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diff --git a/requirements/resource_management/05-impl.rst b/requirements/resource_management/05-impl.rst new file mode 100755 index 0000000..7bbaa0c --- /dev/null +++ b/requirements/resource_management/05-impl.rst @@ -0,0 +1,534 @@ +Detailed architecture and message flows +======================================= + +Detailed northbound interface specification +------------------------------------------- + +.. Note:: + Once the output of the work from ETSI NFV IFA has been made publicly + available, the UML diagrams and REST/JSON examples in this section will be + extended + +Resource Capacity Management +^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +Subscribe Capacity Change Event +_______________________________ + +**SubscribeRequest (Consumer -> VIM)** + +.. uml:: + + @startuml + class SubscribeRequest { + + zone [0..N]: Identifier + + attributes [0..1]: String + + resourceItems [0..1]: String + + thresholds [0..N]: String + + notificationId [0..1]: Identifier + } + @enduml + +Subscription from Consumer to VIM to be notified about capacity changes. +Input Parameters: + +* Zone [0..N]: Identification of the zone(s) to notify regarding capacity + change events +* Attributes [0..1]: Attributes of resource items to be notified regarding + capacity change events +* ResourceItems [0..1]: Identifiers of existing resource items to be notified + regarding capacity change events (such as images, flavors, virtual + containers, networks, physical machines, etc.) +* Thresholds [0..N]: Lower/Upper limits for triggering change event for + used/reserved/total capacity change for specified resource items +* NotificationId [0..1]: Identification of existing capacity change event + notification issued by the VIM. When specified. The previously defined + conditions for change event notifications wil be re-used and notification + sent to the additional requestor. + +Application/json:: + + { + "zone": ["opnfv-JP8", "opnfv-JP9"], + "resourceitems": "numvcinstances" + } + +**SubscribeReply (VIM -> Consumer)** + +.. uml:: + + @startuml + class SubscribeReply { + + subscriptionId [1]: Identifier + + created [1]: DateTime + + message [0..1]: String + } + @enduml + +Reply Parameters: + +* subscriptionId (Identifier): Identification of the capacity change event + notification issued by the VIM. +* created (DateTime): Timestamp when subscription has been created +* m essage [0..1] (String): Output message that provides additional information + about the subscribe request + +Application/json:: + + { + "created": "2015-03-23T00:00:01Z", + "notificationId": "abcdef-ghijkl-123456789" + } + +Query Resource Capacity +_______________________ + +**QueryRequest (NFVO -> VIM)** + +.. uml:: + + @startuml + class QueryCapacityRequest { + + capacityQueryFilter [0..1]: CapacityQueryFilterClass + } + + class CapacityQueryFilter { + + zone [0..1]: Identifier + + resourceItems [0..1]: String + + flavorID [0..1]: Identifier + + timePeriod [0..1]: DateTime + } + + QueryCapacityRequest "1" *- "0..1" CapacityQueryFilter : "" + @enduml + +.. -* + +Request to find out about used, reserved and total capacity. +A CapacityQueryFilter can be used to narrow down the capacity details returned +in the response message. + +Input Parameters: + +* capacityQueryFilter (CapacityQueryFilterClass): Optional information to + narrow down the QueryCapacityRequest, for example to limit the query to given + resource items, or a given resource zone. The capacityQueryFilter can also + include a FlavorId or template ID. In this case, the QueryCapacity is a + request to obtain information of the number of virtual resources that can be + instantiated according to this flavor with the actual available capacity. + A timePeriod can be specified to narrow down the query to a certain period of time. + +Application/json:: + + { + "capacityqueryfilter": { + "resourceitems": "numvcinstances,virtualmemorysize", + "zone": "opnfv-JP7" + } + } + +**QueryReply (VIM -> NFVO)** + +.. uml:: + + @startuml + class QueryCapacityReply { + + capacityInformation [0..N]: CapacityInformationClass + + zone [0..1]: Identifier + + lastUpdate [0..1]: DateTime + + message [0..1]: String + } + + QueryCapacityReply "1" *- "0..N" CapacityInformationClass : "" + @enduml + +.. -* + +Reply Parameters: + +* capacityInformation [0..N] (CapacityInformationClass): Capacity information + matching the CapacityQueryFilter specified in the QueryCapacityRequest +* Zone [0..1] (Identifier): Identification of the resource zone +* lastUpdate [0..1] (DateTime): Timestamp of the capacity last update +* message [0..1] (String): Output message that provides additional information + about the query capacity request + +Application/json:: + + { + "capacityInformation": { + "numvcinstances": { + "used": 5, + "reserved": 1, + "total": 10 + }, + "virtualmemorysize": { + "used": 4, + "reserved": 6, + "total": 16 + } + }, + "zone":"opnfv-JP7", + "lastUpdate":"2015-03-23T00:00:00Z" + } + +Notify Capacity Change Event +____________________________ + +**CapacityChangeNotification (VIM -> Consumer)** + +.. uml:: + + @startuml + class CapacityChangeNotification { + + capacityInformation [0..1]: CapacityInformationClass + + zone [0..1]: Identifier + + notificationTime [1]: DateTime + + notificationId [1]: