_templates:
  local_volumes: &local_volumes
    /config: !BindRO /work/config/local

containers:
  _base_alpine:
    setup:
      - !Alpine v3.4
      - !EnsureDir /config
      - !Sh "chmod +r /bin/bbsuid"
  mysql:
    setup:
      - !Container _base_alpine
      - !Install
        - mariadb
        - mariadb-client
    volumes:
      <<: *local_volumes
      /var/lib/mysql: !Persistent {name: mysql, init-command: _init_db}

  nginx:
    setup:
      - !Container _base_alpine
      - !Install [nginx]
    volumes:
      <<: *local_volumes
      /var/log/nginx: !Snapshot

  php:
    setup:
      - !Alpine v3.4
      - !Sh "chmod +r /bin/bbsuid"
      - !AlpineRepo {branch: edge, repo: main, tag: main}
      - !AlpineRepo {branch: edge, repo: testing, tag: testing}
      - !AlpineRepo {branch: edge, repo: community, tag: community}
      - !Install
        - php5-fpm@main
        - php5-mysqli
        - php5-json
        - php5-cli
        - php5-ctype
      - !Copy
        source: /work/config/local/php-fpm.conf
        path: /etc/php5/fpm.d/app.pool.conf
      - !EnsureDir /log
      - !EnsureDir /config
    volumes:
      <<: *local_volumes
      /log: !Persistent {name: php_log}
      /var/log: !Snapshot

commands:
  _init_db: !Command
    description: Initialize MySQL database
    container: mysql
    environ:
      DB_HOST: 127.0.0.1
      DB_DATABASE: getexam
      DB_USERNAME: getexam
      DB_PASSWORD: getexam
    run: |
      mysql_install_db
      mysqld_safe --defaults-extra-file=/config/mysql.conf --skip-syslog --no-auto-restart
      while [ ! -f /tmp/mysqld.pid ]; do sleep 0.1; done
      mysqladmin --defaults-extra-file=/config/mysql.conf create $DB_DATABASE
      mysql --defaults-extra-file=/config/mysql.conf -e "CREATE USER '$DB_USERNAME'@'$DB_HOST' IDENTIFIED BY '$DB_PASSWORD';"
      mysql --defaults-extra-file=/config/mysql.conf -e "GRANT ALL PRIVILEGES ON $DB_DATABASE.* TO '$DB_USERNAME'@'$DB_HOST';"
      mysqladmin --defaults-extra-file=/config/mysql.conf flush-privileges
      mysqladmin --defaults-extra-file=/config/mysql.conf shutdown

  mysql: &mysql !Command
    container: mysql
    description: Run mysql database server
    user-id: 1
    external-user-id: 0
    run: mysqld_safe --defaults-extra-file=/config/mysql.conf --skip-syslog --console --debug-gdb

  nginx: &nginx !Command
    container: nginx
    description: Run nginx webserver
    run: nginx -c /config/nginx.conf

  php: &php !Command
    container: php
    description: Run php-fpm (application)
    user-id: 1
    external-user-id: 0
    run: [php-fpm, -eFO]

  migration: &migration !Command
    container: php
    description: Run latest migration
    user-id: 1
    external-user-id: 0
    run: |
      cd /work/
      php index.php cli migration last

  run: !Supervise
      description: Run full server stack
      kill-unresponsive-after: 5
      children:
        mysql: *mysql
        nginx: *nginx
        php: *php