GuestBook.yaml

#  Licensed under the Apache License, Version 2.0 (the "License"); you may
#  not use this file except in compliance with the License. You may obtain
#  a copy of the License at
#
#       http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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#  License for the specific language governing permissions and limitations
#  under the License.

Namespaces:
  =: io.murano.apps.docker
  std: io.murano

Name: DockerGuestBook

Extends: DockerApplication

Properties:
  name:
    Contract: $.string().notNull()

  publish:
    Contract: $.bool().notNull()
    Default: true

  redisMaster:
    Contract: $.class(DockerRedis).notNull()

  redisSlaveHost:
    Contract: $.class(DockerContainerHost).notNull()

  redisSlave:
    Contract: $.class(DockerRedisSlave)
    Usage: Out


Methods:
  .init:
    Body:
      - $._environment: $.find(std:Environment).require()
      - $._scope: switch($.publish => public, true => internal)


  deploy:
    Body:
      - $.redisMaster.deploy()
      - $.redisSlave: new(
          DockerRedisSlave,
          $,
          name => 'RedisSlave',
          host => $this.redisSlaveHost,
          publish => false,
          redisMaster => $this.redisMaster)
      - $.redisSlave.deploy()
      - $.super($.deploy())


  getContainer:
    Body:
      - $redisMasterLink: $.getConnectionTo($.redisMaster, 6379)
      - $redisSlaveLink: $.getConnectionTo($.redisSlave, 6379)
      - Return:
          name: $.name
          image: 'brendanburns/php-redis'
          env:
            REDIS_MASTER_SERVICE_HOST: $redisMasterLink.host
            REDIS_MASTER_SERVICE_PORT: $redisMasterLink.port
            REDISSLAVE_SERVICE_HOST: $redisSlaveLink.host
            REDISSLAVE_SERVICE_PORT: $redisSlaveLink.port
          ports:
            - port: 80
              scope: $._scope


  onInstallationStart:
    Body:
      - $._environment.reporter.report($this, 'Installing Redis Slave')


  onInstallationFinish:
    Body:
      - If: $.publish
        Then:
          - $endpoints: $.applicationEndpoints.where($.scope = $this._scope).
              select(format('{0}:{1}', $.address, $.port))
          - $._environment.reporter.report($this, 'GuestBook {0} is available at {1}'.format($.name, $endpoints.join(', ')))
        Else:
          - $._environment.reporter.report($this, 'GuestBook {0} has deployed but is not accessible from outside'.format($.name))