Gitlab pipelines

Posted on 28-Jul-2018

Gitlab allows you to create a CI/CD configuration to test your application or tool.

To enable the pipelines you'll need to create a file .gitlab-ci.yml in your project root directory.

Here is a simple example on how a basic configuration would look like for a php project:

stage_name:
    image: registry.gitlab.com/marius-rizac/ci-registry/php7.1:latest
    before_script:
        - composer install --no-interaction
    script:
        - vendor/bin/phpunit

The above configuration will use the docker image provided by the image keyword, will download the project, then will run composer install without to require any interaction from user. After that, the scripts are executed. Both in before_scripts and in scripts you can add multiple items.

More examples

Define pipeline stages:

stages:
  - build
  - test
  - code
  - deploy

Enable vendor and node_modules cache that will be distributed between pipeline stages

cache:
  key: ${CI_COMMIT_REF_SLUG}
  paths:
    - node_modules/
    - vendor/

For this to work, you need that the first stage to generate both directories. If one fails to be created, for example a composer or a npm error, the cache will not be created

Run tests with codeception and a MySQL database:

image: registry.gitlab.com/marius-rizac/ci-registry/php7.1:latest

variables:
  MYSQL_DATABASE: database_name
  MYSQL_ROOT_PASSWORD: root_user_password
  GIT_DEPTH: "1"

codeception:
  stage: test
  services:
    - alias: "mysql"
      name: "registry.gitlab.com/marius-rizac/ci-registry/mysql5.7:latest"
  before_script:
    - bash .gitlab-ci.sh
    - php bin/console setup:install
    - php bin/console demo:data
  script:
    - vendor/bin/codecept run --fail-fast

Run code fixer

code-fixer:
  stage: code
  before_script:
    - rm composer*
    - composer require friendsofphp/php-cs-fixer
  script:
    - vendor/bin/php-cs-fixer fix -v --dry-run

Deployment stage

deploy_live:
  stage: deploy
  script:
    - 'which ssh-agent || ( apt-get update -y && apt-get install openssh-client -y )'
    - eval $(ssh-agent -s)
    # this key must be set as variable in gitlab config page for the project
    - ssh-add <(echo "$SSH_PRIVATE_KEY")
    - mkdir -p ~/.ssh
    - '[[ -f /.dockerenv ]] && echo -e "Host *\n\tStrictHostKeyChecking no\n\n" > ~/.ssh/config'
    - ssh web@www.example.com -t "cd /home/server && ./dep.sh example.com $CI_COMMIT_SHA"

  environment:
    name: production
    url: http://www.example.com # this url will be available in environments page in gitlab
  variables:
    # this will not clone the repository itself (useful in big repositories)
    GIT_STRATEGY: none
#  when: manual
  only:
    - master