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diff --git a/docs/clamp/acm/api-protocol/controlloop-participant-protocol.rst b/docs/clamp/acm/api-protocol/controlloop-participant-protocol.rst deleted file mode 100644 index 2fa5336f..00000000 --- a/docs/clamp/acm/api-protocol/controlloop-participant-protocol.rst +++ /dev/null @@ -1,472 +0,0 @@ -.. This work is licensed under a Creative Commons Attribution 4.0 International License. - -.. _controlloop-participant-protocol-label: - -The CLAMP Control Loop Participant Protocol -########################################### - -The CLAMP Control Loop Participant protocol is an asynchronous protocol that is used by the -CLAMP runtime to coordinate life cycle management of Control Loop instances. The protocol -supports the functions described in the sections below. - - -Protocol Dialogues -================== - -The protocol supports the dialogues described below. - -Participant Registration and De-Registration --------------------------------------------- - -Registration when a participant comes up and update of participant with control loop type -information and common parameter values for its control loop types. - -.. image:: ../images/clamp-cl-participants/participant-registering.png - - -De-registration is executed as a participant goes down. - -.. image:: ../images/clamp-cl-participants/participant-deregistration.png - - -Control Loop Priming and De-Priming ------------------------------------ - -When a control loop is primed, the portion of the Control Loop Type Definition and Common -Property values for the participants of each participant type mentioned in the Control Loop -Definition are sent to the participants. - -.. image:: ../images/clamp-cl-participants/controlloop-priming.png - -When a control loop is de-primed, the portion of the Control Loop Type Definition and Common -Property values for the participants of each participant type mentioned in the Control Loop -Definition are deleted on participants. - -.. image:: ../images/clamp-cl-participants/controlloop-depriming.png - - -Control Loop Update -------------------- - -Control Loop Update handles creation, change, and deletion of control loops on participants. -Change of control loops uses a semantic versioning approach and follow the semantics described -on the page `4.1 Management of Control Loop Instance Configurations <management-cl-instance-configs>`. - -.. image:: ../images/clamp-cl-participants/controlloop-update.png - -The handling of a ControlLoopUpdate message in each participant is as shown below. - -.. image:: ../images/clamp-cl-participants/controlloop-update-msg.png - -Control Loop State Change -------------------------- - -This dialogue is used to change the state of Control Loops and their Control Loop Elements. The -CLAMP Runtime sends a Control Loop State Change message on the control loop to all participants. -Participants that have Control Loop Elements in that Control Loop attempt an update on the state -of the control loop elements they have for that control loop, and report the result back. - -The *startPhase* in the `Definition of TOSCA fundamental Control Loop Types -<https://github.com/onap/policy-clamp/blob/master/common/src/main/resources/tosca/ControlLoopTOSCAServiceTemplateTypes.yaml>`_ -is particularly important in control loop state changes because sometime the user wishes to control -the order in which the state changes in Control Loop Elements in a control loop. In state changes -from *UNITITIALISED* → *PASSIVE* and from *PASSIVE* → *RUNNING*, control loop elements are started in -increasing order of their *startPhase*. In state changes from *RUNNING* → *PASSIVE* and from *PASSIVE* -→ *UNITITIALISED*, control loop elements are started in decreasing order of their *startPhase*. - -The CLAMP runtime controls the state change process described in the diagram below. The CLAMP runtime -sends a Control Loop State Change message on DMaaP to all participants in a particular Start Phase so, -in each state change multiple Control Loop State Change messages are sent, one for each Start Phase in -the control loop. If more than one Control Loop Element has the same Start Phase, those Control Loop -Elements receive the same Control Loop State Change message from DMaaP and start in parallel. - -The Participant reads each State Change Message it sees on DMaaP. If the Start Phase on the Control -Loop State Change message matches the Start Phase of the Control Loop Element, the participant processes -the State Change message. Otherwise the participant ignores the message. - -.. image:: ../images/clamp-cl-participants/controlloop-state-change.png - -The handling of a ControlLoopStateChange message in each participant is as shown below. - -.. image:: ../images/clamp-cl-participants/controlloop-state-change-msg.png - -Control Loop Monitoring and Reporting -------------------------------------- - -This dialogue is used as a heartbeat mechanism for participants, to monitor the status of Control Loop -Elements, and to gather statistics on control loops. The ParticipantStatus message is sent periodically -by each participant. The reporting interval for sending the message is configurable. - -.. image:: ../images/clamp-cl-participants/controlloop-monitoring.png - - -Messages -======== - -The CLAMP Control Loop Participant Protocol uses the following messages. The descriptions below give -an overview of each message. For the precise definition of the messages, see the `CLAMP code at Github -<https://github.com/onap/policy-clamp/tree/master/models/src/main/java/org/onap/policy/clamp/controlloop/models/messages/dmaap/participant>`_ -. All messages are carried on DMaaP. - - -.. list-table:: - :widths: 15 10 10 15 15 35 - :header-rows: 1 - - * - Message - - Source - - Target - - Purpose - - Important Fields - - Field Descriptions - * - ParticipantRegister - - Participant - - CLAMP Runtime - - Participant registers with the CLAMP runtime - - ParticipantId - - The ID of this participant - * - - - - - - - - - ParticipantType - - The type of the participant, maps to the capabilities of the participant in Control Loop Type - Definitions - * - ParticipantRegisterAck - - CLAMP Runtime - - Participant - - Acknowledgement of Participant Registration - - ParticipantId - - The ID of this participant - * - - - - - - - - - ParticipantType - - The type of the participant, maps to the capabilities of the participant in Control Loop Type - Definitions - * - - - - - - - - - Result - - Success/Fail - * - - - - - - - - - Message - - Message indicating reason for failure - * - ParticipantUpdate - - CLAMP Runtime - - Participant - - CLAMP Runtime sends Control Loop Element Definitions and Common Parameter Values to Participants - - ParticipantDefinitionUpdateMap - - Map with Participant ID as its key, each value on the map is a ControlLoopElementDefintionMap - * - - - - - - - - - ControlLoopElementDefintionMap - - List of ControlLoopElementDefinition values for a particular participant, keyed by its Control - Loop Element Definition ID - * - - - - - - - - - ControlLoopElementDefinition - - A ControlLoopElementToscaServiceTemplate containing the definition of the Control Loop Element - and a CommonPropertiesMap with the values of the common property values for Control Loop Elements - of this type - * - - - - - - - - - ControlLoopElementToscaServiceTemplate - - The definition of the Control Loop Element in TOSCA - * - - - - - - - - - CommonPropertiesMap - - A <String, String> map indexed by the property name. Each map entry is the serialized value of - the property, which can be deserialized into an instance of the type of the property. - * - ParticipantUpdateAck - - Participant - - CLAMP Runtime - - Acknowledgement of Participant Update - - ParticipantId - - The ID of this participant - * - - - - - - - - - ParticipantType - - The type of the participant, maps to the capabilities of the participant in Control Loop Type - Definitions - * - - - - - - - - - Result - - Success/Fail - * - - - - - - - - - Message - - Message indicating reason for failure - * - ParticipantDeregister - - Participant - - CLAMP Runtime - - Participant deregisters with the CLAMP runtime - - ParticipantId - - The ID of this participant - * - - - - - - - - - ParticipantType - - The type of the participant, maps to the capabilities of the participant in Control Loop Type - Definitions - * - ParticipantDeregisterAck - - CLAMP Runtime - - Participant - - Acknowledgement of Participant Deegistration - - ParticipantId - - The ID of this participant - * - - - - - - - - - ParticipantType - - The type of the participant, maps to the capabilities of the participant in Control Loop Type - Definitions - * - - - - - - - - - Result - - Success/Fail - * - - - - - - - - - Message - - Message indicating reason for failure - * - ControlLoopUpdate - - CLAMP Runtime - - Participant - - CLAMP Runtime sends Control Loop Element instances and Instance Specific Parameter Values for - a Control Loop Instance to Participants - - ControlLoopId - - The name and version of the Control Loop - * - - - - - - - - - ParticipantUpdateMap - - Map with Participant ID as its key, each value on the map is a ControlLoopElementList - * - - - - - - - - - ControlLoopElementList - - List of