Use k3sup to determine client arch

* Set image suffix for OpenFaaS

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

Gopkg.lock

@@ -45,6 +45,14 @@
   revision = "961405ea754427780f2151adff607fa740d377f7"
   version = "0.3.0"
 
+[[projects]]
+  digest = "1:6076d857867a70e87dd1994407deb142f27436f1293b13e75cc053192d14eb0c"
+  name = "github.com/alexellis/k3sup"
+  packages = ["pkg/env"]
+  pruneopts = "UT"
+  revision = "f9a4adddc732742a9ee7962609408fb0999f2d7b"
+  version = "0.7.1"
+
 [[projects]]
   digest = "1:386ca0ac781cc1b630b3ed21725759770174140164b3faf3810e6ed6366a970b"
   name = "github.com/containerd/containerd"
@@ -449,6 +457,7 @@
   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",

Gopkg.toml

@@ -10,6 +10,9 @@
   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"

cmd/up.go

@@ -11,6 +11,7 @@ import (
 	"time"
 
 	"github.com/alexellis/faasd/pkg"
+	"github.com/alexellis/k3sup/pkg/env"
 	"github.com/spf13/cobra"
 )
 
@@ -22,7 +23,25 @@ var upCmd = &cobra.Command{
 
 func runUp(_ *cobra.Command, _ []string) error {
 
-	services := makeServiceDefinitions()
+	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 "arm64":
+		clientSuffix = clientArch
+		break
+	case "aarch64":
+		clientSuffix = "arm64"
+	}
+
+	services := makeServiceDefinitions(clientSuffix)
 
 	start := time.Now()
 	supervisor, err := pkg.NewSupervisor("/run/containerd/containerd.sock")
@@ -69,7 +88,7 @@ func runUp(_ *cobra.Command, _ []string) error {
 	return nil
 }
 
-func makeServiceDefinitions() []pkg.Service {
+func makeServiceDefinitions(archSuffix string) []pkg.Service {
 	wd, _ := os.Getwd()
 
 	return []pkg.Service{
@@ -104,7 +123,7 @@ func makeServiceDefinitions() []pkg.Service {
 				"faas_nats_address=nats",
 				"faas_nats_port=4222",
 			},
-			Image:  "docker.io/openfaas/gateway:0.18.7",
+			Image:  "docker.io/openfaas/gateway:0.18.7" + archSuffix,
 			Mounts: []pkg.Mount{},
 			Caps:   []string{"CAP_NET_RAW"},
 		},

vendor/github.com/alexellis/k3sup/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2019 Alex Ellis
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

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

@@ -0,0 +1,29 @@
+package env
+
+import (
+	"log"
+	"strings"
+
+	execute "github.com/alexellis/go-execute/pkg/v1"
+)
+
+// GetClientArch returns a pair of arch and os
+func GetClientArch() (string, string) {
+	task := execute.ExecTask{Command: "uname", Args: []string{"-m"}}
+	res, err := task.Execute()
+	if err != nil {
+		log.Println(err)
+	}
+
+	arch := strings.TrimSpace(res.Stdout)
+
+	taskOS := execute.ExecTask{Command: "uname", Args: []string{"-s"}}
+	resOS, errOS := taskOS.Execute()
+	if errOS != nil {
+		log.Println(errOS)
+	}
+
+	os := strings.TrimSpace(resOS.Stdout)
+
+	return arch, os
+}