tosca_definitions_version: tosca_simple_yaml_1_0

imports:
  - definitions.yaml

topology_template:
  description: Template of online transaction processing service.

  node_templates:
    mq:
      type: example.QueuingSubsystem
      # properties:
        # to be updated when substitution_mapping is implemented
      # capabilities:
        # message_queue_endpoint:
          # to be updated when substitution_mapping is implemented
      requirements:
        - receiver1: trans1
        - receiver2: trans2

    trans1:
      type: example.TransactionSubsystem
      properties:
        # TODO to be updated when substitution_mapping is implemented
        # mq_server_ip: { get_attribute: [ mq, server_ip ] }
        # for now, we will use the loopback address to avoid errors as
        # this property is required in the schema
        mq_server_ip: 127.0.0.1
        receiver_port: 8080
      # capabilities:
        # message_receiver:
          # to be updated when substitution_mapping is implemented
      requirements:
        - database_endpoint: dbsys

    trans2:
      type: example.TransactionSubsystem
      properties:
        # TODO to be updated when substitution_mapping is implemented
        # mq_server_ip: { get_attribute: [ mq, server_ip ] }
        # for now, we will use the loopback address to avoid errors as
        # this property is required in the schema
        mq_server_ip: 127.0.0.1
        receiver_port: 8080
      # capabilities:
        # message_receiver:
          # to be updated when substitution_mapping is implemented
      requirements:
        - database_endpoint: dbsys

    dbsys:
      type: example.DatabaseSubsystem
      # properties:
        # to be updated when substitution_mapping is implemented
      # capabilities:
        # database_endpoint:
          # to be updated when substitution_mapping is implemented