heat_template_version: 2013-05-23

description: Template that installs a wordpress server.

parameters:
  image:
    type: string
    label: Image name or ID
    description: Image to be used for server. Please use an Ubuntu based image.
    default: trusty-server-cloudimg-amd64
  flavor:
    type: string
    label: Flavor
    description: Type of instance (flavor) to be used on the compute instance.
    default: m1.small
  key:
    type: string
    label: Key name
    description: Name of key-pair to be installed on the compute instance.
    default: my_key
  private_network:
    type: string
    label: Private network name or ID
    description: Network to attach server to.
    default: private
  mysql_server:
    type: string
    label: MySQL database server
    description: IP address of the MySQL database server.
  database_name:
    type: string
    label: Database name
    description: Name of the application database.
  database_user:
    type: string
    label: Database user
    description: Name of the database user.
  database_password:
    type: string
    label: Database password
    hidden: true
    description: Password to access the database.

resources:
  wait_condition:
    type: OS::Heat::WaitCondition
    properties:
      handle: { get_resource: wh }
      count: 1
      timeout: 600

  wh:
    type: OS::Heat::WaitConditionHandle

  security_group:
      type: OS::Neutron::SecurityGroup
      properties:
        name: web_server_security_group
        rules:
          - protocol: tcp
            port_range_min: 80
            port_range_max: 80

  port:
    type: OS::Neutron::Port
    properties:
      network: { get_param: private_network }
      security_groups:
        - { get_resource: security_group }

  wordpress_instance:
    type: OS::Nova::Server
    properties:
      image: { get_param: image }
      flavor: { get_param: flavor }
      key_name: { get_param: key }
      networks:
        - port: { get_resource: port }
      user_data_format: RAW
      user_data:
        str_replace:
          params:
            __mysql_ip__: { get_param: mysql_server }
            __database_name__: { get_param: database_name }
            __database_user__: { get_param: database_user }
            __database_password__: { get_param: database_password }
            wc_notify: { get_attr: ['wh', 'curl_cli'] }
          template: |
            #!/bin/bash -ex

            # install dependencies
            apt-get update
            apt-get -y install apache2 php5 libapache2-mod-php5 php5-mysql php5-gd mysql-client

            # download wordpress
            wget http://wordpress.org/latest.tar.gz
            tar -xzf latest.tar.gz

            # configure wordpress
            cp wordpress/wp-config-sample.php wordpress/wp-config.php
            sed -i 's/database_name_here/__database_name__/' wordpress/wp-config.php
            sed -i 's/username_here/__database_user__/' wordpress/wp-config.php
            sed -i 's/password_here/__database_password__/' wordpress/wp-config.php
            sed -i 's/localhost/__mysql_ip__/' wordpress/wp-config.php

            # install a copy of the configured wordpress into apache's www directory
            rm /var/www/html/index.html
            cp -R wordpress/* /var/www/html/

            # give apache ownership of the application files
            chown -R www-data:www-data /var/www/html/
            chmod -R g+w /var/www/html/

            # notify heat that we are done here
            wc_notify --data-binary '{"status": "SUCCESS"}'

outputs:
  name:
    description: Name of the wordpress instance.
    value: { get_attr: [wordpress_instance, name] }
  ip:
    description: The IP address of the wordpress instance.
    value: { get_attr: [wordpress_instance, first_address] }
  port:
    description: The network port of the wordpress instance.
    value: { get_resource: port }