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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: April 28, 2024