return "", fmt.Errorf("failed to read CNI dir for container %s: %v", container, err)
+	}
+
+	for _, file := range files {
+		// each fileName is an IP address
+		fileName := file.Name()
+
+		resultsFile := filepath.Join(CNIDir, fileName)
+		found, err := isCNIResultForPID(resultsFile, container, PID)
+		if err != nil {
+			return "", err
+		}
+
+		if found {
+			return fileName, nil
 		}
 	}
-	if ip == nil {
-		return nil, fmt.Errorf("unable to get IP address for: %s", task.ID())
-	}
-	return ip, nil
+
+	return "", fmt.Errorf("unable to get IP address for container: %s", container)
 }
 
-func GetIPfromPID(pid int) (*net.IP, error) {
-	// https://github.com/weaveworks/weave/blob/master/net/netdev.go
+// isCNIResultForPID confirms if the CNI result file contains the
+// process name, PID and interface name
+//
+// Example:
+//
+// /var/run/cni/openfaas-cni-bridge/10.63.0.2
+//
+// nats-621
+// eth1
+func isCNIResultForPID(fileName, container string, PID uint32) (bool, error) {
+	found := false
 
-	peerIDs, err := ConnectedToBridgeVethPeerIds(defaultBridgeName)
+	f, err := os.Open(fileName)
 	if err != nil {
-		return nil, fmt.Errorf("unable to find peers on: %s %s", defaultBridgeName, err)
+		return false, fmt.Errorf("failed to open CNI IP file for %s: %v", fileName, err)
+	}
+	defer f.Close()
+
+	reader := bufio.NewReader(f)
+	processLine, _ := reader.ReadString('\n')
+	if strings.Contains(processLine, fmt.Sprintf("%s-%d", container, PID)) {
+		ethNameLine, _ := reader.ReadString('\n')
+		if strings.Contains(ethNameLine, defaultIfPrefix) {
+			found = true
+		}
 	}
 
-	addrs, addrsErr := GetNetDevsByVethPeerIds(pid, peerIDs)
-	if addrsErr != nil {
-		return nil, fmt.Errorf("unable to find address for veth pair using: %v %s", peerIDs, addrsErr)
-	}
-
-	if len(addrs) > 0 && len(addrs[0].CIDRs) > 0 {
-		return &addrs[0].CIDRs[0].IP, nil
-	}
-
-	return nil, fmt.Errorf("no IP found for function")
+	return found, nil
 }
 
 // CNIGateway returns the gateway for default subnet

pkg/cninetwork/cni_network_test.go

@@ -0,0 +1,63 @@
+package cninetwork
+
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func Test_isCNIResultForPID_Found(t *testing.T) {
+	body := `nats-621
+eth1`
+	fileName := `10.63.0.2`
+	container := "nats"
+	PID := uint32(621)
+	fullPath := filepath.Join(os.TempDir(), fileName)
+
+	err := ioutil.WriteFile(fullPath, []byte(body), 0700)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	defer func() {
+		os.Remove(fullPath)
+	}()
+
+	got, err := isCNIResultForPID(fullPath, container, PID)
+
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+
+	want := true
+	if got != want {
+		t.Fatalf("want %v, but got %v", want, got)
+	}
+}
+
+func Test_isCNIResultForPID_NoMatch(t *testing.T) {
+	body := `nats-621
+eth1`
+	fileName := `10.63.0.3`
+	container := "gateway"
+	PID := uint32(621)
+	fullPath := filepath.Join(os.TempDir(), fileName)
+
+	err := ioutil.WriteFile(fullPath, []byte(body), 0700)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	defer func() {
+		os.Remove(fullPath)
+	}()
+
+	got, err := isCNIResultForPID(fullPath, container, PID)
+
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	want := false
+	if got != want {
+		t.Fatalf("want %v, but got %v", want, got)
+	}
+}

pkg/cninetwork/weave.go

@@ -1,131 +0,0 @@
-// Copyright Weaveworks
-// github.com/weaveworks/weave/net
-
-package cninetwork
-
-import (
-	"fmt"
-	"net"
-	"os"
-
-	"github.com/vishvananda/netlink"
-	"github.com/vishvananda/netns"
-)
-
-type Dev struct {
-	Name  string           `json:"Name,omitempty"`
-	MAC   net.HardwareAddr `json:"MAC,omitempty"`
-	CIDRs []*net.IPNet     `json:"CIDRs,omitempty"`
-}
-
-func linkToNetDev(link netlink.Link) (Dev, error) {
-	addrs, err := netlink.AddrList(link, netlink.FAMILY_V4)
-	if err != nil {
-		return Dev{}, err
-	}
-
-	netDev := Dev{Name: link.Attrs().Name, MAC: link.Attrs().HardwareAddr}
-	for _, addr := range addrs {
-		netDev.CIDRs = append(netDev.CIDRs, addr.IPNet)
-	}
-	return netDev, nil
-}
-
-// ConnectedToBridgeVethPeerIds returns peer indexes of veth links connected to
-// the given bridge. The peer index is used to query from a container netns
-// whether the container is connected to the bridge.
-func ConnectedToBridgeVethPeerIds(bridgeName string) ([]int, error) {
-	var ids []int
-
-	br, err := netlink.LinkByName(bridgeName)
-	if err != nil {
-		return nil, err
-	}
-	links, err := netlink.LinkList()
-	if err != nil {
-		return nil, err
-	}
-
-	for _, link := range links {
-		if _, isveth := link.(*netlink.Veth); isveth && link.Attrs().MasterIndex == br.Attrs().Index {
-			peerID := link.Attrs().ParentIndex
-			if peerID == 0 {
-				// perhaps running on an older kernel where ParentIndex doesn't work.
-				// as fall-back, assume the peers are consecutive
-				peerID = link.Attrs().Index - 1
-			}
-			ids = append(ids, peerID)
-		}
-	}
-
-	return ids, nil
-}
-
-// Lookup the weave interface of a container
-func GetWeaveNetDevs(processID int) ([]Dev, error) {
-	peerIDs, err := ConnectedToBridgeVethPeerIds("weave")
-	if err != nil {
-		return nil, err
-	}
-
-	return GetNetDevsByVethPeerIds(processID, peerIDs)
-}
-
-func GetNetDevsByVethPeerIds(processID int, peerIDs []int) ([]Dev, error) {
-	// Bail out if this container is running in the root namespace
-	netnsRoot, err := netns.GetFromPid(1)
-	if err != nil {
-		return nil, fmt.Errorf("unable to open root namespace: %s", err)
-	}
-	defer netnsRoot.Close()
-	netnsContainer, err := netns.GetFromPid(processID)
-	if err != nil {
-		// Unable to find a namespace for this process - just return nothing
-		if os.IsNotExist(err) {
-			return nil, nil
-		}
-		return nil, fmt.Errorf("unable to open process %d namespace: %s", processID, err)
-	}
-	defer netnsContainer.Close()
-	if netnsRoot.Equal(netnsContainer) {
-		return nil, nil
-	}
-
-	// convert list of peerIDs into a map for faster lookup
-	indexes := make(map[int]struct{})
-	for _, id := range peerIDs {
-		indexes[id] = struct{}{}
-	}
-
-	var netdevs []Dev
-	err = WithNetNS(netnsContainer, func() error {
-		links, err := netlink.LinkList()
-		if err != nil {
-			return err
-		}
-
-		for _, link := range links {
-			if _, found := indexes[link.Attrs().Index]; found {
-				netdev, err := linkToNetDev(link)
-				if err != nil {
-					return err
-				}
-				netdevs = append(netdevs, netdev)
-			}
-		}
-		return nil
-	})
-
-	return netdevs, err
-}
-
-// Get the weave bridge interface.
-// NB: Should be called from the root network namespace.
-func GetBridgeNetDev(bridgeName string) (Dev, error) {
-	link, err := netlink.LinkByName(bridgeName)
-	if err != nil {
-		return Dev{}, err
-	}
-
-	return linkToNetDev(link)
-}

pkg/constants.go

@@ -0,0 +1,13 @@
+package pkg
+
+const (
+	// FunctionNamespace is the default containerd namespace functions are created
+	FunctionNamespace = "openfaas-fn"
+
+	// faasdNamespace is the containerd namespace services are created
+	faasdNamespace = "openfaas"
+
+	faasServicesPullAlways = false
+
+	defaultSnapshotter = "overlayfs"
+)

pkg/contants.go

@@ -1,6 +0,0 @@
-package pkg
-
-const (
-	// FunctionNamespace is the default containerd namespace functions are created
-	FunctionNamespace = "openfaas-fn"
-)

pkg/depgraph/depgraph.go

@@ -0,0 +1,106 @@
+package depgraph
+
+import "log"
+
+// Node represents a node in a Graph with
+// 0 to many edges
+type Node struct {
+	Name  string
+	Edges []*Node
+}
+
+// Graph is a collection of nodes
+type Graph struct {
+	nodes []*Node
+}
+
+func NewDepgraph() *Graph {
+	return &Graph{
+		nodes: []*Node{},
+	}
+}
+
+// Nodes returns the nodes within the graph
+func (g *Graph) Nodes() []*Node {
+	return g.nodes
+}
+
+// Contains returns true if the target Node is found
+// in its list
+func (g *Graph) Contains(target *Node) bool {
+	for _, g := range g.nodes {
+		if g.Name == target.Name {
+			return true
+		}
+	}
+
+	return false
+}
+
+// Add places a Node into the current Graph
+func (g *Graph) Add(target *Node) {
+	g.nodes = append(g.nodes, target)
+}
+
+// Remove deletes a target Node reference from the
+// list of nodes in the graph
+func (g *Graph) Remove(target *Node) {
+	var found *int
+	for i, n := range g.nodes {
+		if n == target {
+			found = &i
+			break
+		}
+	}
+
+	if found != nil {
+		g.nodes = append(g.nodes[:*found], g.nodes[*found+1:]...)
+	}
+}
+
+// Resolve retruns a list of node names in order of their dependencies.
+// A use case may be for determining the correct order to install
+// software packages, or to start services.
+// Based upon the algorithm described by Ferry Boender in the following article
+// https://www.electricmonk.nl/log/2008/08/07/dependency-resolving-algorithm/
+func (g *Graph) Resolve() []string {
+	resolved := &Graph{}
+	unresolved := &Graph{}
+	for _, node := range g.nodes {
+		resolve(node, resolved, unresolved)
+	}
+
+	order := []string{}
+
+	for _, node := range resolved.Nodes() {
+		order = append(order, node.Name)
+	}
+
+	return order
+}
+
+// resolve mutates the resolved graph for a given starting
+// node. The unresolved graph is used to detect a circular graph
+// error and will throw a panic. This can be caught with a resolve
+// in a go routine.
+func resolve(node *Node, resolved, unresolved *Graph) {
+	unresolved.Add(node)
+
+	for _, edge := range node.Edges {
+
+		if !resolved.Contains(edge) && unresolved.Contains(edge) {
+			log.Panicf("edge: %s may be a circular dependency", edge.Name)
+		}
+
+		resolve(edge, resolved, unresolved)
+	}
+
+	for _, r := range resolved.nodes {
+		if r.Name == node.Name {
+			return
+		}
+	}
+
+	resolved.Add(node)
+	unresolved.Remove(node)
+}

pkg/depgraph/depgraph_test.go

@@ -0,0 +1,41 @@
+package depgraph
+
+import "testing"
+
+func Test_RemoveMedial(t *testing.T) {
+	g := Graph{nodes: []*Node{}}
+	a := &Node{Name: "A"}
+	b := &Node{Name: "B"}
+	c := &Node{Name: "C"}
+
+	g.nodes = append(g.nodes, a)
+	g.nodes = append(g.nodes, b)
+	g.nodes = append(g.nodes, c)
+
+	g.Remove(b)
+
+	for _, n := range g.nodes {
+		if n.Name == b.Name {
+			t.Fatalf("Found deleted node: %s", n.Name)
+		}
+	}
+}
+
+func Test_RemoveFinal(t *testing.T) {
+	g := Graph{nodes: []*Node{}}
+	a := &Node{Name: "A"}
+	b := &Node{Name: "B"}
+	c := &Node{Name: "C"}
+
+	g.nodes = append(g.nodes, a)
+	g.nodes = append(g.nodes, b)
+	g.nodes = append(g.nodes, c)
+
+	g.Remove(c)
+
+	for _, n := range g.nodes {
+		if n.Name == c.Name {
+			t.Fatalf("Found deleted node: %s", c.Name)
+		}
+	}
+}

pkg/deployment_order.go

@@ -0,0 +1,41 @@
+package pkg
+
+import (
+	"log"
+
+	"github.com/openfaas/faasd/pkg/depgraph"
+)
+
+func buildDeploymentOrder(svcs []Service) []string {
+
+	graph := buildServiceGraph(svcs)
+
+	order := graph.Resolve()
+
+	log.Printf("Start-up order:\n")
+	for _, node := range order {
+		log.Printf("- %s\n", node)
+	}
+
+	return order
+}
+
+func buildServiceGraph(svcs []Service) *depgraph.Graph {
+	graph := depgraph.NewDepgraph()
+
+	nodeMap := map[string]*depgraph.Node{}
+	for _, s := range svcs {
+		n := &depgraph.Node{Name: s.Name}
+		nodeMap[s.Name] = n
+		graph.Add(n)
+
+	}
+
+	for _, s := range svcs {
+		for _, d := range s.DependsOn {
+			nodeMap[s.Name].Edges = append(nodeMap[s.Name].Edges, nodeMap[d])
+		}
+	}
+
+	return graph
+}

pkg/deployment_order_test.go

@@ -0,0 +1,224 @@
+package pkg
+
+import (
+	"log"
+	"testing"
+)
+
+func Test_buildDeploymentOrder_ARequiresB(t *testing.T) {
+	svcs := []Service{
+		{
+			Name:      "A",
+			DependsOn: []string{"B"},
+		},
+		{
+			Name:      "B",
+			DependsOn: []string{},
+		},
+	}
+
+	order := buildDeploymentOrder(svcs)
+
+	if len(order) < len(svcs) {
+		t.Fatalf("length of order too short: %d", len(order))
+	}
+
+	got := order[0]
+	want := "B"
+	if got != want {
+		t.Fatalf("%s should be last to be installed, but was: %s", want, got)
+	}
+}
+
+func Test_buildDeploymentOrder_ARequiresBAndC(t *testing.T) {
+	svcs := []Service{
+		{
+			Name:      "A",
+			DependsOn: []string{"B", "C"},
+		},
+		{
+			Name:      "B",
+			DependsOn: []string{},
+		},
+		{
+			Name:      "C",
+			DependsOn: []string{},
+		},
+	}
+
+	order := buildDeploymentOrder(svcs)
+
+	if len(order) < len(svcs) {
+		t.Fatalf("length of order too short: %d", len(order))
+	}
+
+	a := indexStr(order, "a")
+	b := indexStr(order, "b")
+	c := indexStr(order, "c")
+
+	if a > b {
+		t.Fatalf("a should be after dependencies")
+	}
+	if a > c {
+		t.Fatalf("a should be after dependencies")
+	}
+
+}
+
+func Test_buildDeploymentOrder_ARequiresBRequiresC(t *testing.T) {
+	svcs := []Service{
+		{
+			Name:      "A",
+			DependsOn: []string{"B"},
+		},
+		{
+			Name:      "B",
+			DependsOn: []string{"C"},
+		},
+		{
+			Name:      "C",
+			DependsOn: []string{},
+		},
+	}
+
+	order := buildDeploymentOrder(svcs)
+
+	if len(order) < len(svcs) {
+		t.Fatalf("length of order too short: %d", len(order))
+	}
+
+	got := order[0]
+	want := "C"
+	if got != want {
+		t.Fatalf("%s should be last to be installed, but was: %s", want, got)
+	}
+	got = order[1]
+	want = "B"
+	if got != want {
+		t.Fatalf("%s should be last to be installed, but was: %s", want, got)
+	}
+	got = order[2]
+	want = "A"
+	if got != want {
+		t.Fatalf("%s should be last to be installed, but was: %s", want, got)
+	}
+}
+
+func Test_buildDeploymentOrderCircularARequiresBRequiresA(t *testing.T) {
+	svcs := []Service{
+		{
+			Name:      "A",
+			DependsOn: []string{"B"},
+		},
+		{
+			Name:      "B",
+			DependsOn: []string{"A"},
+		},
+	}
+
+	defer func() { recover() }()
+
+	buildDeploymentOrder(svcs)
+
+	t.Fatalf("did not panic as expected")
+}
+
+func Test_buildDeploymentOrderComposeFile(t *testing.T) {
+	// svcs := []Service{}
+	file, err := LoadComposeFileWithArch("../", "docker-compose.yaml", func() (string, string) {
+		return "x86_64", "Linux"
+	})
+
+	if err != nil {
+		t.Fatalf("unable to load compose file: %s", err)
+	}
+
+	svcs, err := ParseCompose(file)
+	if err != nil {
+		t.Fatalf("unable to parse compose file: %s", err)
+	}
+
+	for _, s := range svcs {
+		log.Printf("Service: %s\n", s.Name)
+		for _, d := range s.DependsOn {
+			log.Printf("Link: %s => %s\n", s.Name, d)
+		}
+	}
+
+	order := buildDeploymentOrder(svcs)
+
+	if len(order) < len(svcs) {
+		t.Fatalf("length of order too short: %d", len(order))
+	}
+
+	queueWorker := indexStr(order, "queue-worker")
+	nats := indexStr(order, "nats")
+	gateway := indexStr(order, "gateway")
+	prometheus := indexStr(order, "prometheus")
+
+	if prometheus > gateway {
+		t.Fatalf("Prometheus order was after gateway, and should be before")
+	}
+	if nats > gateway {
+		t.Fatalf("NATS order was after gateway, and should be before")
+	}
+	if nats > queueWorker {
+		t.Fatalf("NATS order was after queue-worker, and should be before")
+	}
+}
+
+func Test_buildDeploymentOrderOpenFaaS(t *testing.T) {
+	svcs := []Service{
+		{
+			Name:      "queue-worker",
+			DependsOn: []string{"nats"},
+		},
+		{
+			Name:      "prometheus",
+			DependsOn: []string{},
+		},
+		{
+			Name:      "gateway",
+			DependsOn: []string{"prometheus", "nats", "basic-auth-plugin"},
+		},
+		{
+			Name:      "basic-auth-plugin",
+			DependsOn: []string{},
+		},
+		{
+			Name:      "nats",
+			DependsOn: []string{},
+		},
+	}
+
+	order := buildDeploymentOrder(svcs)
+
+	if len(order) < len(svcs) {
+		t.Fatalf("length of order too short: %d", len(order))
+	}
+
+	queueWorker := indexStr(order, "queue-worker")
+	nats := indexStr(order, "nats")
+	gateway := indexStr(order, "gateway")
+	prometheus := indexStr(order, "prometheus")
+
+	if prometheus > gateway {
+		t.Fatalf("Prometheus order was after gateway, and should be before")
+	}
+	if nats > gateway {
+		t.Fatalf("NATS order was after gateway, and should be before")
+	}
+	if nats > queueWorker {
+		t.Fatalf("NATS order was after queue-worker, and should be before")
+	}
+}
+
+func indexStr(st []string, t string) int {
+	for n, s := range st {
+		if s == t {
+			return n
+		}
+
+	}
+	return -1
+}

pkg/local_resolver.go

@@ -0,0 +1,104 @@
+package pkg
+
+import (
+	"io/ioutil"
+	"log"
+	"os"
+	"strings"
+	"sync"
+	"time"
+)
+
+// LocalResolver provides hostname to IP look-up for faasd core services
+type LocalResolver struct {
+	Path  string
+	Map   map[string]string
+	Mutex *sync.RWMutex
+}
+
+// NewLocalResolver creates a new resolver for reading from a hosts file
+func NewLocalResolver(path string) Resolver {
+	return &LocalResolver{
+		Path:  path,
+		Mutex: &sync.RWMutex{},
+		Map:   make(map[string]string),
+	}
+}
+
+// Start polling the disk for the hosts file in Path
+func (l *LocalResolver) Start() {
+	var lastStat os.FileInfo
+
+	for {
+		rebuild := false
+		if info, err := os.Stat(l.Path); err == nil {
+			if lastStat == nil {
+				rebuild = true
+			} else {
+				if !lastStat.ModTime().Equal(info.ModTime()) {
+					rebuild = true
+				}
+			}
+			lastStat = info
+		}
+
+		if rebuild {
+			log.Printf("Resolver rebuilding map")
+			l.rebuild()
+		}
+		time.Sleep(time.Second * 3)
+	}
+}
+
+func (l *LocalResolver) rebuild() {
+	l.Mutex.Lock()
+	defer l.Mutex.Unlock()
+
+	fileData, fileErr := ioutil.ReadFile(l.Path)
+	if fileErr != nil {
+		log.Printf("resolver rebuild error: %s", fileErr.Error())
+		return
+	}
+
+	lines := strings.Split(string(fileData), "\n")
+
+	for _, line := range lines {
+		index := strings.Index(line, "\t")
+
+		if len(line) > 0 && index > -1 {
+			ip := line[:index]
+			host := line[index+1:]
+			log.Printf("Resolver: %q=%q", host, ip)
+			l.Map[host] = ip
+		}
+	}
+}
+
+// Get resolves a hostname to an IP, or timesout after the duration has passed
+func (l *LocalResolver) Get(upstream string, got chan<- string, timeout time.Duration) {
+	start := time.Now()
+	for {
+		if val := l.get(upstream); len(val) > 0 {
+			got <- val
+			break
+		}
+
+		if time.Now().After(start.Add(timeout)) {
+			log.Printf("Timed out after %s getting host %q", timeout.String(), upstream)
+			break
+		}
+
+		time.Sleep(time.Millisecond * 250)
+	}
+}
+
+func (l *LocalResolver) get(upstream string) string {
+	l.Mutex.RLock()
+	defer l.Mutex.RUnlock()
+
+	if val, ok := l.Map[upstream]; ok {
+		return val
+	}
+
+	return ""
+}

pkg/logs/requestor.go

@@ -49,7 +49,7 @@ func (r *requester) Query(ctx context.Context, req logs.Request) (<-chan logs.Me
 	// call start and get the stdout prior to streaming so that we can return a meaningful
 	// error for as long as possible. If the cmd starts correctly, we are highly likely to
 	// succeed anyway
-	msgs := make(chan logs.Message, 100)
+	msgs := make(chan logs.Message)
 	go streamLogs(ctx, cmd, stdout, msgs)
 	go logErrOut(stderr)
 
@@ -62,7 +62,6 @@ func (r *requester) Query(ctx context.Context, req logs.Request) (<-chan logs.Me
 // 		--output=json \
 // 		--since=<timestamp> \
 // 		<--follow> \
-// 		--output-fields=SYSLOG_IDENTIFIER,MESSAGE,_PID,_SOURCE_REALTIME_TIMESTAMP
 func buildCmd(ctx context.Context, req logs.Request) *exec.Cmd {
 	// // set the cursor position based on req, default to 5m
 	since := time.Now().Add(-5 * time.Minute)
@@ -102,10 +101,6 @@ func buildCmd(ctx context.Context, req logs.Request) *exec.Cmd {
 // the loop is based on the Decoder example in the docs
 // https://golang.org/pkg/encoding/json/#Decoder.Decode
 func streamLogs(ctx context.Context, cmd *exec.Cmd, out io.ReadCloser, msgs chan logs.Message) {
-	// without this sleep the channel seems to get stuck. This results in either no log messages
-	// being read by the Handler _or_ the messages are read but only flushed when the request
-	// timesout
-	time.Sleep(time.Millisecond)
 	log.Println("starting journal stream using ", cmd.String())
 
 	// will ensure `out` is closed and all related resources cleaned up

pkg/logs/requestor_test.go

@@ -29,19 +29,19 @@ func Test_parseEntry(t *testing.T) {
 	}
 
 	if entry.Name != expectedEntry.Name {
-		t.Fatalf("expected Name %s, got %s", expectedEntry.Name, entry.Name)
+		t.Fatalf("want Name: %q, got %q", expectedEntry.Name, entry.Name)
 	}
 
 	if entry.Namespace != expectedEntry.Namespace {
-		t.Fatalf("expected Namespace %s, got %s", expectedEntry.Namespace, entry.Namespace)
+		t.Fatalf("want Namespace: %q, got %q", expectedEntry.Namespace, entry.Namespace)
 	}
 
 	if entry.Timestamp != expectedEntry.Timestamp {
-		t.Fatalf("expected Timestamp %s, got %s", expectedEntry.Timestamp, entry.Timestamp)
+		t.Fatalf("want Timestamp: %q, got %q", expectedEntry.Timestamp, entry.Timestamp)
 	}
 
 	if entry.Text != expectedEntry.Text {
-		t.Fatalf("expected Text %s, got %s", expectedEntry.Text, entry.Text)
+		t.Fatalf("want Text: %q, got %q", expectedEntry.Text, entry.Text)
 	}
 }
 
@@ -57,17 +57,17 @@ func Test_buildCmd(t *testing.T) {
 	}
 
 	expectedArgs := fmt.Sprintf(
-		"--utc --no-pager --output=json --output-fields=SYSLOG_IDENTIFIER,MESSAGE,_PID,_SOURCE_REALTIME_TIMESTAMP --identifier=spacetwo:loggyfunc --since=%s --follow --lines=5",
+		"--utc --no-pager --output=json --identifier=spacetwo:loggyfunc --since=%s --follow --lines=5",
 		now.UTC().Format("2006-01-02 15:04:05"),
 	)
 
 	cmd := buildCmd(ctx, req).String()
-
-	if !strings.Contains(cmd, "journalctl") {
-		t.Fatalf("expected journalctl cmd, got cmd %s", cmd)
+	wantCmd := "journalctl"
+	if !strings.Contains(cmd, wantCmd) {
+		t.Fatalf("cmd want: %q, got: %q", wantCmd, cmd)
 	}
 
 	if !strings.HasSuffix(cmd, expectedArgs) {
-		t.Fatalf("expected arg %s,\ngot cmd %s", expectedArgs, cmd)
+		t.Fatalf("arg want: %q\ngot: %q", expectedArgs, cmd)
 	}
 }

pkg/provider/handlers/deploy.go

@@ -9,9 +9,11 @@ import (
 	"net/http"
 	"os"
 	"path"
+	"time"
 
 	"github.com/containerd/containerd"
 	"github.com/containerd/containerd/cio"
+	"github.com/containerd/containerd/containers"
 	"github.com/containerd/containerd/namespaces"
 	"github.com/containerd/containerd/oci"
 	gocni "github.com/containerd/go-cni"
@@ -22,10 +24,13 @@ import (
 	cninetwork "github.com/openfaas/faasd/pkg/cninetwork"
 	"github.com/openfaas/faasd/pkg/service"
 	"github.com/pkg/errors"
+	"k8s.io/apimachinery/pkg/api/resource"
 )
 
-func MakeDeployHandler(client *containerd.Client, cni gocni.CNI, secretMountPath string, alwaysPull bool) func(w http.ResponseWriter, r *http.Request) {
+const annotationLabelPrefix = "com.openfaas.annotations."
 
