drone/.drone.yml

---
kind: pipeline
type: docker
name: check
trigger:
  event:
    - cron
  cron:
    - weekly-update-check

steps:
  - name: check
    image: docker:latest
    volumes:
      - name: docker-socket
        path: /var/run/docker.sock
    environment:
      DRONE_API_TOKEN:
        from_secret: drone_api_token
      REGISTRY_PWD:
        from_secret: registry_pwd
    commands:
      - apk add git curl jq
      - echo "Checking for new server version"
      # collect info from upstream repository
      - git clone https://github.com/drone/drone.git
      - cd drone
      - LATEST_VERSION=$(git tag --sort v:refname | grep '^v[0-9]\{1,\}\.[0-9]\{1,\}\.[0-9]\{1,\}$' | tail -n 1)
      - git checkout $LATEST_VERSION
      - COMMIT_HASH=$(git log -n 1 --pretty=%H)
      # collect info from current image
      - echo $REGISTRY_PWD | docker login -u drone --password-stdin registry.jfmonty2.com
      # defaults to 0 if image can't be found
      - docker pull registry.jfmonty2.com/drone-server:latest || true
      - IMAGE_COMMIT_HASH=$(docker image inspect -f '{{ .Config.Labels.drone_commit_hash }}' registry.jfmonty2.com/drone-server:latest || echo 0)
      # compare and trigger build if necessary
      - |
        if [[ $COMMIT_HASH != $IMAGE_COMMIT_HASH ]]; then
          echo -e '\033[1;33mUpdates available, triggering server build.\033[0m'
          echo "API token length:" $($drone_api_token | wc -c)
          curl -X POST -H "Authorization: Bearer $drone_api_token" \
          https://drone.jfmonty2.com/api/repos/jfmonty2/drone/builds/$DRONE_BUILD_NUMBER/promote?target=server-build
        else
          echo -e '\033[0;32mServer is already up to date.\033[0m'
        fi
      # now check for runner
      - echo "Checking for new runner version"
      - RELEASE=$(curl https://api.github.com/repos/drone-runners/drone-runner-exec/releases | jq -r '.[0]')
      - LATEST_VERSION=$(echo $RELEASE | jq -r '.tag_name')
      # get version of currently running instance (also defaults to 0 if not found)
      - docker pull registry.jfmonty2.com/drone-runner-exec:latest || true
      - CURRENT_VERSION=$(docker image inspect -f '{{ .Config.Labels.drone_runner_version }}' registry.jfmonty2.com/drone-runner-exec:latest || echo 0)
      # compare and trigger build if necessary
      - |
        if [[ $LATEST_VERSION != $CURRENT_VERSION ]]; then
          echo -e '\033[1;33mNew release available, triggering runner build.\033[0m'
          curl -X POST -H "Authorization: Bearer $drone_api_token" \
          https://drone.jfmonty2.com/api/repos/jfmonty2/drone/builds/$DRONE_BUILD_NUMBER/promote?target=runner-build
        else
          echo -e '\033[0;32mRunner is already up to date.\033[0m'
        fi

volumes:
  - name: docker-socket
    host:
      path: /var/run/docker.sock


---
kind: pipeline
type: docker
name: server

trigger:
  event:
    - promote
  target:
    - server-build

steps:
  - name: prepare
    image: docker:latest
    volumes:
      - name: docker-socket
        path: /var/run/docker.sock
    commands:
      - echo 'http://dl-cdn.alpinelinux.org/alpine/edge/community' >> /etc/apk/repositories
      - apk update
      - apk add git yq
      - git clone https://github.com/drone/drone.git
      - cd drone
      - LATEST_VERSION=$(git tag --sort v:refname | grep '^v[0-9]\{1,\}\.[0-9]\{1,\}\.[0-9]\{1,\}$' | tail -n 1)
      - git checkout $LATEST_VERSION
      - printf $(git log -n 1 --pretty=%H) > ../commit_hash # we'll need this for the docker build
      - GOLANG_IMG=$(yq eval 'select(documentIndex == 0) | .steps[0].image' .drone.yml)
      - docker pull $GOLANG_IMG
      - docker tag $GOLANG_IMG drone-builder:latest
      - docker image rm $GOLANG_IMG
  
  - name: compile
    image: drone-builder:latest
    pull: never
    environment:
      GOARCH: amd64
      GOOS: linux
    commands:
      - cd drone
      - >
        go build -ldflags "-extldflags \"-static\""
        -tags nolimit
        -o release/linux/amd64/drone-server
        github.com/drone/drone/cmd/drone-server

  - name: docker-build
    image: docker:latest
    volumes: 
      - name: docker-socket
        path: /var/run/docker.sock
    commands:
      - cd drone
      - rm .dockerignore
      - >
        docker build 
        -f docker/Dockerfile.server.linux.amd64
        -t registry.jfmonty2.com/drone-server:latest 
        --label drone_commit_hash=$(cat ../commit_hash)
        .

  - name: deploy
    image: docker:latest
    volumes:
      - name: docker-socket
        path: /var/run/docker.sock
    environment:
      REGISTRY_PWD: 
        from_secret: registry_pwd
    commands:
      - echo $REGISTRY_PWD | docker login -u drone --password-stdin registry.jfmonty2.com
      - docker push registry.jfmonty2.com/drone-server:latest

volumes:
  - name: docker-socket
    host:
      path: /var/run/docker.sock

---
kind: pipeline
type: docker
name: runner-exec

trigger: 
  event: 
    - promote
  target:
    - runner-build

steps:
  - name: docker-build
    image: docker:latest
    volumes:
      - name: docker-socket
        path: /var/run/docker.sock
    commands:
      # get version number
      - apk add curl jq
      - RUNNER_VERSION=$(curl https://api.github.com/repos/drone-runners/drone-runner-exec/releases | jq -r '.[0].tag_name')
      # get the binary
      - cd runner-exec
      - curl -L https://github.com/drone-runners/drone-runner-exec/releases/latest/download/drone_runner_exec_linux_amd64.tar.gz | tar xz
      - >
        docker build
        -t registry.jfmonty2.com/drone-runner-exec:latest 
        --label drone_runner_version=$RUNNER_VERSION
        .

  - name: deploy
    image: docker:latest
    volumes:
      - name: docker-socket
        path: /var/run/docker.sock
    environment:
      REGISTRY_PWD: 
        from_secret: registry_pwd
    commands:
      - echo $REGISTRY_PWD | docker login -u drone --password-stdin registry.jfmonty2.com
      - docker push registry.jfmonty2.com/drone-runner-exec:latest

volumes:
  - name: docker-socket
    host:
      path: /var/run/docker.sock