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hosting-aware-pruning-motivation-static

Description

  • 2 conditions at shop hosting relations
  • required to trigger incoming pruning

  • alternative is to model 2 conditions at the direct hosts

  • 2 conditions at shop database connections

  • required, since database must be pruned

  • alternative is to model 2 conditions at the databases directly

  • 1 condition at monitor

  • required, since incoming pruning of monitor host is not triggered

  • 5 conditions in total

  • hosting_stack_constraint has no effect

  • optimization has no effect

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:
        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
        options:
            mode: semantic-loose
            node_default_condition_mode: incoming
            hosting_stack_constraint: false
            optimization_topology: false
    node_templates:
        shop:
            type: shop.component
            persistent: true
            requirements:
                - host:
                      node: os_compute
                      conditions:
                          logic_expression: is_static
                - host:
                      node: gcp_runtime
                      conditions:
                          logic_expression: is_elastic
                - database:
                      node: os_database
                      conditions:
                          logic_expression: is_static
                - database:
                      node: gcp_database
                      conditions:
                          logic_expression: is_elastic
        os_database:
            type: os.database
            requirements:
                - host: os_compute
        os_monitor:
            type: os.monitor
            conditions:
                logic_expression: is_static
            requirements:
                - host: os_compute
        os_compute:
            type: os.compute
            requirements:
                - host: os_cloud
        os_cloud:
            type: os.provider
        gcp_runtime:
            type: gcp.runtime
            requirements:
                - host: gcp_cloud
        gcp_database:
            type: gcp.database
            requirements:
                - host: gcp_dbms
        gcp_dbms:
            type: gcp.dbms
            requirements:
                - host: gcp_cloud
        gcp_cloud:
            type: gcp.provider

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:
        shop:
            type: shop.component
            requirements:
                - host: os_compute
                - database: os_database
        os_database:
            type: os.database
            requirements:
                - host: os_compute
        os_monitor:
            type: os.monitor
            requirements:
                - host: os_compute
        os_compute:
            type: os.compute
            requirements:
                - host: os_cloud
        os_cloud:
            type: os.provider
Last update: November 18, 2024