+// MakeDeployHandler returns a handler to deploy a function
+func MakeDeployHandler(client *containerd.Client, cni gocni.CNI, secretMountPath string, alwaysPull bool) func(w http.ResponseWriter, r *http.Request) {
 	return func(w http.ResponseWriter, r *http.Request) {
 
 		if r.Body == nil {
@@ -64,11 +69,16 @@ func MakeDeployHandler(client *containerd.Client, cni gocni.CNI, secretMountPath
 	}
 }
 
-func deploy(ctx context.Context, req types.FunctionDeployment, client *containerd.Client, cni gocni.CNI, secretMountPath string, alwaysPull bool) error {
+// prepull is an optimization which means an image can be pulled before a deployment
+// request, since a deployment request first deletes the active function before
+// trying to deploy a new one.
+func prepull(ctx context.Context, req types.FunctionDeployment, client *containerd.Client, alwaysPull bool) (containerd.Image, error) {
+	start := time.Now()
 	r, err := reference.ParseNormalizedNamed(req.Image)
 	if err != nil {
-		return err
+		return nil, err
 	}
+
 	imgRef := reference.TagNameOnly(r).String()
 
 	snapshotter := ""
@@ -78,11 +88,26 @@ func deploy(ctx context.Context, req types.FunctionDeployment, client *container
 
 	image, err := service.PrepareImage(ctx, client, imgRef, snapshotter, alwaysPull)
 	if err != nil {
-		return errors.Wrapf(err, "unable to pull image %s", imgRef)
+		return nil, errors.Wrapf(err, "unable to pull image %s", imgRef)
 	}
 
 	size, _ := image.Size(ctx)
-	log.Printf("Deploy %s size: %d\n", image.Name(), size)
+	log.Printf("Image for: %s size: %d, took: %fs\n", image.Name(), size, time.Since(start).Seconds())
+
+	return image, nil
+}
+
+func deploy(ctx context.Context, req types.FunctionDeployment, client *containerd.Client, cni gocni.CNI, secretMountPath string, alwaysPull bool) error {
+
+	snapshotter := ""
+	if val, ok := os.LookupEnv("snapshotter"); ok {
+		snapshotter = val
+	}
+
+	image, err := prepull(ctx, req, client, alwaysPull)
+	if err != nil {
+		return err
+	}
 
 	envs := prepareEnv(req.EnvProcess, req.EnvVars)
 	mounts := getMounts()
@@ -98,17 +123,43 @@ func deploy(ctx context.Context, req types.FunctionDeployment, client *container
 
 	name := req.Service
 
-	container, err := client.NewContainer(
-		ctx,
-		name,
-		containerd.WithImage(image),
+	labels, err := buildLabels(&req)
+	if err != nil {
+		return fmt.Errorf("Unable to apply labels to conatiner: %s, error: %s", name, err)
+	}
+
+	var memory *specs.LinuxMemory
+	if req.Limits != nil && len(req.Limits.Memory) > 0 {
+		memory = &specs.LinuxMemory{}
+
+		qty, err := resource.ParseQuantity(req.Limits.Memory)
+		if err != nil {
+			log.Printf("error parsing (%q) as quantity: %s", req.Limits.Memory, err.Error())
+		}
+		v := qty.Value()
+		memory.Limit = &v
+	}
+
+	ctrOps := []containerd.NewContainerOpts{containerd.WithImage(image),
 		containerd.WithSnapshotter(snapshotter),
 		containerd.WithNewSnapshot(name+"-snapshot", image),
 		containerd.WithNewSpec(oci.WithImageConfig(image),
+			oci.WithHostname(name),
 			oci.WithCapabilities([]string{"CAP_NET_RAW"}),
 			oci.WithMounts(mounts),
-			oci.WithEnv(envs)),
-		containerd.WithContainerLabels(*req.Labels),
+			oci.WithEnv(envs),
+			oci.WithLinuxDevice("/dev/kvm", "rmw"),
+			withMemory(memory)),
+		containerd.WithContainerLabels(labels)}
+
+	if v, ok := os.LookupEnv("FUNCTION_RUNTIME"); ok && len(v) > 0 {
+		ctrOps = append(ctrOps, containerd.WithRuntime(v, nil))
+	}
+
+	container, err := client.NewContainer(
+		ctx,
+		name,
+		ctrOps...,
 	)
 
 	if err != nil {
@@ -119,10 +170,33 @@ func deploy(ctx context.Context, req types.FunctionDeployment, client *container
 
 }
 
+func buildLabels(request *types.FunctionDeployment) (map[string]string, error) {
+	// Adapted from faas-swarm/handlers/deploy.go:buildLabels
+	labels := map[string]string{}
+
+	if request.Labels != nil {
+		for k, v := range *request.Labels {
+			labels[k] = v
+		}
+	}
+
+	if request.Annotations != nil {
+		for k, v := range *request.Annotations {
+			key := fmt.Sprintf("%s%s", annotationLabelPrefix, k)
+			if _, ok := labels[key]; !ok {
+				labels[key] = v
+			} else {
+				return nil, errors.New(fmt.Sprintf("Key %s cannot be used as a label due to a conflict with annotation prefix %s", k, annotationLabelPrefix))
+			}
+		}
+	}
+
+	return labels, nil
+}
+
 func createTask(ctx context.Context, client *containerd.Client, container containerd.Container, cni gocni.CNI) error {
 
 	name := container.ID()
-	// task, taskErr := container.NewTask(ctx, cio.NewCreator(cio.WithStdio))
 
 	task, taskErr := container.NewTask(ctx, cio.BinaryIO("/usr/local/bin/faasd", nil))
 
@@ -133,17 +207,18 @@ func createTask(ctx context.Context, client *containerd.Client, container contai
 	log.Printf("Container ID: %s\tTask ID %s:\tTask PID: %d\t\n", name, task.ID(), task.Pid())
 
 	labels := map[string]string{}
-	network, err := cninetwork.CreateCNINetwork(ctx, cni, task, labels)
+	_, err := cninetwork.CreateCNINetwork(ctx, cni, task, labels)
 
 	if err != nil {
 		return err
 	}
 
-	ip, err := cninetwork.GetIPAddress(network, task)
+	ip, err := cninetwork.GetIPAddress(name, task.Pid())
 	if err != nil {
 		return err
 	}
-	log.Printf("%s has IP: %s.\n", name, ip.String())
+
+	log.Printf("%s has IP: %s.\n", name, ip)
 
 	_, waitErr := task.Wait(ctx)
 	if waitErr != nil {
@@ -205,3 +280,21 @@ func validateSecrets(secretMountPath string, secrets []string) error {
 	}
 	return nil
 }
+
+func withMemory(mem *specs.LinuxMemory) oci.SpecOpts {
+	return func(ctx context.Context, _ oci.Client, c *containers.Container, s *oci.Spec) error {
+		if mem != nil {
+			if s.Linux == nil {
+				s.Linux = &specs.Linux{}
+			}
+			if s.Linux.Resources == nil {
+				s.Linux.Resources = &specs.LinuxResources{}
+			}
+			if s.Linux.Resources.Memory == nil {
+				s.Linux.Resources.Memory = &specs.LinuxMemory{}
+			}
+			s.Linux.Resources.Memory.Limit = mem.Limit
+		}
+		return nil
+	}
+}

pkg/provider/handlers/deploy_test.go

@@ -0,0 +1,77 @@
+package handlers
+
+import (
+	"fmt"
+	"reflect"
+	"testing"
+
+	"github.com/openfaas/faas-provider/types"
+)
+
+func Test_BuildLabels_WithAnnotations(t *testing.T) {
+	// Test each combination of nil/non-nil annotation + label
+	tables := []struct {
+		name       string
+		label      map[string]string
+		annotation map[string]string
+		result     map[string]string
+	}{
+		{"Empty label and annotations returns empty table map", nil, nil, map[string]string{}},
+		{
+			"Label with empty annotation returns valid map",
+			map[string]string{"L1": "V1"},
+			nil,
+			map[string]string{"L1": "V1"}},
+		{
+			"Annotation with empty label returns valid map",
+			nil,
+			map[string]string{"A1": "V2"},
+			map[string]string{fmt.Sprintf("%sA1", annotationLabelPrefix): "V2"}},
+		{
+			"Label and annotation provided returns valid combined map",
+			map[string]string{"L1": "V1"},
+			map[string]string{"A1": "V2"},
+			map[string]string{
+				"L1": "V1",
+				fmt.Sprintf("%sA1", annotationLabelPrefix): "V2",
+			},
+		},
+	}
+
+	for _, tc := range tables {
+
+		t.Run(tc.name, func(t *testing.T) {
+			request := &types.FunctionDeployment{
+				Labels:      &tc.label,
+				Annotations: &tc.annotation,
+			}
+
+			val, err := buildLabels(request)
+
+			if err != nil {
+				t.Fatalf("want: no error got: %v", err)
+			}
+
+			if !reflect.DeepEqual(val, tc.result) {
+				t.Errorf("Got: %s, expected %s", val, tc.result)
+			}
+		})
+	}
+}
+
+func Test_BuildLabels_WithAnnotationCollision(t *testing.T) {
+	request := &types.FunctionDeployment{
+		Labels: &map[string]string{
+			"function_name": "echo",
+			fmt.Sprintf("%scurrent-time", annotationLabelPrefix): "Wed 25 Jul 06:41:43 BST 2018",
+		},
+		Annotations: &map[string]string{"current-time": "Wed 25 Jul 06:41:43 BST 2018"},
+	}
+
+	val, err := buildLabels(request)
+
+	if err == nil {
+		t.Errorf("Expected an error, got %d values", len(val))
+	}
+
+}

pkg/provider/handlers/functions.go

@@ -4,6 +4,10 @@ import (
 	"context"
 	"fmt"
 	"log"
+	"strings"
+	"time"
+
+	"github.com/opencontainers/runtime-spec/specs-go"
 
 	"github.com/containerd/containerd"
 	"github.com/containerd/containerd/namespaces"
@@ -13,79 +17,167 @@ import (
 )
 
 type Function struct {
-	name      string
-	namespace string
-	image     string
-	pid       uint32
-	replicas  int
-	IP        string
-	labels    map[string]string
+	name        string
+	namespace   string
+	image       string
+	pid         uint32
+	replicas    int
+	IP          string
+	labels      map[string]string
+	annotations map[string]string
+	secrets     []string
+	envVars     map[string]string
+	envProcess  string
+	createdAt   time.Time
 }
 
 // ListFunctions returns a map of all functions with running tasks on namespace
-func ListFunctions(client *containerd.Client) (map[string]Function, error) {
+func ListFunctions(client *containerd.Client) (map[string]*Function, error) {
 	ctx := namespaces.WithNamespace(context.Background(), faasd.FunctionNamespace)
-	functions := make(map[string]Function)
+	functions := make(map[string]*Function)
 
-	containers, _ := client.Containers(ctx)
-	for _, k := range containers {
-		name := k.ID()
+	containers, err := client.Containers(ctx)
+	if err != nil {
+		return functions, err
+	}
+
+	for _, c := range containers {
+		name := c.ID()
 		f, err := GetFunction(client, name)
 		if err != nil {
-			continue
+			log.Printf("error getting function %s: ", name)
+			return functions, err
 		}
-		functions[name] = f
+		functions[name] = &f
 	}
+
 	return functions, nil
 }
 
 // GetFunction returns a function that matches name
 func GetFunction(client *containerd.Client, name string) (Function, error) {
 	ctx := namespaces.WithNamespace(context.Background(), faasd.FunctionNamespace)
+	fn := Function{}
+
 	c, err := client.LoadContainer(ctx, name)
+	if err != nil {
+		return Function{}, fmt.Errorf("unable to find function: %s, error %s", name, err)
+	}
 
+	image, err := c.Image(ctx)
+	if err != nil {
+		return fn, err
+	}
+
+	containerName := c.ID()
+	allLabels, labelErr := c.Labels(ctx)
+
+	if labelErr != nil {
+		log.Printf("cannot list container %s labels: %s", containerName, labelErr.Error())
+	}
+
+	labels, annotations := buildLabelsAndAnnotations(allLabels)
+
+	spec, err := c.Spec(ctx)
+	if err != nil {
+		return Function{}, fmt.Errorf("unable to load function spec for reading secrets: %s, error %s", name, err)
+	}
+
+	info, err := c.Info(ctx)
+	if err != nil {
+		return Function{}, fmt.Errorf("can't load info for: %s, error %s", name, err)
+	}
+
+	envVars, envProcess := readEnvFromProcessEnv(spec.Process.Env)
+	secrets := readSecretsFromMounts(spec.Mounts)
+
+	fn.name = containerName
+	fn.namespace = faasd.FunctionNamespace
+	fn.image = image.Name()
+	fn.labels = labels
+	fn.annotations = annotations
+	fn.secrets = secrets
+	fn.envVars = envVars
+	fn.envProcess = envProcess
+	fn.createdAt = info.CreatedAt
+
+	replicas := 0
+	task, err := c.Task(ctx, nil)
 	if err == nil {
-		image, _ := c.Image(ctx)
-
-		containerName := c.ID()
-		labels, labelErr := c.Labels(ctx)
-		if labelErr != nil {
-			log.Printf("cannot list container %s labels: %s", containerName, labelErr.Error())
+		// Task for container exists
+		svc, err := task.Status(ctx)
+		if err != nil {
+			return Function{}, fmt.Errorf("unable to get task status for container: %s %s", name, err)
 		}
 
-		f := Function{
-			name:      containerName,
-			namespace: faasd.FunctionNamespace,
-			image:     image.Name(),
-			labels:    labels,
-		}
+		if svc.Status == "running" {
+			replicas = 1
+			fn.pid = task.Pid()
 
-		replicas := 0
-		task, err := c.Task(ctx, nil)
-		if err == nil {
-			// Task for container exists
-			svc, err := task.Status(ctx)
+			// Get container IP address
+			ip, err := cninetwork.GetIPAddress(name, task.Pid())
 			if err != nil {
-				return Function{}, fmt.Errorf("unable to get task status for container: %s %s", name, err)
+				return Function{}, err
 			}
-			if svc.Status == "running" {
-				replicas = 1
-				f.pid = task.Pid()
+			fn.IP = ip
+		}
+	} else {
+		replicas = 0
+	}
 
-				// Get container IP address
-				ip, err := cninetwork.GetIPfromPID(int(task.Pid()))
-				if err != nil {
-					return Function{}, err
-				}
-				f.IP = ip.String()
-			}
-		} else {
-			replicas = 0
+	fn.replicas = replicas
+	return fn, nil
+}
+
+func readEnvFromProcessEnv(env []string) (map[string]string, string) {
+	foundEnv := make(map[string]string)
+	fprocess := ""
+	for _, e := range env {
+		kv := strings.Split(e, "=")
+		if len(kv) == 1 {
+			continue
 		}
 
-		f.replicas = replicas
-		return f, nil
+		if kv[0] == "PATH" {
+			continue
+		}
+
+		if kv[0] == "fprocess" {
+			fprocess = kv[1]
+			continue
+		}
+
+		foundEnv[kv[0]] = kv[1]
+	}
+
+	return foundEnv, fprocess
+}
+
+func readSecretsFromMounts(mounts []specs.Mount) []string {
+	secrets := []string{}
+	for _, mnt := range mounts {
+		x := strings.Split(mnt.Destination, "/var/openfaas/secrets/")
+		if len(x) > 1 {
+			secrets = append(secrets, x[1])
+		}
 
 	}
-	return Function{}, fmt.Errorf("unable to find function: %s, error %s", name, err)
+	return secrets
+}
+
+// buildLabelsAndAnnotations returns a separated list with labels first,
+// followed by annotations by checking each key of ctrLabels for a prefix.
+func buildLabelsAndAnnotations(ctrLabels map[string]string) (map[string]string, map[string]string) {
+	labels := make(map[string]string)
+	annotations := make(map[string]string)
+
+	for k, v := range ctrLabels {
+		if strings.HasPrefix(k, annotationLabelPrefix) {
+			annotations[strings.TrimPrefix(k, annotationLabelPrefix)] = v
+		} else {
+			labels[k] = v
+		}
+	}
+
+	return labels, annotations
 }

pkg/provider/handlers/functions_test.go

@@ -0,0 +1,86 @@
+package handlers
+
+import (
+	"fmt"
+	"github.com/opencontainers/runtime-spec/specs-go"
+	"reflect"
+	"testing"
+)
+
+func Test_BuildLabelsAndAnnotationsFromServiceSpec_Annotations(t *testing.T) {
+	container := map[string]string{
+		"qwer": "ty",
+		"dvor": "ak",
+		fmt.Sprintf("%scurrent-time", annotationLabelPrefix): "5 Nov 20:10:20 PST 1955",
+		fmt.Sprintf("%sfuture-time", annotationLabelPrefix):  "21 Oct 20:10:20 PST 2015",
+	}
+
+	labels, annotation := buildLabelsAndAnnotations(container)
+
+	if len(labels) != 2 {
+		t.Errorf("want: %d labels got: %d", 2, len(labels))
+	}
+
+	if len(annotation) != 2 {
+		t.Errorf("want: %d annotation got: %d", 1, len(annotation))
+	}
+
+	if _, ok := annotation["current-time"]; !ok {
+		t.Errorf("want: '%s' entry in annotation map got: key not found", "current-time")
+	}
+}
+
+func Test_SplitMountToSecrets(t *testing.T) {
+	type test struct {
+		Name     string
+		Input    []specs.Mount
+		Expected []string
+	}
+	tests := []test{
+		{Name: "No matching openfaas secrets", Input: []specs.Mount{{Destination: "/foo/"}}, Expected: []string{}},
+		{Name: "Nil mounts", Input: nil, Expected: []string{}},
+		{Name: "No Mounts", Input: []specs.Mount{{Destination: "/foo/"}}, Expected: []string{}},
+		{Name: "One Mounts IS secret", Input: []specs.Mount{{Destination: "/var/openfaas/secrets/secret1"}}, Expected: []string{"secret1"}},
+		{Name: "Multiple Mounts 1 secret", Input: []specs.Mount{{Destination: "/var/openfaas/secrets/secret1"}, {Destination: "/some/other/path"}}, Expected: []string{"secret1"}},
+		{Name: "Multiple Mounts all secrets", Input: []specs.Mount{{Destination: "/var/openfaas/secrets/secret1"}, {Destination: "/var/openfaas/secrets/secret2"}}, Expected: []string{"secret1", "secret2"}},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.Name, func(t *testing.T) {
+			got := readSecretsFromMounts(tc.Input)
+			if !reflect.DeepEqual(got, tc.Expected) {
+				t.Fatalf("expected %s, got %s", tc.Expected, got)
+			}
+		})
+	}
+}
+
+func Test_ProcessEnvToEnvVars(t *testing.T) {
+	type test struct {
+		Name     string
+		Input    []string
+		Expected map[string]string
+		fprocess string
+	}
+	tests := []test{
+		{Name: "No matching EnvVars", Input: []string{"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin", "fprocess=python index.py"}, Expected: make(map[string]string), fprocess: "python index.py"},
+		{Name: "No EnvVars", Input: []string{}, Expected: make(map[string]string), fprocess: ""},
+		{Name: "One EnvVar", Input: []string{"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin", "fprocess=python index.py", "env=this"}, Expected: map[string]string{"env": "this"}, fprocess: "python index.py"},
+		{Name: "Multiple EnvVars", Input: []string{"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin", "this=that", "env=var", "fprocess=python index.py"}, Expected: map[string]string{"this": "that", "env": "var"}, fprocess: "python index.py"},
+		{Name: "Nil EnvVars", Input: nil, Expected: make(map[string]string)},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.Name, func(t *testing.T) {
+			got, fprocess := readEnvFromProcessEnv(tc.Input)
+			if !reflect.DeepEqual(got, tc.Expected) {
+				t.Fatalf("expected: %s, got: %s", tc.Expected, got)
+			}
+
+			if fprocess != tc.fprocess {
+				t.Fatalf("expected fprocess: %s, got: %s", tc.fprocess, got)
+
+			}
+		})
+	}
+}

pkg/provider/handlers/info.go

@@ -22,10 +22,10 @@ func MakeInfoHandler(version, sha string) http.HandlerFunc {
 			defer r.Body.Close()
 		}
 
-		infoResponse := types.InfoResponse{
+		infoResponse := types.ProviderInfo{
 			Orchestration: OrchestrationIdentifier,
-			Provider:      ProviderName,
-			Version: types.ProviderVersion{
+			Name:          ProviderName,
+			Version: &types.VersionInfo{
 				Release: version,
 				SHA:     sha,
 			},

pkg/provider/handlers/info_test.go

@@ -15,14 +15,14 @@ func Test_InfoHandler(t *testing.T) {
 	r := httptest.NewRequest("GET", "/", nil)
 	handler(w, r)
 
-	resp := types.InfoResponse{}
+	resp := types.ProviderInfo{}
 	err := json.Unmarshal(w.Body.Bytes(), &resp)
 	if err != nil {
 		t.Fatalf("unexpected error unmarshalling the response")
 	}
 
-	if resp.Provider != ProviderName {
-		t.Fatalf("expected provider %q, got %q", ProviderName, resp.Provider)
+	if resp.Name != ProviderName {
+		t.Fatalf("expected provider %q, got %q", ProviderName, resp.Name)
 	}
 
 	if resp.Orchestration != OrchestrationIdentifier {

pkg/provider/handlers/read.go

@@ -14,19 +14,27 @@ func MakeReadHandler(client *containerd.Client) func(w http.ResponseWriter, r *h
 	return func(w http.ResponseWriter, r *http.Request) {
 
 		res := []types.FunctionStatus{}
-		funcs, err := ListFunctions(client)
+		fns, err := ListFunctions(client)
 		if err != nil {
 			log.Printf("[Read] error listing functions. Error: %s\n", err)
 			http.Error(w, err.Error(), http.StatusBadRequest)
 			return
 		}
-		for _, function := range funcs {
+
+		for _, fn := range fns {
+			annotations := &fn.annotations
+			labels := &fn.labels
 			res = append(res, types.FunctionStatus{
-				Name:      function.name,
-				Image:     function.image,
-				Replicas:  uint64(function.replicas),
-				Namespace: function.namespace,
-				Labels:    &function.labels,
+				Name:        fn.name,
+				Image:       fn.image,
+				Replicas:    uint64(fn.replicas),
+				Namespace:   fn.namespace,
+				Labels:      labels,
+				Annotations: annotations,
+				Secrets:     fn.secrets,
+				EnvVars:     fn.envVars,
+				EnvProcess:  fn.envProcess,
+				CreatedAt:   fn.createdAt,
 			})
 		}
 
@@ -34,6 +42,5 @@ func MakeReadHandler(client *containerd.Client) func(w http.ResponseWriter, r *h
 		w.Header().Set("Content-Type", "application/json")
 		w.WriteHeader(http.StatusOK)
 		w.Write(body)
-
 	}
 }

pkg/provider/handlers/replicas.go

@@ -22,6 +22,11 @@ func MakeReplicaReaderHandler(client *containerd.Client) func(w http.ResponseWri
 				Replicas:          uint64(f.replicas),
 				Namespace:         f.namespace,
 				Labels:            &f.labels,
+				Annotations:       &f.annotations,
+				Secrets:           f.secrets,
+				EnvVars:           f.envVars,
+				EnvProcess:        f.envProcess,
+				CreatedAt:         f.createdAt,
 			}
 
 			functionBytes, _ := json.Marshal(found)

pkg/provider/handlers/scale.go

@@ -11,6 +11,7 @@ import (
 	"github.com/containerd/containerd"
 	"github.com/containerd/containerd/namespaces"
 	gocni "github.com/containerd/go-cni"
+
 	"github.com/openfaas/faas-provider/types"
 	faasd "github.com/openfaas/faasd/pkg"
 )
@@ -58,46 +59,71 @@ func MakeReplicaUpdateHandler(client *containerd.Client, cni gocni.CNI) func(w h
 			return
 		}
 
-		taskExists := true
+		var taskExists bool
+		var taskStatus *containerd.Status
+
 		task, taskErr := ctr.Task(ctx, nil)
 		if taskErr != nil {
 			msg := fmt.Sprintf("cannot load task for service %s, error: %s", name, taskErr)
 			log.Printf("[Scale] %s\n", msg)
 			taskExists = false
+		} else {
+			taskExists = true
+			status, statusErr := task.Status(ctx)
+			if statusErr != nil {
+				msg := fmt.Sprintf("cannot load task status for %s, error: %s", name, statusErr)
+				log.Printf("[Scale] %s\n", msg)
+				http.Error(w, msg, http.StatusInternalServerError)
+				return
+			} else {
+				taskStatus = &status
+			}
 		}
 
-		if req.Replicas > 0 {
-			if taskExists {
-				if status, statusErr := task.Status(ctx); statusErr == nil {
-					if status.Status == containerd.Paused {
-						if resumeErr := task.Resume(ctx); resumeErr != nil {
-							log.Printf("[Scale] error resuming task %s, error: %s\n", name, resumeErr)
-							http.Error(w, resumeErr.Error(), http.StatusBadRequest)
-						}
-					}
-				}
-			} else {
-				deployErr := createTask(ctx, client, ctr, cni)
-				if deployErr != nil {
-					log.Printf("[Scale] error deploying %s, error: %s\n", name, deployErr)
-					http.Error(w, deployErr.Error(), http.StatusBadRequest)
+		createNewTask := false
+
+		// Scale to zero
+		if req.Replicas == 0 {
+			// If a task is running, pause it
+			if taskExists && taskStatus.Status == containerd.Running {
+				if pauseErr := task.Pause(ctx); pauseErr != nil {
+					wrappedPauseErr := fmt.Errorf("error pausing task %s, error: %s", name, pauseErr)
+					log.Printf("[Scale] %s\n", wrappedPauseErr.Error())
+					http.Error(w, wrappedPauseErr.Error(), http.StatusNotFound)
 					return
 				}
-				return
-			}
-		} else {
-			if taskExists {
-				if status, statusErr := task.Status(ctx); statusErr == nil {
-					if status.Status == containerd.Running {
-						if pauseErr := task.Pause(ctx); pauseErr != nil {
-							log.Printf("[Scale] error pausing task %s, error: %s\n", name, pauseErr)
-							http.Error(w, pauseErr.Error(), http.StatusBadRequest)
-						}
-					}
-				}
 			}
 		}
 
-	}
+		if taskExists {
+			if taskStatus != nil {
+				if taskStatus.Status == containerd.Paused {
+					if resumeErr := task.Resume(ctx); resumeErr != nil {
+						log.Printf("[Scale] error resuming task %s, error: %s\n", name, resumeErr)
+						http.Error(w, resumeErr.Error(), http.StatusBadRequest)
+						return
+					}
+				} else if taskStatus.Status == containerd.Stopped {
+					// Stopped tasks cannot be restarted, must be removed, and created again
+					if _, delErr := task.Delete(ctx); delErr != nil {
+						log.Printf("[Scale] error deleting stopped task %s, error: %s\n", name, delErr)
+						http.Error(w, delErr.Error(), http.StatusBadRequest)
+						return
+					}
+					createNewTask = true
+				}
+			}
+		} else {
+			createNewTask = true
+		}
 
+		if createNewTask {
+			deployErr := createTask(ctx, client, ctr, cni)
+			if deployErr != nil {
+				log.Printf("[Scale] error deploying %s, error: %s\n", name, deployErr)
+				http.Error(w, deployErr.Error(), http.StatusBadRequest)
+				return
+			}
+		}
+	}
 }

pkg/provider/handlers/secret.go

@@ -2,11 +2,13 @@ package handlers
 
 import (
 	"encoding/json"
+	"fmt"
 	"io/ioutil"
 	"log"
 	"net/http"
 	"os"
 	"path"
+	"strings"
 
 	"github.com/containerd/containerd"
 	"github.com/openfaas/faas-provider/types"
@@ -76,17 +78,6 @@ func createSecret(c *containerd.Client, w http.ResponseWriter, r *http.Request,
 	}
 }
 
-func parseSecret(r *http.Request) (types.Secret, error) {
-	secret := types.Secret{}
-	bytesOut, err := ioutil.ReadAll(r.Body)
-	if err != nil {
-		return secret, err
-	}
-
-	err = json.Unmarshal(bytesOut, &secret)
-	return secret, err
-}
-
 func deleteSecret(c *containerd.Client, w http.ResponseWriter, r *http.Request, mountPath string) {
 	secret, err := parseSecret(r)
 	if err != nil {
@@ -103,3 +94,29 @@ func deleteSecret(c *containerd.Client, w http.ResponseWriter, r *http.Request,
 		return
 	}
 }
+
+func parseSecret(r *http.Request) (types.Secret, error) {
+	secret := types.Secret{}
+	bytesOut, err := ioutil.ReadAll(r.Body)
+	if err != nil {
+		return secret, err
+	}
+
+	err = json.Unmarshal(bytesOut, &secret)
+	if err != nil {
+		return secret, err
+	}
+
+	if isTraversal(secret.Name) {
+		return secret, fmt.Errorf(traverseErrorSt)
+	}
+
+	return secret, err
+}
+
+const traverseErrorSt = "directory traversal found in name"
+
+func isTraversal(name string) bool {
+	return strings.Contains(name, fmt.Sprintf("%s", string(os.PathSeparator))) ||
+		strings.Contains(name, "..")
+}

pkg/provider/handlers/secret_test.go

@@ -0,0 +1,63 @@
+package handlers
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/openfaas/faas-provider/types"
+)
+
+func Test_parseSecretValidName(t *testing.T) {
+
+	s := types.Secret{Name: "authorized_keys"}
+	body, _ := json.Marshal(s)
+	reader := bytes.NewReader(body)
+	r := httptest.NewRequest(http.MethodPost, "/", reader)
+	_, err := parseSecret(r)
+
+	if err != nil {
+		t.Fatalf("secret name is valid with no traversal characters")
+	}
+}
+
+func Test_parseSecretValidNameWithDot(t *testing.T) {
+
+	s := types.Secret{Name: "authorized.keys"}
+	body, _ := json.Marshal(s)
+	reader := bytes.NewReader(body)
+	r := httptest.NewRequest(http.MethodPost, "/", reader)
+	_, err := parseSecret(r)
+
+	if err != nil {
+		t.Fatalf("secret name is valid with no traversal characters")
+	}
+}
+
+func Test_parseSecretWithTraversalWithSlash(t *testing.T) {
+
+	s := types.Secret{Name: "/root/.ssh/authorized_keys"}
+	body, _ := json.Marshal(s)
+	reader := bytes.NewReader(body)
+	r := httptest.NewRequest(http.MethodPost, "/", reader)
+	_, err := parseSecret(r)
+
+	if err == nil {
+		t.Fatalf("secret name should fail due to path traversal")
+	}
+}
+
+func Test_parseSecretWithTraversalWithDoubleDot(t *testing.T) {
+
+	s := types.Secret{Name: ".."}
+	body, _ := json.Marshal(s)
+	reader := bytes.NewReader(body)
+	r := httptest.NewRequest(http.MethodPost, "/", reader)
+	_, err := parseSecret(r)
+
+	if err == nil {
+		t.Fatalf("secret name should fail due to path traversal")
+	}
+}

pkg/provider/handlers/update.go

@@ -56,6 +56,12 @@ func MakeUpdateHandler(client *containerd.Client, cni gocni.CNI, secretMountPath
 		}
 
 		ctx := namespaces.WithNamespace(context.Background(), faasd.FunctionNamespace)
+
+		if _, err := prepull(ctx, req, client, alwaysPull); err != nil {
+			log.Printf("[Update] error with pre-pull: %s, %s\n", name, err)
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+		}
+
 		if function.replicas != 0 {
 			err = cninetwork.DeleteCNINetwork(ctx, cni, client, name)
 			if err != nil {
@@ -63,19 +69,19 @@ func MakeUpdateHandler(client *containerd.Client, cni gocni.CNI, secretMountPath
 			}
 		}
 
-		containerErr := service.Remove(ctx, client, name)
-		if containerErr != nil {
-			log.Printf("[Update] error removing %s, %s\n", name, containerErr)
-			http.Error(w, containerErr.Error(), http.StatusInternalServerError)
+		if err := service.Remove(ctx, client, name); err != nil {
+			log.Printf("[Update] error removing %s, %s\n", name, err)
+			http.Error(w, err.Error(), http.StatusInternalServerError)
 			return
 		}
 
-		deployErr := deploy(ctx, req, client, cni, secretMountPath, alwaysPull)
-		if deployErr != nil {
-			log.Printf("[Update] error deploying %s, error: %s\n", name, deployErr)
-			http.Error(w, deployErr.Error(), http.StatusBadRequest)
+		// The pull has already been done in prepull, so we can force this pull to "false"
+		pull := false
+
+		if err := deploy(ctx, req, client, cni, secretMountPath, pull); err != nil {
+			log.Printf("[Update] error deploying %s, error: %s\n", name, err)
+			http.Error(w, err.Error(), http.StatusBadRequest)
 			return
 		}
 	}
-
 }

pkg/proxy.go

@@ -1,122 +1,116 @@
 package pkg
 
 import (
-	"context"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"log"
+	"net"
 	"net/http"
+	"strconv"
+	"strings"
 
 	"time"
 )
 
-func NewProxy(port int, timeout time.Duration) *Proxy {
+// NewProxy creates a HTTP proxy to expose a host
+func NewProxy(upstream string, listenPort uint32, hostIP string, timeout time.Duration, resolver Resolver) *Proxy {
 
 	return &Proxy{
-		Port:    port,
-		Timeout: timeout,
+		Upstream: upstream,
+		Port:     listenPort,
+		HostIP:   hostIP,
+		Timeout:  timeout,
+		Resolver: resolver,
 	}
 }
 
+// Proxy for exposing a private container
 type Proxy struct {
 	Timeout time.Duration
-	Port    int
+
+	// Port on which to listen to traffic
+	Port uint32
+
+	// Upstream is where to send traffic when received
+	Upstream string
+
+	// The IP to use to bind locally
+	HostIP string
+
+	Resolver Resolver
 }
 
-func (p *Proxy) Start(gatewayChan chan string, done chan bool) error {
-	tcp := p.Port
+// Start listening and forwarding HTTP to the host
+func (p *Proxy) Start() error {
 
 	http.DefaultClient.CheckRedirect = func(req *http.Request, via []*http.Request) error {
 		return http.ErrUseLastResponse
 	}
-	ps := proxyState{
-		Host: "",
+	upstreamHost, upstreamPort, err := getUpstream(p.Upstream, p.Port)
+	if err != nil {
+		return err
 	}
 
-	ps.Host = <-gatewayChan
+	log.Printf("Looking up IP for: %q", upstreamHost)
+	got := make(chan string, 1)
 
-	log.Printf("Starting faasd proxy on %d\n", tcp)
+	go p.Resolver.Get(upstreamHost, got, time.Second*5)
 
-	fmt.Printf("Gateway: %s\n", ps.Host)
+	ipAddress := <-got
+	close(got)
 
-	s := &http.Server{
-		Addr:           fmt.Sprintf(":%d", tcp),
-		ReadTimeout:    p.Timeout,
-		WriteTimeout:   p.Timeout,
-		MaxHeaderBytes: 1 << 20, // Max header of 1MB
-		Handler:        http.HandlerFunc(makeProxy(&ps)),
+	upstreamAddr := fmt.Sprintf("%s:%d", ipAddress, upstreamPort)
+
+	localBind := fmt.Sprintf("%s:%d", p.HostIP, p.Port)
+	log.Printf("Proxy from: %s, to: %s (%s)\n", localBind, p.Upstream, ipAddress)
+
+	l, err := net.Listen("tcp", localBind)
+	if err != nil {
+		log.Printf("Error: %s", err.Error())
+		return err
 	}
 
