image: golang:1.8.3

# The problem is that to be able to use go get, one needs to put
# the repository in the $GOPATH. So for example if your gitlab domain
# is mydomainperso.com, and that your repository is repos/projectname, and
# the default GOPATH being /go, then you'd need to have your
# repository in /go/src/mydomainperso.com/repos/projectname
# Thus, making a symbolic link corrects this.
before_script:
    - mkdir -p /go/src/gitlab.zerbytes.net/${CI_PROJECT_NAMESPACE}
    - ln -sf ${CI_PROJECT_DIR} /go/src/gitlab.zerbytes.net/${CI_PROJECT_PATH}
    - cd /go/src/gitlab.zerbytes.net/${CI_PROJECT_PATH}/

stages:
    - test
    - build
    - release
    - deploy

test:
    stage: test
    script:
        - go get -u github.com/kardianos/govendor
        - /go/bin/govendor test +local

compile:
    stage: build
    script:
        # Add here all the dependencies, or use glide/govendor/...
        # to get them automatically.
        # Better put this in a Makefile
        - go build -race -ldflags "-X gitlab.zerbytes.net/${CI_PROJECT_PATH}/vendor/github.com/prometheus/common/version.Version=1.0.2 -X gitlab.zerbytes.net/${CI_PROJECT_PATH}/vendor/github.com/prometheus/common/version.Revision=${CI_COMMIT_SHA} -X gitlab.zerbytes.net/${CI_PROJECT_PATH}/vendor/github.com/prometheus/common/version.Branch=${CI_COMMIT_REF_NAME} -X gitlab.zerbytes.net/${CI_PROJECT_PATH}/vendor/github.com/prometheus/common/version.BuildUser=$(whoami)@$(hostname) -X gitlab.zerbytes.net/${CI_PROJECT_PATH}/vendor/github.com/prometheus/common/version.BuildDate=$(date +%Y%m%d-%H:%M:%S) -extldflags '-static'" -o app
    artifacts:
        paths:
            - app

# TODO Add release upload to S3 storage

image_build:
    stage: release
    image: docker:latest
    variables:
        DOCKER_HOST: tcp://localhost:2375
    services:
        - docker:dind
    script:
        - docker info
        - docker login -u gitlab-ci-token -p ${CI_JOB_TOKEN} registry.zerbytes.net
        - docker build -t registry.zerbytes.net/${CI_PROJECT_PATH}:latest .
        - docker tag registry.zerbytes.net/${CI_PROJECT_PATH}:latest registry.zerbytes.net/${CI_PROJECT_PATH}:${CI_COMMIT_REF_NAME}
        - test ! -z "${CI_COMMIT_TAG}" && docker push registry.zerbytes.net/${CI_PROJECT_PATH}:latest
        - docker push registry.zerbytes.net/${CI_PROJECT_PATH}:${CI_COMMIT_REF_NAME}

deploy_dev:
    image: registry.gitlab.com/gitlab-examples/kubernetes-deploy
    stage: deploy
    environment:
        name: dev
        url: https://dev-presentation-gitlab-k8s.zerbytes.net
    script:
        - echo "${KUBE_CA_PEM}" > kube_ca.pem
        - kubectl config set-cluster default-cluster --server=${KUBE_URL} --certificate-authority="$(pwd)/kube_ca.pem"
        - kubectl config set-credentials default-admin --token=${KUBE_TOKEN}
        - kubectl config set-context default-system --cluster=default-cluster --user=default-admin --namespace ${KUBE_NAMESPACE}
        - kubectl config use-context default-system
        - sed -i "s/__CI_ENVIRONMENT_SLUG__/${CI_ENVIRONMENT_SLUG}/" deployment.yaml ingress.yaml service.yaml
        - sed -i "s/__VERSION__/${CI_COMMIT_REF_NAME}/" deployment.yaml ingress.yaml service.yaml
        - kubectl cluster-info
        - kubectl get deployments -l app=${CI_ENVIRONMENT_SLUG}
        - kubectl create -f deployment.yaml || (kubectl delete -f deployment.yaml && kubectl create -f deployment.yaml)
        - kubectl create -f service.yaml || true
        - kubectl create -f ingress.yaml || kubectl replace -f ingress.yaml

deploy_live:
    image: registry.gitlab.com/gitlab-examples/kubernetes-deploy
    stage: deploy
    environment:
        name: live
        url: https://live-presentation-gitlab-k8s.zerbytes.net
    only:
        - tags
    when: manual
    script:
        - echo "${KUBE_CA_PEM}" > kube_ca.pem
        - kubectl config set-cluster default-cluster --server=${KUBE_URL} --certificate-authority="$(pwd)/kube_ca.pem"
        - kubectl config set-credentials default-admin --token=${KUBE_TOKEN}
        - kubectl config set-context default-system --cluster=default-cluster --user=default-admin --namespace ${KUBE_NAMESPACE}
        - kubectl config use-context default-system
        - sed -i "s/__CI_ENVIRONMENT_SLUG__/${CI_ENVIRONMENT_SLUG}/" deployment.yaml ingress.yaml service.yaml
        - sed -i "s/__VERSION__/${CI_COMMIT_REF_NAME}/" deployment.yaml ingress.yaml service.yaml
        - kubectl cluster-info
        - kubectl get deployments -l app=${CI_ENVIRONMENT_SLUG}
        - kubectl create -f deployment.yaml || kubectl replace -f deployment.yaml
        - kubectl create -f service.yaml || true
        - kubectl create -f ingress.yaml || kubectl replace -f ingress.yaml