# Contributing ## Building You need either [Docker](https://github.com/docker/docker) and `make` (Method 1), or `go` (Method 2) in order to build Traefik. For changes to its dependencies, the `dep` dependency management tool is required. ### Method 1: Using `Docker` and `Makefile` You need to run the `binary` target. This will create binaries for Linux platform in the `dist` folder. ```bash $ make binary docker build -t "traefik-dev:no-more-godep-ever" -f build.Dockerfile . Sending build context to Docker daemon 295.3 MB Step 0 : FROM golang:1.9-alpine ---> 8c6473912976 Step 1 : RUN go get github.com/golang/dep/cmd/dep [...] docker run --rm -v "/var/run/docker.sock:/var/run/docker.sock" -it -e OS_ARCH_ARG -e OS_PLATFORM_ARG -e TESTFLAGS -v "/home/user/go/src/github.com/containous/traefik/"dist":/go/src/github.com/containous/traefik/"dist"" "traefik-dev:no-more-godep-ever" ./script/make.sh generate binary ---> Making bundle: generate (in .) removed 'gen.go' ---> Making bundle: binary (in .) $ ls dist/ traefik* ``` ### Method 2: Using `go` ##### Setting up your `go` environment - You need `go` v1.9+ - It is recommended you clone Træfik into a directory like `~/go/src/github.com/containous/traefik` (This is the official golang workspace hierarchy, and will allow dependencies to resolve properly) - Set your `GOPATH` and `PATH` variable to be set to `~/go` via: ```bash export GOPATH=~/go export PATH=$PATH:$GOPATH/bin ``` > Note: You will want to add those 2 export lines to your `.bashrc` or `.bash_profile` - Verify your environment is setup properly by running `$ go env`. Depending on your OS and environment you should see output similar to: ```bash GOARCH="amd64" GOBIN="" GOEXE="" GOHOSTARCH="amd64" GOHOSTOS="linux" GOOS="linux" GOPATH="/home//go" GORACE="" ## more go env's will be listed ``` ##### Build Træfik Once your environment is set up and the Træfik repository cloned you can build Træfik. You need get `go-bindata` once to be able to use `go generate` command as part of the build. The steps to build are: ```bash cd ~/go/src/github.com/containous/traefik # Get go-bindata. Please note, the ellipses are required go get github.com/containous/go-bindata/... # Start build # generate # (required to merge non-code components into the final binary, such as the web dashboard and provider's Go templates) go generate # Standard go build go build ./cmd/traefik # run other commands like tests ``` You will find the Træfik executable in the `~/go/src/github.com/containous/traefik` folder as `traefik`. ### Updating the templates If you happen to update the provider templates (in `/templates`), you need to run `go generate` to update the `autogen` package. ### Setting up dependency management [dep](https://github.com/golang/dep) is not required for building; however, it is necessary to modify dependencies (i.e., add, update, or remove third-party packages) You need to use [dep](https://github.com/golang/dep) >= O.4.1. If you want to add a dependency, use `dep ensure -add` to have [dep](https://github.com/golang/dep) put it into the vendor folder and update the dep manifest/lock files (`Gopkg.toml` and `Gopkg.lock`, respectively). A following `make dep-prune` run should be triggered to trim down the size of the vendor folder. The final result must be committed into VCS. Here's a full example using dep to add a new dependency: ```bash # install the new main dependency github.com/foo/bar and minimize vendor size $ dep ensure -add github.com/foo/bar # generate (Only required to integrate other components such as web dashboard) $ go generate # Standard go build $ go build ./cmd/traefik # run other commands like tests ``` ### Tests #### Method 1: `Docker` and `make` You can run unit tests using the `test-unit` target and the integration test using the `test-integration` target. ```bash $ make test-unit docker build -t "traefik-dev:your-feature-branch" -f build.Dockerfile . # […] docker run --rm -it -e OS_ARCH_ARG -e OS_PLATFORM_ARG -e TESTFLAGS -v "/home/user/go/src/github/containous/traefik/dist:/go/src/github.com/containous/traefik/dist" "traefik-dev:your-feature-branch" ./script/make.sh generate test-unit ---> Making bundle: generate (in .) removed 'gen.go' ---> Making bundle: test-unit (in .) + go test -cover -coverprofile=cover.out . ok github.com/containous/traefik 0.005s coverage: 4.1% of statements Test success ``` For development purposes, you can specify which tests to run by using: ```bash # Run every tests in the MyTest suite TESTFLAGS="-check.f MyTestSuite" make test-integration # Run the test "MyTest" in the MyTest suite TESTFLAGS="-check.f MyTestSuite.MyTest" make test-integration # Run every tests starting with "My", in the MyTest suite TESTFLAGS="-check.f MyTestSuite.My" make test-integration # Run every tests ending with "Test", in the MyTest suite TESTFLAGS="-check.f MyTestSuite.