image: ruby:2.5

stages:
  - build-images
  - build
  - test
  - pre-deploy
  - deploy
  - post-deploy

#
# Pick the remote branch, by default master (see the Rakefile for more info)
#
variables:
  BRANCH_CE: 'master'
  BRANCH_EE: 'master'
  BRANCH_OMNIBUS: 'master'
  BRANCH_RUNNER: 'master'

#
# Check Ruby version and install gems
#
before_script:
  - ruby -v
  - bundle install --jobs 4 --path vendor

# Skip this job when it's invoked by a cross project pipeline. That will speed
# up the pipeline when a docs preview is triggered. The triggered pipeline is
# always a branch off master which should be green anyway. For more info:
# https://docs.gitlab.com/ee/development/writing_documentation.html#previewing-the-changes-live
.except_pipelines: &except_pipelines
  except:
    - pipelines
#
# Except stable branches (with names like '10.4', '11.2', etc.)
#
.except_stable: &except_stable
  except:
    - /^\d{1,2}\.\d{1,2}$/

#
# Retry a job automatically if it fails (2 times)
#
.retry: &retry
  retry: 2

#
# Tags
#
.tags: &tags
  tags:
    - docker
    - gitlab-org

###############################################
#             Build the website               #
###############################################

.build_base: &build_base
  stage: build
  script:
    - bundle exec rake setup_git default
    - bundle exec nanoc compile -VV
  artifacts:
    paths:
      - public
    expire_in: 1w
  cache:
    key: "$CI_JOB_NAME-$CI_COMMIT_REF_NAME"
    paths:
      - tmp/
      - vendor/ruby
  <<: *retry
  <<: *tags

#
# Compile only on master and stable branches
#
compile_prod:
  <<: *build_base
  variables:
    NANOC_ENV: 'production'
  only:
    - master
    - /^\d{1,2}\.\d{1,2}$/

#
# Compile on all branches except master
#
compile_dev:
  <<: *build_base
  only:
    - branches
  except:
    - master
    - /^\d{1,2}\.\d{1,2}$/

###############################################
#              Test the website               #
###############################################

#
# Check for 404s in internal links
#
internal_links:
  stage: test
  script:
    - bundle exec nanoc check internal_links
  allow_failure: true
  cache:
    key: "test-$CI_COMMIT_REF_NAME"
    paths:
      - vendor/ruby
  <<: *except_pipelines
  <<: *retry
  <<: *tags

#
# SCSS linting
#
scss_lint:
  stage: test
  script:
    - bundle exec scss-lint
  cache:
    key: "test-$CI_COMMIT_REF_NAME"
    paths:
      - vendor/ruby
  <<: *except_pipelines
  <<: *retry
  <<: *tags

###############################################
#               Review Apps                   #
###############################################

#
# Deploy the Review App on a dev server
#
review:
  stage: deploy
  variables:
    GIT_STRATEGY: none
  dependencies:
    - compile_dev
  before_script: []
  cache: {}
  script:
    - echo $CI_ENVIRONMENT_URL > environment_url.txt
    - rsync -av --delete public /srv/nginx/pages/$CI_COMMIT_REF_SLUG
  environment:
    name: review/$CI_COMMIT_REF_SLUG
    url: http://$CI_COMMIT_REF_SLUG.$APPS_DOMAIN
    on_stop: review_stop
  artifacts:
    paths:
    - environment_url.txt
  only:
    - branches@gitlab-com/gitlab-docs
  # Except master and stable branches
  except:
    - master
    - /^\d{1,2}\.\d{1,2}$/
  tags:
    - nginx
    - review-apps
  <<: *retry

#
# Stop the Review App
#
review_stop:
  stage: deploy
  variables:
    GIT_STRATEGY: none
  dependencies: []
  artifacts: {}
  before_script: []
  cache: {}
  script:
    - rm -rf public /srv/nginx/pages/$CI_COMMIT_REF_SLUG
  when: manual
  environment:
    name: review/$CI_COMMIT_REF_SLUG
    action: stop
  only:
    - branches@gitlab-com/gitlab-docs
  # Except master and stable branches
  except:
    - master
    - /^\d{1,2}\.\d{1,2}$/
  tags:
    - nginx
    - review-apps
  <<: *retry

###############################################
#          GitLab Pages (production)          #
###############################################

#
# Deploy to production with GitLab Pages
#
pages:
  image: registry.gitlab.com/gitlab-com/gitlab-docs:latest
  stage: deploy
  variables:
    GIT_STRATEGY: none
  before_script: []
  cache: {}
  environment:
    name: production
    url: https://docs.gitlab.com
  dependencies:
    - compile_prod    # Contains the public directory
  script:
    # Use the URL in the browser performance testing below
    - echo $CI_ENVIRONMENT_URL > environment_url.txt
    # Move the already built versions to the public directory.
    # We want to use the artifacts of the compile_prod job as
    # the latest docs deployment, and the other versions are
    # taken from /usr/share/nginx/html which are included in
    # the image we pull from.
    - mv public latest
    - mv /usr/share/nginx/html public
    - cp -a latest/* public/
    # Symlink all README.html to index.html so that we can have clean URLs
    - for i in `find public -name README.html`; do ln -sf README.html $(dirname $i)/index.html; done
  artifacts:
    paths:
    - public
    - environment_url.txt
    expire_in: 1d
  only:
    - master@gitlab-com/gitlab-docs
  <<: *retry
  <<: *tags

