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implications-constraints

Variable Service Template

The variability of the following variable service template shall be resolved.

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tosca_definitions_version: tosca_variability_1_0
topology_template:
    variability:
        options:
            node_default_condition: true
            node_default_condition_mode: incoming-host
            relation_default_condition: true
            relation_default_condition_mode: source-target
            type_default_condition: true
            hosting_stack_constraint: true
            optimization_topology: false
            optimization_topology_unique: true
        inputs:
            static:
                type: boolean
                default: true
        presets:
            static:
                inputs:
                    static: true
            elastic:
                inputs:
                    static: false
        expressions:
            is_static:
                equal:
                    - variability_input: static
                    - true
            is_elastic:
                equal:
                    - variability_input: static
                    - false
        constraints:
            - implies:
                  - logic_expression: is_static
                  - relation_presence:
                        - worker
                        - dev_host
            - implies:
                  - logic_expression: is_elastic
                  - relation_presence:
                        - worker
                        - prod_host
    node_templates:
        worker:
            type: worker
            persistent: true
            requirements:
                - dev_database:
                      node: dev_database
                - dev_host:
                      node: dev_host
                - prod_database:
                      node: prod_database
                - prod_host:
                      node: prod_host
        dev_database:
            type: dev_database
            requirements:
                - host: dev_host
        dev_host:
            type: dev_host
            requirements:
                - host:
                      node: dev_cloud
        dev_cloud:
            type: dev_cloud
        prod_database:
            type: prod_database
            requirements:
                - host: prod_host
        prod_host:
            type: prod_host
            requirements:
                - host:
                      node: prod_cloud
        prod_cloud:
            type: prod_cloud

Variability-Resolved Service Template

The following variability-resolved service template is expected.

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tosca_definitions_version: tosca_simple_yaml_1_3
topology_template:
    node_templates:
        worker:
            type: worker
            requirements:
                - prod_database: prod_database
                - prod_host: prod_host
        prod_database:
            type: prod_database
            requirements:
                - host: prod_host
        prod_host:
            type: prod_host
            requirements:
                - host: prod_cloud
        prod_cloud:
            type: prod_cloud
Last update: December 13, 2024