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@startuml participant API_User box "PolicyDesign" #LightBlue participant PolicyDesign database PolicyDB end box autonumber API_User --> PolicyDesign : Get Policy Type Reference PolicyDesign --> PolicyDB : Get Policy Type Artifact and Metadata PolicyDesign --> API_User : Return Policy Type Reference and Metadata API_User --> PolicyDesign : Get Policy Reference and Metadata PolicyDesign --> PolicyDB : Get Policy Metadata alt Policy Artifact exists PolicyDesign --> API_User : Return Policy Reference and Metadata else Policy Artifact does not exist PolicyDesign --> API_User : Return New Policy Reference and Empty Metadata end API_User --> API_User : Create Policy Editing and Generation Session activate API_User loop API_User --> PolicyDesign : Use Policy Type specification get Policy ParmaetersParameters from user end API_User --> PolicyDesign : Create Policy PolicyDesign --> PolicyDesign : Create Policy activate PolicyDesign deactivate PolicyDesign PolicyDesign --> PolicyDB : Save Policy Artifact and Metadata PolicyDesign --> API_User : Policy Creation Result deactivate API_User @enduml |
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The sequence diagram below is a high level view of SDC-triggered concrete policy generation for some arbitrary entity EntityA. The parameters to create a policy are read from a TOSCA Policy specification read from a CSAR received from SDC.
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@startuml participant SDC participant DMaaP box "PolicyDesign" #LightBlue participant PolicyDesignSDCHandlerPolicyDistribution << API_User >> participant ConcretePolicyDesignPolicyDesign end box autonumber PolicyDesignSDCHandlerPolicyDistribution --> DMaaP : Subscribe for SDC Notifications on Entries of Interest SDC --> DMaaP : New Entry of Interest: EntityA DMaaP --> PolicyDesignSDCHandlerPolicyDistribution : New Entry of Interest: EntityA PolicyDesignSDCHandlerPolicyDistribution --> ConcretePolicyDesignPolicyDesign : Get Policy Reference ConcretePolicyDesignPolicyDesign --> PolicyDesignSDCHandlerPolicyDistribution : Return Policy Reference and Metadata PolicyDesignSDCHandlerPolicyDistribution --> PolicyDesignSDCHandlerPolicyDistribution : Create Policy Editing and Generation Session activate PolicyDesignSDCHandlerPolicyDistribution loop PolicyDesignSDCHandlerPolicyDistribution --> ConcretePolicyDesignPolicyDesign : Set Models, Rules, Tasks and Flow for Policy end PolicyDesignSDCHandler Use Policy Type specification to read Policy Parameters from TOSCA specification in CSAR end PolicyDistribution --> ConcretePolicyDesignPolicyDesign : Generate Policy ConcretePolicyDesignPolicyDesign --> PolicyDesignSDCHandlerPolicyDistribution : Policy Generation Result deactivate PolicyDesignSDCHandlerPolicyDistribution @enduml |
PolicyDesign contains a component PolicyDesignSDCHandler for managing SDC-triggered concrete policy creation and update requests. PolicyDesignSDCHandler is an API_User, it uses the Policy Design API to execution policy creation and update. It reads the information it needs to populate the policy template from SDC and then uses this information to automatically generate a policy.
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