###############################################
#           Performance testing               #
###############################################

performance:
  stage: post-deploy
  image: docker:git
  services:
    - docker:dind
  before_script: []
  cache: {}
  script:
    - export CI_ENVIRONMENT_URL=$(cat environment_url.txt)
    - mkdir gitlab-exporter
    - wget -O ./gitlab-exporter/index.js https://gitlab.com/gitlab-org/gl-performance/raw/master/index.js
    - mkdir sitespeed-results
    - docker run --shm-size=1g --rm -v "$(pwd)":/sitespeed.io sitespeedio/sitespeed.io:6.3.1 --plugins.add ./gitlab-exporter --outputFolder sitespeed-results "$CI_ENVIRONMENT_URL"
    - mv sitespeed-results/data/performance.json performance.json
  artifacts:
    paths:
      - performance.json
      - sitespeed-results/
    expire_in: 1w
  only:
    - branches
  except:
    - /^\d{1,2}\.\d{1,2}$/
    - pipelines
  <<: *retry
  <<: *tags

###############################################
#           Docker images builds              #
###############################################

#
# Reuse some common commands
#
.docker_prepare: &docker_prepare
  image: docker:latest
  services:
    - docker:dind
  before_script:
    - docker info
    - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN $CI_REGISTRY
  <<: *retry
  <<: *tags

#
# Helper Docker image containing all build dependencies
# It must be rebuilt every time Gemfile.lock changes
#
image:bootstrap:
  <<: *docker_prepare
  stage: build-images
  variables:
    IMAGE_NAME: $CI_REGISTRY_IMAGE:bootstrap
    DOCKERFILE: dockerfiles/Dockerfile.bootstrap
  script:
    - docker build -t $IMAGE_NAME -f $DOCKERFILE .
    - docker push $IMAGE_NAME
  when: manual
  <<: *except_stable

#
# Helper Docker image that builds the gitlab-docs website
#
image:builder-onbuild:
  <<: *docker_prepare
  stage: build-images
  variables:
    IMAGE_NAME: $CI_REGISTRY_IMAGE:builder-onbuild
    DOCKERFILE: dockerfiles/Dockerfile.builder.onbuild
  script:
    - docker build -t $IMAGE_NAME -f $DOCKERFILE .
    - docker push $IMAGE_NAME
  when: manual
  <<: *except_stable

#
# Helper Docker image that copies the final HTML files in a smaller image
# (no rubygems included)
#
image:nginx-onbuild:
  <<: *docker_prepare
  stage: build-images
  variables:
    IMAGE_NAME: $CI_REGISTRY_IMAGE:nginx-onbuild
    DOCKERFILE: dockerfiles/Dockerfile.nginx.onbuild
  script:
    - docker build -t $IMAGE_NAME -f $DOCKERFILE .
    - docker push $IMAGE_NAME
  when: manual
  <<: *except_stable

#
# Final Docker image containing a single version
# It is based on Dockerfile.single for each branch
#
image:docs-single:
  <<: *docker_prepare
  stage: pre-deploy
  artifacts: {}
  cache: {}
  dependencies: []
  variables:
    NANOC_ENV: 'production'
    IMAGE_NAME: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_NAME
    DOCKERFILE: Dockerfile.$CI_COMMIT_REF_NAME
  script:
    - docker build --build-arg NANOC_ENV=${NANOC_ENV} --build-arg CI_COMMIT_REF_NAME=${CI_COMMIT_REF_NAME} -t $IMAGE_NAME -f $DOCKERFILE .
    - docker push $IMAGE_NAME
  # Only branches with versions like 10.4
  only:
    - /^\d{1,2}\.\d{1,2}$/
  except:
    - tags

#
# Final Docker image containing all the archives
#
image:docs-archives:
  <<: *docker_prepare
  stage: pre-deploy
  artifacts: {}
  cache: {}
  dependencies: []
  variables:
    IMAGE_NAME: $CI_REGISTRY_IMAGE:archives
  script:
    - docker build -t $IMAGE_NAME -f dockerfiles/Dockerfile.archives .
    - docker push $IMAGE_NAME
  # Run only on schedules since this will contain only the archives
  only:
    - schedules

#
# Build master containing the online archives and latest docs (on schedules)
#
image:docs-latest:
  <<: *docker_prepare
  stage: pre-deploy
  artifacts: {}
  cache: {}
  dependencies: []
  variables:
    NANOC_ENV: 'production'
    IMAGE_NAME: $CI_REGISTRY_IMAGE:latest
    DOCKERFILE: Dockerfile.$CI_COMMIT_REF_NAME
  script:
    - docker build --build-arg NANOC_ENV=${NANOC_ENV} --build-arg CI_COMMIT_REF_NAME=${CI_COMMIT_REF_NAME} -t $IMAGE_NAME -f $DOCKERFILE .
    - docker push $IMAGE_NAME
  allow_failure: true
  only:
    - schedules