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With Model Driven Control Loop feature, Policy is migrating toward new design/architecture in Dublin. This requires interfacing clients (CLAMP, DCAE) to use new LC API’s and onboarding MS to use new tosca policy model. As automated generation of models and distribution between SDC and Policy is deferred to next release, certain manual steps will be required in Dublin. The steps below should be followed by any DCAE MS targeted under CL flows deployed through CLAMP.

Policy

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Type Creation (Development phase)

Create the MS specific blueprint, component_spec and associated data_format based on DCAE team specification (refer to details under DCAE wiki page - Dublin Deployment Strategy DCAE Service Component (MS) Deployment Options).
Note: For components with dynamic configuration, the component spec MUST include policy schema definition (policy_editable set for required parameter exposed via policy with corresponding policy_schema defined)
Use SDC/ToscaLab tool as documented here to create the base policy model. More about how to create policy types from tosca tool can be found here -> Policy type creation
Note: If the policy model does not get generated, change the "component_type" from "docker" to "cdap" in the componentspec and retry policy model creation.

The base policy model created by the tool is not compliant to R4 model expected by Policy and CLAMP; following hence following manual updates will be required.should be done.

Code Block

theme	Midnight
title	Manual policy updates steps
collapse	true

Rename node_types to policy_types
Replace policy.nodes.Root structure with onap.policies.Monitoring
 
  policy.nodes.Root:
    derived_from: tosca.nodes.Root
    properties:
      policyDescription:
        required: false
        type: string
      policyName:
        required: true
        type: string
      policyScope:
        required: true
        type: string
      policyVersion:
        required: true
    onap.policies.Monitoring:
        derived_from: tosca.policies.Root
        description: a base policy type for all policies that govern monitoring provision
        version : 1.0.0

Rename “policy.nodes.<component_name>” under policy_types  as “onap.policies.monitoring.<component_name> and as derived from onap.policies.Monitoring
Example:

      onap.policies.monitoring.cdap.tca.hi.lo.app:
        derived_from: onap.policies.Monitoring
        version : 1.0.0
        properties:
            tca_policy:
                type: list
                description: TCA Policy JSON
                entry_schema:
                    type: onap.datatypes.monitoring.tca_policy
 

Changing data_types to onap complaint name from policy.data prefix to onap.datatypes.monitoring
Example:  policy.data.metricsPerEventName -> onap.datatypes.monitoring.metricsPerEventName 

  policy.data.tca_policy -> onap.datatypes.monitoring.tca_policy

 
Update each data_types to indicate relation to tosca.datatypes.Root 
Example: 
    onap.datatypes.monitoring.tca_policy:
       derived_from: tosca.datatypes.Root