Developer Guide

This document explains how to get started developing Brigade.

Brigade is composed of numerous parts:

This document covers development of brigade-controller, brigade-server, and brigade-worker.

Prerequisites

Clone the Repository In GOPATH

Follow these steps when cloning the brigade repository to use an existing GOPATH for your system:

export GOPATH=$(go env GOPATH) # GOPATH is set to $HOME/go by default
export PATH=$GOPATH/bin:$PATH # 'make bootstrap brig' will try to execute binnaries in $GOPATH/bin
mkdir -p $GOPATH/src/github.com/Azure
git clone https://github.com/Azure/brigade $GOPATH/src/github.com/Azure/brigade
cd $GOPATH/src/github.com/Azure/brigade

Note: this leaves you at the tip of master in the repository where active development is happening. You might prefer to checkout the most recent stable tag:

Building Source

To build all of the source, run this:

$ make bootstrap build

To build just the client binaries, run this:

$ make bootstrap brig

To build Docker images, run:

$ make docker-build

Minikube configuration

Start Minikube. Your addons should look like this:

$  minikube addons list
- default-storageclass: enabled
- kube-dns: enabled
- dashboard: disabled
- heapster: disabled
- ingress: enabled
- registry: disabled
- registry-creds: disabled
- addon-manager: enabled

Feel free to enable other addons, but the ones above are expected to be present for Brigade to operate.

For local development, you will want to point your Docker client to the Minikube Docker daemon:

$ eval $(minikube docker-env)

Running VERSION=latest make docker-build will push the Brigade images to the Minikube Docker daemon. You can verify this by running docker images. You should see the latest tags for the brigade images.

Now create a custom values.yaml file for the chart, and set the images to all pull the latest image:

$ helm inspect values ./charts/brigade > myvalues.yaml
$ open myvalues.yaml    # Change all `tag:` fields to be `tag: latest`

From here, you can install Brigade into Minikube using the Helm chart:

$ helm install -n brigade ./charts/brigade -f myvalues.yaml # if this command fails run `helm init`

Don’t forget to also create a project ($ helm install -n empty-testbed charts/brigade-project).

Running Brigade inside remote Kubernetes

Some developers use a remote Kubernetes instead of minikube.

To run a development version of Brigade inside of a remote Kubernetes, you will need to do two things:

Running Brigade (brigade-server) Locally (against Minikube)

Assuing you have Brigade installed (either on minikube or another cluster) and your $KUBECONFIG is pointing to that cluster, you can run brigade-controller locally.

$ ./bin/brigade-controller --kubeconfig $KUBECONFIG

(The default location for $KUBECONFIG on UNIX-like systems is $HOME/.kube.)

For the remainder of this document, we will assume that your local $KUBECONFIG is pointing to the correct cluster.

Running the Functional Tests

Once you have Brigade running in Minikube or a comparable alternative, you should be able to run the functional tests.

First, create a project that points to the deis/empty-testbed project. The most flexible way of doing this is via the ./charts/brigade-project Helm chart:

$ helm inspect ./charts/brigade-project > functional-test-project.yaml
$ # edit the functional-test-project.yaml file
$ helm install -f functional-test-project.yaml -n brigade-functional-tests ./charts/brigade-project

At the very least, you will want a config that looks like this:

```yamlproject: “deis/empty-testbed” project: deis/empty-testbed repository: “github.com/deis/empty-testbed” cloneURL: “https://github.com/deis/empty-testbed.git” namespace: “default”

It is possible to run the functional tests against a clone of the repo above,
but there's no need to. Basically we are testing GitHub connectivity and transactions
in these tests.

Once Helm installs the project, you can test it with `helm get brigade-functional-tests`.

With this setup, you should be able to run `make test-functional` and see the
tests run against your local Brigade binary.

## Running the Brigade-Worker Locally

You can run the Brigade worker locally by `cd`ing into `brigade-worker` and running
`k brigade`. Note that this will require you to set a number of environment
variables. See `brigade-worker/index.ts` for the list of variables you will need
to set.

Here is an example script for running a quick test against a locally running brigade worker.

#!/bin/bash

export BRIGADE_EVENT_TYPE=quicktest export BRIGADE_EVENT_PROVIDER=script export BRIGADE_COMMIT_REF=master export BRIGADE_PAYLOAD=’{}’ export BRIGADE_PROJECT_ID=brigade-830c16d4aaf6f5490937ad719afd8490a5bcbef064d397411043ac export BRIGADE_PROJECT_NAMESPACE=default export BRIGADE_SCRIPT=”$(pwd)/brigade.js”

cd ./brigade-worker echo “running $BRIGADE_EVENT_TYPE on $BRIGADE_SCRIPT for $BRIGADE_PROJECT_ID” yarn start ```

You may change the variables above to point to the desired project.