GIT - OpenFaas Connector

Trigger protected openfaas functions from github webhooks.

Architecture

The connector validates the secret send by github and invokes the function based on repo/function mapping in the environment variable

       +++++++++++++++++++++++++++++++++++++++++
       +                                       +
  git--+--> GitOpenFaaSConnector --> Function  +
       +                                       +
       +        (K8s/Openshift Namespace)      +
       +++++++++++++++++++++++++++++++++++++++++

Build code

• All the code is in git-faas.go file.
• Download dependencies

dep ensure

• Test

go test

• Build the code

CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o release/git-faas .

• Build image

docker build -t git-faas  .

Deploy connector

Following are the configuration options as environment variables

Key	Value	Default	Description
secret	token string	no default - mandatory field	the secret token to validate git webhooks
api	api prefix	http://gateway:8080/function/	api prefix path like http://gateway:8080/function/
git url	function	no default - mandatory field	please specify your git url as key and function name as the value
retry	number of retries	3	number of time function should be retried
timeout	Transport dialer time out	100s	timeout duration like 50s

Github Set Up

1. Go to Hooks sections of settings page in the git repo
2. Add webhook
3. Enter the payload url, secret specified in the deployment
4. Content type is application/json
5. Select the appropriate git events.

This connector can be used for any protected api, just mention the correct path in the api environment variable