-	go func() {
-		log.Printf("[proxy] Begin listen on %d\n", p.Port)
-		if err := s.ListenAndServe(); err != http.ErrServerClosed {
-			log.Printf("Error ListenAndServe: %v", err)
+	defer l.Close()
+	for {
+		// Wait for a connection.
+		conn, err := l.Accept()
+		if err != nil {
+			acceptErr := fmt.Errorf("Unable to accept on %d, error: %s",
+				p.Port,
+				err.Error())
+			log.Printf("%s", acceptErr.Error())
+			return acceptErr
 		}
-	}()
 
-	log.Println("[proxy] Wait for done")
-	<-done
-	log.Println("[proxy] Done received")
-	if err := s.Shutdown(context.Background()); err != nil {
-		log.Printf("[proxy] Error in Shutdown: %v", err)
-	}
+		upstream, err := net.Dial("tcp", upstreamAddr)
 
-	return nil
-}
+		if err != nil {
+			log.Printf("unable to dial to %s, error: %s", upstreamAddr, err.Error())
+			return err
+		}
 
-// copyHeaders clones the header values from the source into the destination.
-func copyHeaders(destination http.Header, source *http.Header) {
-	for k, v := range *source {
-		vClone := make([]string, len(v))
-		copy(vClone, v)
-		destination[k] = vClone
+		go pipe(conn, upstream)
+		go pipe(upstream, conn)
 	}
 }
 
-type proxyState struct {
-	Host string
+func pipe(from net.Conn, to net.Conn) {
+	defer from.Close()
+	io.Copy(from, to)
 }
 
-func makeProxy(ps *proxyState) func(w http.ResponseWriter, r *http.Request) {
-	return func(w http.ResponseWriter, r *http.Request) {
+func getUpstream(val string, defaultPort uint32) (string, uint32, error) {
+	upstreamHostname := val
+	upstreamPort := defaultPort
 
-		query := ""
-		if len(r.URL.RawQuery) > 0 {
-			query = "?" + r.URL.RawQuery
+	if in := strings.Index(val, ":"); in > -1 {
+		upstreamHostname = val[:in]
+		port, err := strconv.ParseInt(val[in+1:], 10, 32)
+		if err != nil {
+			return "", defaultPort, err
 		}
-
-		upstream := fmt.Sprintf("http://%s%s%s", ps.Host, r.URL.Path, query)
-		fmt.Printf("[faasd] proxy: %s\n", upstream)
-
-		if r.Body != nil {
-			defer r.Body.Close()
-		}
-
-		wrapper := ioutil.NopCloser(r.Body)
-		upReq, upErr := http.NewRequest(r.Method, upstream, wrapper)
-
-		copyHeaders(upReq.Header, &r.Header)
-
-		if upErr != nil {
-			log.Println(upErr)
-
-			http.Error(w, upErr.Error(), http.StatusInternalServerError)
-			return
-		}
-
-		upRes, upResErr := http.DefaultClient.Do(upReq)
-
-		if upResErr != nil {
-			log.Println(upResErr)
-
-			http.Error(w, upResErr.Error(), http.StatusInternalServerError)
-			return
-		}
-
-		copyHeaders(w.Header(), &upRes.Header)
-
-		w.WriteHeader(upRes.StatusCode)
-		io.Copy(w, upRes.Body)
+		upstreamPort = uint32(port)
 	}
+
+	return upstreamHostname, upstreamPort, nil
 }

pkg/proxy_test.go

@@ -16,7 +16,7 @@ func Test_Proxy_ToPrivateServer(t *testing.T) {
 
 	wantBodyText := "OK"
 	wantBody := []byte(wantBodyText)
-	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+	upstreamSvr := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 
 		if r.Body != nil {
 			defer r.Body.Close()
@@ -27,17 +27,19 @@ func Test_Proxy_ToPrivateServer(t *testing.T) {
 
 	}))
 
-	defer upstream.Close()
+	defer upstreamSvr.Close()
 	port := 8080
-	proxy := NewProxy(port, time.Second*1)
+	u, _ := url.Parse(upstreamSvr.URL)
+	log.Println("Host", u.Host)
+
+	upstreamAddr := u.Host
+	proxy := NewProxy(upstreamAddr, 8080, "127.0.0.1", time.Second*1, &mockResolver{})
 
 	gwChan := make(chan string, 1)
 	doneCh := make(chan bool)
 
-	go proxy.Start(gwChan, doneCh)
+	go proxy.Start()
 
-	u, _ := url.Parse(upstream.URL)
-	log.Println("Host", u.Host)
 	wg := sync.WaitGroup{}
 	wg.Add(1)
 	go func() {
@@ -71,3 +73,14 @@ func Test_Proxy_ToPrivateServer(t *testing.T) {
 		doneCh <- true
 	}()
 }
+
+type mockResolver struct {
+}
+
+func (m *mockResolver) Start() {
+
+}
+
+func (m *mockResolver) Get(upstream string, got chan<- string, timeout time.Duration) {
+	got <- upstream
+}

pkg/resolver.go

@@ -0,0 +1,12 @@
+package pkg
+
+import "time"
+
+// Resolver resolves an upstream IP address for a given upstream host
+type Resolver interface {
+	// Start any polling or connections required to resolve
+	Start()
+
+	// Get an IP address using an asynchronous operation
+	Get(upstream string, got chan<- string, timeout time.Duration)
+}

pkg/service/service.go

@@ -27,31 +27,34 @@ func Remove(ctx context.Context, client *containerd.Client, name string) error {
 	container, containerErr := client.LoadContainer(ctx, name)
 
 	if containerErr == nil {
-		found := true
+		taskFound := true
 		t, err := container.Task(ctx, nil)
 		if err != nil {
 			if errdefs.IsNotFound(err) {
-				found = false
+				taskFound = false
 			} else {
 				return fmt.Errorf("unable to get task %s: ", err)
 			}
 		}
 
-		if found {
-			status, _ := t.Status(ctx)
-			fmt.Printf("Status of %s is: %s\n", name, status.Status)
-
-			log.Printf("Need to kill %s\n", name)
-			err := killTask(ctx, t)
+		if taskFound {
+			status, err := t.Status(ctx)
 			if err != nil {
+				log.Printf("Unable to get status for: %s, error: %s", name, err.Error())
+			} else {
+				log.Printf("Status of %s is: %s\n", name, status.Status)
+			}
+
+			log.Printf("Need to kill task: %s\n", name)
+			if err = killTask(ctx, t); err != nil {
 				return fmt.Errorf("error killing task %s, %s, %s", container.ID(), name, err)
 			}
 		}
 
-		err = container.Delete(ctx, containerd.WithSnapshotCleanup)
-		if err != nil {
+		if err := container.Delete(ctx, containerd.WithSnapshotCleanup); err != nil {
 			return fmt.Errorf("error deleting container %s, %s, %s", container.ID(), name, err)
 		}
+
 	} else {
 		service := client.SnapshotService("")
 		key := name + "snapshot"
@@ -70,6 +73,7 @@ func killTask(ctx context.Context, task containerd.Task) error {
 	wg := &sync.WaitGroup{}
 	wg.Add(1)
 	var err error
+
 	go func() {
 		defer wg.Done()
 		if task != nil {
@@ -114,6 +118,7 @@ func getResolver(ctx context.Context, configFile *configfile.ConfigFile) (remote
 		}
 		return ac.Username, ac.Password, nil
 	}
+
 	authOpts := []docker.AuthorizerOpt{docker.WithAuthCreds(credFunc)}
 	authorizer := docker.NewDockerAuthorizer(authOpts...)
 	opts := docker.ResolverOptions{
@@ -128,7 +133,7 @@ func PrepareImage(ctx context.Context, client *containerd.Client, imageName, sna
 		resolver remotes.Resolver
 	)
 
-	if _, stErr := os.Stat(filepath.Join(dockerConfigDir, config.ConfigFileName)); stErr == nil {
+	if _, statErr := os.Stat(filepath.Join(dockerConfigDir, config.ConfigFileName)); statErr == nil {
 		configFile, err := config.Load(dockerConfigDir)
 		if err != nil {
 			return nil, err
@@ -137,8 +142,8 @@ func PrepareImage(ctx context.Context, client *containerd.Client, imageName, sna
 		if err != nil {
 			return empty, err
 		}
-	} else if !os.IsNotExist(stErr) {
-		return empty, stErr
+	} else if !os.IsNotExist(statErr) {
+		return empty, statErr
 	}
 
 	var image containerd.Image
@@ -150,7 +155,6 @@ func PrepareImage(ctx context.Context, client *containerd.Client, imageName, sna
 
 		image = img
 	} else {
-
 		img, err := client.GetImage(ctx, imageName)
 		if err != nil {
 			if !errdefs.IsNotFound(err) {
@@ -187,9 +191,11 @@ func pullImage(ctx context.Context, client *containerd.Client, resolver remotes.
 	rOpts := []containerd.RemoteOpt{
 		containerd.WithPullUnpack,
 	}
+
 	if resolver != nil {
 		rOpts = append(rOpts, containerd.WithResolver(resolver))
 	}
+
 	img, err := client.Pull(ctx, imageName, rOpts...)
 	if err != nil {
 		return empty, fmt.Errorf("cannot pull: %s", err)

pkg/supervisor.go

@@ -7,7 +7,11 @@ import (
 	"log"
 	"os"
 	"path"
+	"sort"
 
+	"github.com/alexellis/k3sup/pkg/env"
+	"github.com/compose-spec/compose-go/loader"
+	compose "github.com/compose-spec/compose-go/types"
 	"github.com/containerd/containerd"
 	"github.com/containerd/containerd/cio"
 	"github.com/containerd/containerd/containers"
@@ -15,26 +19,36 @@ import (
 	gocni "github.com/containerd/go-cni"
 	"github.com/openfaas/faasd/pkg/cninetwork"
 	"github.com/openfaas/faasd/pkg/service"
+	"github.com/pkg/errors"
 
 	"github.com/containerd/containerd/namespaces"
 	"github.com/opencontainers/runtime-spec/specs-go"
 )
 
 const (
-	defaultSnapshotter         = "overlayfs"
 	workingDirectoryPermission = 0644
-	// faasdNamespace is the containerd namespace services are created
-	faasdNamespace         = "default"
-	faasServicesPullAlways = false
 )
 
 type Service struct {
-	Image  string
-	Env    []string
-	Name   string
-	Mounts []Mount
-	Caps   []string
-	Args   []string
+	// Image is the container image registry reference, in an OCI format.
+	Image     string
+	Env       []string
+	Name      string
+	Mounts    []Mount
+	Caps      []string
+	Args      []string
+	DependsOn []string
+	Ports     []ServicePort
+
+	// User in the docker-compose.yaml spec can set as follows:
+	// a user-id, username, userid:groupid or user:group
+	User string
+}
+
+type ServicePort struct {
+	TargetPort uint32
+	Port       uint32
+	HostIP     string
 }
 
 type Mount struct {
@@ -87,7 +101,7 @@ func (s *Supervisor) Start(svcs []Service) error {
 	images := map[string]containerd.Image{}
 
 	for _, svc := range svcs {
-		fmt.Printf("Preparing: %s with image: %s\n", svc.Name, svc.Image)
+		fmt.Printf("Preparing %s with image: %s\n", svc.Name, svc.Image)
 
 		img, err := service.PrepareImage(ctx, s.client, svc.Image, defaultSnapshotter, faasServicesPullAlways)
 		if err != nil {
@@ -99,12 +113,26 @@ func (s *Supervisor) Start(svcs []Service) error {
 	}
 
 	for _, svc := range svcs {
-		fmt.Printf("Reconciling: %s\n", svc.Name)
-
+		fmt.Printf("Removing old container for: %s\n", svc.Name)
 		containerErr := service.Remove(ctx, s.client, svc.Name)
 		if containerErr != nil {
 			return containerErr
 		}
+	}
+
+	order := buildDeploymentOrder(svcs)
+
+	for _, key := range order {
+
+		var svc *Service
+		for _, s := range svcs {
+			if s.Name == key {
+				svc = &s
+				break
+			}
+		}
+
+		fmt.Printf("Starting: %s\n", svc.Name)
 
 		image := images[svc.Name]
 
@@ -118,7 +146,6 @@ func (s *Supervisor) Start(svcs []Service) error {
 					Options:     []string{"rbind", "rw"},
 				})
 			}
-
 		}
 
 		mounts = append(mounts, specs.Mount{
@@ -135,59 +162,67 @@ func (s *Supervisor) Start(svcs []Service) error {
 			Options:     []string{"rbind", "ro"},
 		})
 
-		newContainer, containerCreateErr := s.client.NewContainer(
+		if len(svc.User) > 0 {
+			log.Printf("Running %s with user: %q", svc.Name, svc.User)
+		}
+
+		newContainer, err := s.client.NewContainer(
 			ctx,
 			svc.Name,
 			containerd.WithImage(image),
 			containerd.WithNewSnapshot(svc.Name+"-snapshot", image),
 			containerd.WithNewSpec(oci.WithImageConfig(image),
+				oci.WithHostname(svc.Name),
+				withUserOrDefault(svc.User),
 				oci.WithCapabilities(svc.Caps),
 				oci.WithMounts(mounts),
 				withOCIArgs(svc.Args),
 				oci.WithEnv(svc.Env)),
 		)
 
-		if containerCreateErr != nil {
-			log.Printf("Error creating container %s\n", containerCreateErr)
-			return containerCreateErr
+		if err != nil {
+			log.Printf("Error creating container: %s\n", err)
+			return err
 		}
 
-		log.Printf("Created container %s\n", newContainer.ID())
+		log.Printf("Created container: %s\n", newContainer.ID())
 
-		task, err := newContainer.NewTask(ctx, cio.NewCreator(cio.WithStdio))
+		task, err := newContainer.NewTask(ctx, cio.BinaryIO("/usr/local/bin/faasd", nil))
 		if err != nil {
 			log.Printf("Error creating task: %s\n", err)
 			return err
 		}
 
 		labels := map[string]string{}
-		network, err := cninetwork.CreateCNINetwork(ctx, s.cni, task, labels)
-
+		_, err = cninetwork.CreateCNINetwork(ctx, s.cni, task, labels)
 		if err != nil {
+			log.Printf("Error creating CNI for %s: %s", svc.Name, err)
 			return err
 		}
 
-		ip, err := cninetwork.GetIPAddress(network, task)
+		ip, err := cninetwork.GetIPAddress(svc.Name, task.Pid())
 		if err != nil {
+			log.Printf("Error getting IP for %s: %s", svc.Name, err)
 			return err
 		}
-		log.Printf("%s has IP: %s\n", newContainer.ID(), ip.String())
 
-		hosts, _ := ioutil.ReadFile("hosts")
+		log.Printf("%s has IP: %s\n", newContainer.ID(), ip)
+
+		hosts, err := ioutil.ReadFile("hosts")
+		if err != nil {
+			log.Printf("Unable to read hosts file: %s\n", err.Error())
+		}
 
 		hosts = []byte(string(hosts) + fmt.Sprintf(`
 %s	%s
 `, ip, svc.Name))
-		writeErr := ioutil.WriteFile("hosts", hosts, workingDirectoryPermission)
 
-		if writeErr != nil {
-			log.Printf("Error writing file %s %s\n", "hosts", writeErr)
+		if err := ioutil.WriteFile("hosts", hosts, workingDirectoryPermission); err != nil {
+			log.Printf("Error writing file: %s %s\n", "hosts", err)
 		}
-		// os.Chown("hosts", 101, 101)
 
-		_, err = task.Wait(ctx)
-		if err != nil {
-			log.Printf("Wait err: %s\n", err)
+		if _, err := task.Wait(ctx); err != nil {
+			log.Printf("Task wait error: %s\n", err)
 			return err
 		}
 
@@ -195,7 +230,7 @@ func (s *Supervisor) Start(svcs []Service) error {
 		// log.Println("Exited: ", exitStatusC)
 
 		if err = task.Start(ctx); err != nil {
-			log.Printf("Task err: %s\n", err)
+			log.Printf("Task start error: %s\n", err)
 			return err
 		}
 	}
@@ -225,6 +260,16 @@ func (s *Supervisor) Remove(svcs []Service) error {
 	return nil
 }
 
+func withUserOrDefault(userstr string) oci.SpecOpts {
+	if len(userstr) > 0 {
+		return oci.WithUser(userstr)
+	}
+
+	return func(_ context.Context, _ oci.Client, _ *containers.Container, s *oci.Spec) error {
+		return nil
+	}
+}
+
 func withOCIArgs(args []string) oci.SpecOpts {
 	if len(args) > 0 {
 		return oci.WithProcessArgs(args...)
@@ -234,3 +279,137 @@ func withOCIArgs(args []string) oci.SpecOpts {
 		return nil
 	}
 }
+
+// ParseCompose converts a docker-compose Config into a service list that we can
+// pass to the supervisor client Start.
+//
+// The only anticipated error is a failure if the value mounts are not of type 	`bind`.
+func ParseCompose(config *compose.Config) ([]Service, error) {
+	services := make([]Service, len(config.Services))
+	for idx, s := range config.Services {
+		// environment is a map[string]*string
+		// but we want a []string
+
+		var env []string
+
+		envKeys := sortedEnvKeys(s.Environment)
+		for _, name := range envKeys {
+			value := s.Environment[name]
+			if value == nil {
+				env = append(env, fmt.Sprintf(`%s=""`, name))
+			} else {
+				env = append(env, fmt.Sprintf(`%s=%s`, name, *value))
+			}
+		}
+
+		var mounts []Mount
+		for _, v := range s.Volumes {
+			if v.Type != "bind" {
+				return nil, errors.Errorf("unsupported volume mount type '%s' when parsing service '%s'", v.Type, s.Name)
+			}
+			mounts = append(mounts, Mount{
+				Src:  v.Source,
+				Dest: v.Target,
+			})
+		}
+
+		services[idx] = Service{
+			Name:  s.Name,
+			Image: s.Image,
+			// ShellCommand is just an alias of string slice
+			Args:      []string(s.Command),
+			Caps:      s.CapAdd,
+			Env:       env,
+			Mounts:    mounts,
+			DependsOn: s.DependsOn,
+			User:      s.User,
+			Ports:     convertPorts(s.Ports),
+		}
+	}
+
+	return services, nil
+}
+
+func convertPorts(ports []compose.ServicePortConfig) []ServicePort {
+	servicePorts := []ServicePort{}
+	for _, p := range ports {
+		servicePorts = append(servicePorts, ServicePort{
+			Port:       p.Published,
+			TargetPort: p.Target,
+			HostIP:     p.HostIP,
+		})
+	}
+
+	return servicePorts
+}
+
+// LoadComposeFile is a helper method for loading a docker-compose file
+func LoadComposeFile(wd string, file string) (*compose.Config, error) {
+	return LoadComposeFileWithArch(wd, file, env.GetClientArch)
+}
+
+// LoadComposeFileWithArch is a helper method for loading a docker-compose file
+func LoadComposeFileWithArch(wd string, file string, archGetter ArchGetter) (*compose.Config, error) {
+
+	file = path.Join(wd, file)
+	b, err := ioutil.ReadFile(file)
+	if err != nil {
+		return nil, err
+	}
+
+	config, err := loader.ParseYAML(b)
+	if err != nil {
+		return nil, err
+	}
+
+	archSuffix, err := GetArchSuffix(archGetter)
+	if err != nil {
+		return nil, err
+	}
+
+	var files []compose.ConfigFile
+	files = append(files, compose.ConfigFile{Filename: file, Config: config})
+
+	return loader.Load(compose.ConfigDetails{
+		WorkingDir:  wd,
+		ConfigFiles: files,
+		Environment: map[string]string{
+			"ARCH_SUFFIX": archSuffix,
+		},
+	})
+}
+
+func sortedEnvKeys(env map[string]*string) (keys []string) {
+	for k := range env {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
+	return keys
+}
+
+// ArchGetter provides client CPU architecture and
+// client OS
+type ArchGetter func() (string, string)
+
+// GetArchSuffix provides client CPU architecture and
+// client OS from ArchGetter
+func GetArchSuffix(getClientArch ArchGetter) (suffix string, err error) {
+	clientArch, clientOS := getClientArch()
+
+	if clientOS != "Linux" {
+		return "", fmt.Errorf("you can only use faasd with Linux")
+	}
+
+	switch clientArch {
+	case "x86_64":
+		// no suffix needed
+		return "", nil
+	case "armhf", "armv7l":
+		return "-armhf", nil
+	case "arm64", "aarch64":
+		return "-arm64", nil
+	default:
+		// unknown, so use the default without suffix for now
+		return "", nil
+	}
+}

pkg/supervisor_test.go

@@ -0,0 +1,262 @@
+package pkg
+
+import (
+	"path"
+	"reflect"
+	"testing"
+)
+
+func Test_ParseCompose(t *testing.T) {
+
+	wd := "testdata"
+
+	want := map[string]Service{
+		"basic-auth-plugin": {
+			Name:  "basic-auth-plugin",
+			Image: "docker.io/openfaas/basic-auth-plugin:0.18.17",
+			Env: []string{
+				"pass_filename=basic-auth-password",
+				"port=8080",
+				"secret_mount_path=/run/secrets",
+				"user_filename=basic-auth-user",
+			},
+			Mounts: []Mount{
+				{
+					Src:  path.Join(wd, "secrets", "basic-auth-password"),
+					Dest: path.Join("/run/secrets", "basic-auth-password"),
+				},
+				{
+					Src:  path.Join(wd, "secrets", "basic-auth-user"),
+					Dest: path.Join("/run/secrets", "basic-auth-user"),
+				},
+			},
+			Caps: []string{"CAP_NET_RAW"},
+		},
+		"nats": {
+			Name:  "nats",
+			Image: "docker.io/library/nats-streaming:0.11.2",
+			Args:  []string{"/nats-streaming-server", "-m", "8222", "--store=memory", "--cluster_id=faas-cluster"},
+		},
+		"prometheus": {
+			Name:  "prometheus",
+			Image: "docker.io/prom/prometheus:v2.14.0",
+			Mounts: []Mount{
+				{
+					Src:  path.Join(wd, "prometheus.yml"),
+					Dest: "/etc/prometheus/prometheus.yml",
+				},
+			},
+			Caps: []string{"CAP_NET_RAW"},
+		},
+		"gateway": {
+			Name: "gateway",
+			Env: []string{
+				"auth_proxy_pass_body=false",
+				"auth_proxy_url=http://basic-auth-plugin:8080/validate",
+				"basic_auth=true",
+				"direct_functions=false",
+				"faas_nats_address=nats",
+				"faas_nats_port=4222",
+				"functions_provider_url=http://faasd-provider:8081/",
+				"read_timeout=60s",
+				"scale_from_zero=true",
+				"secret_mount_path=/run/secrets",
+				"upstream_timeout=65s",
+				"write_timeout=60s",
+			},
+			Image: "docker.io/openfaas/gateway:0.18.17",
+			Mounts: []Mount{
+				{
+					Src:  path.Join(wd, "secrets", "basic-auth-password"),
+					Dest: path.Join("/run/secrets", "basic-auth-password"),
+				},
+				{
+					Src:  path.Join(wd, "secrets", "basic-auth-user"),
+					Dest: path.Join("/run/secrets", "basic-auth-user"),
+				},
+			},
+			Caps:      []string{"CAP_NET_RAW"},
+			DependsOn: []string{"nats"},
+		},
+		"queue-worker": {
+			Name: "queue-worker",
+			Env: []string{
+				"ack_wait=5m5s",
+				"basic_auth=true",
+				"faas_gateway_address=gateway",
+				"faas_nats_address=nats",
+				"faas_nats_port=4222",
+				"gateway_invoke=true",
+				"max_inflight=1",
+				"secret_mount_path=/run/secrets",
+				"write_debug=false",
+			},
+			Image: "docker.io/openfaas/queue-worker:0.11.2",
+			Mounts: []Mount{
+				{
+					Src:  path.Join(wd, "secrets", "basic-auth-password"),
+					Dest: path.Join("/run/secrets", "basic-auth-password"),
+				},
+				{
+					Src:  path.Join(wd, "secrets", "basic-auth-user"),
+					Dest: path.Join("/run/secrets", "basic-auth-user"),
+				},
+			},
+			Caps: []string{"CAP_NET_RAW"},
+		},
+	}
+
+	compose, err := LoadComposeFileWithArch(wd, "docker-compose.yaml", func() (string, string) { return "x86_64", "Linux" })
+	if err != nil {
+		t.Fatalf("can't read docker-compose file: %s", err)
+	}
+
+	services, err := ParseCompose(compose)
+	if err != nil {
+		t.Fatalf("can't parse compose services: %s", err)
+	}
+
+	if len(services) != len(want) {
+		t.Fatalf("want: %d services, got: %d", len(want), len(services))
+	}
+
+	for _, service := range services {
+		exp, ok := want[service.Name]
+
+		if service.Name == "gateway" {
+			if len(service.DependsOn) == 0 {
+				t.Fatalf("gateway should have at least one depends_on entry")
+			}
+		}
+
+		if !ok {
+			t.Fatalf("incorrect service: %s", service.Name)
+		}
+
+		if service.Name != exp.Name {
+			t.Fatalf("incorrect service Name:\n\twant: %s,\n\tgot: %s", exp.Name, service.Name)
+		}
+
+		if service.Image != exp.Image {
+			t.Fatalf("incorrect service Image:\n\twant: %s,\n\tgot: %s", exp.Image, service.Image)
+		}
+
+		equalStringSlice(t, exp.Env, service.Env)
+		equalStringSlice(t, exp.Caps, service.Caps)
+		equalStringSlice(t, exp.Args, service.Args)
+
+		if !reflect.DeepEqual(exp.Mounts, service.Mounts) {
+			t.Fatalf("incorrect service Mounts:\n\twant: %+v,\n\tgot: %+v", exp.Mounts, service.Mounts)
+		}
+	}
+}
+
+func equalStringSlice(t *testing.T, want, found []string) {
+	t.Helper()
+	if (want == nil) != (found == nil) {
+		t.Fatalf("unexpected nil slice: want %+v, got %+v", want, found)
+	}
+
+	if len(want) != len(found) {
+		t.Fatalf("unequal slice length: want %+v, got %+v", want, found)
+	}
+
+	for i := range want {
+		if want[i] != found[i] {
+			t.Fatalf("unexpected value at postition %d: want %s, got %s", i, want[i], found[i])
+		}
+	}
+}
+
+func equalMountSlice(t *testing.T, want, found []Mount) {
+	t.Helper()
+	if (want == nil) != (found == nil) {
+		t.Fatalf("unexpected nil slice: want %+v, got %+v", want, found)
+	}
+
+	if len(want) != len(found) {
+		t.Fatalf("unequal slice length: want %+v, got %+v", want, found)
+	}
+
+	for i := range want {
+		if !reflect.DeepEqual(want[i], found[i]) {
+			t.Fatalf("unexpected value at postition %d: want %s, got %s", i, want[i], found[i])
+		}
+	}
+}
+
+func Test_GetArchSuffix(t *testing.T) {
+	cases := []struct {
+		name      string
+		want      string
+		foundArch string
+		foundOS   string
+		err       string
+	}{
+		{
+			name:    "error if os is not linux",
+			foundOS: "mac",
+			err:     "you can only use faasd with Linux",
+		},
+		{
+			name:      "x86 has no suffix",
+			foundOS:   "Linux",
+			foundArch: "x86_64",
+			want:      "",
+		},
+		{
+			name:      "unknown arch has no suffix",
+			foundOS:   "Linux",
+			foundArch: "anything_else",
+			want:      "",
+		},
+		{
+			name:      "armhf has armhf suffix",
+			foundOS:   "Linux",
+			foundArch: "armhf",
+			want:      "-armhf",
+		},
+		{
+			name:      "armv7l has armhf suffix",
+			foundOS:   "Linux",
+			foundArch: "armv7l",
+			want:      "-armhf",
+		},
+		{
+			name:      "arm64 has arm64 suffix",
+			foundOS:   "Linux",
+			foundArch: "arm64",
+			want:      "-arm64",
+		},
+		{
+			name:      "aarch64 has arm64 suffix",
+			foundOS:   "Linux",
+			foundArch: "aarch64",
+			want:      "-arm64",
+		},
+	}
+
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+
+			suffix, err := GetArchSuffix(testArchGetter(tc.foundArch, tc.foundOS))
+			if tc.err != "" && err == nil {
+				t.Fatalf("want error %s but got nil", tc.err)
+			} else if tc.err != "" && err.Error() != tc.err {
+				t.Fatalf("want error %s, got %s", tc.err, err.Error())
+			} else if tc.err == "" && err != nil {
+				t.Fatalf("unexpected error %s", err.Error())
+			}
+
+			if suffix != tc.want {
+				t.Fatalf("want suffix %s, got %s", tc.want, suffix)
+			}
+		})
+	}
+}
+
+func testArchGetter(arch, os string) ArchGetter {
+	return func() (string, string) {
+		return arch, os
+	}
+}

pkg/testdata/docker-compose.yaml

@@ -0,0 +1,98 @@
+version: "3.7"
+services:
+  basic-auth-plugin:
+    image: "docker.io/openfaas/basic-auth-plugin:0.18.17${ARCH_SUFFIX}"
+    environment:
+      - port=8080
+      - secret_mount_path=/run/secrets
+      - user_filename=basic-auth-user
+      - pass_filename=basic-auth-password
+    volumes:
+      # we assume cwd == /var/lib/faasd
+      - type: bind
+        source: ./secrets/basic-auth-password
+        target: /run/secrets/basic-auth-password
+      - type: bind
+        source: ./secrets/basic-auth-user
+        target: /run/secrets/basic-auth-user
+    cap_add:
+      - CAP_NET_RAW
+
+  nats:
+    image: docker.io/library/nats-streaming:0.11.2
+    command:
+      - "/nats-streaming-server"
+      - "-m"
+      - "8222"
+      - "--store=memory"
+      - "--cluster_id=faas-cluster"
+    ports:
+       - "127.0.0.1:8222:8222"
+
+  prometheus:
+    image: docker.io/prom/prometheus:v2.14.0
+    volumes:
+      - type: bind
+        source: ./prometheus.yml
+        target: /etc/prometheus/prometheus.yml
+    cap_add:
+      - CAP_NET_RAW
+    ports:
+       - "127.0.0.1:9090:9090"
+
+  gateway:
+    image: "docker.io/openfaas/gateway:0.18.17${ARCH_SUFFIX}"
+    environment:
+      - basic_auth=true
+      - functions_provider_url=http://faasd-provider:8081/
+      - direct_functions=false
+      - read_timeout=60s
+      - write_timeout=60s
+      - upstream_timeout=65s
+      - faas_nats_address=nats
+      - faas_nats_port=4222
+      - auth_proxy_url=http://basic-auth-plugin:8080/validate
+      - auth_proxy_pass_body=false
+      - secret_mount_path=/run/secrets
+      - scale_from_zero=true
+    volumes:
+      # we assume cwd == /var/lib/faasd
+      - type: bind
+        source: ./secrets/basic-auth-password
+        target: /run/secrets/basic-auth-password
+      - type: bind
+        source: ./secrets/basic-auth-user
+        target: /run/secrets/basic-auth-user
+    cap_add:
+      - CAP_NET_RAW
+    depends_on:
+      - basic-auth-plugin
+      - nats
+      - prometheus
+    ports:
+       - "8080:8080"
+
+  queue-worker:
+    image: docker.io/openfaas/queue-worker:0.11.2
+    environment:
+      - faas_nats_address=nats
+      - faas_nats_port=4222
+      - gateway_invoke=true
+      - faas_gateway_address=gateway
+      - ack_wait=5m5s
+      - max_inflight=1
+      - write_debug=false
+      - basic_auth=true
+      - secret_mount_path=/run/secrets
+    volumes:
+      # we assume cwd == /var/lib/faasd
+      - type: bind
+        source: ./secrets/basic-auth-password
+        target: /run/secrets/basic-auth-password
+      - type: bind
+        source: ./secrets/basic-auth-user
+        target: /run/secrets/basic-auth-user
+    cap_add:
+      - CAP_NET_RAW
+    depends_on:
+      - nats

vendor/github.com/Microsoft/hcsshim/cmd/runhcs/NOTICE

@@ -1,22 +0,0 @@
-runhcs is a fork of runc.
-
-The following is runc's legal notice.
-
----
-
-runc
-
-Copyright 2012-2015 Docker, Inc.
-
-This product includes software developed at Docker, Inc. (http://www.docker.com).
-
-The following is courtesy of our legal counsel:
-
-Use and transfer of Docker may be subject to certain restrictions by the
-United States and other governments.
-It is your responsibility to ensure that your use and/or transfer does not
-violate applicable laws.
-
-For more information, please see http://www.bis.doc.gov
-
-See also http://www.apache.org/dev/crypto.html and/or seek legal counsel.

