language: go

go:
  - 1.3
#  - 1.4
# see https://github.com/moovweb/gvm/pull/116 for why Go 1.4 is currently disabled

# https://github.com/docker/libcontainer/blob/e9f44b52de03138d9273eadd5a87a0cea11b4f5d/.travis.yml

# this section defines the majority of our "build matrix"
# see http://docs.travis-ci.com/user/build-configuration/#The-Build-Matrix
env:
  - TRAVIS_GLOBAL_WTF=1 # since we don't want to re-run dco/gofmt checks for every single GOOS/GOARCH combination, we artificially create a separate build matrix cell here where those checks will be run (see the TRAVIS_GLOBAL_WTF checks in the script commands below)
  - _GOOS=linux _GOARCH=amd64
  - _GOOS=linux _GOARCH=386
  - _GOOS=linux _GOARCH=arm
  - _GOOS=darwin _GOARCH=amd64
  - _GOOS=darwin _GOARCH=386
  - _GOOS=windows _GOARCH=amd64
  - _GOOS=windows _GOARCH=386

# let us have speedy Docker-based Travis workers
sudo: false

install:
  # setup our current repo as "github.com/docker/swarm" in the GOPATH
  - mkdir -pv "${GOPATH%%:*}/src/github.com/docker"
    && [ -d "${GOPATH%%:*}/src/github.com/docker/swarm" ]
    || ln -sv "$(pwd -P)" "${GOPATH%%:*}/src/github.com/docker/swarm"
  # grab the files from docker/docker that do DCO/gofmt checking (and make the minor adjustments necessary to make them do docker/swarm)
  - if [ "$TRAVIS_GLOBAL_WTF" ]; then
      export DOCKER_PATH="${GOPATH%%:*}/src/github.com/docker/docker";
      mkdir -pv "$DOCKER_PATH/project/make";
      ( cd "$DOCKER_PATH/project/make" && wget -c 'https://raw.githubusercontent.com/docker/docker/master/project/make/'{.validate,validate-dco,validate-gofmt} );
      sed -i 's!docker/docker!docker/swarm!' "$DOCKER_PATH/project/make/.validate";
    fi
  # cross-compile the Go toolchain for the GOOS/GOARCH combo we're testing
  - if [ -z "$TRAVIS_GLOBAL_WTF" ]; then
      gvm cross "$_GOOS" "$_GOARCH";
      export GOOS="$_GOOS" GOARCH="$_GOARCH";
    fi
  # snag any external Go dependencies
  - if [ -z "$TRAVIS_GLOBAL_WTF" ]; then
      go get -t -v ./...;
    fi
  # add some debugging output that's super helpful when adapting the Travis scripts (so that which environment variables are available in the exact situation being debugged can be seen easily, with real-life examples)
  - env | sort
  - go env

script:
 - if [ "$TRAVIS_GLOBAL_WTF" ]; then
     bash "$DOCKER_PATH/project/make/validate-dco";
   fi
 # check gofmt, but only on Go 1.3
 - if [[ "$TRAVIS_GLOBAL_WTF" && "$TRAVIS_GO_VERSION" == go1.3* ]]; then
     bash "$DOCKER_PATH/project/make/validate-gofmt";
   fi
 # when we're on the native GOHOSTOS/GOHOSTARCH, the test suite will run as-is, but for all other platforms, we only want to test compilation
 - if [ -z "$TRAVIS_GLOBAL_WTF" ]; then
     case "$(go env GOOS)/$(go env GOARCH)" in
       $(go env GOHOSTOS)/$(go env GOHOSTARCH))
         go test -v ./...;
         ;;
       *)
         go build -v;
         ;;
     esac
   fi