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CONTRIBUTING.md

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Contributing

Building

You need either Docker and make (Method 1), or go and glide (Method 2) in order to build traefik.

Method 1: Using Docker and Makefile

You need to run the binary target. This will create binaries for Linux platform in the dist folder.

$ 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:1.7
 ---> 8c6473912976
Step 1 : RUN go get github.com/Masterminds/glide
[...]
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/emile/dev/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 and glide

Setting up your go environment
  • You need go v1.7+
  • It is recommended you clone Træfɪk into a directory like ~/go/src/github.com/containous/traefik (This is the official golang workspace hierarchy, and will allow dependencies to resolve properly)
  • This will allow your GOPATH and PATH variable to be set to ~/go via:
$ export GOPATH=~/go
$ export PATH=$PATH:$GOPATH/bin

This can be verified via $ go env

  • You will want to add those 2 export lines to your .bashrc or .bash_profile
  • You need go-bindata to be able to use go generate command (needed to build) : $ go get github.com/jteeuwen/go-bindata/... (Please note, the ellipses are required)
Setting up your glide environment
  • Glide can be installed either via homebrew: $ brew install glide or via the official glide script: $ curl https://glide.sh/get | sh

The idea behind glide is the following :

  • when checkout(ing) a project, run $ glide install from the cloned directory to install (go get …) the dependencies in your GOPATH.
  • if you need another dependency, import and use it in the source, and run $ glide get github.com/Masterminds/cookoo to save it in vendor and add it to your glide.yaml.
$ glide install
# generate (Only required to integrate other components such as web dashboard)
$ go generate
# Standard go build
$ go build
# Using gox to build multiple platform
$ gox "linux darwin" "386 amd64 arm" \
    -output="dist/traefik_{{.OS}}-{{.Arch}}"
# 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.

$ 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/vincent/src/github/vdemeester/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:

# 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 and glide
  • Tests can be run from the cloned directory, by $ go test ./... which should return ok similar to:
ok      _/home/vincent/src/github/vdemeester/traefik    0.004s
  • Note that $ go test ./... will run all tests (including the ones in the vendor directory for the dependencies that glide have fetched). If you only want to run the tests for traefik use $ go test $(glide novendor) instead.

Documentation

The documentation site is built with mkdocs

First make sure you have python and pip installed

$ python --version
Python 2.7.2
$ pip --version
pip 1.5.2

Then install mkdocs with pip

$ pip install mkdocs

To test documentation locally run mkdocs serve in the root directory, this should start a server locally to preview your changes.

$ 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