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Contributing to the CLI

If you're looking to contribute to this project, there's a few things you should know.

First, make sure you go through the README.

Second, it's written in Go. If you are new to Go, we recommend the following resources:

Requirements

  • Go 1.10+
  • Make
  • ...

Getting setup

You should already have installed Go and setup your workspace.

This includes setting a valid $GOPATH.

1. Get the repo

$ go get -u github.com/CircleCI-Public/circleci-cli
$ cd $GOPATH/src/github.com/CircleCI-Public/circleci-cli

2. Build the binary

$ make

3. Run tests

$ make test

4. Cleaning up installed binary

If you ran go install at some point, you will have a development version of circleci-cli lingering around. You should clean this up with make clean.

$ which circleci-cli
/Users/erichu/go/bin/circleci-cli
$ make clean
$ which circleci-cli
$

Managing Dependencies

We use dep for vendoring our depencencies: https://github.com/golang/dep

If you want to update or modify any dependencies you will need to install it.

You can do so on MacOS:

$ brew install dep
$ brew upgrade dep

Or on Linux, etc:

$ curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh

To make sure dependencies are installed:

$ dep ensure

Linting your code

We use gometalinter for linting.

You can install it via $ make dev or manually with:

$ go get -u github.com/alecthomas/gometalinter
$ gometalinter --install

Then you can run it with $ make lint.

There is also a coverage job as part of the build which will lint any code you commit.

Editor support

Go has great tooling such as gofmt and goimports.

In particular, please be sure to gofmt your code before committing.

You can install goimport via:

$ go get golang.org/x/tools/cmd/goimports

The golang blog post "go fmt your code" has a lot more info gofmt. To get it setup with vim or emacs.

For example, I've the following in my .emacs.d/init.el:

(setq gofmt-command "goimports")
(require 'go-mode)
(add-hook 'before-save-hook 'gofmt-before-save)
(require 'go-rename)

Viewing API Documentation

You can view the documentation for this project in your browser using godoc.

After installing it via make dev.

  1. Run make doc.
  2. Access http://localhost:6060/pkg/github.com/CircleCI-Public/circleci-cli/