Building and Testing

Compile and Test Your Own Traefik!

So you want to build your own Traefik binary from the sources? Let’s see how.

Building

You need either 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

Run make with the binary target. This will create binaries for the Linux platform in the dist folder.

In case when you run build on CI, you may probably want to run docker in non-interactive mode. To achieve that define DOCKER_NON_INTERACTIVE=true environment variable.

  1. $ make binary
  2. docker build -t traefik-webui -f webui/Dockerfile webui
  3. Sending build context to Docker daemon  2.686MB
  4. Step 1/11 : FROM node:8.15.0
  5.  ---> 1f6c34f7921c
  6. [...]
  7. Successfully built ce4ff439c06a
  8. Successfully tagged traefik-webui:latest
  9. [...]
  10. docker build  -t "traefik-dev:4475--feature-documentation" -f build.Dockerfile .
  11. Sending build context to Docker daemon    279MB
  12. Step 1/10 : FROM golang:1.16-alpine
  13.  ---> f4bfb3d22bda
  14. [...]
  15. Successfully built 5c3c1a911277
  16. Successfully tagged traefik-dev:4475--feature-documentation
  17. docker run  -e "TEST_CONTAINER=1" -v "/var/run/docker.sock:/var/run/docker.sock" -it -e OS_ARCH_ARG -e OS_PLATFORM_ARG -e TESTFLAGS -e VERBOSE -e VERSION -e CODENAME -e TESTDIRS -e CI -e CONTAINER=DOCKER      -v "/home/ldez/sources/go/src/github.com/traefik/traefik/"dist":/go/src/github.com/traefik/traefik/"dist"" "traefik-dev:4475--feature-documentation" ./script/make.sh generate binary
  18. ---> Making bundle: generate (in .)
  19. removed 'autogen/genstatic/gen.go'
  21. ---> Making bundle: binary (in .)
  23. $ ls dist/
  24. traefik*

The following targets can be executed outside Docker by setting the variable PRE_TARGET to an empty string (we don’t recommend that):

  • test-unit
  • test-integration
  • validate
  • binary (the webUI is still generated by using Docker)

ex:

  1. PRE_TARGET= make test-unit

Method 2: Using go

Requirements:

  • go v1.16+
  • environment variable GO111MODULE=on
  • go-bindata GO111MODULE=off go get -u github.com/containous/go-bindata/...

Source Directory

It is recommended that you clone Traefik into the ~/go/src/github.com/traefik/traefik directory. This is the official golang workspace hierarchy that will allow dependencies to be properly resolved.

Environment

Set your GOPATH and PATH variable to be set to ~/go via:

  1. export GOPATH=~/go
  2. export PATH=$PATH:$GOPATH/bin

For convenience, add GOPATH and PATH 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 an output similar to:

  1. GOARCH="amd64"
  2. GOBIN=""
  3. GOEXE=""
  4. GOHOSTARCH="amd64"
  5. GOHOSTOS="linux"
  6. GOOS="linux"
  7. GOPATH="/home/<yourusername>/go"
  8. GORACE=""
  9. ## ... and the list goes on

Build Traefik

Once you’ve set up your go environment and cloned the source repository, you can build Traefik.

Beforehand, you need to get go-bindata (the first time) in order to be able to use the go generate command (which is part of the build process).

  1. cd ~/go/src/github.com/traefik/traefik
  3. # Get go-bindata. (Important: the ellipses are required.)
  4. GO111MODULE=off go get github.com/containous/go-bindata/...
  1. # Generate UI static files
  2. rm -rf static/ autogen/; make generate-webui
  4. # required to merge non-code components into the final binary,
  5. # such as the web dashboard/UI
  6. go generate
  1. # Standard go build
  2. go build ./cmd/traefik

You will find the Traefik executable (traefik) in the ~/go/src/github.com/traefik/traefik directory.

Testing

Method 1: Docker and make

Run unit tests using the test-unit target. Run integration tests using the test-integration target. Run all tests (unit and integration) using the test target.

  1. $ make test-unit
  2. docker build -t "traefik-dev:your-feature-branch" -f build.Dockerfile .
  3. # […]
  4. docker run --rm -it -e OS_ARCH_ARG -e OS_PLATFORM_ARG -e TESTFLAGS -v "/home/user/go/src/github/traefik/traefik/dist:/go/src/github.com/traefik/traefik/dist" "traefik-dev:your-feature-branch" ./script/make.sh generate test-unit
  5. ---> Making bundle: generate (in .)
  6. removed 'gen.go'
  8. ---> Making bundle: test-unit (in .)
  9. + go test -cover -coverprofile=cover.out .
  10. ok      github.com/traefik/traefik   0.005s  coverage: 4.1% of statements
  12. Test success

For development purposes, you can specify which tests to run by using (only works the test-integration target):

  1. # Run every tests in the MyTest suite
  2. TESTFLAGS="-check.f MyTestSuite" make test-integration
  4. # Run the test "MyTest" in the MyTest suite
  5. TESTFLAGS="-check.f MyTestSuite.MyTest" make test-integration
  7. # Run every tests starting with "My", in the MyTest suite
  8. TESTFLAGS="-check.f MyTestSuite.My" make test-integration
  10. # Run every tests ending with "Test", in the MyTest suite
  11. 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 using $ go test ./... which should return ok, similar to:

  1. ok      _/home/user/go/src/github/traefik/traefik    0.004s

Integration tests must be run from the integration/ directory and require the -integration switch: $ cd integration && go test -integration ./....