ControlLoopElement values for the Control Loop - * - - - - - - - - - ControlLoopElement - - A ControlLoopElement, which contains among other things a PropertiesMap with the values of the - property values for this Control Loop Element instance and a ToscaServiceTemplateFragment with - extra concept definitions and instances that a participant may need. - * - - - - - - - - - PropertiesMap - - A <String, String> map indexed by the property name. Each map entry is the serialized value of - the property, which can be deserialized into an instance of the type of the property. - * - - - - - - - - - ToscaServiceTemplateFragment - - A well-formed TOSCA service template containing extra concept definitions and instances that a - participant may need. For example, the Policy Participant may need policy type definitions or - policy instances to be provided if they are not already stored in the Policy Framework. - * - ControlLoopUpdateAck - - Participant - - CLAMP Runtime - - Acknowledgement of Control Loop Update - - ParticipantId - - The ID of this participant - * - - - - - - - - - ParticipantType - - The type of the participant, maps to the capabilities of the participant in Control Loop Type - Definitions - * - - - - - - - - - ControlLoopId - - The name and version of the Control Loop - * - - - - - - - - - ControlLoopResult - - Holds a Result and Message for the overall operation on the participant and a map of Result - and Message fields for each Control Loop Element of the control loop on this participant - * - - - - - - - - - Result - - Success/Fail - * - - - - - - - - - Message - - Message indicating reason for failure - * - ControlLoopStateChange - - CLAMP Runtime - - Participant - - CLAMP Runtime asks Participants to change the state of a Control Loop - - ControlLoopId - - The name and version of the Control Loop - * - - - - - - - - - currentState - - The current state of the Control Loop - * - - - - - - - - - orderedState - - The state that the Control Loop should transition to - * - - - - - - - - - startPhase - - The start phase to which this ControLoopStateChange message applies - * - ControlLoopStateChangeAck - - Participant - - CLAMP Runtime - - Acknowledgement of Control Loop State Change - - ParticipantId - - The ID of this participant - * - - - - - - - - - ParticipantType - - The type of the participant, maps to the capabilities of the participant in Control Loop Type - Definitions - * - - - - - - - - - ControlLoopId - - The name and version of the Control Loop - * - - - - - - - - - startPhase - - The start phase to which this ControLoopStateChangeAck message applies - * - - - - - - - - - ControlLoopResult - - Holds a Result and Message for the overall operation on the participant and a map of Result and - Message fields for each Control Loop Element of the control loop on this participant - * - - - - - - - - - Result - - Success/Fail - * - - - - - - - - - Message - - Message indicating reason for failure - * - ParticipantStatusReq - - CLAMP Runtime - - Participant - - Request that the specified participants return a ParticipantStatus message immediately - - ParticipantId - - The ID of this participant, if not specified, all participants respond. - * - ParticipantStatus - - Participant - - CLAMP Runtime - - Periodic or on-demand report for heartbeat, Participant Status, Control Loop Status, and Control - Loop Statistics - - ParticipantId - - The ID of this participant - * - - - - - - - - - ParticipantType - - The type of the participant, maps to the capabilities of the participant in Control Loop - Type Definitions - * - - - - - - - - - ParticipantDefinitionUpdateMap (returned in repsonse to ParticipantStatusReq only) - - See ParticipantUpdate message above for definition of this field - * - - - - - - - - - ParticipantStatus - - The current status of the participant for monitoring - * - - - - - - - - - ParticipantStatistics - - Statistics on the participant such as up time, or messages processed. Can include participant - specific data in a string blob that is opaque to CLAMP - * - - - - - - - - - ControlLoopInfoMap - - A map of ControlLoopInfo types indexed by ControlLoopId, one entry for each control loop - running on the participant - * - - - - - - - - - ControlLoopInfo - - The ControlLoopStatus and ControlLoopStatistics for a given control loop - * - - - - - - - - - ControlLoopStatus - - The current status of the control loop for monitoring - * - - - - - - - - - ControlLoopStatistics - - Statistics on the control loop such as up time, or messages processed. Can include participant - specific data in a string blob that is opaque to CLAMP - - -End of Document |