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DEVELOPMENT.md

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Development

This doc explains how to setup a development environment so you can get started contributing to Knative Eventing. Also take a look at the development workflow and the test docs.

Getting started

  1. Setup Knative Serving
  2. Create and checkout a repo fork

Once you meet these requirements, you can start the eventing-controller!

Before submitting a PR, see also CONTRIBUTING.md.

Requirements

You must have the core of Knative running on your cluster.

You must have ko installed.

Checkout your fork

The Go tools require that you clone the repository to the src/github.com/knative/eventing directory in your GOPATH.

To check out this repository:

  1. Create your own fork of this repo
  2. Clone it to your machine:
mkdir -p ${GOPATH}/src/github.com/knative
cd ${GOPATH}/src/github.com/knative
git clone git@github.com:${YOUR_GITHUB_USERNAME}/eventing.git
cd eventing
git remote add upstream git@github.com:knative/eventing.git
git remote set-url --push upstream no_push

Adding the upstream remote sets you up nicely for regularly syncing your fork.

Once you reach this point you are ready to do a full build and deploy as follows.

Starting Eventing Controller

Once you've setup your development environment, stand up Knative Eventing with:

ko apply -f config/

You can see things running with:

$ kubectl -n knative-eventing get pods
NAME                                   READY     STATUS    RESTARTS   AGE
eventing-controller-59f7969778-4dt7l   1/1       Running   0          2h

You can access the Eventing Controller's logs with:

kubectl -n knative-eventing logs $(kubectl -n knative-eventing get pods -l app=eventing-controller -o name)

Iterating

As you make changes to the code-base, there are two special cases to be aware of:

These are both idempotent, and we expect that running these at HEAD to have no diffs.

Once the codegen and dependency information is correct, redeploying the controller is simply:

ko apply -f config/controller.yaml

Or you can clean it up completely and start again.

Tests

Running tests as you make changes to the code-base is pretty simple. See the test docs.

Clean up

You can delete Knative Eventing with:

ko delete -f config/

Telemetry

See telemetry documentation.