tosca_definitions_version: tosca_simple_yaml_1_0

description: >
  TOSCA simple profile with a Single Block Storage node shared by 2-Tier Application with custom AttachesTo Type and implied relationships.

relationship_types:
  MyAttachesTo:
    derived_from: tosca.relationships.AttachesTo
    properties:
      location:
        type: string
        default: /default_location

topology_template:
  inputs:
    cpus:
      type: integer
      description: Number of CPUs for the server.
      constraints:
        - valid_values: [ 1, 2, 4, 8 ]
    storage_size:
      type: scalar-unit.size
      default: 1 GB
      description: Size of the storage to be created.
    storage_snapshot_id:
      type: string
      description: >
        Optional identifier for an existing snapshot to use when creating storage.

  node_templates:
    my_web_app_tier_1:
      type: tosca.nodes.Compute
      capabilities:
        host:
          properties:
            disk_size: 10 GB
            num_cpus: { get_input: cpus }
            mem_size: 4096 MB
        os:
          properties:
            architecture: x86_64
            type: Linux
            distribution: Fedora
            version: 18.0
      requirements:
        - local_storage:
            node: my_storage
            relationship: MyAttachesTo

    my_web_app_tier_2:
      type: tosca.nodes.Compute
      capabilities:
        host:
          properties:
            disk_size: 10 GB
            num_cpus: { get_input: cpus }
            mem_size: 4096 MB
        os:
          properties:
            architecture: x86_64
            type: Linux
            distribution: Fedora
            version: 18.0
      requirements:
        - local_storage:
            node: my_storage
            relationship:
              type: MyAttachesTo
              properties:
                location: /some_other_data_location

    my_storage:
      type: tosca.nodes.BlockStorage
      properties:
        size: { get_input: storage_size }
        snapshot_id: { get_input: storage_snapshot_id }

  outputs:
    private_ip_1:
      description: The private IP address of the application's first tier.
      value: { get_attribute: [my_web_app_tier_1, private_address] }
    private_ip_2:
      description: The private IP address of the application's second tier.
      value: { get_attribute: [my_web_app_tier_2, private_address] }
    volume_id:
      description: The volume id of the block storage instance.
      value: { get_attribute: [my_storage, volume_id] }