vendor/github.com/Microsoft/hcsshim/mksyscall_windows.go

@@ -1,943 +0,0 @@
-// Copyright 2013 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-/*
-mksyscall_windows generates windows system call bodies
-
-It parses all files specified on command line containing function
-prototypes (like syscall_windows.go) and prints system call bodies
-to standard output.
-
-The prototypes are marked by lines beginning with "//sys" and read
-like func declarations if //sys is replaced by func, but:
-
-* The parameter lists must give a name for each argument. This
-  includes return parameters.
-
-* The parameter lists must give a type for each argument:
-  the (x, y, z int) shorthand is not allowed.
-
-* If the return parameter is an error number, it must be named err.
-
-* If go func name needs to be different from it's winapi dll name,
-  the winapi name could be specified at the end, after "=" sign, like
-  //sys LoadLibrary(libname string) (handle uint32, err error) = LoadLibraryA
-
-* Each function that returns err needs to supply a condition, that
-  return value of winapi will be tested against to detect failure.
-  This would set err to windows "last-error", otherwise it will be nil.
-  The value can be provided at end of //sys declaration, like
-  //sys LoadLibrary(libname string) (handle uint32, err error) [failretval==-1] = LoadLibraryA
-  and is [failretval==0] by default.
-
-Usage:
-	mksyscall_windows [flags] [path ...]
-
-The flags are:
-	-output
-		Specify output file name (outputs to console if blank).
-	-trace
-		Generate print statement after every syscall.
-*/
-package main
-
-import (
-	"bufio"
-	"bytes"
-	"errors"
-	"flag"
-	"fmt"
-	"go/format"
-	"go/parser"
-	"go/token"
-	"io"
-	"io/ioutil"
-	"log"
-	"os"
-	"path/filepath"
-	"runtime"
-	"sort"
-	"strconv"
-	"strings"
-	"text/template"
-)
-
-var (
-	filename       = flag.String("output", "", "output file name (standard output if omitted)")
-	printTraceFlag = flag.Bool("trace", false, "generate print statement after every syscall")
-	systemDLL      = flag.Bool("systemdll", true, "whether all DLLs should be loaded from the Windows system directory")
-	winio          = flag.Bool("winio", false, "import go-winio")
-)
-
-func trim(s string) string {
-	return strings.Trim(s, " \t")
-}
-
-var packageName string
-
-func packagename() string {
-	return packageName
-}
-
-func syscalldot() string {
-	if packageName == "syscall" {
-		return ""
-	}
-	return "syscall."
-}
-
-// Param is function parameter
-type Param struct {
-	Name      string
-	Type      string
-	fn        *Fn
-	tmpVarIdx int
-}
-
-// tmpVar returns temp variable name that will be used to represent p during syscall.
-func (p *Param) tmpVar() string {
-	if p.tmpVarIdx < 0 {
-		p.tmpVarIdx = p.fn.curTmpVarIdx
-		p.fn.curTmpVarIdx++
-	}
-	return fmt.Sprintf("_p%d", p.tmpVarIdx)
-}
-
-// BoolTmpVarCode returns source code for bool temp variable.
-func (p *Param) BoolTmpVarCode() string {
-	const code = `var %s uint32
-	if %s {
-		%s = 1
-	} else {
-		%s = 0
-	}`
-	tmp := p.tmpVar()
-	return fmt.Sprintf(code, tmp, p.Name, tmp, tmp)
-}
-
-// SliceTmpVarCode returns source code for slice temp variable.
-func (p *Param) SliceTmpVarCode() string {
-	const code = `var %s *%s
-	if len(%s) > 0 {
-		%s = &%s[0]
-	}`
-	tmp := p.tmpVar()
-	return fmt.Sprintf(code, tmp, p.Type[2:], p.Name, tmp, p.Name)
-}
-
-// StringTmpVarCode returns source code for string temp variable.
-func (p *Param) StringTmpVarCode() string {
-	errvar := p.fn.Rets.ErrorVarName()
-	if errvar == "" {
-		errvar = "_"
-	}
-	tmp := p.tmpVar()
-	const code = `var %s %s
-	%s, %s = %s(%s)`
-	s := fmt.Sprintf(code, tmp, p.fn.StrconvType(), tmp, errvar, p.fn.StrconvFunc(), p.Name)
-	if errvar == "-" {
-		return s
-	}
-	const morecode = `
-	if %s != nil {
-		return
-	}`
-	return s + fmt.Sprintf(morecode, errvar)
-}
-
-// TmpVarCode returns source code for temp variable.
-func (p *Param) TmpVarCode() string {
-	switch {
-	case p.Type == "bool":
-		return p.BoolTmpVarCode()
-	case strings.HasPrefix(p.Type, "[]"):
-		return p.SliceTmpVarCode()
-	default:
-		return ""
-	}
-}
-
-// TmpVarHelperCode returns source code for helper's temp variable.
-func (p *Param) TmpVarHelperCode() string {
-	if p.Type != "string" {
-		return ""
-	}
-	return p.StringTmpVarCode()
-}
-
-// SyscallArgList returns source code fragments representing p parameter
-// in syscall. Slices are translated into 2 syscall parameters: pointer to
-// the first element and length.
-func (p *Param) SyscallArgList() []string {
-	t := p.HelperType()
-	var s string
-	switch {
-	case t[0] == '*':
-		s = fmt.Sprintf("unsafe.Pointer(%s)", p.Name)
-	case t == "bool":
-		s = p.tmpVar()
-	case strings.HasPrefix(t, "[]"):
-		return []string{
-			fmt.Sprintf("uintptr(unsafe.Pointer(%s))", p.tmpVar()),
-			fmt.Sprintf("uintptr(len(%s))", p.Name),
-		}
-	default:
-		s = p.Name
-	}
-	return []string{fmt.Sprintf("uintptr(%s)", s)}
-}
-
-// IsError determines if p parameter is used to return error.
-func (p *Param) IsError() bool {
-	return p.Name == "err" && p.Type == "error"
-}
-
-// HelperType returns type of parameter p used in helper function.
-func (p *Param) HelperType() string {
-	if p.Type == "string" {
-		return p.fn.StrconvType()
-	}
-	return p.Type
-}
-
-// join concatenates parameters ps into a string with sep separator.
-// Each parameter is converted into string by applying fn to it
-// before conversion.
-func join(ps []*Param, fn func(*Param) string, sep string) string {
-	if len(ps) == 0 {
-		return ""
-	}
-	a := make([]string, 0)
-	for _, p := range ps {
-		a = append(a, fn(p))
-	}
-	return strings.Join(a, sep)
-}
-
-// Rets describes function return parameters.
-type Rets struct {
-	Name         string
-	Type         string
-	ReturnsError bool
-	FailCond     string
-}
-
-// ErrorVarName returns error variable name for r.
-func (r *Rets) ErrorVarName() string {
-	if r.ReturnsError {
-		return "err"
-	}
-	if r.Type == "error" {
-		return r.Name
-	}
-	return ""
-}
-
-// ToParams converts r into slice of *Param.
-func (r *Rets) ToParams() []*Param {
-	ps := make([]*Param, 0)
-	if len(r.Name) > 0 {
-		ps = append(ps, &Param{Name: r.Name, Type: r.Type})
-	}
-	if r.ReturnsError {
-		ps = append(ps, &Param{Name: "err", Type: "error"})
-	}
-	return ps
-}
-
-// List returns source code of syscall return parameters.
-func (r *Rets) List() string {
-	s := join(r.ToParams(), func(p *Param) string { return p.Name + " " + p.Type }, ", ")
-	if len(s) > 0 {
-		s = "(" + s + ")"
-	}
-	return s
-}
-
-// PrintList returns source code of trace printing part correspondent
-// to syscall return values.
-func (r *Rets) PrintList() string {
-	return join(r.ToParams(), func(p *Param) string { return fmt.Sprintf(`"%s=", %s, `, p.Name, p.Name) }, `", ", `)
-}
-
-// SetReturnValuesCode returns source code that accepts syscall return values.
-func (r *Rets) SetReturnValuesCode() string {
-	if r.Name == "" && !r.ReturnsError {
-		return ""
-	}
-	retvar := "r0"
-	if r.Name == "" {
-		retvar = "r1"
-	}
-	errvar := "_"
-	if r.ReturnsError {
-		errvar = "e1"
-	}
-	return fmt.Sprintf("%s, _, %s := ", retvar, errvar)
-}
-
-func (r *Rets) useLongHandleErrorCode(retvar string) string {
-	const code = `if %s {
-		if e1 != 0 {
-			err = errnoErr(e1)
-		} else {
-			err = %sEINVAL
-		}
-	}`
-	cond := retvar + " == 0"
-	if r.FailCond != "" {
-		cond = strings.Replace(r.FailCond, "failretval", retvar, 1)
-	}
-	return fmt.Sprintf(code, cond, syscalldot())
-}
-
-// SetErrorCode returns source code that sets return parameters.
-func (r *Rets) SetErrorCode() string {
-	const code = `if r0 != 0 {
-		%s = %sErrno(r0)
-	}`
-	const hrCode = `if int32(r0) < 0 {
-		if r0&0x1fff0000 == 0x00070000 {
-			r0 &= 0xffff
-		}
-		%s = %sErrno(r0)
-	}`
-	if r.Name == "" && !r.ReturnsError {
-		return ""
-	}
-	if r.Name == "" {
-		return r.useLongHandleErrorCode("r1")
-	}
-	if r.Type == "error" {
-		if r.Name == "hr" {
-			return fmt.Sprintf(hrCode, r.Name, syscalldot())
-		} else {
-			return fmt.Sprintf(code, r.Name, syscalldot())
-		}
-	}
-	s := ""
-	switch {
-	case r.Type[0] == '*':
-		s = fmt.Sprintf("%s = (%s)(unsafe.Pointer(r0))", r.Name, r.Type)
-	case r.Type == "bool":
-		s = fmt.Sprintf("%s = r0 != 0", r.Name)
-	default:
-		s = fmt.Sprintf("%s = %s(r0)", r.Name, r.Type)
-	}
-	if !r.ReturnsError {
-		return s
-	}
-	return s + "\n\t" + r.useLongHandleErrorCode(r.Name)
-}
-
-// Fn describes syscall function.
-type Fn struct {
-	Name        string
-	Params      []*Param
-	Rets        *Rets
-	PrintTrace  bool
-	confirmproc bool
-	dllname     string
-	dllfuncname string
-	src         string
-	// TODO: get rid of this field and just use parameter index instead
-	curTmpVarIdx int // insure tmp variables have uniq names
-}
-
-// extractParams parses s to extract function parameters.
-func extractParams(s string, f *Fn) ([]*Param, error) {
-	s = trim(s)
-	if s == "" {
-		return nil, nil
-	}
-	a := strings.Split(s, ",")
-	ps := make([]*Param, len(a))
-	for i := range ps {
-		s2 := trim(a[i])
-		b := strings.Split(s2, " ")
-		if len(b) != 2 {
-			b = strings.Split(s2, "\t")
-			if len(b) != 2 {
-				return nil, errors.New("Could not extract function parameter from \"" + s2 + "\"")
-			}
-		}
-		ps[i] = &Param{
-			Name:      trim(b[0]),
-			Type:      trim(b[1]),
-			fn:        f,
-			tmpVarIdx: -1,
-		}
-	}
-	return ps, nil
-}
-
-// extractSection extracts text out of string s starting after start
-// and ending just before end. found return value will indicate success,
-// and prefix, body and suffix will contain correspondent parts of string s.
-func extractSection(s string, start, end rune) (prefix, body, suffix string, found bool) {
-	s = trim(s)
-	if strings.HasPrefix(s, string(start)) {
-		// no prefix
-		body = s[1:]
-	} else {
-		a := strings.SplitN(s, string(start), 2)
-		if len(a) != 2 {
-			return "", "", s, false
-		}
-		prefix = a[0]
-		body = a[1]
-	}
-	a := strings.SplitN(body, string(end), 2)
-	if len(a) != 2 {
-		return "", "", "", false
-	}
-	return prefix, a[0], a[1], true
-}
-
-// newFn parses string s and return created function Fn.
-func newFn(s string) (*Fn, error) {
-	s = trim(s)
-	f := &Fn{
-		Rets:       &Rets{},
-		src:        s,
-		PrintTrace: *printTraceFlag,
-	}
-	// function name and args
-	prefix, body, s, found := extractSection(s, '(', ')')
-	if !found || prefix == "" {
-		return nil, errors.New("Could not extract function name and parameters from \"" + f.src + "\"")
-	}
-	f.Name = prefix
-	var err error
-	f.Params, err = extractParams(body, f)
-	if err != nil {
-		return nil, err
-	}
-	// return values
-	_, body, s, found = extractSection(s, '(', ')')
-	if found {
-		r, err := extractParams(body, f)
-		if err != nil {
-			return nil, err
-		}
-		switch len(r) {
-		case 0:
-		case 1:
-			if r[0].IsError() {
-				f.Rets.ReturnsError = true
-			} else {
-				f.Rets.Name = r[0].Name
-				f.Rets.Type = r[0].Type
-			}
-		case 2:
-			if !r[1].IsError() {
-				return nil, errors.New("Only last windows error is allowed as second return value in \"" + f.src + "\"")
-			}
-			f.Rets.ReturnsError = true
-			f.Rets.Name = r[0].Name
-			f.Rets.Type = r[0].Type
-		default:
-			return nil, errors.New("Too many return values in \"" + f.src + "\"")
-		}
-	}
-	// fail condition
-	_, body, s, found = extractSection(s, '[', ']')
-	if found {
-		f.Rets.FailCond = body
-	}
-	// dll and dll function names
-	s = trim(s)
-	if s == "" {
-		return f, nil
-	}
-	if !strings.HasPrefix(s, "=") {
-		return nil, errors.New("Could not extract dll name from \"" + f.src + "\"")
-	}
-	s = trim(s[1:])
-	a := strings.Split(s, ".")
-	switch len(a) {
-	case 1:
-		f.dllfuncname = a[0]
-	case 2:
-		f.dllname = a[0]
-		f.dllfuncname = a[1]
-	default:
-		return nil, errors.New("Could not extract dll name from \"" + f.src + "\"")
-	}
-	if f.dllfuncname[len(f.dllfuncname)-1] == '?' {
-		f.confirmproc = true
-		f.dllfuncname = f.dllfuncname[0 : len(f.dllfuncname)-1]
-	}
-	return f, nil
-}
-
-// DLLName returns DLL name for function f.
-func (f *Fn) DLLName() string {
-	if f.dllname == "" {
-		return "kernel32"
-	}
-	return f.dllname
-}
-
-// DLLName returns DLL function name for function f.
-func (f *Fn) DLLFuncName() string {
-	if f.dllfuncname == "" {
-		return f.Name
-	}
-	return f.dllfuncname
-}
-
-func (f *Fn) ConfirmProc() bool {
-	return f.confirmproc
-}
-
-// ParamList returns source code for function f parameters.
-func (f *Fn) ParamList() string {
-	return join(f.Params, func(p *Param) string { return p.Name + " " + p.Type }, ", ")
-}
-
-// HelperParamList returns source code for helper function f parameters.
-func (f *Fn) HelperParamList() string {
-	return join(f.Params, func(p *Param) string { return p.Name + " " + p.HelperType() }, ", ")
-}
-
-// ParamPrintList returns source code of trace printing part correspondent
-// to syscall input parameters.
-func (f *Fn) ParamPrintList() string {
-	return join(f.Params, func(p *Param) string { return fmt.Sprintf(`"%s=", %s, `, p.Name, p.Name) }, `", ", `)
-}
-
-// ParamCount return number of syscall parameters for function f.
-func (f *Fn) ParamCount() int {
-	n := 0
-	for _, p := range f.Params {
-		n += len(p.SyscallArgList())
-	}
-	return n
-}
-
-// SyscallParamCount determines which version of Syscall/Syscall6/Syscall9/...
-// to use. It returns parameter count for correspondent SyscallX function.
-func (f *Fn) SyscallParamCount() int {
-	n := f.ParamCount()
-	switch {
-	case n <= 3:
-		return 3
-	case n <= 6:
-		return 6
-	case n <= 9:
-		return 9
-	case n <= 12:
-		return 12
-	case n <= 15:
-		return 15
-	default:
-		panic("too many arguments to system call")
-	}
-}
-
-// Syscall determines which SyscallX function to use for function f.
-func (f *Fn) Syscall() string {
-	c := f.SyscallParamCount()
-	if c == 3 {
-		return syscalldot() + "Syscall"
-	}
-	return syscalldot() + "Syscall" + strconv.Itoa(c)
-}
-
-// SyscallParamList returns source code for SyscallX parameters for function f.
-func (f *Fn) SyscallParamList() string {
-	a := make([]string, 0)
-	for _, p := range f.Params {
-		a = append(a, p.SyscallArgList()...)
-	}
-	for len(a) < f.SyscallParamCount() {
-		a = append(a, "0")
-	}
-	return strings.Join(a, ", ")
-}
-
-// HelperCallParamList returns source code of call into function f helper.
-func (f *Fn) HelperCallParamList() string {
-	a := make([]string, 0, len(f.Params))
-	for _, p := range f.Params {
-		s := p.Name
-		if p.Type == "string" {
-			s = p.tmpVar()
-		}
-		a = append(a, s)
-	}
-	return strings.Join(a, ", ")
-}
-
-// IsUTF16 is true, if f is W (utf16) function. It is false
-// for all A (ascii) functions.
-func (_ *Fn) IsUTF16() bool {
-	return true
-}
-
-// StrconvFunc returns name of Go string to OS string function for f.
-func (f *Fn) StrconvFunc() string {
-	if f.IsUTF16() {
-		return syscalldot() + "UTF16PtrFromString"
-	}
-	return syscalldot() + "BytePtrFromString"
-}
-
-// StrconvType returns Go type name used for OS string for f.
-func (f *Fn) StrconvType() string {
-	if f.IsUTF16() {
-		return "*uint16"
-	}
-	return "*byte"
-}
-
-// HasStringParam is true, if f has at least one string parameter.
-// Otherwise it is false.
-func (f *Fn) HasStringParam() bool {
-	for _, p := range f.Params {
-		if p.Type == "string" {
-			return true
-		}
-	}
-	return false
-}
-
-var uniqDllFuncName = make(map[string]bool)
-
-// IsNotDuplicate is true if f is not a duplicated function
-func (f *Fn) IsNotDuplicate() bool {
-	funcName := f.DLLFuncName()
-	if uniqDllFuncName[funcName] == false {
-		uniqDllFuncName[funcName] = true
-		return true
-	}
-	return false
-}
-
-// HelperName returns name of function f helper.
-func (f *Fn) HelperName() string {
-	if !f.HasStringParam() {
-		return f.Name
-	}
-	return "_" + f.Name
-}
-
-// Source files and functions.
-type Source struct {
-	Funcs           []*Fn
-	Files           []string
-	StdLibImports   []string
-	ExternalImports []string
-}
-
-func (src *Source) Import(pkg string) {
-	src.StdLibImports = append(src.StdLibImports, pkg)
-	sort.Strings(src.StdLibImports)
-}
-
-func (src *Source) ExternalImport(pkg string) {
-	src.ExternalImports = append(src.ExternalImports, pkg)
-	sort.Strings(src.ExternalImports)
-}
-
-// ParseFiles parses files listed in fs and extracts all syscall
-// functions listed in  sys comments. It returns source files
-// and functions collection *Source if successful.
-func ParseFiles(fs []string) (*Source, error) {
-	src := &Source{
-		Funcs: make([]*Fn, 0),
-		Files: make([]string, 0),
-		StdLibImports: []string{
-			"unsafe",
-		},
-		ExternalImports: make([]string, 0),
-	}
-	for _, file := range fs {
-		if err := src.ParseFile(file); err != nil {
-			return nil, err
-		}
-	}
-	return src, nil
-}
-
-// DLLs return dll names for a source set src.
-func (src *Source) DLLs() []string {
-	uniq := make(map[string]bool)
-	r := make([]string, 0)
-	for _, f := range src.Funcs {
-		name := f.DLLName()
-		if _, found := uniq[name]; !found {
-			uniq[name] = true
-			r = append(r, name)
-		}
-	}
-	return r
-}
-
-// ParseFile adds additional file path to a source set src.
-func (src *Source) ParseFile(path string) error {
-	file, err := os.Open(path)
-	if err != nil {
-		return err
-	}
-	defer file.Close()
-
-	s := bufio.NewScanner(file)
-	for s.Scan() {
-		t := trim(s.Text())
-		if len(t) < 7 {
-			continue
-		}
-		if !strings.HasPrefix(t, "//sys") {
-			continue
-		}
-		t = t[5:]
-		if !(t[0] == ' ' || t[0] == '\t') {
-			continue
-		}
-		f, err := newFn(t[1:])
-		if err != nil {
-			return err
-		}
-		src.Funcs = append(src.Funcs, f)
-	}
-	if err := s.Err(); err != nil {
-		return err
-	}
-	src.Files = append(src.Files, path)
-
-	// get package name
-	fset := token.NewFileSet()
-	_, err = file.Seek(0, 0)
-	if err != nil {
-		return err
-	}
-	pkg, err := parser.ParseFile(fset, "", file, parser.PackageClauseOnly)
-	if err != nil {
-		return err
-	}
-	packageName = pkg.Name.Name
-
-	return nil
-}
-
-// IsStdRepo returns true if src is part of standard library.
-func (src *Source) IsStdRepo() (bool, error) {
-	if len(src.Files) == 0 {
-		return false, errors.New("no input files provided")
-	}
-	abspath, err := filepath.Abs(src.Files[0])
-	if err != nil {
-		return false, err
-	}
-	goroot := runtime.GOROOT()
-	if runtime.GOOS == "windows" {
-		abspath = strings.ToLower(abspath)
-		goroot = strings.ToLower(goroot)
-	}
-	sep := string(os.PathSeparator)
-	if !strings.HasSuffix(goroot, sep) {
-		goroot += sep
-	}
-	return strings.HasPrefix(abspath, goroot), nil
-}
-
-// Generate output source file from a source set src.
-func (src *Source) Generate(w io.Writer) error {
-	const (
-		pkgStd         = iota // any package in std library
-		pkgXSysWindows        // x/sys/windows package
-		pkgOther
-	)
-	isStdRepo, err := src.IsStdRepo()
-	if err != nil {
-		return err
-	}
-	var pkgtype int
-	switch {
-	case isStdRepo:
-		pkgtype = pkgStd
-	case packageName == "windows":
-		// TODO: this needs better logic than just using package name
-		pkgtype = pkgXSysWindows
-	default:
-		pkgtype = pkgOther
-	}
-	if *systemDLL {
-		switch pkgtype {
-		case pkgStd:
-			src.Import("internal/syscall/windows/sysdll")
-		case pkgXSysWindows:
-		default:
-			src.ExternalImport("golang.org/x/sys/windows")
-		}
-	}
-	if *winio {
-		src.ExternalImport("github.com/Microsoft/go-winio")
-	}
-	if packageName != "syscall" {
-		src.Import("syscall")
-	}
-	funcMap := template.FuncMap{
-		"packagename": packagename,
-		"syscalldot":  syscalldot,
-		"newlazydll": func(dll string) string {
-			arg := "\"" + dll + ".dll\""
-			if !*systemDLL {
-				return syscalldot() + "NewLazyDLL(" + arg + ")"
-			}
-			if strings.HasPrefix(dll, "api_") || strings.HasPrefix(dll, "ext_") {
-				arg = strings.Replace(arg, "_", "-", -1)
-			}
-			switch pkgtype {
-			case pkgStd:
-				return syscalldot() + "NewLazyDLL(sysdll.Add(" + arg + "))"
-			case pkgXSysWindows:
-				return "NewLazySystemDLL(" + arg + ")"
-			default:
-				return "windows.NewLazySystemDLL(" + arg + ")"
-			}
-		},
-	}
-	t := template.Must(template.New("main").Funcs(funcMap).Parse(srcTemplate))
-	err = t.Execute(w, src)
-	if err != nil {
-		return errors.New("Failed to execute template: " + err.Error())
-	}
-	return nil
-}
-
-func usage() {
-	fmt.Fprintf(os.Stderr, "usage: mksyscall_windows [flags] [path ...]\n")
-	flag.PrintDefaults()
-	os.Exit(1)
-}
-
-func main() {
-	flag.Usage = usage
-	flag.Parse()
-	if len(flag.Args()) <= 0 {
-		fmt.Fprintf(os.Stderr, "no files to parse provided\n")
-		usage()
-	}
-
-	src, err := ParseFiles(flag.Args())
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	var buf bytes.Buffer
-	if err := src.Generate(&buf); err != nil {
-		log.Fatal(err)
-	}
-
-	data, err := format.Source(buf.Bytes())
-	if err != nil {
-		log.Fatal(err)
-	}
-	if *filename == "" {
-		_, err = os.Stdout.Write(data)
-	} else {
-		err = ioutil.WriteFile(*filename, data, 0644)
-	}
-	if err != nil {
-		log.Fatal(err)
-	}
-}
-
-// TODO: use println instead to print in the following template
-const srcTemplate = `
-
-{{define "main"}}// Code generated mksyscall_windows.exe DO NOT EDIT
-
-package {{packagename}}
-
-import (
-{{range .StdLibImports}}"{{.}}"
-{{end}}
-
-{{range .ExternalImports}}"{{.}}"
-{{end}}
-)
-
-var _ unsafe.Pointer
-
-// Do the interface allocations only once for common
-// Errno values.
-const (
-	errnoERROR_IO_PENDING = 997
-)
-
-var (
-	errERROR_IO_PENDING error = {{syscalldot}}Errno(errnoERROR_IO_PENDING)
-)
-
-// errnoErr returns common boxed Errno values, to prevent
-// allocations at runtime.
-func errnoErr(e {{syscalldot}}Errno) error {
-	switch e {
-	case 0:
-		return nil
-	case errnoERROR_IO_PENDING:
-		return errERROR_IO_PENDING
-	}
-	// TODO: add more here, after collecting data on the common
-	// error values see on Windows. (perhaps when running
-	// all.bat?)
-	return e
-}
-
-var (
-{{template "dlls" .}}
-{{template "funcnames" .}})
-{{range .Funcs}}{{if .HasStringParam}}{{template "helperbody" .}}{{end}}{{template "funcbody" .}}{{end}}
-{{end}}
-
-{{/* help functions */}}
-
-{{define "dlls"}}{{range .DLLs}}	mod{{.}} = {{newlazydll .}}
-{{end}}{{end}}
-
-{{define "funcnames"}}{{range .Funcs}}{{if .IsNotDuplicate}}	proc{{.DLLFuncName}} = mod{{.DLLName}}.NewProc("{{.DLLFuncName}}"){{end}}
-{{end}}{{end}}
-
-{{define "helperbody"}}
-func {{.Name}}({{.ParamList}}) {{template "results" .}}{
-{{template "helpertmpvars" .}}	return {{.HelperName}}({{.HelperCallParamList}})
-}
-{{end}}
-
-{{define "funcbody"}}
-func {{.HelperName}}({{.HelperParamList}}) {{template "results" .}}{
-{{template "tmpvars" .}}	{{template "syscallcheck" .}}{{template "syscall" .}}
-{{template "seterror" .}}{{template "printtrace" .}}	return
-}
-{{end}}
-
-{{define "helpertmpvars"}}{{range .Params}}{{if .TmpVarHelperCode}}	{{.TmpVarHelperCode}}
-{{end}}{{end}}{{end}}
-
-{{define "tmpvars"}}{{range .Params}}{{if .TmpVarCode}}	{{.TmpVarCode}}
-{{end}}{{end}}{{end}}
-
-{{define "results"}}{{if .Rets.List}}{{.Rets.List}} {{end}}{{end}}
-
-{{define "syscall"}}{{.Rets.SetReturnValuesCode}}{{.Syscall}}(proc{{.DLLFuncName}}.Addr(), {{.ParamCount}}, {{.SyscallParamList}}){{end}}
-
-{{define "syscallcheck"}}{{if .ConfirmProc}}if {{.Rets.ErrorVarName}} = proc{{.DLLFuncName}}.Find(); {{.Rets.ErrorVarName}} != nil {
-    return
-}
-{{end}}{{end}}
-
-
-{{define "seterror"}}{{if .Rets.SetErrorCode}}	{{.Rets.SetErrorCode}}
-{{end}}{{end}}
-
-{{define "printtrace"}}{{if .PrintTrace}}	print("SYSCALL: {{.Name}}(", {{.ParamPrintList}}") (", {{.Rets.PrintList}}")\n")
-{{end}}{{end}}
-
-`

vendor/github.com/Microsoft/hcsshim/pkg/go-runhcs/NOTICE

@@ -1,22 +0,0 @@
-go-runhcs is a fork of go-runc
-
-The following is runc's legal notice.
-
----
-
-runc
-
-Copyright 2012-2015 Docker, Inc.
-
-This product includes software developed at Docker, Inc. (http://www.docker.com).
-
-The following is courtesy of our legal counsel:
-
-Use and transfer of Docker may be subject to certain restrictions by the
-United States and other governments.
-It is your responsibility to ensure that your use and/or transfer does not
-violate applicable laws.
-
-For more information, please see http://www.bis.doc.gov
-
-See also http://www.apache.org/dev/crypto.html and/or seek legal counsel.

