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0461 Governance Engines

The governance engine types in this model are used to create a governance engine definition.

UML

GovernanceEngine entity

A governance engine is a software capability that is able to run specific services on demand. These services, called governance services, typically implement specific logic that is needed to govern an organization's resources or the metadata associated with them.

Open metadata recognizes three types of governance engine:

SupportedGovernanceService relationship

The capability of a governance engine is specified via the SupportedGovernanceService relationships.

The requestType attribute in this relationship is the caller's request type (known as the governance request type). The serviceRequestType attribute maps the governance request type to a request type supported by the associated governance service. If serviceRequestType is null, the governance request type is used when calling the governance service.

Each governance request type linked to a specific governance engine must be unique.

The requestParameters provide initial values of the request parameters passed to the governance services when it is called. These are overridden by any request parameters supplied by the caller.

GovernanceService entity

Governance services are specialist connectors. They are represented in open metadata using the GovernanceService entity which is a specialization of DeployedConnector`. This entity is linked to a Connection entity via a ConnectionToAsset relationship.

A governance service can be linked to multiple governance engines via the SupportedGovernanceService relationship. It can be linked to the same governance engine multiple times as long as each SupportedGovernanceService relationship has a different governance request type.

The subtype of the governance service linked via the SupportedGovernanceService relationship should be consistent with the subtype of the associated governance engine. For example:

  • A GovernanceActionService is linked to a GovernanceActionEngine.
  • An OpenDiscoveryService is linked to an OpenDiscoveryService.
  • A RepositoryGovernanceService is linked to a RepositoryGovernanceEngine.
Further information

The Open Metadata Engine Services (OMES) support the implementation of each type of governance engine. They run in an Engine Host OMAG Server and draw their configuration from the GovernanceEngine and the linked GovernanceService elements in the associated metadata server.

The type definitions for discovery engines and services are shown in model 0601.