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Using faas-cli new for function generation

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Signed-off-by: Jono Finger <jono@foodnotblogs.com>
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Jono Finger 2018-01-29 11:38:56 -08:00 committed by Alex Ellis
parent 78c8451df2
commit a024d4a6fb
1 changed files with 24 additions and 31 deletions
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55
guide/self_hosted_registry.md
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@ -45,74 +45,67 @@ Here we are using a basic local registry. You can deploy it elsewhere and use vo
This is a helper for using and deploying functions to OpenFaaS. This is a helper for using and deploying functions to OpenFaaS.
On a Mac if you're using brew then you can type in
```
$ brew install faas-cli
```
On Linux On Linux
``` ```
$ curl -sSL https://cli.openfaas.com | sh $ curl -sSL https://cli.openfaas.com | sh
``` ```
On a Mac if you're using brew then you can type in
```
$ brew install faas-cli
```
## Create a function ## Create a function
Generate function from a template
``` ```
$ mkdir -p ~/functions/hello-python $ mkdir functions && cd ~/functions
$ cd ~/functions $ faas-cli new hello-python --lang=python --gateway=http://localhost:8080
``` ```
*hello-python/handler.py* Update the print method in *hello-python/handler.py*
``` ```
import socket import socket
def handle(req): def handle(req):
print("Hello world from " + socket.gethostname()) print("Hello world from " + socket.gethostname())
``` ```
*stack.yml* Update the image in *hello-python.yml* to read
``` ```
provider: image: localhost:5000/hello-python
name: faas
gateway: http://localhost:8080
functions:
hello-python:
lang: python
handler: ./hello-python/
image: localhost:5000/faas-hello-python
``` ```
Let's build the function Let's build the function
``` ```
$ faas-cli build -f ./stack.yml $ faas-cli build -f hello-python.yml
``` ```
Upload the function to our registry Upload the function to our registry
``` ```
$ faas-cli push -f ./stack.yml $ faas-cli push -f hello-python.yml
``` ```
Check that the image made it to the registry Check that the image made it to the registry
``` ```
$ curl localhost:5000/v2/faas-hello-python/tags/list $ curl localhost:5000/v2/hello-python/tags/list
{"name":"faas-hello-python","tags":["latest"]} {"name":"hello-python","tags":["latest"]}
``` ```
Now we will delete the local image to be sure the deployment happens from the registry Now we will delete the local image to be sure the deployment happens from the registry
``` ```
$ docker rmi localhost:5000/faas-hello-python $ docker rmi localhost:5000/hello-python
$ docker images | grep hello | wc -l $ docker images | grep hello | wc -l
0 0
``` ```
Deploy the function from the registry Deploy the function from the registry
``` ```
$ faas-cli deploy -f ./stack.yml $ faas-cli deploy -f hello-python.yml
Deploying: hello-python. Deploying: hello-python.
No existing service to remove
Deployed. Deployed. 200 OK.
200 OK
URL: http://localhost:8080/function/hello-python URL: http://localhost:8080/function/hello-python
``` ```
@ -132,9 +125,9 @@ def handle(req):
``` ```
Now we can rebuild, push and deploy it to the swarm. Now we can rebuild, push and deploy it to the swarm.
``` ```
$ faas-cli build -f ./stack.yml && \ $ faas-cli build -f hello-python.yml && \
faas-cli push -f ./stack.yml && \ faas-cli push -f hello-python.yml && \
faas-cli deploy -f ./stack.yml faas-cli deploy -f hello-python.yml
``` ```
See that the update works See that the update works