*Test" make test-integration ``` More: https://labix.org/gocheck #### Method 2: `go` Unit tests can be run from the cloned directory by `$ go test ./...` which should return `ok` similar to: ``` ok _/home/user/go/src/github/containous/traefik 0.004s ``` Integration tests must be run from the `integration/` directory and require the `-integration` switch to be passed like this: `$ cd integration && go test -integration ./...`. ## Documentation The [documentation site](http://docs.traefik.io/) is built with [mkdocs](http://mkdocs.org/) ### Method 1: `Docker` and `make` You can test documentation using the `docs` target. ```bash $ make docs docker build -t traefik-docs -f docs.Dockerfile . # […] docker run --rm -v /home/user/go/github/containous/traefik:/mkdocs -p 8000:8000 traefik-docs mkdocs serve # […] [I 170828 20:47:48 server:283] Serving on http://0.0.0.0:8000 [I 170828 20:47:48 handlers:60] Start watching changes [I 170828 20:47:48 handlers:62] Start detecting changes ``` And go to [http://127.0.0.1:8000](http://127.0.0.1:8000). ### Method 2: `mkdocs` First make sure you have python and pip installed ```shell $ python --version Python 2.7.2 $ pip --version pip 1.5.2 ``` Then install mkdocs with pip ```shell pip install --user -r requirements.txt ``` To test documentation locally run `mkdocs serve` in the root directory, this should start a server locally to preview your changes. ```shell $ mkdocs serve INFO - Building documentation... WARNING - Config value: 'theme'. Warning: The theme 'united' will be removed in an upcoming MkDocs release. See http://www.mkdocs.org/about/release-notes/ for more details INFO - Cleaning site directory [I 160505 22:31:24 server:281] Serving on http://127.0.0.1:8000 [I 160505 22:31:24 handlers:59] Start watching changes [I 160505 22:31:24 handlers:61] Start detecting changes ``` ## How to Write a Good Issue Please keep in mind that the GitHub issue tracker is not intended as a general support forum, but for reporting bugs and feature requests. For end-user related support questions, refer to one of the following: - the Traefik community Slack channel: [![Join the chat at https://traefik.herokuapp.com](https://img.shields.io/badge/style-register-green.svg?style=social&label=Slack)](https://traefik.herokuapp.com) - [Stack Overflow](https://stackoverflow.com/questions/tagged/traefik) (using the `traefik` tag) ### Title The title must be short and descriptive. (~60 characters) ### Description - Respect the issue template as much as possible. [template](.github/ISSUE_TEMPLATE.md) - If it's possible use the command `traefik bug`. See https://www.youtube.com/watch?v=Lyz62L8m93I. - Explain the conditions which led you to write this issue: the context. - The context should lead to something, an idea or a problem that you’re facing. - Remain clear and concise. - Format your messages to help the reader focus on what matters and understand the structure of your message, use [Markdown syntax](https://help.github.com/articles/github-flavored-markdown) ## How to Write a Good Pull Request ### Title The title must be short and descriptive. (~60 characters) ### Description - Respect the pull request template as much as possible. [template](.github/PULL_REQUEST_TEMPLATE.md) - Explain the conditions which led you to write this PR: the context. - The context should lead to something, an idea or a problem that you’re facing. - Remain clear and concise. - Format your messages to help the reader focus on what matters and understand the structure of your message, use [Markdown syntax](https://help.github.com/articles/github-flavored-markdown) ### Content - Make it small. - Do only one thing. - Write useful descriptions and titles. - Avoid re-formatting. - Make sure the code builds. - Make sure all tests pass. - Add tests. - Address review comments in terms of additional commits. - Do not amend/squash existing ones unless the PR is trivial. - If a PR involves changes to third-party dependencies, the commits pertaining to the vendor folder and the manifest/lock file(s) should be committed separated. Read [10 tips for better pull requests](http://blog.ploeh.dk/2015/01/15/10-tips-for-better-pull-requests/).