vendor/github.com/alexellis/go-execute/pkg/v1/exec.go

@@ -71,10 +71,20 @@ func (et ExecTask) Execute() (ExecResult, error) {
 	cmd.Dir = et.Cwd
 
 	if len(et.Env) > 0 {
-		cmd.Env = os.Environ()
+		overrides := map[string]bool{}
 		for _, env := range et.Env {
+			key := strings.Split(env, "=")[0]
+			overrides[key] = true
 			cmd.Env = append(cmd.Env, env)
 		}
+
+		for _, env := range os.Environ() {
+			key := strings.Split(env, "=")[0]
+
+			if _, ok := overrides[key]; !ok {
+				cmd.Env = append(cmd.Env, env)
+			}
+		}
 	}
 
 	stdoutBuff := bytes.Buffer{}

vendor/github.com/alexellis/k3sup/pkg/env/env.go

@@ -2,6 +2,8 @@ package env
 
 import (
 	"log"
+	"os"
+	"path"
 	"strings"
 
 	execute "github.com/alexellis/go-execute/pkg/v1"
@@ -9,7 +11,12 @@ import (
 
 // GetClientArch returns a pair of arch and os
 func GetClientArch() (string, string) {
-	task := execute.ExecTask{Command: "uname", Args: []string{"-m"}}
+	task := execute.ExecTask{
+		Command:     "uname",
+		Args:        []string{"-m"},
+		StreamStdio: false,
+	}
+
 	res, err := task.Execute()
 	if err != nil {
 		log.Println(err)
@@ -17,7 +24,12 @@ func GetClientArch() (string, string) {
 
 	arch := strings.TrimSpace(res.Stdout)
 
-	taskOS := execute.ExecTask{Command: "uname", Args: []string{"-s"}}
+	taskOS := execute.ExecTask{
+		Command:     "uname",
+		Args:        []string{"-s"},
+		StreamStdio: false,
+	}
+
 	resOS, errOS := taskOS.Execute()
 	if errOS != nil {
 		log.Println(errOS)
@@ -27,3 +39,13 @@ func GetClientArch() (string, string) {
 
 	return arch, os
 }
+
+func LocalBinary(name, subdir string) string {
+	home := os.Getenv("HOME")
+	val := path.Join(home, ".k3sup/bin/")
+	if len(subdir) > 0 {
+		val = path.Join(val, subdir)
+	}
+
+	return path.Join(val, name)
+}

vendor/github.com/compose-spec/compose-go/LICENSE

@@ -1,7 +1,7 @@
 
                                  Apache License
                            Version 2.0, January 2004
-                        http://www.apache.org/licenses/
+                        https://www.apache.org/licenses/
 
    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
 
@@ -176,13 +176,13 @@
 
    END OF TERMS AND CONDITIONS
 
-   Copyright 2014-2018 Docker, Inc.
+   Copyright 2013-2017 Docker, Inc.
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at
 
-       http://www.apache.org/licenses/LICENSE-2.0
+       https://www.apache.org/licenses/LICENSE-2.0
 
    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,

vendor/github.com/compose-spec/compose-go/envfile/envfile.go

@@ -0,0 +1,104 @@
+/*
+   Copyright 2020 The Compose Specification Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package envfile
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"os"
+	"strings"
+	"unicode"
+	"unicode/utf8"
+
+	"github.com/compose-spec/compose-go/types"
+)
+
+const whiteSpaces = " \t"
+
+// ErrBadKey typed error for bad environment variable
+type ErrBadKey struct {
+	msg string
+}
+
+func (e ErrBadKey) Error() string {
+	return fmt.Sprintf("poorly formatted environment: %s", e.msg)
+}
+
+// Parse reads a file with environment variables enumerated by lines
+//
+// ``Environment variable names used by the utilities in the Shell and
+// Utilities volume of IEEE Std 1003.1-2001 consist solely of uppercase
+// letters, digits, and the '_' (underscore) from the characters defined in
+// Portable Character Set and do not begin with a digit. *But*, other
+// characters may be permitted by an implementation; applications shall
+// tolerate the presence of such names.''
+// -- http://pubs.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap08.html
+//
+// As of #16585, it's up to application inside docker to validate or not
+// environment variables, that's why we just strip leading whitespace and
+// nothing more.
+// Converts ["key=value"] to {"key":"value"} but set unset keys - the ones with no "=" in them - to nil
+// We use this in cases where we need to distinguish between FOO=  and FOO
+// where the latter case just means FOO was mentioned but not given a value
+func Parse(filename string) (types.MappingWithEquals, error) {
+	vars := types.MappingWithEquals{}
+	fh, err := os.Open(filename)
+	if err != nil {
+		return vars, err
+	}
+	defer fh.Close()
+
+	scanner := bufio.NewScanner(fh)
+	currentLine := 0
+	utf8bom := []byte{0xEF, 0xBB, 0xBF}
+	for scanner.Scan() {
+		scannedBytes := scanner.Bytes()
+		if !utf8.Valid(scannedBytes) {
+			return vars, fmt.Errorf("env file %s contains invalid utf8 bytes at line %d: %v", filename, currentLine+1, scannedBytes)
+		}
+		// We trim UTF8 BOM
+		if currentLine == 0 {
+			scannedBytes = bytes.TrimPrefix(scannedBytes, utf8bom)
+		}
+		// trim the line from all leading whitespace first
+		line := strings.TrimLeftFunc(string(scannedBytes), unicode.IsSpace)
+		currentLine++
+		// line is not empty, and not starting with '#'
+		if len(line) > 0 && !strings.HasPrefix(line, "#") {
+			data := strings.SplitN(line, "=", 2)
+
+			// trim the front of a variable, but nothing else
+			variable := strings.TrimLeft(data[0], whiteSpaces)
+			if strings.ContainsAny(variable, whiteSpaces) {
+				return vars, ErrBadKey{fmt.Sprintf("variable '%s' contains whitespaces", variable)}
+			}
+			if len(variable) == 0 {
+				return vars, ErrBadKey{fmt.Sprintf("no variable name on line '%s'", line)}
+			}
+
+			if len(data) > 1 {
+				// pass the value through, no trimming
+				vars[variable] = &data[1]
+			} else {
+				// variable was not given a value but declared
+				vars[strings.TrimSpace(line)] = nil
+			}
+		}
+	}
+	return vars, scanner.Err()
+}

vendor/github.com/compose-spec/compose-go/interpolation/interpolation.go

@@ -0,0 +1,177 @@
+/*
+   Copyright 2020 The Compose Specification Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package interpolation
+
+import (
+	"os"
+	"strings"
+
+	"github.com/compose-spec/compose-go/template"
+	"github.com/pkg/errors"
+)
+
+// Options supported by Interpolate
+type Options struct {
+	// LookupValue from a key
+	LookupValue LookupValue
+	// TypeCastMapping maps key paths to functions to cast to a type
+	TypeCastMapping map[Path]Cast
+	// Substitution function to use
+	Substitute func(string, template.Mapping) (string, error)
+}
+
+// LookupValue is a function which maps from variable names to values.
+// Returns the value as a string and a bool indicating whether
+// the value is present, to distinguish between an empty string
+// and the absence of a value.
+type LookupValue func(key string) (string, bool)
+
+// Cast a value to a new type, or return an error if the value can't be cast
+type Cast func(value string) (interface{}, error)
+
+// Interpolate replaces variables in a string with the values from a mapping
+func Interpolate(config map[string]interface{}, opts Options) (map[string]interface{}, error) {
+	if opts.LookupValue == nil {
+		opts.LookupValue = os.LookupEnv
+	}
+	if opts.TypeCastMapping == nil {
+		opts.TypeCastMapping = make(map[Path]Cast)
+	}
+	if opts.Substitute == nil {
+		opts.Substitute = template.Substitute
+	}
+
+	out := map[string]interface{}{}
+
+	for key, value := range config {
+		interpolatedValue, err := recursiveInterpolate(value, NewPath(key), opts)
+		if err != nil {
+			return out, err
+		}
+		out[key] = interpolatedValue
+	}
+
+	return out, nil
+}
+
+func recursiveInterpolate(value interface{}, path Path, opts Options) (interface{}, error) {
+	switch value := value.(type) {
+	case string:
+		newValue, err := opts.Substitute(value, template.Mapping(opts.LookupValue))
+		if err != nil || newValue == value {
+			return value, newPathError(path, err)
+		}
+		caster, ok := opts.getCasterForPath(path)
+		if !ok {
+			return newValue, nil
+		}
+		casted, err := caster(newValue)
+		return casted, newPathError(path, errors.Wrap(err, "failed to cast to expected type"))
+
+	case map[string]interface{}:
+		out := map[string]interface{}{}
+		for key, elem := range value {
+			interpolatedElem, err := recursiveInterpolate(elem, path.Next(key), opts)
+			if err != nil {
+				return nil, err
+			}
+			out[key] = interpolatedElem
+		}
+		return out, nil
+
+	case []interface{}:
+		out := make([]interface{}, len(value))
+		for i, elem := range value {
+			interpolatedElem, err := recursiveInterpolate(elem, path.Next(PathMatchList), opts)
+			if err != nil {
+				return nil, err
+			}
+			out[i] = interpolatedElem
+		}
+		return out, nil
+
+	default:
+		return value, nil
+	}
+}
+
+func newPathError(path Path, err error) error {
+	switch err := err.(type) {
+	case nil:
+		return nil
+	case *template.InvalidTemplateError:
+		return errors.Errorf(
+			"invalid interpolation format for %s: %#v. You may need to escape any $ with another $.",
+			path, err.Template)
+	default:
+		return errors.Wrapf(err, "error while interpolating %s", path)
+	}
+}
+
+const pathSeparator = "."
+
+// PathMatchAll is a token used as part of a Path to match any key at that level
+// in the nested structure
+const PathMatchAll = "*"
+
+// PathMatchList is a token used as part of a Path to match items in a list
+const PathMatchList = "[]"
+
+// Path is a dotted path of keys to a value in a nested mapping structure. A *
+// section in a path will match any key in the mapping structure.
+type Path string
+
+// NewPath returns a new Path
+func NewPath(items ...string) Path {
+	return Path(strings.Join(items, pathSeparator))
+}
+
+// Next returns a new path by append part to the current path
+func (p Path) Next(part string) Path {
+	return Path(string(p) + pathSeparator + part)
+}
+
+func (p Path) parts() []string {
+	return strings.Split(string(p), pathSeparator)
+}
+
+func (p Path) matches(pattern Path) bool {
+	patternParts := pattern.parts()
+	parts := p.parts()
+
+	if len(patternParts) != len(parts) {
+		return false
+	}
+	for index, part := range parts {
+		switch patternParts[index] {
+		case PathMatchAll, part:
+			continue
+		default:
+			return false
+		}
+	}
+	return true
+}
+
+func (o Options) getCasterForPath(path Path) (Cast, bool) {
+	for pattern, caster := range o.TypeCastMapping {
+		if path.matches(pattern) {
+			return caster, true
+		}
+	}
+	return nil, false
+}

vendor/github.com/compose-spec/compose-go/loader/example1.env

@@ -0,0 +1,8 @@
+# passed through
+FOO=foo_from_env_file
+
+# overridden in example2.env
+BAR=bar_from_env_file
+
+# overridden in full-example.yml
+BAZ=baz_from_env_file

vendor/github.com/compose-spec/compose-go/loader/example2.env

@@ -0,0 +1,4 @@
+BAR=bar_from_env_file_2
+
+# overridden in configDetails.Environment
+QUX=quz_from_env_file_2

vendor/github.com/compose-spec/compose-go/loader/full-example.yml

@@ -0,0 +1,409 @@
+version: "3.9"
+
+services:
+  foo:
+
+    build:
+      context: ./dir
+      dockerfile: Dockerfile
+      args:
+        foo: bar
+      target: foo
+      network: foo
+      cache_from:
+        - foo
+        - bar
+      labels: [FOO=BAR]
+
+
+    cap_add:
+      - ALL
+
+    cap_drop:
+      - NET_ADMIN
+      - SYS_ADMIN
+
+    cgroup_parent: m-executor-abcd
+
+    # String or list
+    command: bundle exec thin -p 3000
+    # command: ["bundle", "exec", "thin", "-p", "3000"]
+
+    configs:
+      - config1
+      - source: config2
+        target: /my_config
+        uid: '103'
+        gid: '103'
+        mode: 0440
+
+    container_name: my-web-container
+
+    depends_on:
+      - db
+      - redis
+
+    deploy:
+      mode: replicated
+      replicas: 6
+      labels: [FOO=BAR]
+      rollback_config:
+        parallelism: 3
+        delay: 10s
+        failure_action: continue
+        monitor: 60s
+        max_failure_ratio: 0.3
+        order: start-first
+      update_config:
+        parallelism: 3
+        delay: 10s
+        failure_action: continue
+        monitor: 60s
+        max_failure_ratio: 0.3
+        order: start-first
+      resources:
+        limits:
+          cpus: '0.001'
+          memory: 50M
+        reservations:
+          cpus: '0.0001'
+          memory: 20M
+          generic_resources:
+            - discrete_resource_spec:
+                kind: 'gpu'
+                value: 2
+            - discrete_resource_spec:
+                kind: 'ssd'
+                value: 1
+      restart_policy:
+        condition: on-failure
+        delay: 5s
+        max_attempts: 3
+        window: 120s
+      placement:
+        constraints: [node=foo]
+        max_replicas_per_node: 5
+        preferences:
+          - spread: node.labels.az
+      endpoint_mode: dnsrr
+
+    devices:
+      - "/dev/ttyUSB0:/dev/ttyUSB0"
+
+    # String or list
+    # dns: 8.8.8.8
+    dns:
+      - 8.8.8.8
+      - 9.9.9.9
+
+    # String or list
+    # dns_search: example.com
+    dns_search:
+      - dc1.example.com
+      - dc2.example.com
+
+    domainname: foo.com
+
+    # String or list
+    # entrypoint: /code/entrypoint.sh -p 3000
+    entrypoint: ["/code/entrypoint.sh", "-p", "3000"]
+
+    # String or list
+    # env_file: .env
+    env_file:
+      - ./example1.env
+      - ./example2.env
+
+    # Mapping or list
+    # Mapping values can be strings, numbers or null
+    # Booleans are not allowed - must be quoted
+    environment:
+      BAZ: baz_from_service_def
+      QUX:
+    # environment:
+    #   - RACK_ENV=development
+    #   - SHOW=true
+    #   - SESSION_SECRET
+
+    # Items can be strings or numbers
+    expose:
+     - "3000"
+     - 8000
+
+    external_links:
+      - redis_1
+      - project_db_1:mysql
+      - project_db_1:postgresql
+
+    # Mapping or list
+    # Mapping values must be strings
+    # extra_hosts:
+    #   somehost: "162.242.195.82"
+    #   otherhost: "50.31.209.229"
+    extra_hosts:
+      - "somehost:162.242.195.82"
+      - "otherhost:50.31.209.229"
+
+    hostname: foo
+
+    healthcheck:
+      test: echo "hello world"
+      interval: 10s
+      timeout: 1s
+      retries: 5
+      start_period: 15s
+
+    # Any valid image reference - repo, tag, id, sha
+    image: redis
+    # image: ubuntu:14.04
+    # image: tutum/influxdb
+    # image: example-registry.com:4000/postgresql
+    # image: a4bc65fd
+    # image: busybox@sha256:38a203e1986cf79639cfb9b2e1d6e773de84002feea2d4eb006b52004ee8502d
+
+    ipc: host
+
+    # Mapping or list
+    # Mapping values can be strings, numbers or null
+    labels:
+      com.example.description: "Accounting webapp"
+      com.example.number: 42
+      com.example.empty-label:
+    # labels:
+    #   - "com.example.description=Accounting webapp"
+    #   - "com.example.number=42"
+    #   - "com.example.empty-label"
+
+    links:
+     - db
+     - db:database
+     - redis
+
+    logging:
+      driver: syslog
+      options:
+        syslog-address: "tcp://192.168.0.42:123"
+
+    mac_address: 02:42:ac:11:65:43
+
+    # network_mode: "bridge"
+    # network_mode: "host"
+    # network_mode: "none"
+    # Use the network mode of an arbitrary container from another service
+    # network_mode: "service:db"
+    # Use the network mode of another container, specified by name or id
+    # network_mode: "container:some-container"
+    network_mode: "container:0cfeab0f748b9a743dc3da582046357c6ef497631c1a016d28d2bf9b4f899f7b"
+
+    networks:
+      some-network:
+        aliases:
+         - alias1
+         - alias3
+      other-network:
+        ipv4_address: 172.16.238.10
+        ipv6_address: 2001:3984:3989::10
+      other-other-network:
+
+    pid: "host"
+
+    ports:
+      - 3000
+      - "3001-3005"
+      - "8000:8000"
+      - "9090-9091:8080-8081"
+      - "49100:22"
+      - "127.0.0.1:8001:8001"
+      - "127.0.0.1:5000-5010:5000-5010"
+
+    privileged: true
+
+    read_only: true
+
+    restart: always
+
+    secrets:
+      - secret1
+      - source: secret2
+        target: my_secret
+        uid: '103'
+        gid: '103'
+        mode: 0440
+
+    security_opt:
+      - label=level:s0:c100,c200
+      - label=type:svirt_apache_t
+
+    stdin_open: true
+
+    stop_grace_period: 20s
+
+    stop_signal: SIGUSR1
+
+    sysctls:
+      net.core.somaxconn: 1024
+      net.ipv4.tcp_syncookies: 0
+
+    # String or list
+    # tmpfs: /run
+    tmpfs:
+      - /run
+      - /tmp
+
+    tty: true
+
+    ulimits:
+      # Single number or mapping with soft + hard limits
+      nproc: 65535
+      nofile:
+        soft: 20000
+        hard: 40000
+
+    user: someone
+
+    volumes:
+      # Just specify a path and let the Engine create a volume
+      - /var/lib/mysql
+      # Specify an absolute path mapping
+      - /opt/data:/var/lib/mysql
+      # Path on the host, relative to the Compose file
+      - .:/code
+      - ./static:/var/www/html
+      # User-relative path
+      - ~/configs:/etc/configs/:ro
+      # Named volume
+      - datavolume:/var/lib/mysql
+      - type: bind
+        source: ./opt
+        target: /opt
+        consistency: cached
+      - type: tmpfs
+        target: /opt
+        tmpfs:
+          size: 10000
+
+    working_dir: /code
+    x-bar: baz
+    x-foo: bar
+
+networks:
+  # Entries can be null, which specifies simply that a network
+  # called "{project name}_some-network" should be created and
+  # use the default driver
+  some-network:
+
+  other-network:
+    driver: overlay
+
+    driver_opts:
+      # Values can be strings or numbers
+      foo: "bar"
+      baz: 1
+
+    ipam:
+      driver: overlay
+      # driver_opts:
+      #   # Values can be strings or numbers
+      #   com.docker.network.enable_ipv6: "true"
+      #   com.docker.network.numeric_value: 1
+      config:
+      - subnet: 172.16.238.0/24
+        # gateway: 172.16.238.1
+      - subnet: 2001:3984:3989::/64
+        # gateway: 2001:3984:3989::1
+
+    labels:
+      foo: bar
+
+  external-network:
+    # Specifies that a pre-existing network called "external-network"
+    # can be referred to within this file as "external-network"
+    external: true
+
+  other-external-network:
+    # Specifies that a pre-existing network called "my-cool-network"
+    # can be referred to within this file as "other-external-network"
+    external:
+      name: my-cool-network
+    x-bar: baz
+    x-foo: bar
+
+volumes:
+  # Entries can be null, which specifies simply that a volume
+  # called "{project name}_some-volume" should be created and
+  # use the default driver
+  some-volume:
+
+  other-volume:
+    driver: flocker
+
+    driver_opts:
+      # Values can be strings or numbers
+      foo: "bar"
+      baz: 1
+    labels:
+      foo: bar
+
+  another-volume:
+    name: "user_specified_name"
+    driver: vsphere
+
+    driver_opts:
+      # Values can be strings or numbers
+      foo: "bar"
+      baz: 1
+
+  external-volume:
+    # Specifies that a pre-existing volume called "external-volume"
+    # can be referred to within this file as "external-volume"
+    external: true
+
+  other-external-volume:
+    # Specifies that a pre-existing volume called "my-cool-volume"
+    # can be referred to within this file as "other-external-volume"
+    # This example uses the deprecated "volume.external.name" (replaced by "volume.name")
+    external:
+      name: my-cool-volume
+
+  external-volume3:
+    # Specifies that a pre-existing volume called "this-is-volume3"
+    # can be referred to within this file as "external-volume3"
+    name: this-is-volume3
+    external: true
+    x-bar: baz
+    x-foo: bar
+
+configs:
+  config1:
+    file: ./config_data
+    labels:
+      foo: bar
+  config2:
+    external:
+      name: my_config
+  config3:
+    external: true
+  config4:
+    name: foo
+    x-bar: baz
+    x-foo: bar
+
+secrets:
+  secret1:
+    file: ./secret_data
+    labels:
+      foo: bar
+  secret2:
+    external:
+      name: my_secret
+  secret3:
+    external: true
+  secret4:
+    name: bar
+    x-bar: baz
+    x-foo: bar
+x-bar: baz
+x-foo: bar
+x-nested:
+  bar: baz
+  foo: bar

vendor/github.com/compose-spec/compose-go/loader/interpolate.go

@@ -0,0 +1,88 @@
+/*
+   Copyright 2020 The Compose Specification Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package loader
+
+import (
+	"strconv"
+	"strings"
+
+	interp "github.com/compose-spec/compose-go/interpolation"
+	"github.com/pkg/errors"
+)
+
+var interpolateTypeCastMapping = map[interp.Path]interp.Cast{
+	servicePath("configs", interp.PathMatchList, "mode"):             toInt,
+	servicePath("secrets", interp.PathMatchList, "mode"):             toInt,
+	servicePath("healthcheck", "retries"):                            toInt,
+	servicePath("healthcheck", "disable"):                            toBoolean,
+	servicePath("deploy", "replicas"):                                toInt,
+	servicePath("deploy", "update_config", "parallelism"):            toInt,
+	servicePath("deploy", "update_config", "max_failure_ratio"):      toFloat,
+	servicePath("deploy", "rollback_config", "parallelism"):          toInt,
+	servicePath("deploy", "rollback_config", "max_failure_ratio"):    toFloat,
+	servicePath("deploy", "restart_policy", "max_attempts"):          toInt,
+	servicePath("deploy", "placement", "max_replicas_per_node"):      toInt,
+	servicePath("ports", interp.PathMatchList, "target"):             toInt,
+	servicePath("ports", interp.PathMatchList, "published"):          toInt,
+	servicePath("ulimits", interp.PathMatchAll):                      toInt,
+	servicePath("ulimits", interp.PathMatchAll, "hard"):              toInt,
+	servicePath("ulimits", interp.PathMatchAll, "soft"):              toInt,
+	servicePath("privileged"):                                        toBoolean,
+	servicePath("read_only"):                                         toBoolean,
+	servicePath("stdin_open"):                                        toBoolean,
+	servicePath("tty"):                                               toBoolean,
+	servicePath("volumes", interp.PathMatchList, "read_only"):        toBoolean,
+	servicePath("volumes", interp.PathMatchList, "volume", "nocopy"): toBoolean,
+	iPath("networks", interp.PathMatchAll, "external"):               toBoolean,
+	iPath("networks", interp.PathMatchAll, "internal"):               toBoolean,
+	iPath("networks", interp.PathMatchAll, "attachable"):             toBoolean,
+	iPath("volumes", interp.PathMatchAll, "external"):                toBoolean,
+	iPath("secrets", interp.PathMatchAll, "external"):                toBoolean,
+	iPath("configs", interp.PathMatchAll, "external"):                toBoolean,
+}
+
+func iPath(parts ...string) interp.Path {
+	return interp.NewPath(parts...)
+}
+
+func servicePath(parts ...string) interp.Path {
+	return iPath(append([]string{"services", interp.PathMatchAll}, parts...)...)
+}
+
+func toInt(value string) (interface{}, error) {
+	return strconv.Atoi(value)
+}
+
+func toFloat(value string) (interface{}, error) {
+	return strconv.ParseFloat(value, 64)
+}
+
+// should match http://yaml.org/type/bool.html
+func toBoolean(value string) (interface{}, error) {
+	switch strings.ToLower(value) {
+	case "y", "yes", "true", "on":
+		return true, nil
+	case "n", "no", "false", "off":
+		return false, nil
+	default:
+		return nil, errors.Errorf("invalid boolean: %s", value)
+	}
+}
+
+func interpolateConfig(configDict map[string]interface{}, opts interp.Options) (map[string]interface{}, error) {
+	return interp.Interpolate(configDict, opts)
+}

