CDM Analysis - Come up with questions & clarifications

[KarthikeyanV-TechM]

Come up with questions & clarifications

Linked to : #26

[Vishal-Chandr]

• Do we need to perform datastore update in Validation Orchestrator?
  https://github.com/openBackhaul/ControllerDomainManager/blob/develop/spec/Functions/Validation/ValidationOrchestrator.md#:~:text=ValidationOrchestrator%20would%20overwrite%20the%20RunningDS%20with%20the%20content%20of%20the%20CandidateDS

• Rollback of CandidateDS is required if response != 204 or it can be handled while processing next request?
  https://github.com/openBackhaul/ControllerDomainManager/tree/develop/spec/Functions/Interpretation

• Can we have a case where we need to restore StartupDS to RunningDS? like hardware reboot, controller restart, factory reset, etc.

• Can we respond with 429 only if CandidateDS is in locked state? Will support response for list-* and provide-* which are using RunningDS.
  https://github.com/openBackhaul/ControllerDomainManager/blob/2f1cab5cc53e4ce783295ed976d8194da114a551/spec/Functions/Validation/ValidationOrchestrator.md#:~:text=During%20the%20process%20of%20interpretation%20and%20validation%2C%20the%20CDM%20does%20not%20accept%20requests%20to%20any%20of%20the%20InterpretationFunctions%20and%20responds%20429%20%27too%20many%20requests%27.

• Should we explicitly validate RPC before copying from CandidateDS to RunningDS?

[Vishal-Chandr]

• What is the purpose of performing reconstruction, construction and destruction of various function names.

1. Like in Application Template, we are performing measure-management-domain-interface-function-name and reconstruct-management-domain-interfaces-function-name
2. LoadBalancer Template, measure-load-balancer-function-name, construct-forwarding-function-name, destruct-forwarding-function-name, reconstruct-forwarding-function-name
3. Controller Template, measure-controller-function-name, reconstruct-mount-point-function-name, destruct-mount-point-function-name

[Vishal-Chandr]

Since, we are working on Unstructured approach for CDM. Each application needs to be state aware like Connection Preparation (CP) should be aware whether connection is prepared/established or not. This will ensure requests to be idempotent in nature.

1. How state will be maintained in individual applications?
2. If CDM is communicating with MM (NetconfInterfaceManager in future) which in turn sends requests to CP which communicates with the Device. 04_Flow_Substructured.png. How will this flow backpropagate success or failure of underlying applications?

In such a case what will be best approach? Event driven feedback using asynchronous events or Callback url.

https://github.com/openBackhaul/MediatorManager/blob/v1.0.0_spec/spec/concepts/03_AutomationArchitecture.md#unterstrukturierter-prozess:~:text=Understructured%20process

[Vishal-Chandr]

Since, we are working on Unstructured approach for CDM. Each application needs to be state aware like Connection Preparation (CP) should be aware whether connection is prepared/established or not. This will ensure requests to be idempotent in nature.

1. How state will be maintained in individual applications?
2. If CDM is communicating with MM (NetconfInterfaceManager in future) which in turn sends requests to CP which communicates with the Device. 04_Flow_Substructured.png. How will this flow backpropagate success or failure of underlying applications?

In such a case what will be best approach? Event driven feedback using asynchronous events or Callback url.

https://github.com/openBackhaul/MediatorManager/blob/v1.0.0_spec/spec/concepts/03_AutomationArchitecture.md#unterstrukturierter-prozess:~:text=Understructured%20process

As discussed with Thorsten we need to ignore Linear and Unstructured process as they were old approaches and no longer valid. Consider approach/thoughts present after Domains