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STATUS: Draft

MSB:

1 High Level Component Definition and Architectural Relationships 



The CLAMP functional entity provides the capability to manage runtime control loops.  It provides the capability to

  • Create control loop from DCAE blueprint sent by SDC
  • Create configuration policy from the policy Tosca sent by SDC
  •  Configure DCAE applications of the control loop
  • Associate µService configuration policies to the DCAE application
  • Configure the operations to be taken by the control loop (by creating/updating/deleting operational policies)
  • Deploy/un-deploy control loop flow (blueprints) to DCAE
  • Control loop visualization. 

CLAMP relies on Policy to communicate to App-C/VF-C/SDN-C/SO in runtime, hence these are not part of CLAMP 

2. API definitions

CLAMP provides the following interfaces:

Interface NameInterface Definition Interface Capabilities
CLAMPE-1Control Loop Lifecycle Management Interface.   A user interface for:
  • Selecting the control loop flow
  • Entering configuration policy parameters
  • Entering operational policy parameters
  • Managing life cycle of DCAE control flow blueprint 
CLAMPE-2Control loop dashboard.  User interface to show the overall status of the control loop through DMAAP events

 Display and update:

  • Events received and actions taken on the control loop.

Note:   xxxI interface is a Component internal interface.  xxxxE interface is a component external interface

The current API documents can be found at:

CLAMP consumes the following Interfaces:

Interface NamePurpose Reason For Use
SDCE-6To receive the Control Loop Blueprint from SDCTo receive
PolicyE-2To create and configure the closed Loop Operational Policies and Configuration policies(DCAE Aps. Config.)
DCAEE-x Retrieve DCAE appplication status
DCAEE-y Deploy/remove DCAE application. 


3. Component Description:

A more detailed figure and description of the component.

<< For later inclusion >>

4. known system limitations

Runtime: None

Clamp data redundancy is dependent on Kubernetes and the persistent volume.

Clamp application redundancy HA relies on Kubernetes

5. Used Models

Clamp uses the following models:

  • Service model (received from SDC)
  • VNF model (received from SDC)
  • Policy Model.


6. System Deployment Architecture


Clamp consists of 5 containers:

  • CLAMP container
  • MariaDB container
  • Kibana container
  • E_Search container
  • LogStash container 

7. New Capabilities in this Release

This release, CLAMP adds the following Capabilities:

  • Introduction of the model driven approach for Control Loops
    • add policy-model to the SDC distribution
    • automatic rendering of configuration policy UI based on the distributed policy model
    •  better rending of the display of the control loop flow based on the distributed blueprint
  • enhanced internal model to better support model driven approach. 

8. References

  1.  CLAMP Overview & User Guide: https://onap.readthedocs.io/en/latest/submodules/clamp.git/docs/index.html 
  2. CLAMP internal interfaces:  https://onap.readthedocs.io/en/latest/_downloads/d3c9f924c6586fe411d40a05ad9b1bb7/swagger.pdf 


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