vendor/github.com/compose-spec/compose-go/loader/loader.go

@@ -0,0 +1,876 @@
+/*
+   Copyright 2020 The Compose Specification Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package loader
+
+import (
+	"fmt"
+	"os"
+	"path"
+	"path/filepath"
+	"reflect"
+	"sort"
+	"strings"
+	"time"
+
+	"github.com/compose-spec/compose-go/envfile"
+	interp "github.com/compose-spec/compose-go/interpolation"
+	"github.com/compose-spec/compose-go/schema"
+	"github.com/compose-spec/compose-go/template"
+	"github.com/compose-spec/compose-go/types"
+	units "github.com/docker/go-units"
+	shellwords "github.com/mattn/go-shellwords"
+	"github.com/mitchellh/mapstructure"
+	"github.com/pkg/errors"
+	"github.com/sirupsen/logrus"
+	yaml "gopkg.in/yaml.v2"
+)
+
+// Options supported by Load
+type Options struct {
+	// Skip schema validation
+	SkipValidation bool
+	// Skip interpolation
+	SkipInterpolation bool
+	// Interpolation options
+	Interpolate *interp.Options
+	// Discard 'env_file' entries after resolving to 'environment' section
+	discardEnvFiles bool
+}
+
+// WithDiscardEnvFiles sets the Options to discard the `env_file` section after resolving to
+// the `environment` section
+func WithDiscardEnvFiles(opts *Options) {
+	opts.discardEnvFiles = true
+}
+
+// ParseYAML reads the bytes from a file, parses the bytes into a mapping
+// structure, and returns it.
+func ParseYAML(source []byte) (map[string]interface{}, error) {
+	var cfg interface{}
+	if err := yaml.Unmarshal(source, &cfg); err != nil {
+		return nil, err
+	}
+	cfgMap, ok := cfg.(map[interface{}]interface{})
+	if !ok {
+		return nil, errors.Errorf("Top-level object must be a mapping")
+	}
+	converted, err := convertToStringKeysRecursive(cfgMap, "")
+	if err != nil {
+		return nil, err
+	}
+	return converted.(map[string]interface{}), nil
+}
+
+// Load reads a ConfigDetails and returns a fully loaded configuration
+func Load(configDetails types.ConfigDetails, options ...func(*Options)) (*types.Config, error) {
+	if len(configDetails.ConfigFiles) < 1 {
+		return nil, errors.Errorf("No files specified")
+	}
+
+	opts := &Options{
+		Interpolate: &interp.Options{
+			Substitute:      template.Substitute,
+			LookupValue:     configDetails.LookupEnv,
+			TypeCastMapping: interpolateTypeCastMapping,
+		},
+	}
+
+	for _, op := range options {
+		op(opts)
+	}
+
+	configs := []*types.Config{}
+	var err error
+
+	for _, file := range configDetails.ConfigFiles {
+		configDict := file.Config
+		version := schema.Version(configDict)
+		if configDetails.Version == "" {
+			configDetails.Version = version
+		}
+		if configDetails.Version != version {
+			return nil, errors.Errorf("version mismatched between two composefiles : %v and %v", configDetails.Version, version)
+		}
+
+		if !opts.SkipInterpolation {
+			configDict, err = interpolateConfig(configDict, *opts.Interpolate)
+			if err != nil {
+				return nil, err
+			}
+		}
+
+		if !opts.SkipValidation {
+			if err := schema.Validate(configDict, configDetails.Version); err != nil {
+				return nil, err
+			}
+		}
+
+		configDict = groupXFieldsIntoExtensions(configDict)
+
+		cfg, err := loadSections(configDict, configDetails)
+		if err != nil {
+			return nil, err
+		}
+		cfg.Filename = file.Filename
+		if opts.discardEnvFiles {
+			for i := range cfg.Services {
+				cfg.Services[i].EnvFile = nil
+			}
+		}
+
+		configs = append(configs, cfg)
+	}
+
+	return merge(configs)
+}
+
+func groupXFieldsIntoExtensions(dict map[string]interface{}) map[string]interface{} {
+	extras := map[string]interface{}{}
+	for key, value := range dict {
+		if strings.HasPrefix(key, "x-") {
+			extras[key] = value
+			delete(dict, key)
+		}
+		if d, ok := value.(map[string]interface{}); ok {
+			dict[key] = groupXFieldsIntoExtensions(d)
+		}
+	}
+	if len(extras) > 0 {
+		dict["extensions"] = extras
+	}
+	return dict
+}
+
+func loadSections(config map[string]interface{}, configDetails types.ConfigDetails) (*types.Config, error) {
+	var err error
+	cfg := types.Config{
+		Version: schema.Version(config),
+	}
+
+	var loaders = []struct {
+		key string
+		fnc func(config map[string]interface{}) error
+	}{
+		{
+			key: "services",
+			fnc: func(config map[string]interface{}) error {
+				cfg.Services, err = LoadServices(config, configDetails.WorkingDir, configDetails.LookupEnv)
+				return err
+			},
+		},
+		{
+			key: "networks",
+			fnc: func(config map[string]interface{}) error {
+				cfg.Networks, err = LoadNetworks(config, configDetails.Version)
+				return err
+			},
+		},
+		{
+			key: "volumes",
+			fnc: func(config map[string]interface{}) error {
+				cfg.Volumes, err = LoadVolumes(config)
+				return err
+			},
+		},
+		{
+			key: "secrets",
+			fnc: func(config map[string]interface{}) error {
+				cfg.Secrets, err = LoadSecrets(config, configDetails)
+				return err
+			},
+		},
+		{
+			key: "configs",
+			fnc: func(config map[string]interface{}) error {
+				cfg.Configs, err = LoadConfigObjs(config, configDetails)
+				return err
+			},
+		},
+		{
+			key: "extensions",
+			fnc: func(config map[string]interface{}) error {
+				if len(config) > 0 {
+					cfg.Extensions = config
+				}
+				return err
+			},
+		},
+	}
+	for _, loader := range loaders {
+		if err := loader.fnc(getSection(config, loader.key)); err != nil {
+			return nil, err
+		}
+	}
+	return &cfg, nil
+}
+
+func getSection(config map[string]interface{}, key string) map[string]interface{} {
+	section, ok := config[key]
+	if !ok {
+		return make(map[string]interface{})
+	}
+	return section.(map[string]interface{})
+}
+
+func sortedKeys(set map[string]bool) []string {
+	var keys []string
+	for key := range set {
+		keys = append(keys, key)
+	}
+	sort.Strings(keys)
+	return keys
+}
+
+func getProperties(services map[string]interface{}, propertyMap map[string]string) map[string]string {
+	output := map[string]string{}
+
+	for _, service := range services {
+		if serviceDict, ok := service.(map[string]interface{}); ok {
+			for property, description := range propertyMap {
+				if _, isSet := serviceDict[property]; isSet {
+					output[property] = description
+				}
+			}
+		}
+	}
+
+	return output
+}
+
+// ForbiddenPropertiesError is returned when there are properties in the Compose
+// file that are forbidden.
+type ForbiddenPropertiesError struct {
+	Properties map[string]string
+}
+
+func (e *ForbiddenPropertiesError) Error() string {
+	return "Configuration contains forbidden properties"
+}
+
+func getServices(configDict map[string]interface{}) map[string]interface{} {
+	if services, ok := configDict["services"]; ok {
+		if servicesDict, ok := services.(map[string]interface{}); ok {
+			return servicesDict
+		}
+	}
+
+	return map[string]interface{}{}
+}
+
+// Transform converts the source into the target struct with compose types transformer
+// and the specified transformers if any.
+func Transform(source interface{}, target interface{}, additionalTransformers ...Transformer) error {
+	data := mapstructure.Metadata{}
+	config := &mapstructure.DecoderConfig{
+		DecodeHook: mapstructure.ComposeDecodeHookFunc(
+			createTransformHook(additionalTransformers...),
+			mapstructure.StringToTimeDurationHookFunc()),
+		Result:   target,
+		Metadata: &data,
+	}
+	decoder, err := mapstructure.NewDecoder(config)
+	if err != nil {
+		return err
+	}
+	return decoder.Decode(source)
+}
+
+// TransformerFunc defines a function to perform the actual transformation
+type TransformerFunc func(interface{}) (interface{}, error)
+
+// Transformer defines a map to type transformer
+type Transformer struct {
+	TypeOf reflect.Type
+	Func   TransformerFunc
+}
+
+func createTransformHook(additionalTransformers ...Transformer) mapstructure.DecodeHookFuncType {
+	transforms := map[reflect.Type]func(interface{}) (interface{}, error){
+		reflect.TypeOf(types.External{}):                         transformExternal,
+		reflect.TypeOf(types.HealthCheckTest{}):                  transformHealthCheckTest,
+		reflect.TypeOf(types.ShellCommand{}):                     transformShellCommand,
+		reflect.TypeOf(types.StringList{}):                       transformStringList,
+		reflect.TypeOf(map[string]string{}):                      transformMapStringString,
+		reflect.TypeOf(types.UlimitsConfig{}):                    transformUlimits,
+		reflect.TypeOf(types.UnitBytes(0)):                       transformSize,
+		reflect.TypeOf([]types.ServicePortConfig{}):              transformServicePort,
+		reflect.TypeOf(types.ServiceSecretConfig{}):              transformStringSourceMap,
+		reflect.TypeOf(types.ServiceConfigObjConfig{}):           transformStringSourceMap,
+		reflect.TypeOf(types.StringOrNumberList{}):               transformStringOrNumberList,
+		reflect.TypeOf(map[string]*types.ServiceNetworkConfig{}): transformServiceNetworkMap,
+		reflect.TypeOf(types.Mapping{}):                          transformMappingOrListFunc("=", false),
+		reflect.TypeOf(types.MappingWithEquals{}):                transformMappingOrListFunc("=", true),
+		reflect.TypeOf(types.Labels{}):                           transformMappingOrListFunc("=", false),
+		reflect.TypeOf(types.MappingWithColon{}):                 transformMappingOrListFunc(":", false),
+		reflect.TypeOf(types.HostsList{}):                        transformListOrMappingFunc(":", false),
+		reflect.TypeOf(types.ServiceVolumeConfig{}):              transformServiceVolumeConfig,
+		reflect.TypeOf(types.BuildConfig{}):                      transformBuildConfig,
+		reflect.TypeOf(types.Duration(0)):                        transformStringToDuration,
+	}
+
+	for _, transformer := range additionalTransformers {
+		transforms[transformer.TypeOf] = transformer.Func
+	}
+
+	return func(_ reflect.Type, target reflect.Type, data interface{}) (interface{}, error) {
+		transform, ok := transforms[target]
+		if !ok {
+			return data, nil
+		}
+		return transform(data)
+	}
+}
+
+// keys needs to be converted to strings for jsonschema
+func convertToStringKeysRecursive(value interface{}, keyPrefix string) (interface{}, error) {
+	if mapping, ok := value.(map[interface{}]interface{}); ok {
+		dict := make(map[string]interface{})
+		for key, entry := range mapping {
+			str, ok := key.(string)
+			if !ok {
+				return nil, formatInvalidKeyError(keyPrefix, key)
+			}
+			var newKeyPrefix string
+			if keyPrefix == "" {
+				newKeyPrefix = str
+			} else {
+				newKeyPrefix = fmt.Sprintf("%s.%s", keyPrefix, str)
+			}
+			convertedEntry, err := convertToStringKeysRecursive(entry, newKeyPrefix)
+			if err != nil {
+				return nil, err
+			}
+			dict[str] = convertedEntry
+		}
+		return dict, nil
+	}
+	if list, ok := value.([]interface{}); ok {
+		var convertedList []interface{}
+		for index, entry := range list {
+			newKeyPrefix := fmt.Sprintf("%s[%d]", keyPrefix, index)
+			convertedEntry, err := convertToStringKeysRecursive(entry, newKeyPrefix)
+			if err != nil {
+				return nil, err
+			}
+			convertedList = append(convertedList, convertedEntry)
+		}
+		return convertedList, nil
+	}
+	return value, nil
+}
+
+func formatInvalidKeyError(keyPrefix string, key interface{}) error {
+	var location string
+	if keyPrefix == "" {
+		location = "at top level"
+	} else {
+		location = fmt.Sprintf("in %s", keyPrefix)
+	}
+	return errors.Errorf("Non-string key %s: %#v", location, key)
+}
+
+// LoadServices produces a ServiceConfig map from a compose file Dict
+// the servicesDict is not validated if directly used. Use Load() to enable validation
+func LoadServices(servicesDict map[string]interface{}, workingDir string, lookupEnv template.Mapping) ([]types.ServiceConfig, error) {
+	var services []types.ServiceConfig
+
+	for name, serviceDef := range servicesDict {
+		serviceConfig, err := LoadService(name, serviceDef.(map[string]interface{}), workingDir, lookupEnv)
+		if err != nil {
+			return nil, err
+		}
+		services = append(services, *serviceConfig)
+	}
+
+	return services, nil
+}
+
+// LoadService produces a single ServiceConfig from a compose file Dict
+// the serviceDict is not validated if directly used. Use Load() to enable validation
+func LoadService(name string, serviceDict map[string]interface{}, workingDir string, lookupEnv template.Mapping) (*types.ServiceConfig, error) {
+	serviceConfig := &types.ServiceConfig{}
+	if err := Transform(serviceDict, serviceConfig); err != nil {
+		return nil, err
+	}
+	serviceConfig.Name = name
+
+	if err := resolveEnvironment(serviceConfig, workingDir, lookupEnv); err != nil {
+		return nil, err
+	}
+
+	if err := resolveVolumePaths(serviceConfig.Volumes, workingDir, lookupEnv); err != nil {
+		return nil, err
+	}
+
+	return serviceConfig, nil
+}
+
+func resolveEnvironment(serviceConfig *types.ServiceConfig, workingDir string, lookupEnv template.Mapping) error {
+	environment := types.MappingWithEquals{}
+
+	if len(serviceConfig.EnvFile) > 0 {
+		for _, file := range serviceConfig.EnvFile {
+			filePath := absPath(workingDir, file)
+			fileVars, err := envfile.Parse(filePath)
+			if err != nil {
+				return err
+			}
+			environment.OverrideBy(fileVars.Resolve(lookupEnv).RemoveEmpty())
+		}
+	}
+
+	environment.OverrideBy(serviceConfig.Environment.Resolve(lookupEnv))
+	serviceConfig.Environment = environment
+	return nil
+}
+
+func resolveVolumePaths(volumes []types.ServiceVolumeConfig, workingDir string, lookupEnv template.Mapping) error {
+	for i, volume := range volumes {
+		if volume.Type != "bind" {
+			continue
+		}
+
+		if volume.Source == "" {
+			return errors.New(`invalid mount config for type "bind": field Source must not be empty`)
+		}
+
+		filePath := expandUser(volume.Source, lookupEnv)
+		// Check if source is an absolute path (either Unix or Windows), to
+		// handle a Windows client with a Unix daemon or vice-versa.
+		//
+		// Note that this is not required for Docker for Windows when specifying
+		// a local Windows path, because Docker for Windows translates the Windows
+		// path into a valid path within the VM.
+		if !path.IsAbs(filePath) && !isAbs(filePath) {
+			filePath = absPath(workingDir, filePath)
+		}
+		volume.Source = filePath
+		volumes[i] = volume
+	}
+	return nil
+}
+
+// TODO: make this more robust
+func expandUser(path string, lookupEnv template.Mapping) string {
+	if strings.HasPrefix(path, "~") {
+		home, err := os.UserHomeDir()
+		if err != nil {
+			logrus.Warn("cannot expand '~', because the environment lacks HOME")
+			return path
+		}
+		return filepath.Join(home, path[1:])
+	}
+	return path
+}
+
+func transformUlimits(data interface{}) (interface{}, error) {
+	switch value := data.(type) {
+	case int:
+		return types.UlimitsConfig{Single: value}, nil
+	case map[string]interface{}:
+		ulimit := types.UlimitsConfig{}
+		if v, ok := value["soft"]; ok {
+			ulimit.Soft = v.(int)
+		}
+		if v, ok := value["hard"]; ok {
+			ulimit.Hard = v.(int)
+		}
+		return ulimit, nil
+	default:
+		return data, errors.Errorf("invalid type %T for ulimits", value)
+	}
+}
+
+// LoadNetworks produces a NetworkConfig map from a compose file Dict
+// the source Dict is not validated if directly used. Use Load() to enable validation
+func LoadNetworks(source map[string]interface{}, version string) (map[string]types.NetworkConfig, error) {
+	networks := make(map[string]types.NetworkConfig)
+	err := Transform(source, &networks)
+	if err != nil {
+		return networks, err
+	}
+	for name, network := range networks {
+		if !network.External.External {
+			continue
+		}
+		switch {
+		case network.External.Name != "":
+			if network.Name != "" {
+				return nil, errors.Errorf("network %s: network.external.name and network.name conflict; only use network.name", name)
+			}
+			logrus.Warnf("network %s: network.external.name is deprecated in favor of network.name", name)
+			network.Name = network.External.Name
+			network.External.Name = ""
+		case network.Name == "":
+			network.Name = name
+		}
+		networks[name] = network
+	}
+	return networks, nil
+}
+
+func externalVolumeError(volume, key string) error {
+	return errors.Errorf(
+		"conflicting parameters \"external\" and %q specified for volume %q",
+		key, volume)
+}
+
+// LoadVolumes produces a VolumeConfig map from a compose file Dict
+// the source Dict is not validated if directly used. Use Load() to enable validation
+func LoadVolumes(source map[string]interface{}) (map[string]types.VolumeConfig, error) {
+	volumes := make(map[string]types.VolumeConfig)
+	if err := Transform(source, &volumes); err != nil {
+		return volumes, err
+	}
+
+	for name, volume := range volumes {
+		if !volume.External.External {
+			continue
+		}
+		switch {
+		case volume.Driver != "":
+			return nil, externalVolumeError(name, "driver")
+		case len(volume.DriverOpts) > 0:
+			return nil, externalVolumeError(name, "driver_opts")
+		case len(volume.Labels) > 0:
+			return nil, externalVolumeError(name, "labels")
+		case volume.External.Name != "":
+			if volume.Name != "" {
+				return nil, errors.Errorf("volume %s: volume.external.name and volume.name conflict; only use volume.name", name)
+			}
+			logrus.Warnf("volume %s: volume.external.name is deprecated in favor of volume.name", name)
+			volume.Name = volume.External.Name
+			volume.External.Name = ""
+		case volume.Name == "":
+			volume.Name = name
+		}
+		volumes[name] = volume
+	}
+	return volumes, nil
+}
+
+// LoadSecrets produces a SecretConfig map from a compose file Dict
+// the source Dict is not validated if directly used. Use Load() to enable validation
+func LoadSecrets(source map[string]interface{}, details types.ConfigDetails) (map[string]types.SecretConfig, error) {
+	secrets := make(map[string]types.SecretConfig)
+	if err := Transform(source, &secrets); err != nil {
+		return secrets, err
+	}
+	for name, secret := range secrets {
+		obj, err := loadFileObjectConfig(name, "secret", types.FileObjectConfig(secret), details)
+		if err != nil {
+			return nil, err
+		}
+		secretConfig := types.SecretConfig(obj)
+		secrets[name] = secretConfig
+	}
+	return secrets, nil
+}
+
+// LoadConfigObjs produces a ConfigObjConfig map from a compose file Dict
+// the source Dict is not validated if directly used. Use Load() to enable validation
+func LoadConfigObjs(source map[string]interface{}, details types.ConfigDetails) (map[string]types.ConfigObjConfig, error) {
+	configs := make(map[string]types.ConfigObjConfig)
+	if err := Transform(source, &configs); err != nil {
+		return configs, err
+	}
+	for name, config := range configs {
+		obj, err := loadFileObjectConfig(name, "config", types.FileObjectConfig(config), details)
+		if err != nil {
+			return nil, err
+		}
+		configConfig := types.ConfigObjConfig(obj)
+		configs[name] = configConfig
+	}
+	return configs, nil
+}
+
+func loadFileObjectConfig(name string, objType string, obj types.FileObjectConfig, details types.ConfigDetails) (types.FileObjectConfig, error) {
+	// if "external: true"
+	switch {
+	case obj.External.External:
+		// handle deprecated external.name
+		if obj.External.Name != "" {
+			if obj.Name != "" {
+				return obj, errors.Errorf("%[1]s %[2]s: %[1]s.external.name and %[1]s.name conflict; only use %[1]s.name", objType, name)
+			}
+			logrus.Warnf("%[1]s %[2]s: %[1]s.external.name is deprecated in favor of %[1]s.name", objType, name)
+			obj.Name = obj.External.Name
+			obj.External.Name = ""
+		} else {
+			if obj.Name == "" {
+				obj.Name = name
+			}
+		}
+		// if not "external: true"
+	case obj.Driver != "":
+		if obj.File != "" {
+			return obj, errors.Errorf("%[1]s %[2]s: %[1]s.driver and %[1]s.file conflict; only use %[1]s.driver", objType, name)
+		}
+	default:
+		obj.File = absPath(details.WorkingDir, obj.File)
+	}
+
+	return obj, nil
+}
+
+func absPath(workingDir string, filePath string) string {
+	if filepath.IsAbs(filePath) {
+		return filePath
+	}
+	return filepath.Join(workingDir, filePath)
+}
+
+var transformMapStringString TransformerFunc = func(data interface{}) (interface{}, error) {
+	switch value := data.(type) {
+	case map[string]interface{}:
+		return toMapStringString(value, false), nil
+	case map[string]string:
+		return value, nil
+	default:
+		return data, errors.Errorf("invalid type %T for map[string]string", value)
+	}
+}
+
+var transformExternal TransformerFunc = func(data interface{}) (interface{}, error) {
+	switch value := data.(type) {
+	case bool:
+		return map[string]interface{}{"external": value}, nil
+	case map[string]interface{}:
+		return map[string]interface{}{"external": true, "name": value["name"]}, nil
+	default:
+		return data, errors.Errorf("invalid type %T for external", value)
+	}
+}
+
+var transformServicePort TransformerFunc = func(data interface{}) (interface{}, error) {
+	switch entries := data.(type) {
+	case []interface{}:
+		// We process the list instead of individual items here.
+		// The reason is that one entry might be mapped to multiple ServicePortConfig.
+		// Therefore we take an input of a list and return an output of a list.
+		ports := []interface{}{}
+		for _, entry := range entries {
+			switch value := entry.(type) {
+			case int:
+				parsed, err := types.ParsePortConfig(fmt.Sprint(value))
+				if err != nil {
+					return data, err
+				}
+				for _, v := range parsed {
+					ports = append(ports, v)
+				}
+			case string:
+				parsed, err := types.ParsePortConfig(value)
+				if err != nil {
+					return data, err
+				}
+				for _, v := range parsed {
+					ports = append(ports, v)
+				}
+			case map[string]interface{}:
+				ports = append(ports, value)
+			default:
+				return data, errors.Errorf("invalid type %T for port", value)
+			}
+		}
+		return ports, nil
+	default:
+		return data, errors.Errorf("invalid type %T for port", entries)
+	}
+}
+
+var transformStringSourceMap TransformerFunc = func(data interface{}) (interface{}, error) {
+	switch value := data.(type) {
+	case string:
+		return map[string]interface{}{"source": value}, nil
+	case map[string]interface{}:
+		return data, nil
+	default:
+		return data, errors.Errorf("invalid type %T for secret", value)
+	}
+}
+
+var transformBuildConfig TransformerFunc = func(data interface{}) (interface{}, error) {
+	switch value := data.(type) {
+	case string:
+		return map[string]interface{}{"context": value}, nil
+	case map[string]interface{}:
+		return data, nil
+	default:
+		return data, errors.Errorf("invalid type %T for service build", value)
+	}
+}
+
+var transformServiceVolumeConfig TransformerFunc = func(data interface{}) (interface{}, error) {
+	switch value := data.(type) {
+	case string:
+		return ParseVolume(value)
+	case map[string]interface{}:
+		return data, nil
+	default:
+		return data, errors.Errorf("invalid type %T for service volume", value)
+	}
+}
+
+var transformServiceNetworkMap TransformerFunc = func(value interface{}) (interface{}, error) {
+	if list, ok := value.([]interface{}); ok {
+		mapValue := map[interface{}]interface{}{}
+		for _, name := range list {
+			mapValue[name] = nil
+		}
+		return mapValue, nil
+	}
+	return value, nil
+}
+
+var transformStringOrNumberList TransformerFunc = func(value interface{}) (interface{}, error) {
+	list := value.([]interface{})
+	result := make([]string, len(list))
+	for i, item := range list {
+		result[i] = fmt.Sprint(item)
+	}
+	return result, nil
+}
+
+var transformStringList TransformerFunc = func(data interface{}) (interface{}, error) {
+	switch value := data.(type) {
+	case string:
+		return []string{value}, nil
+	case []interface{}:
+		return value, nil
+	default:
+		return data, errors.Errorf("invalid type %T for string list", value)
+	}
+}
+
+func transformMappingOrListFunc(sep string, allowNil bool) TransformerFunc {
+	return func(data interface{}) (interface{}, error) {
+		return transformMappingOrList(data, sep, allowNil), nil
+	}
+}
+
+func transformListOrMappingFunc(sep string, allowNil bool) TransformerFunc {
+	return func(data interface{}) (interface{}, error) {
+		return transformListOrMapping(data, sep, allowNil), nil
+	}
+}
+
+func transformListOrMapping(listOrMapping interface{}, sep string, allowNil bool) interface{} {
+	switch value := listOrMapping.(type) {
+	case map[string]interface{}:
+		return toStringList(value, sep, allowNil)
+	case []interface{}:
+		return listOrMapping
+	}
+	panic(errors.Errorf("expected a map or a list, got %T: %#v", listOrMapping, listOrMapping))
+}
+
+func transformMappingOrList(mappingOrList interface{}, sep string, allowNil bool) interface{} {
+	switch value := mappingOrList.(type) {
+	case map[string]interface{}:
+		return toMapStringString(value, allowNil)
+	case ([]interface{}):
+		result := make(map[string]interface{})
+		for _, value := range value {
+			parts := strings.SplitN(value.(string), sep, 2)
+			key := parts[0]
+			switch {
+			case len(parts) == 1 && allowNil:
+				result[key] = nil
+			case len(parts) == 1 && !allowNil:
+				result[key] = ""
+			default:
+				result[key] = parts[1]
+			}
+		}
+		return result
+	}
+	panic(errors.Errorf("expected a map or a list, got %T: %#v", mappingOrList, mappingOrList))
+}
+
+var transformShellCommand TransformerFunc = func(value interface{}) (interface{}, error) {
+	if str, ok := value.(string); ok {
+		return shellwords.Parse(str)
+	}
+	return value, nil
+}
+
+var transformHealthCheckTest TransformerFunc = func(data interface{}) (interface{}, error) {
+	switch value := data.(type) {
+	case string:
+		return append([]string{"CMD-SHELL"}, value), nil
+	case []interface{}:
+		return value, nil
+	default:
+		return value, errors.Errorf("invalid type %T for healthcheck.test", value)
+	}
+}
+
+var transformSize TransformerFunc = func(value interface{}) (interface{}, error) {
+	switch value := value.(type) {
+	case int:
+		return int64(value), nil
+	case string:
+		return units.RAMInBytes(value)
+	}
+	panic(errors.Errorf("invalid type for size %T", value))
+}
+
+var transformStringToDuration TransformerFunc = func(value interface{}) (interface{}, error) {
+	switch value := value.(type) {
+	case string:
+		d, err := time.ParseDuration(value)
+		if err != nil {
+			return value, err
+		}
+		return types.Duration(d), nil
+	default:
+		return value, errors.Errorf("invalid type %T for duration", value)
+	}
+}
+
+func toMapStringString(value map[string]interface{}, allowNil bool) map[string]interface{} {
+	output := make(map[string]interface{})
+	for key, value := range value {
+		output[key] = toString(value, allowNil)
+	}
+	return output
+}
+
+func toString(value interface{}, allowNil bool) interface{} {
+	switch {
+	case value != nil:
+		return fmt.Sprint(value)
+	case allowNil:
+		return nil
+	default:
+		return ""
+	}
+}
+
+func toStringList(value map[string]interface{}, separator string, allowNil bool) []string {
+	output := []string{}
+	for key, value := range value {
+		if value == nil && !allowNil {
+			continue
+		}
+		output = append(output, fmt.Sprintf("%s%s%s", key, separator, value))
+	}
+	sort.Strings(output)
+	return output
+}

vendor/github.com/compose-spec/compose-go/loader/merge.go

@@ -0,0 +1,275 @@
+/*
+   Copyright 2020 The Compose Specification Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package loader
+
+import (
+	"reflect"
+	"sort"
+
+	"github.com/compose-spec/compose-go/types"
+	"github.com/imdario/mergo"
+	"github.com/pkg/errors"
+)
+
+type specials struct {
+	m map[reflect.Type]func(dst, src reflect.Value) error
+}
+
+func (s *specials) Transformer(t reflect.Type) func(dst, src reflect.Value) error {
+	if fn, ok := s.m[t]; ok {
+		return fn
+	}
+	return nil
+}
+
+func merge(configs []*types.Config) (*types.Config, error) {
+	base := configs[0]
+	for _, override := range configs[1:] {
+		var err error
+		base.Services, err = mergeServices(base.Services, override.Services)
+		if err != nil {
+			return base, errors.Wrapf(err, "cannot merge services from %s", override.Filename)
+		}
+		base.Volumes, err = mergeVolumes(base.Volumes, override.Volumes)
+		if err != nil {
+			return base, errors.Wrapf(err, "cannot merge volumes from %s", override.Filename)
+		}
+		base.Networks, err = mergeNetworks(base.Networks, override.Networks)
+		if err != nil {
+			return base, errors.Wrapf(err, "cannot merge networks from %s", override.Filename)
+		}
+		base.Secrets, err = mergeSecrets(base.Secrets, override.Secrets)
+		if err != nil {
+			return base, errors.Wrapf(err, "cannot merge secrets from %s", override.Filename)
+		}
+		base.Configs, err = mergeConfigs(base.Configs, override.Configs)
+		if err != nil {
+			return base, errors.Wrapf(err, "cannot merge configs from %s", override.Filename)
+		}
+	}
+	return base, nil
+}
+
+func mergeServices(base, override []types.ServiceConfig) ([]types.ServiceConfig, error) {
+	baseServices := mapByName(base)
+	overrideServices := mapByName(override)
+	specials := &specials{
+		m: map[reflect.Type]func(dst, src reflect.Value) error{
+			reflect.TypeOf(&types.LoggingConfig{}):           safelyMerge(mergeLoggingConfig),
+			reflect.TypeOf(&types.UlimitsConfig{}):           safelyMerge(mergeUlimitsConfig),
+			reflect.TypeOf([]types.ServicePortConfig{}):      mergeSlice(toServicePortConfigsMap, toServicePortConfigsSlice),
+			reflect.TypeOf([]types.ServiceSecretConfig{}):    mergeSlice(toServiceSecretConfigsMap, toServiceSecretConfigsSlice),
+			reflect.TypeOf([]types.ServiceConfigObjConfig{}): mergeSlice(toServiceConfigObjConfigsMap, toSServiceConfigObjConfigsSlice),
+			reflect.TypeOf(&types.UlimitsConfig{}):           mergeUlimitsConfig,
+			reflect.TypeOf(&types.ServiceNetworkConfig{}):    mergeServiceNetworkConfig,
+		},
+	}
+	for name, overrideService := range overrideServices {
+		overrideService := overrideService
+		if baseService, ok := baseServices[name]; ok {
+			if err := mergo.Merge(&baseService, &overrideService, mergo.WithAppendSlice, mergo.WithOverride, mergo.WithTransformers(specials)); err != nil {
+				return base, errors.Wrapf(err, "cannot merge service %s", name)
+			}
+			baseServices[name] = baseService
+			continue
+		}
+		baseServices[name] = overrideService
+	}
+	services := []types.ServiceConfig{}
+	for _, baseService := range baseServices {
+		services = append(services, baseService)
+	}
+	sort.Slice(services, func(i, j int) bool { return services[i].Name < services[j].Name })
+	return services, nil
+}
+
+func toServiceSecretConfigsMap(s interface{}) (map[interface{}]interface{}, error) {
+	secrets, ok := s.([]types.ServiceSecretConfig)
+	if !ok {
+		return nil, errors.Errorf("not a serviceSecretConfig: %v", s)
+	}
+	m := map[interface{}]interface{}{}
+	for _, secret := range secrets {
+		m[secret.Source] = secret
+	}
+	return m, nil
+}
+
+func toServiceConfigObjConfigsMap(s interface{}) (map[interface{}]interface{}, error) {
+	secrets, ok := s.([]types.ServiceConfigObjConfig)
+	if !ok {
+		return nil, errors.Errorf("not a serviceSecretConfig: %v", s)
+	}
+	m := map[interface{}]interface{}{}
+	for _, secret := range secrets {
+		m[secret.Source] = secret
+	}
+	return m, nil
+}
+
+func toServicePortConfigsMap(s interface{}) (map[interface{}]interface{}, error) {
+	ports, ok := s.([]types.ServicePortConfig)
+	if !ok {
+		return nil, errors.Errorf("not a servicePortConfig slice: %v", s)
+	}
+	m := map[interface{}]interface{}{}
+	for _, p := range ports {
+		m[p.Published] = p
+	}
+	return m, nil
+}
+
+func toServiceSecretConfigsSlice(dst reflect.Value, m map[interface{}]interface{}) error {
+	s := []types.ServiceSecretConfig{}
+	for _, v := range m {
+		s = append(s, v.(types.ServiceSecretConfig))
+	}
+	sort.Slice(s, func(i, j int) bool { return s[i].Source < s[j].Source })
+	dst.Set(reflect.ValueOf(s))
+	return nil
+}
+
+func toSServiceConfigObjConfigsSlice(dst reflect.Value, m map[interface{}]interface{}) error {
+	s := []types.ServiceConfigObjConfig{}
+	for _, v := range m {
+		s = append(s, v.(types.ServiceConfigObjConfig))
+	}
+	sort.Slice(s, func(i, j int) bool { return s[i].Source < s[j].Source })
+	dst.Set(reflect.ValueOf(s))
+	return nil
+}
+
+func toServicePortConfigsSlice(dst reflect.Value, m map[interface{}]interface{}) error {
+	s := []types.ServicePortConfig{}
+	for _, v := range m {
+		s = append(s, v.(types.ServicePortConfig))
+	}
+	sort.Slice(s, func(i, j int) bool { return s[i].Published < s[j].Published })
+	dst.Set(reflect.ValueOf(s))
+	return nil
+}
+
+type tomapFn func(s interface{}) (map[interface{}]interface{}, error)
+type writeValueFromMapFn func(reflect.Value, map[interface{}]interface{}) error
+
+func safelyMerge(mergeFn func(dst, src reflect.Value) error) func(dst, src reflect.Value) error {
+	return func(dst, src reflect.Value) error {
+		if src.IsNil() {
+			return nil
+		}
+		if dst.IsNil() {
+			dst.Set(src)
+			return nil
+		}
+		return mergeFn(dst, src)
+	}
+}
+
+func mergeSlice(tomap tomapFn, writeValue writeValueFromMapFn) func(dst, src reflect.Value) error {
+	return func(dst, src reflect.Value) error {
+		dstMap, err := sliceToMap(tomap, dst)
+		if err != nil {
+			return err
+		}
+		srcMap, err := sliceToMap(tomap, src)
+		if err != nil {
+			return err
+		}
+		if err := mergo.Map(&dstMap, srcMap, mergo.WithOverride); err != nil {
+			return err
+		}
+		return writeValue(dst, dstMap)
+	}
+}
+
+func sliceToMap(tomap tomapFn, v reflect.Value) (map[interface{}]interface{}, error) {
+	// check if valid
+	if !v.IsValid() {
+		return nil, errors.Errorf("invalid value : %+v", v)
+	}
+	return tomap(v.Interface())
+}
+
+func mergeLoggingConfig(dst, src reflect.Value) error {
+	// Same driver, merging options
+	if getLoggingDriver(dst.Elem()) == getLoggingDriver(src.Elem()) ||
+		getLoggingDriver(dst.Elem()) == "" || getLoggingDriver(src.Elem()) == "" {
+		if getLoggingDriver(dst.Elem()) == "" {
+			dst.Elem().FieldByName("Driver").SetString(getLoggingDriver(src.Elem()))
+		}
+		dstOptions := dst.Elem().FieldByName("Options").Interface().(map[string]string)
+		srcOptions := src.Elem().FieldByName("Options").Interface().(map[string]string)
+		return mergo.Merge(&dstOptions, srcOptions, mergo.WithOverride)
+	}
+	// Different driver, override with src
+	dst.Set(src)
+	return nil
+}
+
+//nolint: unparam
+func mergeUlimitsConfig(dst, src reflect.Value) error {
+	if src.Interface() != reflect.Zero(reflect.TypeOf(src.Interface())).Interface() {
+		dst.Elem().Set(src.Elem())
+	}
+	return nil
+}
+
+//nolint: unparam
+func mergeServiceNetworkConfig(dst, src reflect.Value) error {
+	if src.Interface() != reflect.Zero(reflect.TypeOf(src.Interface())).Interface() {
+		dst.Elem().FieldByName("Aliases").Set(src.Elem().FieldByName("Aliases"))
+		if ipv4 := src.Elem().FieldByName("Ipv4Address").Interface().(string); ipv4 != "" {
+			dst.Elem().FieldByName("Ipv4Address").SetString(ipv4)
+		}
+		if ipv6 := src.Elem().FieldByName("Ipv6Address").Interface().(string); ipv6 != "" {
+			dst.Elem().FieldByName("Ipv6Address").SetString(ipv6)
+		}
+	}
+	return nil
+}
+
+func getLoggingDriver(v reflect.Value) string {
+	return v.FieldByName("Driver").String()
+}
+
+func mapByName(services []types.ServiceConfig) map[string]types.ServiceConfig {
+	m := map[string]types.ServiceConfig{}
+	for _, service := range services {
+		m[service.Name] = service
+	}
+	return m
+}
+
+func mergeVolumes(base, override map[string]types.VolumeConfig) (map[string]types.VolumeConfig, error) {
+	err := mergo.Map(&base, &override, mergo.WithOverride)
+	return base, err
+}
+
+func mergeNetworks(base, override map[string]types.NetworkConfig) (map[string]types.NetworkConfig, error) {
+	err := mergo.Map(&base, &override, mergo.WithOverride)
+	return base, err
+}
+
+func mergeSecrets(base, override map[string]types.SecretConfig) (map[string]types.SecretConfig, error) {
+	err := mergo.Map(&base, &override, mergo.WithOverride)
+	return base, err
+}
+
+func mergeConfigs(base, override map[string]types.ConfigObjConfig) (map[string]types.ConfigObjConfig, error) {
+	err := mergo.Map(&base, &override, mergo.WithOverride)
+	return base, err
+}

