tosca_definitions_version: tosca_simple_yaml_1_0 description: > Queue subsystem, which is service template with topology_template, act as a nested system inside another system and also act as stand alone service template. imports: - definitions.yaml topology_template: description: Template of a database including its hosting stack. inputs: server_ip: type: string description: IP address of the message queuing server to receive messages from. default: 127.0.0.1 server_port: type: integer description: Port to be used for receiving messages. default: 8080 my_cpus: type: integer description: Number of CPUs for the server. default: 2 constraints: - valid_values: [ 1, 2, 4, 8 ] substitution_mappings: node_type: example.QueuingSubsystem # capabilities: # message_receiver: [ app, message_receiver ] requirements: receiver1: [ tran_app, receiver1 ] receiver2: [ tran_app, receiver2 ] node_templates: tran_app: type: example.QueuingSubsystem properties: server_ip: { get_input: server_ip } server_port: { get_input: server_port } requirements: - host: node: server server: type: tosca.nodes.Compute capabilities: host: properties: disk_size: 10 GB num_cpus: { get_input: my_cpus } mem_size: 4096 MB os: properties: architecture: x86_64 type: Linux distribution: Ubuntu version: 14.04 outputs: receiver_ip: description: private IP address of the message receiver application value: { get_attribute: [ server, private_address ] } # It seems current _process_intrisic_function can not handle more than 2 arguments, save it for later # receiver_port: # description: Port of the message receiver endpoint # value: { get_attribute: [ app, data_endpoint, port_name ] } groups: tran_server_group: members: [ tran_app, server ] type: tosca.groups.Root