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To create a control loop, a user creates a TOSCA Topology Template. In the Topology Template, the user creates a TOSCA Node Template for each Control Loop Element that will be in the Control Loop Definition. Finally, the user creates the Node Template that defines the Control Loop itself, and references the Control Loop Element definitions that make up the Control Loop Definition.
3.1 The Gentle Guidance Control Loop
The best way to explain how to create a Control Loop Definition is by example.
3.1 The Gentle Guidance Control Loop
The Gentle Guidance control loop is illustrated in the diagram below.
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The example Gentle Guidance control loop is illustrated in the diagram above. The domain logic for the control loop is implemented in a microservice running in Kubernetes, a policy, a CDS blueprint, and some configuration that is passed to the microservice over a REST endpoint. We want to manage the life cycle of the domain logic for our Gentle Guidance control loop using our TOSCA based Control Loop Life Cycle Management approach. To do this we create four Control Loop Element definitions, one for the Kubernetes microservice, one for the policy, one for the CDS blueprint and one or the REST configuration.
4. Creating Custom Control Loop Elements
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