vendor/github.com/compose-spec/compose-go/loader/volume.go

@@ -0,0 +1,146 @@
+/*
+   Copyright 2020 The Compose Specification Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package loader
+
+import (
+	"strings"
+	"unicode"
+	"unicode/utf8"
+
+	"github.com/compose-spec/compose-go/types"
+	"github.com/pkg/errors"
+)
+
+const endOfSpec = rune(0)
+
+// ParseVolume parses a volume spec without any knowledge of the target platform
+func ParseVolume(spec string) (types.ServiceVolumeConfig, error) {
+	volume := types.ServiceVolumeConfig{}
+
+	switch len(spec) {
+	case 0:
+		return volume, errors.New("invalid empty volume spec")
+	case 1, 2:
+		volume.Target = spec
+		volume.Type = string(types.VolumeTypeVolume)
+		return volume, nil
+	}
+
+	buffer := []rune{}
+	for _, char := range spec + string(endOfSpec) {
+		switch {
+		case isWindowsDrive(buffer, char):
+			buffer = append(buffer, char)
+		case char == ':' || char == endOfSpec:
+			if err := populateFieldFromBuffer(char, buffer, &volume); err != nil {
+				populateType(&volume)
+				return volume, errors.Wrapf(err, "invalid spec: %s", spec)
+			}
+			buffer = []rune{}
+		default:
+			buffer = append(buffer, char)
+		}
+	}
+
+	populateType(&volume)
+	return volume, nil
+}
+
+func isWindowsDrive(buffer []rune, char rune) bool {
+	return char == ':' && len(buffer) == 1 && unicode.IsLetter(buffer[0])
+}
+
+func populateFieldFromBuffer(char rune, buffer []rune, volume *types.ServiceVolumeConfig) error {
+	strBuffer := string(buffer)
+	switch {
+	case len(buffer) == 0:
+		return errors.New("empty section between colons")
+	// Anonymous volume
+	case volume.Source == "" && char == endOfSpec:
+		volume.Target = strBuffer
+		return nil
+	case volume.Source == "":
+		volume.Source = strBuffer
+		return nil
+	case volume.Target == "":
+		volume.Target = strBuffer
+		return nil
+	case char == ':':
+		return errors.New("too many colons")
+	}
+	for _, option := range strings.Split(strBuffer, ",") {
+		switch option {
+		case "ro":
+			volume.ReadOnly = true
+		case "rw":
+			volume.ReadOnly = false
+		case "nocopy":
+			volume.Volume = &types.ServiceVolumeVolume{NoCopy: true}
+		default:
+			if isBindOption(option) {
+				volume.Bind = &types.ServiceVolumeBind{Propagation: option}
+			}
+			// ignore unknown options
+		}
+	}
+	return nil
+}
+
+var Propagations = []string{
+	types.PropagationRPrivate,
+	types.PropagationPrivate,
+	types.PropagationRShared,
+	types.PropagationShared,
+	types.PropagationRSlave,
+	types.PropagationSlave,
+}
+
+func isBindOption(option string) bool {
+	for _, propagation := range Propagations {
+		if option == propagation {
+			return true
+		}
+	}
+	return false
+}
+
+func populateType(volume *types.ServiceVolumeConfig) {
+	switch {
+	// Anonymous volume
+	case volume.Source == "":
+		volume.Type = string(types.VolumeTypeVolume)
+	case isFilePath(volume.Source):
+		volume.Type = string(types.VolumeTypeBind)
+	default:
+		volume.Type = string(types.VolumeTypeVolume)
+	}
+}
+
+func isFilePath(source string) bool {
+	switch source[0] {
+	case '.', '/', '~':
+		return true
+	}
+
+	// windows named pipes
+	if strings.HasPrefix(source, `\\`) {
+		return true
+	}
+
+	first, nextIndex := utf8.DecodeRuneInString(source)
+	return isWindowsDrive([]rune{first}, rune(source[nextIndex]))
+}

vendor/github.com/compose-spec/compose-go/loader/windows_path.go

@@ -0,0 +1,82 @@
+/*
+   Copyright 2020 The Compose Specification Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package loader
+
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+// https://github.com/golang/go/blob/master/LICENSE
+
+// This file contains utilities to check for Windows absolute paths on Linux.
+// The code in this file was largely copied from the Golang filepath package
+// https://github.com/golang/go/blob/1d0e94b1e13d5e8a323a63cd1cc1ef95290c9c36/src/path/filepath/path_windows.go#L12-L65
+
+func isSlash(c uint8) bool {
+	return c == '\\' || c == '/'
+}
+
+// isAbs reports whether the path is a Windows absolute path.
+func isAbs(path string) (b bool) {
+	l := volumeNameLen(path)
+	if l == 0 {
+		return false
+	}
+	path = path[l:]
+	if path == "" {
+		return false
+	}
+	return isSlash(path[0])
+}
+
+// volumeNameLen returns length of the leading volume name on Windows.
+// It returns 0 elsewhere.
+// nolint: gocyclo
+func volumeNameLen(path string) int {
+	if len(path) < 2 {
+		return 0
+	}
+	// with drive letter
+	c := path[0]
+	if path[1] == ':' && ('a' <= c && c <= 'z' || 'A' <= c && c <= 'Z') {
+		return 2
+	}
+	// is it UNC? https://msdn.microsoft.com/en-us/library/windows/desktop/aa365247(v=vs.85).aspx
+	if l := len(path); l >= 5 && isSlash(path[0]) && isSlash(path[1]) &&
+		!isSlash(path[2]) && path[2] != '.' {
+		// first, leading `\\` and next shouldn't be `\`. its server name.
+		for n := 3; n < l-1; n++ {
+			// second, next '\' shouldn't be repeated.
+			if isSlash(path[n]) {
+				n++
+				// third, following something characters. its share name.
+				if !isSlash(path[n]) {
+					if path[n] == '.' {
+						break
+					}
+					for ; n < l; n++ {
+						if isSlash(path[n]) {
+							break
+						}
+					}
+					return n
+				}
+				break
+			}
+		}
+	}
+	return 0
+}

vendor/github.com/compose-spec/compose-go/schema/bindata.go

@@ -0,0 +1,269 @@
+// Code generated by "esc -o bindata.go -pkg schema -ignore .*.go -private data"; DO NOT EDIT.
+
+package schema
+
+import (
+	"bytes"
+	"compress/gzip"
+	"encoding/base64"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"path"
+	"sync"
+	"time"
+)
+
+type _escLocalFS struct{}
+
+var _escLocal _escLocalFS
+
+type _escStaticFS struct{}
+
+var _escStatic _escStaticFS
+
+type _escDirectory struct {
+	fs   http.FileSystem
+	name string
+}
+
+type _escFile struct {
+	compressed string
+	size       int64
+	modtime    int64
+	local      string
+	isDir      bool
+
+	once sync.Once
+	data []byte
+	name string
+}
+
+func (_escLocalFS) Open(name string) (http.File, error) {
+	f, present := _escData[path.Clean(name)]
+	if !present {
+		return nil, os.ErrNotExist
+	}
+	return os.Open(f.local)
+}
+
+func (_escStaticFS) prepare(name string) (*_escFile, error) {
+	f, present := _escData[path.Clean(name)]
+	if !present {
+		return nil, os.ErrNotExist
+	}
+	var err error
+	f.once.Do(func() {
+		f.name = path.Base(name)
+		if f.size == 0 {
+			return
+		}
+		var gr *gzip.Reader
+		b64 := base64.NewDecoder(base64.StdEncoding, bytes.NewBufferString(f.compressed))
+		gr, err = gzip.NewReader(b64)
+		if err != nil {
+			return
+		}
+		f.data, err = ioutil.ReadAll(gr)
+	})
+	if err != nil {
+		return nil, err
+	}
+	return f, nil
+}
+
+func (fs _escStaticFS) Open(name string) (http.File, error) {
+	f, err := fs.prepare(name)
+	if err != nil {
+		return nil, err
+	}
+	return f.File()
+}
+
+func (dir _escDirectory) Open(name string) (http.File, error) {
+	return dir.fs.Open(dir.name + name)
+}
+
+func (f *_escFile) File() (http.File, error) {
+	type httpFile struct {
+		*bytes.Reader
+		*_escFile
+	}
+	return &httpFile{
+		Reader:   bytes.NewReader(f.data),
+		_escFile: f,
+	}, nil
+}
+
+func (f *_escFile) Close() error {
+	return nil
+}
+
+func (f *_escFile) Readdir(count int) ([]os.FileInfo, error) {
+	if !f.isDir {
+		return nil, fmt.Errorf(" escFile.Readdir: '%s' is not directory", f.name)
+	}
+
+	fis, ok := _escDirs[f.local]
+	if !ok {
+		return nil, fmt.Errorf(" escFile.Readdir: '%s' is directory, but we have no info about content of this dir, local=%s", f.name, f.local)
+	}
+	limit := count
+	if count <= 0 || limit > len(fis) {
+		limit = len(fis)
+	}
+
+	if len(fis) == 0 && count > 0 {
+		return nil, io.EOF
+	}
+
+	return fis[0:limit], nil
+}
+
+func (f *_escFile) Stat() (os.FileInfo, error) {
+	return f, nil
+}
+
+func (f *_escFile) Name() string {
+	return f.name
+}
+
+func (f *_escFile) Size() int64 {
+	return f.size
+}
+
+func (f *_escFile) Mode() os.FileMode {
+	return 0
+}
+
+func (f *_escFile) ModTime() time.Time {
+	return time.Unix(f.modtime, 0)
+}
+
+func (f *_escFile) IsDir() bool {
+	return f.isDir
+}
+
+func (f *_escFile) Sys() interface{} {
+	return f
+}
+
+// _escFS returns a http.Filesystem for the embedded assets. If useLocal is true,
+// the filesystem's contents are instead used.
+func _escFS(useLocal bool) http.FileSystem {
+	if useLocal {
+		return _escLocal
+	}
+	return _escStatic
+}
+
+// _escDir returns a http.Filesystem for the embedded assets on a given prefix dir.
+// If useLocal is true, the filesystem's contents are instead used.
+func _escDir(useLocal bool, name string) http.FileSystem {
+	if useLocal {
+		return _escDirectory{fs: _escLocal, name: name}
+	}
+	return _escDirectory{fs: _escStatic, name: name}
+}
+
+// _escFSByte returns the named file from the embedded assets. If useLocal is
+// true, the filesystem's contents are instead used.
+func _escFSByte(useLocal bool, name string) ([]byte, error) {
+	if useLocal {
+		f, err := _escLocal.Open(name)
+		if err != nil {
+			return nil, err
+		}
+		b, err := ioutil.ReadAll(f)
+		_ = f.Close()
+		return b, err
+	}
+	f, err := _escStatic.prepare(name)
+	if err != nil {
+		return nil, err
+	}
+	return f.data, nil
+}
+
+// _escFSMustByte is the same as _escFSByte, but panics if name is not present.
+func _escFSMustByte(useLocal bool, name string) []byte {
+	b, err := _escFSByte(useLocal, name)
+	if err != nil {
+		panic(err)
+	}
+	return b
+}
+
+// _escFSString is the string version of _escFSByte.
+func _escFSString(useLocal bool, name string) (string, error) {
+	b, err := _escFSByte(useLocal, name)
+	return string(b), err
+}
+
+// _escFSMustString is the string version of _escFSMustByte.
+func _escFSMustString(useLocal bool, name string) string {
+	return string(_escFSMustByte(useLocal, name))
+}
+
+var _escData = map[string]*_escFile{
+
+	"/data/config_schema_v3.9.json": {
+		name:    "config_schema_v3.9.json",
+		local:   "data/config_schema_v3.9.json",
+		size:    18246,
+		modtime: 1576078020,
+		compressed: `
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+py23VJ+2vLQtfxArsFqaBtYwvVqbU1B03/VqeJPWb8Mmc/xChy8L9W7KdxFsLdrqZp7zBYPIwy8zaH/u
++4gbweQFmkndOrUKVKu+ddT+gQF/6OnGT35uoOJTHCdXvz/G7UPNTwWsR/KxSJpvlwZRex1VvHD9CIHd
+vNT9GICnn3Kc4a+q/59W/w0AAP//CCwovkZHAAA=
+`,
+	},
+
+	"/data": {
+		name:  "data",
+		local: `data`,
+		isDir: true,
+	},
+}
+
+var _escDirs = map[string][]os.FileInfo{
+
+	"data": {
+		_escData["/data/config_schema_v3.9.json"],
+	},
+}

vendor/github.com/compose-spec/compose-go/schema/schema.go

@@ -0,0 +1,191 @@
+/*
+   Copyright 2020 The Compose Specification Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package schema
+
+//go:generate esc -o bindata.go -pkg schema -ignore .*\.go -private -modtime=1518458244 data
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	"github.com/pkg/errors"
+	"github.com/xeipuuv/gojsonschema"
+)
+
+const (
+	defaultVersion = "1.0"
+	versionField   = "version"
+)
+
+type portsFormatChecker struct{}
+
+func (checker portsFormatChecker) IsFormat(input interface{}) bool {
+	// TODO: implement this
+	return true
+}
+
+type durationFormatChecker struct{}
+
+func (checker durationFormatChecker) IsFormat(input interface{}) bool {
+	value, ok := input.(string)
+	if !ok {
+		return false
+	}
+	_, err := time.ParseDuration(value)
+	return err == nil
+}
+
+func init() {
+	gojsonschema.FormatCheckers.Add("expose", portsFormatChecker{})
+	gojsonschema.FormatCheckers.Add("ports", portsFormatChecker{})
+	gojsonschema.FormatCheckers.Add("duration", durationFormatChecker{})
+}
+
+// Version returns the version of the config, defaulting to version 1.0
+func Version(config map[string]interface{}) string {
+	version, ok := config[versionField]
+	if !ok {
+		return defaultVersion
+	}
+	return normalizeVersion(fmt.Sprintf("%v", version))
+}
+
+func normalizeVersion(version string) string {
+	switch version {
+	case "3":
+		return "3.9" // latest
+	case "3.0", "3.1", "3.2", "3.3", "3.4", "3.5", "3.6", "3.7", "3.8":
+		return "3.9" // pre-existing specification but backward compatible
+	default:
+		return version
+	}
+}
+
+// Validate uses the jsonschema to validate the configuration
+func Validate(config map[string]interface{}, version string) error {
+	version = normalizeVersion(version)
+	schemaData, err := _escFSByte(false, fmt.Sprintf("/data/config_schema_v%s.json", version))
+	if err != nil {
+		return errors.Errorf("unsupported Compose file version: %s", version)
+	}
+
+	schemaLoader := gojsonschema.NewStringLoader(string(schemaData))
+	dataLoader := gojsonschema.NewGoLoader(config)
+
+	result, err := gojsonschema.Validate(schemaLoader, dataLoader)
+	if err != nil {
+		return err
+	}
+
+	if !result.Valid() {
+		return toError(result)
+	}
+
+	return nil
+}
+
+func toError(result *gojsonschema.Result) error {
+	err := getMostSpecificError(result.Errors())
+	return err
+}
+
+const (
+	jsonschemaOneOf = "number_one_of"
+	jsonschemaAnyOf = "number_any_of"
+)
+
+func getDescription(err validationError) string {
+	switch err.parent.Type() {
+	case "invalid_type":
+		if expectedType, ok := err.parent.Details()["expected"].(string); ok {
+			return fmt.Sprintf("must be a %s", humanReadableType(expectedType))
+		}
+	case jsonschemaOneOf, jsonschemaAnyOf:
+		if err.child == nil {
+			return err.parent.Description()
+		}
+		return err.child.Description()
+	}
+	return err.parent.Description()
+}
+
+func humanReadableType(definition string) string {
+	if definition[0:1] == "[" {
+		allTypes := strings.Split(definition[1:len(definition)-1], ",")
+		for i, t := range allTypes {
+			allTypes[i] = humanReadableType(t)
+		}
+		return fmt.Sprintf(
+			"%s or %s",
+			strings.Join(allTypes[0:len(allTypes)-1], ", "),
+			allTypes[len(allTypes)-1],
+		)
+	}
+	if definition == "object" {
+		return "mapping"
+	}
+	if definition == "array" {
+		return "list"
+	}
+	return definition
+}
+
+type validationError struct {
+	parent gojsonschema.ResultError
+	child  gojsonschema.ResultError
+}
+
+func (err validationError) Error() string {
+	description := getDescription(err)
+	return fmt.Sprintf("%s %s", err.parent.Field(), description)
+}
+
+func getMostSpecificError(errors []gojsonschema.ResultError) validationError {
+	mostSpecificError := 0
+	for i, err := range errors {
+		if specificity(err) > specificity(errors[mostSpecificError]) {
+			mostSpecificError = i
+			continue
+		}
+
+		if specificity(err) == specificity(errors[mostSpecificError]) {
+			// Invalid type errors win in a tie-breaker for most specific field name
+			if err.Type() == "invalid_type" && errors[mostSpecificError].Type() != "invalid_type" {
+				mostSpecificError = i
+			}
+		}
+	}
+
+	if mostSpecificError+1 == len(errors) {
+		return validationError{parent: errors[mostSpecificError]}
+	}
+
+	switch errors[mostSpecificError].Type() {
+	case "number_one_of", "number_any_of":
+		return validationError{
+			parent: errors[mostSpecificError],
+			child:  errors[mostSpecificError+1],
+		}
+	default:
+		return validationError{parent: errors[mostSpecificError]}
+	}
+}
+
+func specificity(err gojsonschema.ResultError) int {
+	return len(strings.Split(err.Field(), "."))
+}

vendor/github.com/compose-spec/compose-go/template/template.go

@@ -0,0 +1,269 @@
+/*
+   Copyright 2020 The Compose Specification Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package template
+
+import (
+	"fmt"
+	"regexp"
+	"strings"
+)
+
+var delimiter = "\\$"
+var substitution = "[_a-z][_a-z0-9]*(?::?[-?][^}]*)?"
+
+var patternString = fmt.Sprintf(
+	"%s(?i:(?P<escaped>%s)|(?P<named>%s)|{(?P<braced>%s)}|(?P<invalid>))",
+	delimiter, delimiter, substitution, substitution,
+)
+
+var defaultPattern = regexp.MustCompile(patternString)
+
+// DefaultSubstituteFuncs contains the default SubstituteFunc used by the docker cli
+var DefaultSubstituteFuncs = []SubstituteFunc{
+	softDefault,
+	hardDefault,
+	requiredNonEmpty,
+	required,
+}
+
+// InvalidTemplateError is returned when a variable template is not in a valid
+// format
+type InvalidTemplateError struct {
+	Template string
+}
+
+func (e InvalidTemplateError) Error() string {
+	return fmt.Sprintf("Invalid template: %#v", e.Template)
+}
+
+// Mapping is a user-supplied function which maps from variable names to values.
+// Returns the value as a string and a bool indicating whether
+// the value is present, to distinguish between an empty string
+// and the absence of a value.
+type Mapping func(string) (string, bool)
+
+// SubstituteFunc is a user-supplied function that apply substitution.
+// Returns the value as a string, a bool indicating if the function could apply
+// the substitution and an error.
+type SubstituteFunc func(string, Mapping) (string, bool, error)
+
+// SubstituteWith subsitute variables in the string with their values.
+// It accepts additional substitute function.
+func SubstituteWith(template string, mapping Mapping, pattern *regexp.Regexp, subsFuncs ...SubstituteFunc) (string, error) {
+	var err error
+	result := pattern.ReplaceAllStringFunc(template, func(substring string) string {
+		matches := pattern.FindStringSubmatch(substring)
+		groups := matchGroups(matches, pattern)
+		if escaped := groups["escaped"]; escaped != "" {
+			return escaped
+		}
+
+		substitution := groups["named"]
+		if substitution == "" {
+			substitution = groups["braced"]
+		}
+
+		if substitution == "" {
+			err = &InvalidTemplateError{Template: template}
+			return ""
+		}
+
+		for _, f := range subsFuncs {
+			var (
+				value   string
+				applied bool
+			)
+			value, applied, err = f(substitution, mapping)
+			if err != nil {
+				return ""
+			}
+			if !applied {
+				continue
+			}
+			return value
+		}
+
+		value, _ := mapping(substitution)
+		return value
+	})
+
+	return result, err
+}
+
+// Substitute variables in the string with their values
+func Substitute(template string, mapping Mapping) (string, error) {
+	return SubstituteWith(template, mapping, defaultPattern, DefaultSubstituteFuncs...)
+}
+
+// ExtractVariables returns a map of all the variables defined in the specified
+// composefile (dict representation) and their default value if any.
+func ExtractVariables(configDict map[string]interface{}, pattern *regexp.Regexp) map[string]Variable {
+	if pattern == nil {
+		pattern = defaultPattern
+	}
+	return recurseExtract(configDict, pattern)
+}
+
+func recurseExtract(value interface{}, pattern *regexp.Regexp) map[string]Variable {
+	m := map[string]Variable{}
+
+	switch value := value.(type) {
+	case string:
+		if values, is := extractVariable(value, pattern); is {
+			for _, v := range values {
+				m[v.Name] = v
+			}
+		}
+	case map[string]interface{}:
+		for _, elem := range value {
+			submap := recurseExtract(elem, pattern)
+			for key, value := range submap {
+				m[key] = value
+			}
+		}
+
+	case []interface{}:
+		for _, elem := range value {
+			if values, is := extractVariable(elem, pattern); is {
+				for _, v := range values {
+					m[v.Name] = v
+				}
+			}
+		}
+	}
+
+	return m
+}
+
+type Variable struct {
+	Name         string
+	DefaultValue string
+	Required     bool
+}
+
+func extractVariable(value interface{}, pattern *regexp.Regexp) ([]Variable, bool) {
+	sValue, ok := value.(string)
+	if !ok {
+		return []Variable{}, false
+	}
+	matches := pattern.FindAllStringSubmatch(sValue, -1)
+	if len(matches) == 0 {
+		return []Variable{}, false
+	}
+	values := []Variable{}
+	for _, match := range matches {
+		groups := matchGroups(match, pattern)
+		if escaped := groups["escaped"]; escaped != "" {
+			continue
+		}
+		val := groups["named"]
+		if val == "" {
+			val = groups["braced"]
+		}
+		name := val
+		var defaultValue string
+		var required bool
+		switch {
+		case strings.Contains(val, ":?"):
+			name, _ = partition(val, ":?")
+			required = true
+		case strings.Contains(val, "?"):
+			name, _ = partition(val, "?")
+			required = true
+		case strings.Contains(val, ":-"):
+			name, defaultValue = partition(val, ":-")
+		case strings.Contains(val, "-"):
+			name, defaultValue = partition(val, "-")
+		}
+		values = append(values, Variable{
+			Name:         name,
+			DefaultValue: defaultValue,
+			Required:     required,
+		})
+	}
+	return values, len(values) > 0
+}
+
+// Soft default (fall back if unset or empty)
+func softDefault(substitution string, mapping Mapping) (string, bool, error) {
+	sep := ":-"
+	if !strings.Contains(substitution, sep) {
+		return "", false, nil
+	}
+	name, defaultValue := partition(substitution, sep)
+	value, ok := mapping(name)
+	if !ok || value == "" {
+		return defaultValue, true, nil
+	}
+	return value, true, nil
+}
+
+// Hard default (fall back if-and-only-if empty)
+func hardDefault(substitution string, mapping Mapping) (string, bool, error) {
+	sep := "-"
+	if !strings.Contains(substitution, sep) {
+		return "", false, nil
+	}
+	name, defaultValue := partition(substitution, sep)
+	value, ok := mapping(name)
+	if !ok {
+		return defaultValue, true, nil
+	}
+	return value, true, nil
+}
+
+func requiredNonEmpty(substitution string, mapping Mapping) (string, bool, error) {
+	return withRequired(substitution, mapping, ":?", func(v string) bool { return v != "" })
+}
+
+func required(substitution string, mapping Mapping) (string, bool, error) {
+	return withRequired(substitution, mapping, "?", func(_ string) bool { return true })
+}
+
+func withRequired(substitution string, mapping Mapping, sep string, valid func(string) bool) (string, bool, error) {
+	if !strings.Contains(substitution, sep) {
+		return "", false, nil
+	}
+	name, errorMessage := partition(substitution, sep)
+	value, ok := mapping(name)
+	if !ok || !valid(value) {
+		return "", true, &InvalidTemplateError{
+			Template: fmt.Sprintf("required variable %s is missing a value: %s", name, errorMessage),
+		}
+	}
+	return value, true, nil
+}
+
+func matchGroups(matches []string, pattern *regexp.Regexp) map[string]string {
+	groups := make(map[string]string)
+	for i, name := range pattern.SubexpNames()[1:] {
+		groups[name] = matches[i+1]
+	}
+	return groups
+}
+
+// Split the string at the first occurrence of sep, and return the part before the separator,
+// and the part after the separator.
+//
+// If the separator is not found, return the string itself, followed by an empty string.
+func partition(s, sep string) (string, string) {
+	if strings.Contains(s, sep) {
+		parts := strings.SplitN(s, sep, 2)
+		return parts[0], parts[1]
+	}
+	return s, ""
+}

vendor/github.com/compose-spec/compose-go/types/config.go

@@ -0,0 +1,187 @@
+/*
+   Copyright 2020 The Compose Specification Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package types
+
+import (
+	"encoding/json"
+	"fmt"
+	"sort"
+)
+
+// ConfigDetails are the details about a group of ConfigFiles
+type ConfigDetails struct {
+	Version     string
+	WorkingDir  string
+	ConfigFiles []ConfigFile
+	Environment map[string]string
+}
+
+// LookupEnv provides a lookup function for environment variables
+func (cd ConfigDetails) LookupEnv(key string) (string, bool) {
+	v, ok := cd.Environment[key]
+	return v, ok
+}
+
+// ConfigFile is a filename and the contents of the file as a Dict
+type ConfigFile struct {
+	Filename string
+	Config   map[string]interface{}
+}
+
+// Config is a full compose file configuration
+type Config struct {
+	Filename   string                     `yaml:"-" json:"-"`
+	Version    string                     `json:"version"`
+	Services   Services                   `json:"services"`
+	Networks   map[string]NetworkConfig   `yaml:",omitempty" json:"networks,omitempty"`
+	Volumes    map[string]VolumeConfig    `yaml:",omitempty" json:"volumes,omitempty"`
+	Secrets    map[string]SecretConfig    `yaml:",omitempty" json:"secrets,omitempty"`
+	Configs    map[string]ConfigObjConfig `yaml:",omitempty" json:"configs,omitempty"`
+	Extensions map[string]interface{}     `yaml:",inline" json:"-"`
+}
+
+// ServiceNames return names for all services in this Compose config
+func (c Config) ServiceNames() []string {
+	names := []string{}
+	for _, s := range c.Services {
+		names = append(names, s.Name)
+	}
+	sort.Strings(names)
+	return names
+}
+
+// VolumeNames return names for all volumes in this Compose config
+func (c Config) VolumeNames() []string {
+	names := []string{}
+	for k := range c.Volumes {
+		names = append(names, k)
+	}
+	sort.Strings(names)
+	return names
+}
+
+// NetworkNames return names for all volumes in this Compose config
+func (c Config) NetworkNames() []string {
+	names := []string{}
+	for k := range c.Networks {
+		names = append(names, k)
+	}
+	sort.Strings(names)
+	return names
+}
+
+// SecretNames return names for all secrets in this Compose config
+func (c Config) SecretNames() []string {
+	names := []string{}
+	for k := range c.Secrets {
+		names = append(names, k)
+	}
+	sort.Strings(names)
+	return names
+}
+
+// ConfigNames return names for all configs in this Compose config
+func (c Config) ConfigNames() []string {
+	names := []string{}
+	for k := range c.Configs {
+		names = append(names, k)
+	}
+	sort.Strings(names)
+	return names
+}
+
+// GetServices retrieve services by names, or return all services if no name specified
+func (c Config) GetServices(names []string) (Services, error) {
+	if len(names) == 0 {
+		return c.Services, nil
+	}
+	services := Services{}
+	for _, name := range names {
+		service, err := c.GetService(name)
+		if err != nil {
+			return nil, err
+		}
+		services = append(services, service)
+	}
+	return services, nil
+}
+
+// GetService retrieve a specific service by name
+func (c Config) GetService(name string) (ServiceConfig, error) {
+	for _, s := range c.Services {
+		if s.Name == name {
+			return s, nil
+		}
+	}
+	return ServiceConfig{}, fmt.Errorf("no such service: %s", name)
+}
+
+type ServiceFunc func(service ServiceConfig) error
+
+// WithServices run ServiceFunc on each service and dependencies in dependency order
+func (c Config) WithServices(names []string, fn ServiceFunc) error {
+	return c.withServices(names, fn, map[string]bool{})
+}
+
+func (c Config) withServices(names []string, fn ServiceFunc, done map[string]bool) error {
+	services, err := c.GetServices(names)
+	if err != nil {
+		return err
+	}
+	for _, service := range services {
+		if done[service.Name] {
+			continue
+		}
+		dependencies := service.GetDependencies()
+		if len(dependencies) > 0 {
+			err := c.withServices(dependencies, fn, done)
+			if err != nil {
+				return err
+			}
+		}
+		if err := fn(service); err != nil {
+			return err
+		}
+		done[service.Name] = true
+	}
+	return nil
+}
+
+// MarshalJSON makes Config implement json.Marshaler
+func (c Config) MarshalJSON() ([]byte, error) {
+	m := map[string]interface{}{
+		"version":  c.Version,
+		"services": c.Services,
+	}
+
+	if len(c.Networks) > 0 {
+		m["networks"] = c.Networks
+	}
+	if len(c.Volumes) > 0 {
+		m["volumes"] = c.Volumes
+	}
+	if len(c.Secrets) > 0 {
+		m["secrets"] = c.Secrets
+	}
+	if len(c.Configs) > 0 {
+		m["configs"] = c.Configs
+	}
+	for k, v := range c.Extensions {
+		m[k] = v
+	}
+	return json.Marshal(m)
+}

