webhooks-publisher

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Published: Dec 6, 2016 License: Apache-2.0 Imports: 15 Imported by: 0

README

Webhooks-publisher is a Kubernetes deployment used to receive Github webhooks. It changes the format and pushes it inside a Pub/Sub queue so that they can be later processed by the mungebot.

Deploy

Deploying, updating configmap:

# Create container and push it to google-containers
make push

# Make sure you update the config version
kubectl create configmap webhook-config-v10 --from-file=config.yaml

# Edit deployment with new container name and/or config version

kubectl apply -f deployment.yaml

How to use

config.yaml contains the configuration:

  • project is the Google Cloud project-id that has the PubSub queue (see permissions below)
  • Each item in paths is the path it listens to webhooks and maps to the Github secret and the PubSub topic where it should publish

If you want to listen to a repository:

  • Add the path for the new webhook: /my-repo
  • Give it the github secret you configured for that repo/webhook (https://developer.github.com/webhooks/creating/#setting-up-a-webhook)
  • Create a new topic in project to receive the events, and put it in the config file
  • Create as many subscription for the topic as you need, and consume messages from there (refer to Google Cloud PubSub documentation if needed)

Message format

The format of the messages pushed in the queue is simple. The signature has already been validated so you don't need to do that again.

{
    "type": "For example: `push`, as received from X-Github-Event header.",
    "payload": "Complete body/event message as sent by Github. This is JSON in a string."
}

Permissions

In order to push/pull events into/from the PubSub, you need a "Service Account" key. It needs Project Editor role.

It is set-up for the publisher as a secret key named webhooks-publisher-secret:

kubectl create secret generic webhooks-publisher-secret --from-file=credential.json=your-service-account.json

Documentation

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