xlab-si/xopera-opera

tosca_definitions_version: tosca_simple_yaml_1_3

node_types:
  steampunk.test.Student:
    derived_from: tosca.nodes.Root
    properties:
      student_name:
        type: string
        description: The name of the student
      enrolment_number:
        type: integer
        description: The number in the class register assigned to the student
    attributes:
      student_id:
        type: string
        description: Unique ID of the student.
    interfaces:
      Standard:
        type: tosca.interfaces.node.lifecycle.Standard
        operations:
          create:
            inputs:
              id: { value: { get_property: [ SELF, enrolment_number ] }, type: integer }
            outputs:
              student_id: [ SELF, student_id ]
            implementation: playbooks/create-student.yaml

  steampunk.test.Teacher:
    derived_from: tosca.nodes.Root
    requirements:
      - student:
          capability: tosca.capabilities.Node
          relationship: steampunk.test.relationships.TeacherTeachesStudent
          occurrences: [ 0, UNBOUNDED ]
    attributes:
      student_ids:
        type: list
        description: >
          The list of IDs of the students that the teacher teaches
        default: []


relationship_types:
  steampunk.test.relationships.TeacherTeachesStudent:
    derived_from: tosca.relationships.DependsOn
    description: >
      Associates a teacher with a student.
    interfaces:
      Configure:
        operations:
          pre_configure_source:
            inputs:
              student_id:
                value: { get_attribute: [ TARGET, student_id ] }
                type: string
              student_ids:
                value: { get_attribute: [ SOURCE, student_ids ] }
                type: list
            outputs:
              new_list: [ SOURCE, student_ids ]
            implementation: playbooks/teacher-teaches-student--preconfigure-source.yaml


topology_template:

  node_templates:

    student-ben:
      type: steampunk.test.Student
      properties:
        student_name: Ben
        enrolment_number: 1

    student-anne:
      type: steampunk.test.Student
      properties:
        student_name: Anne
        enrolment_number: 3

    student-tina:
      type: steampunk.test.Student
      properties:
        student_name: Tina
        enrolment_number: 4

    student-chris:
      type: steampunk.test.Student
      properties:
        student_name: Tina
        enrolment_number: 6

    teacher-paul:
      type: steampunk.test.Teacher
      requirements:
        - student: student-ben
        - student: student-tina
        - student: student-chris
        - student: student-anne

  outputs:
    student_id_list:
      type: list
      description: The final list of IDs of Paul's students
      value: { get_attribute: [ teacher-paul, student_ids ] }