vendor/github.com/compose-spec/compose-go/types/types.go

@@ -0,0 +1,648 @@
+/*
+   Copyright 2020 The Compose Specification Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package types
+
+import (
+	"encoding/json"
+	"fmt"
+	"sort"
+	"strings"
+	"time"
+
+	"github.com/docker/go-connections/nat"
+)
+
+// Duration is a thin wrapper around time.Duration with improved JSON marshalling
+type Duration time.Duration
+
+func (d Duration) String() string {
+	return time.Duration(d).String()
+}
+
+// ConvertDurationPtr converts a typedefined Duration pointer to a time.Duration pointer with the same value.
+func ConvertDurationPtr(d *Duration) *time.Duration {
+	if d == nil {
+		return nil
+	}
+	res := time.Duration(*d)
+	return &res
+}
+
+// MarshalJSON makes Duration implement json.Marshaler
+func (d Duration) MarshalJSON() ([]byte, error) {
+	return json.Marshal(d.String())
+}
+
+// MarshalYAML makes Duration implement yaml.Marshaler
+func (d Duration) MarshalYAML() (interface{}, error) {
+	return d.String(), nil
+}
+
+// Services is a list of ServiceConfig
+type Services []ServiceConfig
+
+// MarshalYAML makes Services implement yaml.Marshaller
+func (s Services) MarshalYAML() (interface{}, error) {
+	services := map[string]ServiceConfig{}
+	for _, service := range s {
+		services[service.Name] = service
+	}
+	return services, nil
+}
+
+// MarshalJSON makes Services implement json.Marshaler
+func (s Services) MarshalJSON() ([]byte, error) {
+	data, err := s.MarshalYAML()
+	if err != nil {
+		return nil, err
+	}
+	return json.MarshalIndent(data, "", "  ")
+}
+
+// ServiceConfig is the configuration of one service
+type ServiceConfig struct {
+	Name string `yaml:"-" json:"-"`
+
+	Build           *BuildConfig                     `yaml:",omitempty" json:"build,omitempty"`
+	CapAdd          []string                         `mapstructure:"cap_add" yaml:"cap_add,omitempty" json:"cap_add,omitempty"`
+	CapDrop         []string                         `mapstructure:"cap_drop" yaml:"cap_drop,omitempty" json:"cap_drop,omitempty"`
+	CgroupParent    string                           `mapstructure:"cgroup_parent" yaml:"cgroup_parent,omitempty" json:"cgroup_parent,omitempty"`
+	CPUQuota        int64                            `mapstructure:"cpu_quota" yaml:"cpu_quota,omitempty" json:"cpu_quota,omitempty"`
+	CPUSet          string                           `mapstructure:"cpuset" yaml:"cpuset,omitempty" json:"cpuset,omitempty"`
+	CPUShares       int64                            `mapstructure:"cpu_shares" yaml:"cpu_shares,omitempty" json:"cpu_shares,omitempty"`
+	Command         ShellCommand                     `yaml:",omitempty" json:"command,omitempty"`
+	Configs         []ServiceConfigObjConfig         `yaml:",omitempty" json:"configs,omitempty"`
+	ContainerName   string                           `mapstructure:"container_name" yaml:"container_name,omitempty" json:"container_name,omitempty"`
+	CredentialSpec  *CredentialSpecConfig            `mapstructure:"credential_spec" yaml:"credential_spec,omitempty" json:"credential_spec,omitempty"`
+	DependsOn       []string                         `mapstructure:"depends_on" yaml:"depends_on,omitempty" json:"depends_on,omitempty"`
+	Deploy          *DeployConfig                    `yaml:",omitempty" json:"deploy,omitempty"`
+	Devices         []string                         `yaml:",omitempty" json:"devices,omitempty"`
+	DNS             StringList                       `yaml:",omitempty" json:"dns,omitempty"`
+	DNSOpts         []string                         `mapstructure:"dns_opt" yaml:"dns_opt,omitempty" json:"dns_opt,omitempty"`
+	DNSSearch       StringList                       `mapstructure:"dns_search" yaml:"dns_search,omitempty" json:"dns_search,omitempty"`
+	Dockerfile      string                           `yaml:"dockerfile,omitempty" json:"dockerfile,omitempty"`
+	DomainName      string                           `mapstructure:"domainname" yaml:"domainname,omitempty" json:"domainname,omitempty"`
+	Entrypoint      ShellCommand                     `yaml:",omitempty" json:"entrypoint,omitempty"`
+	Environment     MappingWithEquals                `yaml:",omitempty" json:"environment,omitempty"`
+	EnvFile         StringList                       `mapstructure:"env_file" yaml:"env_file,omitempty" json:"env_file,omitempty"`
+	Expose          StringOrNumberList               `yaml:",omitempty" json:"expose,omitempty"`
+	Extends         MappingWithEquals                `yaml:"extends,omitempty" json:"extends,omitempty"`
+	ExternalLinks   []string                         `mapstructure:"external_links" yaml:"external_links,omitempty" json:"external_links,omitempty"`
+	ExtraHosts      HostsList                        `mapstructure:"extra_hosts" yaml:"extra_hosts,omitempty" json:"extra_hosts,omitempty"`
+	GroupAdd        []string                         `mapstructure:"group_app" yaml:"group_add,omitempty" json:"group_add,omitempty"`
+	Hostname        string                           `yaml:",omitempty" json:"hostname,omitempty"`
+	HealthCheck     *HealthCheckConfig               `yaml:",omitempty" json:"healthcheck,omitempty"`
+	Image           string                           `yaml:",omitempty" json:"image,omitempty"`
+	Init            *bool                            `yaml:",omitempty" json:"init,omitempty"`
+	Ipc             string                           `yaml:",omitempty" json:"ipc,omitempty"`
+	Isolation       string                           `mapstructure:"isolation" yaml:"isolation,omitempty" json:"isolation,omitempty"`
+	Labels          Labels                           `yaml:",omitempty" json:"labels,omitempty"`
+	Links           []string                         `yaml:",omitempty" json:"links,omitempty"`
+	Logging         *LoggingConfig                   `yaml:",omitempty" json:"logging,omitempty"`
+	LogDriver       string                           `mapstructure:"log_driver" yaml:"log_driver,omitempty" json:"log_driver,omitempty"`
+	LogOpt          map[string]string                `mapstructure:"log_opt" yaml:"log_opt,omitempty" json:"log_opt,omitempty"`
+	MemLimit        UnitBytes                        `mapstructure:"mem_limit" yaml:"mem_limit,omitempty" json:"mem_limit,omitempty"`
+	MemReservation  UnitBytes                        `mapstructure:"mem_reservation" yaml:"mem_reservation,omitempty" json:"mem_reservation,omitempty"`
+	MemSwapLimit    UnitBytes                        `mapstructure:"memswap_limit" yaml:"memswap_limit,omitempty" json:"memswap_limit,omitempty"`
+	MemSwappiness   UnitBytes                        `mapstructure:"mem_swappiness" yaml:"mem_swappiness,omitempty" json:"mem_swappiness,omitempty"`
+	MacAddress      string                           `mapstructure:"mac_address" yaml:"mac_address,omitempty" json:"mac_address,omitempty"`
+	Net             string                           `yaml:"net,omitempty" json:"net,omitempty"`
+	NetworkMode     string                           `mapstructure:"network_mode" yaml:"network_mode,omitempty" json:"network_mode,omitempty"`
+	Networks        map[string]*ServiceNetworkConfig `yaml:",omitempty" json:"networks,omitempty"`
+	OomKillDisable  bool                             `mapstructure:"oom_kill_disable" yaml:"oom_kill_disable,omitempty" json:"oom_kill_disable,omitempty"`
+	OomScoreAdj     int64                            `mapstructure:"oom_score_adj" yaml:"oom_score_adj,omitempty" json:"oom_score_adj,omitempty"`
+	Pid             string                           `yaml:",omitempty" json:"pid,omitempty"`
+	Ports           []ServicePortConfig              `yaml:",omitempty" json:"ports,omitempty"`
+	Privileged      bool                             `yaml:",omitempty" json:"privileged,omitempty"`
+	ReadOnly        bool                             `mapstructure:"read_only" yaml:"read_only,omitempty" json:"read_only,omitempty"`
+	Restart         string                           `yaml:",omitempty" json:"restart,omitempty"`
+	Secrets         []ServiceSecretConfig            `yaml:",omitempty" json:"secrets,omitempty"`
+	SecurityOpt     []string                         `mapstructure:"security_opt" yaml:"security_opt,omitempty" json:"security_opt,omitempty"`
+	ShmSize         string                           `mapstructure:"shm_size" yaml:"shm_size,omitempty" json:"shm_size,omitempty"`
+	StdinOpen       bool                             `mapstructure:"stdin_open" yaml:"stdin_open,omitempty" json:"stdin_open,omitempty"`
+	StopGracePeriod *Duration                        `mapstructure:"stop_grace_period" yaml:"stop_grace_period,omitempty" json:"stop_grace_period,omitempty"`
+	StopSignal      string                           `mapstructure:"stop_signal" yaml:"stop_signal,omitempty" json:"stop_signal,omitempty"`
+	Sysctls         Mapping                          `yaml:",omitempty" json:"sysctls,omitempty"`
+	Tmpfs           StringList                       `yaml:",omitempty" json:"tmpfs,omitempty"`
+	Tty             bool                             `mapstructure:"tty" yaml:"tty,omitempty" json:"tty,omitempty"`
+	Ulimits         map[string]*UlimitsConfig        `yaml:",omitempty" json:"ulimits,omitempty"`
+	User            string                           `yaml:",omitempty" json:"user,omitempty"`
+	UserNSMode      string                           `mapstructure:"userns_mode" yaml:"userns_mode,omitempty" json:"userns_mode,omitempty"`
+	Uts             string                           `yaml:"uts,omitempty" json:"uts,omitempty"`
+	VolumeDriver    string                           `mapstructure:"volume_driver" yaml:"volume_driver,omitempty" json:"volume_driver,omitempty"`
+	Volumes         []ServiceVolumeConfig            `yaml:",omitempty" json:"volumes,omitempty"`
+	VolumesFrom     []string                         `mapstructure:"volumes_from" yaml:"volumes_from,omitempty" json:"volumes_from,omitempty"`
+	WorkingDir      string                           `mapstructure:"working_dir" yaml:"working_dir,omitempty" json:"working_dir,omitempty"`
+
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// GetDependencies retrieve all services this service depends on
+func (s ServiceConfig) GetDependencies() []string {
+	dependencies := make(set)
+	dependencies.append(s.DependsOn...)
+	dependencies.append(s.Links...)
+	if strings.HasPrefix(s.NetworkMode, "service:") {
+		dependencies.append(s.NetworkMode[8:])
+	}
+	return dependencies.toSlice()
+}
+
+type set map[string]struct{}
+
+func (s set) append(strings ...string) {
+	for _, str := range strings {
+		s[str] = struct{}{}
+	}
+}
+
+func (s set) toSlice() []string {
+	slice := make([]string, 0, len(s))
+	for v := range s {
+		slice = append(slice, v)
+	}
+	return slice
+}
+
+// BuildConfig is a type for build
+// using the same format at libcompose: https://github.com/docker/libcompose/blob/master/yaml/build.go#L12
+type BuildConfig struct {
+	Context    string            `yaml:",omitempty" json:"context,omitempty"`
+	Dockerfile string            `yaml:",omitempty" json:"dockerfile,omitempty"`
+	Args       MappingWithEquals `yaml:",omitempty" json:"args,omitempty"`
+	Labels     Labels            `yaml:",omitempty" json:"labels,omitempty"`
+	CacheFrom  StringList        `mapstructure:"cache_from" yaml:"cache_from,omitempty" json:"cache_from,omitempty"`
+	Network    string            `yaml:",omitempty" json:"network,omitempty"`
+	Target     string            `yaml:",omitempty" json:"target,omitempty"`
+
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// ShellCommand is a string or list of string args
+type ShellCommand []string
+
+// StringList is a type for fields that can be a string or list of strings
+type StringList []string
+
+// StringOrNumberList is a type for fields that can be a list of strings or
+// numbers
+type StringOrNumberList []string
+
+// MappingWithEquals is a mapping type that can be converted from a list of
+// key[=value] strings.
+// For the key with an empty value (`key=`), the mapped value is set to a pointer to `""`.
+// For the key without value (`key`), the mapped value is set to nil.
+type MappingWithEquals map[string]*string
+
+// OverrideBy update MappingWithEquals with values from another MappingWithEquals
+func (e MappingWithEquals) OverrideBy(other MappingWithEquals) MappingWithEquals {
+	for k, v := range other {
+		e[k] = v
+	}
+	return e
+}
+
+// Resolve update a MappingWithEquals for keys without value (`key`, but not `key=`)
+func (e MappingWithEquals) Resolve(lookupFn func(string) (string, bool)) MappingWithEquals {
+	for k, v := range e {
+		if v == nil || *v == "" {
+			if value, ok := lookupFn(k); ok {
+				e[k] = &value
+			}
+		}
+	}
+	return e
+}
+
+// RemoveEmpty excludes keys that are not associated with a value
+func (e MappingWithEquals) RemoveEmpty() MappingWithEquals {
+	for k, v := range e {
+		if v == nil {
+			delete(e, k)
+		}
+	}
+	return e
+}
+
+// Mapping is a mapping type that can be converted from a list of
+// key[=value] strings.
+// For the key with an empty value (`key=`), or key without value (`key`), the
+// mapped value is set to an empty string `""`.
+type Mapping map[string]string
+
+// Labels is a mapping type for labels
+type Labels map[string]string
+
+func (l Labels) Add(key, value string) Labels {
+	if l == nil {
+		l = Labels{}
+	}
+	l[key] = value
+	return l
+}
+
+// MappingWithColon is a mapping type that can be converted from a list of
+// 'key: value' strings
+type MappingWithColon map[string]string
+
+// HostsList is a list of colon-separated host-ip mappings
+type HostsList []string
+
+// LoggingConfig the logging configuration for a service
+type LoggingConfig struct {
+	Driver  string            `yaml:",omitempty" json:"driver,omitempty"`
+	Options map[string]string `yaml:",omitempty" json:"options,omitempty"`
+
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// DeployConfig the deployment configuration for a service
+type DeployConfig struct {
+	Mode           string         `yaml:",omitempty" json:"mode,omitempty"`
+	Replicas       *uint64        `yaml:",omitempty" json:"replicas,omitempty"`
+	Labels         Labels         `yaml:",omitempty" json:"labels,omitempty"`
+	UpdateConfig   *UpdateConfig  `mapstructure:"update_config" yaml:"update_config,omitempty" json:"update_config,omitempty"`
+	RollbackConfig *UpdateConfig  `mapstructure:"rollback_config" yaml:"rollback_config,omitempty" json:"rollback_config,omitempty"`
+	Resources      Resources      `yaml:",omitempty" json:"resources,omitempty"`
+	RestartPolicy  *RestartPolicy `mapstructure:"restart_policy" yaml:"restart_policy,omitempty" json:"restart_policy,omitempty"`
+	Placement      Placement      `yaml:",omitempty" json:"placement,omitempty"`
+	EndpointMode   string         `mapstructure:"endpoint_mode" yaml:"endpoint_mode,omitempty" json:"endpoint_mode,omitempty"`
+
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// HealthCheckConfig the healthcheck configuration for a service
+type HealthCheckConfig struct {
+	Test        HealthCheckTest `yaml:",omitempty" json:"test,omitempty"`
+	Timeout     *Duration       `yaml:",omitempty" json:"timeout,omitempty"`
+	Interval    *Duration       `yaml:",omitempty" json:"interval,omitempty"`
+	Retries     *uint64         `yaml:",omitempty" json:"retries,omitempty"`
+	StartPeriod *Duration       `mapstructure:"start_period" yaml:"start_period,omitempty" json:"start_period,omitempty"`
+	Disable     bool            `yaml:",omitempty" json:"disable,omitempty"`
+
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// HealthCheckTest is the command run to test the health of a service
+type HealthCheckTest []string
+
+// UpdateConfig the service update configuration
+type UpdateConfig struct {
+	Parallelism     *uint64  `yaml:",omitempty" json:"parallelism,omitempty"`
+	Delay           Duration `yaml:",omitempty" json:"delay,omitempty"`
+	FailureAction   string   `mapstructure:"failure_action" yaml:"failure_action,omitempty" json:"failure_action,omitempty"`
+	Monitor         Duration `yaml:",omitempty" json:"monitor,omitempty"`
+	MaxFailureRatio float32  `mapstructure:"max_failure_ratio" yaml:"max_failure_ratio,omitempty" json:"max_failure_ratio,omitempty"`
+	Order           string   `yaml:",omitempty" json:"order,omitempty"`
+
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// Resources the resource limits and reservations
+type Resources struct {
+	Limits       *Resource `yaml:",omitempty" json:"limits,omitempty"`
+	Reservations *Resource `yaml:",omitempty" json:"reservations,omitempty"`
+
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// Resource is a resource to be limited or reserved
+type Resource struct {
+	// TODO: types to convert from units and ratios
+	NanoCPUs         string            `mapstructure:"cpus" yaml:"cpus,omitempty" json:"cpus,omitempty"`
+	MemoryBytes      UnitBytes         `mapstructure:"memory" yaml:"memory,omitempty" json:"memory,omitempty"`
+	GenericResources []GenericResource `mapstructure:"generic_resources" yaml:"generic_resources,omitempty" json:"generic_resources,omitempty"`
+
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// GenericResource represents a "user defined" resource which can
+// only be an integer (e.g: SSD=3) for a service
+type GenericResource struct {
+	DiscreteResourceSpec *DiscreteGenericResource `mapstructure:"discrete_resource_spec" yaml:"discrete_resource_spec,omitempty" json:"discrete_resource_spec,omitempty"`
+
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// DiscreteGenericResource represents a "user defined" resource which is defined
+// as an integer
+// "Kind" is used to describe the Kind of a resource (e.g: "GPU", "FPGA", "SSD", ...)
+// Value is used to count the resource (SSD=5, HDD=3, ...)
+type DiscreteGenericResource struct {
+	Kind  string `json:"kind"`
+	Value int64  `json:"value"`
+
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// UnitBytes is the bytes type
+type UnitBytes int64
+
+// MarshalYAML makes UnitBytes implement yaml.Marshaller
+func (u UnitBytes) MarshalYAML() (interface{}, error) {
+	return fmt.Sprintf("%d", u), nil
+}
+
+// MarshalJSON makes UnitBytes implement json.Marshaler
+func (u UnitBytes) MarshalJSON() ([]byte, error) {
+	return []byte(fmt.Sprintf(`"%d"`, u)), nil
+}
+
+// RestartPolicy the service restart policy
+type RestartPolicy struct {
+	Condition   string    `yaml:",omitempty" json:"condition,omitempty"`
+	Delay       *Duration `yaml:",omitempty" json:"delay,omitempty"`
+	MaxAttempts *uint64   `mapstructure:"max_attempts" yaml:"max_attempts,omitempty" json:"max_attempts,omitempty"`
+	Window      *Duration `yaml:",omitempty" json:"window,omitempty"`
+
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// Placement constraints for the service
+type Placement struct {
+	Constraints []string               `yaml:",omitempty" json:"constraints,omitempty"`
+	Preferences []PlacementPreferences `yaml:",omitempty" json:"preferences,omitempty"`
+	MaxReplicas uint64                 `mapstructure:"max_replicas_per_node" yaml:"max_replicas_per_node,omitempty" json:"max_replicas_per_node,omitempty"`
+
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// PlacementPreferences is the preferences for a service placement
+type PlacementPreferences struct {
+	Spread string `yaml:",omitempty" json:"spread,omitempty"`
+
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// ServiceNetworkConfig is the network configuration for a service
+type ServiceNetworkConfig struct {
+	Aliases     []string `yaml:",omitempty" json:"aliases,omitempty"`
+	Ipv4Address string   `mapstructure:"ipv4_address" yaml:"ipv4_address,omitempty" json:"ipv4_address,omitempty"`
+	Ipv6Address string   `mapstructure:"ipv6_address" yaml:"ipv6_address,omitempty" json:"ipv6_address,omitempty"`
+
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// ServicePortConfig is the port configuration for a service
+type ServicePortConfig struct {
+	Mode      string `yaml:",omitempty" json:"mode,omitempty"`
+	HostIP    string `yaml:"-" json:"-"`
+	Target    uint32 `yaml:",omitempty" json:"target,omitempty"`
+	Published uint32 `yaml:",omitempty" json:"published,omitempty"`
+	Protocol  string `yaml:",omitempty" json:"protocol,omitempty"`
+
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// ParsePortConfig parse short syntax for service port configuration
+func ParsePortConfig(value string) ([]ServicePortConfig, error) {
+	var portConfigs []ServicePortConfig
+	ports, portBindings, err := nat.ParsePortSpecs([]string{value})
+	if err != nil {
+		return nil, err
+	}
+	// We need to sort the key of the ports to make sure it is consistent
+	keys := []string{}
+	for port := range ports {
+		keys = append(keys, string(port))
+	}
+	sort.Strings(keys)
+
+	for _, key := range keys {
+		port := nat.Port(key)
+		converted, err := convertPortToPortConfig(port, portBindings)
+		if err != nil {
+			return nil, err
+		}
+		portConfigs = append(portConfigs, converted...)
+	}
+	return portConfigs, nil
+}
+
+func convertPortToPortConfig(port nat.Port, portBindings map[nat.Port][]nat.PortBinding) ([]ServicePortConfig, error) {
+	portConfigs := []ServicePortConfig{}
+	for _, binding := range portBindings[port] {
+		startHostPort, endHostPort, err := nat.ParsePortRange(binding.HostPort)
+
+		if err != nil && binding.HostPort != "" {
+			return nil, fmt.Errorf("invalid hostport binding (%s) for port (%s)", binding.HostPort, port.Port())
+		}
+
+		for i := startHostPort; i <= endHostPort; i++ {
+			portConfigs = append(portConfigs, ServicePortConfig{
+				HostIP:    binding.HostIP,
+				Protocol:  strings.ToLower(port.Proto()),
+				Target:    uint32(port.Int()),
+				Published: uint32(i),
+				Mode:      "ingress",
+			})
+		}
+	}
+	return portConfigs, nil
+}
+
+// ServiceVolumeConfig are references to a volume used by a service
+type ServiceVolumeConfig struct {
+	Type        string               `yaml:",omitempty" json:"type,omitempty"`
+	Source      string               `yaml:",omitempty" json:"source,omitempty"`
+	Target      string               `yaml:",omitempty" json:"target,omitempty"`
+	ReadOnly    bool                 `mapstructure:"read_only" yaml:"read_only,omitempty" json:"read_only,omitempty"`
+	Consistency string               `yaml:",omitempty" json:"consistency,omitempty"`
+	Bind        *ServiceVolumeBind   `yaml:",omitempty" json:"bind,omitempty"`
+	Volume      *ServiceVolumeVolume `yaml:",omitempty" json:"volume,omitempty"`
+	Tmpfs       *ServiceVolumeTmpfs  `yaml:",omitempty" json:"tmpfs,omitempty"`
+
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+const (
+	// TypeBind is the type for mounting host dir
+	VolumeTypeBind = "bind"
+	// TypeVolume is the type for remote storage volumes
+	VolumeTypeVolume = "volume"
+	// TypeTmpfs is the type for mounting tmpfs
+	VolumeTypeTmpfs = "tmpfs"
+	// TypeNamedPipe is the type for mounting Windows named pipes
+	VolumeTypeNamedPipe = "npipe"
+)
+
+// ServiceVolumeBind are options for a service volume of type bind
+type ServiceVolumeBind struct {
+	Propagation string `yaml:",omitempty" json:"propagation,omitempty"`
+
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// Propagation represents the propagation of a mount.
+const (
+	// PropagationRPrivate RPRIVATE
+	PropagationRPrivate string = "rprivate"
+	// PropagationPrivate PRIVATE
+	PropagationPrivate string = "private"
+	// PropagationRShared RSHARED
+	PropagationRShared string = "rshared"
+	// PropagationShared SHARED
+	PropagationShared string = "shared"
+	// PropagationRSlave RSLAVE
+	PropagationRSlave string = "rslave"
+	// PropagationSlave SLAVE
+	PropagationSlave string = "slave"
+)
+
+// ServiceVolumeVolume are options for a service volume of type volume
+type ServiceVolumeVolume struct {
+	NoCopy bool `mapstructure:"nocopy" yaml:"nocopy,omitempty" json:"nocopy,omitempty"`
+
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// ServiceVolumeTmpfs are options for a service volume of type tmpfs
+type ServiceVolumeTmpfs struct {
+	Size int64 `yaml:",omitempty" json:"size,omitempty"`
+
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// FileReferenceConfig for a reference to a swarm file object
+type FileReferenceConfig struct {
+	Source string  `yaml:",omitempty" json:"source,omitempty"`
+	Target string  `yaml:",omitempty" json:"target,omitempty"`
+	UID    string  `yaml:",omitempty" json:"uid,omitempty"`
+	GID    string  `yaml:",omitempty" json:"gid,omitempty"`
+	Mode   *uint32 `yaml:",omitempty" json:"mode,omitempty"`
+
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// ServiceConfigObjConfig is the config obj configuration for a service
+type ServiceConfigObjConfig FileReferenceConfig
+
+// ServiceSecretConfig is the secret configuration for a service
+type ServiceSecretConfig FileReferenceConfig
+
+// UlimitsConfig the ulimit configuration
+type UlimitsConfig struct {
+	Single int `yaml:",omitempty" json:"single,omitempty"`
+	Soft   int `yaml:",omitempty" json:"soft,omitempty"`
+	Hard   int `yaml:",omitempty" json:"hard,omitempty"`
+
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// MarshalYAML makes UlimitsConfig implement yaml.Marshaller
+func (u *UlimitsConfig) MarshalYAML() (interface{}, error) {
+	if u.Single != 0 {
+		return u.Single, nil
+	}
+	return u, nil
+}
+
+// MarshalJSON makes UlimitsConfig implement json.Marshaller
+func (u *UlimitsConfig) MarshalJSON() ([]byte, error) {
+	if u.Single != 0 {
+		return json.Marshal(u.Single)
+	}
+	// Pass as a value to avoid re-entering this method and use the default implementation
+	return json.Marshal(*u)
+}
+
+// NetworkConfig for a network
+type NetworkConfig struct {
+	Name       string                 `yaml:",omitempty" json:"name,omitempty"`
+	Driver     string                 `yaml:",omitempty" json:"driver,omitempty"`
+	DriverOpts map[string]string      `mapstructure:"driver_opts" yaml:"driver_opts,omitempty" json:"driver_opts,omitempty"`
+	Ipam       IPAMConfig             `yaml:",omitempty" json:"ipam,omitempty"`
+	External   External               `yaml:",omitempty" json:"external,omitempty"`
+	Internal   bool                   `yaml:",omitempty" json:"internal,omitempty"`
+	Attachable bool                   `yaml:",omitempty" json:"attachable,omitempty"`
+	Labels     Labels                 `yaml:",omitempty" json:"labels,omitempty"`
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// IPAMConfig for a network
+type IPAMConfig struct {
+	Driver     string                 `yaml:",omitempty" json:"driver,omitempty"`
+	Config     []*IPAMPool            `yaml:",omitempty" json:"config,omitempty"`
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// IPAMPool for a network
+type IPAMPool struct {
+	Subnet     string                 `yaml:",omitempty" json:"subnet,omitempty"`
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// VolumeConfig for a volume
+type VolumeConfig struct {
+	Name       string                 `yaml:",omitempty" json:"name,omitempty"`
+	Driver     string                 `yaml:",omitempty" json:"driver,omitempty"`
+	DriverOpts map[string]string      `mapstructure:"driver_opts" yaml:"driver_opts,omitempty" json:"driver_opts,omitempty"`
+	External   External               `yaml:",omitempty" json:"external,omitempty"`
+	Labels     Labels                 `yaml:",omitempty" json:"labels,omitempty"`
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// External identifies a Volume or Network as a reference to a resource that is
+// not managed, and should already exist.
+// External.name is deprecated and replaced by Volume.name
+type External struct {
+	Name       string                 `yaml:",omitempty" json:"name,omitempty"`
+	External   bool                   `yaml:",omitempty" json:"external,omitempty"`
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// MarshalYAML makes External implement yaml.Marshaller
+func (e External) MarshalYAML() (interface{}, error) {
+	if e.Name == "" {
+		return e.External, nil
+	}
+	return External{Name: e.Name}, nil
+}
+
+// MarshalJSON makes External implement json.Marshaller
+func (e External) MarshalJSON() ([]byte, error) {
+	if e.Name == "" {
+		return []byte(fmt.Sprintf("%v", e.External)), nil
+	}
+	return []byte(fmt.Sprintf(`{"name": %q}`, e.Name)), nil
+}
+
+// CredentialSpecConfig for credential spec on Windows
+type CredentialSpecConfig struct {
+	Config     string                 `yaml:",omitempty" json:"config,omitempty"` // Config was added in API v1.40
+	File       string                 `yaml:",omitempty" json:"file,omitempty"`
+	Registry   string                 `yaml:",omitempty" json:"registry,omitempty"`
+	Extensions map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// FileObjectConfig is a config type for a file used by a service
+type FileObjectConfig struct {
+	Name           string                 `yaml:",omitempty" json:"name,omitempty"`
+	File           string                 `yaml:",omitempty" json:"file,omitempty"`
+	External       External               `yaml:",omitempty" json:"external,omitempty"`
+	Labels         Labels                 `yaml:",omitempty" json:"labels,omitempty"`
+	Driver         string                 `yaml:",omitempty" json:"driver,omitempty"`
+	DriverOpts     map[string]string      `mapstructure:"driver_opts" yaml:"driver_opts,omitempty" json:"driver_opts,omitempty"`
+	TemplateDriver string                 `mapstructure:"template_driver" yaml:"template_driver,omitempty" json:"template_driver,omitempty"`
+	Extensions     map[string]interface{} `yaml:",inline" json:"-"`
+}
+
+// SecretConfig for a secret
+type SecretConfig FileObjectConfig
+
+// ConfigObjConfig is the config for the swarm "Config" object
+type ConfigObjConfig FileObjectConfig

vendor/github.com/docker/cli/scripts/docs/generate-authors.sh

@@ -1,15 +0,0 @@
-#!/usr/bin/env bash
-set -e
-
-cd "$(dirname "$(readlink -f "${BASH_SOURCE[*]}")")/../.."
-
-# see also ".mailmap" for how email addresses and names are deduplicated
-
-{
-	cat <<-'EOH'
-	# This file lists all individuals having contributed content to the repository.
-	# For how it is generated, see `scripts/docs/generate-authors.sh`.
-	EOH
-	echo
-	git log --format='%aN <%aE>' | LC_ALL=C.UTF-8 sort -uf
-} > AUTHORS

vendor/github.com/docker/docker/contrib/syntax/vim/LICENSE

@@ -1,22 +0,0 @@
-Copyright (c) 2013 Honza Pokorny
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
-1. Redistributions of source code must retain the above copyright
-   notice, this list of conditions and the following disclaimer.
-2. Redistributions in binary form must reproduce the above copyright
-   notice, this list of conditions and the following disclaimer in the
-   documentation and/or other materials provided with the distribution.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
-ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/github.com/docker/docker/hack/generate-authors.sh

@@ -1,15 +0,0 @@
-#!/usr/bin/env bash
-set -e
-
-cd "$(dirname "$(readlink -f "$BASH_SOURCE")")/.."
-
-# see also ".mailmap" for how email addresses and names are deduplicated
-
-{
-	cat <<-'EOH'
-	# This file lists all individuals having contributed content to the repository.
-	# For how it is generated, see `hack/generate-authors.sh`.
-	EOH
-	echo
-	git log --format='%aN <%aE>' | LC_ALL=C.UTF-8 sort -uf
-} > AUTHORS

vendor/github.com/docker/docker/integration-cli/fixtures/https/ca.pem

@@ -1 +0,0 @@
-../../../integration/testdata/https/ca.pem

vendor/github.com/docker/docker/integration-cli/fixtures/https/client-cert.pem

@@ -1 +0,0 @@
-../../../integration/testdata/https/client-cert.pem

vendor/github.com/docker/docker/integration-cli/fixtures/https/client-key.pem

@@ -1 +0,0 @@
-../../../integration/testdata/https/client-key.pem

vendor/github.com/docker/docker/integration-cli/fixtures/https/server-cert.pem

@@ -1 +0,0 @@
-../../../integration/testdata/https/server-cert.pem

vendor/github.com/docker/docker/integration-cli/fixtures/https/server-key.pem

@@ -1 +0,0 @@
-../../../integration/testdata/https/server-key.pem