Identifier + } + + CapacityChangeNotification "1" *- "0..1" CapacityInformationClass : "" + @enduml + +.. -* + +Notification about capacity changes + +Notify Parameters: + +* capacityInformation [0..1] (CapacityInformationClass): Capacity information + matching a given subscription request defined by the Consumer +* zone [0..1] (Identifier): Identification of the resource zone +* notificationTime [1] (DateTime): Timestamp when the capacity change is + detected +* notificationId [1]: Identification of the capacity change event notification + issued by the VIM. + +Application/json:: + + { + "capacity": { + "numvcinstances": { + "used": 16, + "reserved": 2, + "total": 20 + } + }, + "zone": "opnfv-JP8", + "notificationTime":"2015-03-23T12:00:05Z", + "notificationId":"abcdef-ghijkl-123456789" + } + +Resource Reservation +^^^^^^^^^^^^^^^^^^^^ + +Create Resource Reservation +___________________________ + +**CreateResourceReservationRequest (NFVO -> VIM)** + +.. uml:: + + @startuml + class CreateResourceReservationRequest { + + start [0..1]: DateTime + + end [0..1]: DateTime + + expiry [0..1]: DateTime + + virtualizationContainerReservation [0..N]: VirtualizationContainerReservationClass + + computePoolReservation [0..1]: ComputePoolReservationClass + + storagePoolReservation [0..1]: StoragePoolReservationClass + + networkReservation [0..1]: NetworkReservationClass + + zone [0..1]: Identifier + } + + class VirtualizationContainerReservationClass { + + containerId [1]: Identifier + + flavor [0..1]: FlavorClass + } + + CreateResourceReservationRequest "1" *- "0..N" VirtualizationContainerReservationClass : "" + VirtualizationContainerReservationClass "1" *-- "0..1" FlavorClass + CreateResourceReservationRequest "1" *-- "0..1" ComputePoolReservationClass + CreateResourceReservationRequest "1" *-- "0..1" StoragePoolReservationClass + CreateResourceReservationRequest "1" *-- "0..1" NetworkReservationClass + @enduml + +.. -* + +**CreateResourceReservationReply (VIM -> NFVO)** + +.. uml:: + + @startuml + class CreateResourceReservationReply { + + reservationId [1]: Identifier + + virtualizationContainerReserved [0..N]: VirtualizationContainerReservedClass + + computePoolReserved [0..1]: ComputePoolReservedClass + + storagePoolReserved [0..1]: StoragePoolReservedClass + + networkReserved [0..1]: NetworkReservedClass + + reservationStatus [1]: String + + startTime [0..1]: Time + + endTime [0..1]: Time + + message [0..1]: String + } + + class VirtualizationContainerReservedClass { + + containerId [1]: Identifier + + flavor [0..1]: FlavorClass + } + + CreateResourceReservationReply "1" *- "0..N" VirtualizationContainerReservedClass : "" + VirtualizationContainerReservedClass "1" *-- "0..1" FlavorClass + CreateResourceReservationReply "1" *-- "0..1" ComputePoolReservedClass + CreateResourceReservationReply "1" *-- "0..1" StoragePoolReservedClass + CreateResourceReservationReply "1" *-- "0..1" NetworkReservedClass + @enduml + +.. -* + +Subscribe / Notify Reservation Event +____________________________________ + +**SubscribeRequest (Consumer -> VIM)** + +.. uml:: + + @startuml + class SubscribeRequest { + + reservationId [1]: Identifier + + eventType [0..1]: String + } + @enduml + +**SubscribeReply (VIM -> Consumer)** + +.. uml:: + + @startuml + class SubscribeReply { + + notificationId [1]: Identifier + + created [1]: DateTime + + message [0..1]: String + } + @enduml + +**NotifyReservationEvent (VIM -> Consumer)** + +.. uml:: + + @startuml + class ReservationEventNotification { + + notificationId [1]: Identifier + + reservationId [1]: Identifier + + notificationTime [1]: DateTime + + vimId [1]: Identifier + + eventType [1]: String + + eventDetails [1]: String + + message [0..1]: String + } + @enduml + +Query Resource Reservation +__________________________ + +**QueryResourceReservationRequest (Consumer -> VIM)** + +.. uml:: + + @startuml + class QueryResourceReservationRequest { + + reservationQueryFilter [0..1]: ReservationQueryFilterClass + } + + QueryResourceReservationRequest "1" *- "0..1" ReservationQueryFilterClass : "" + @enduml + +.. -* + +**QueryResourceReservationReply (VIM -> Consumer)** + +.. uml:: + + @startuml + class CreateResourceReservationReply { + + reservationId [1]: Identifier + + virtualizationContainerReserved [0..N]: VirtualizationContainerReservedClass + + computePoolReserved [0..1]: ComputePoolReservedClass + + storagePoolReserved [0..1]: StoragePoolReservedClass + + networkReserved [0..1]: NetworkReservedClass + + reservationStatus [1]: String + + message [0..1]: String + } + + class VirtualizationContainerReservedClass { + + containerId [1]: Identifier + + flavor [0..1]: FlavorClass + } + + CreateResourceReservationReply "1" *- "0..N" VirtualizationContainerReservedClass : "" + VirtualizationContainerReservedClass "1" *-- "0..1" FlavorClass + CreateResourceReservationReply "1" *-- "0..1" ComputePoolReservedClass + CreateResourceReservationReply "1" *-- "0..1" StoragePoolReservedClass + CreateResourceReservationReply "1" *-- "0..1" NetworkReservedClass + @enduml + +.. -* + +Update Resource Reservation +___________________________ + +**UpdateResourceReservationRequest (NFVO ->VIM)** + +.. uml:: + + @startuml + class UpdateResourceReservationRequest { + + reservationId [1]: Identifier + + start [0..1]: DateTime + + end [0..1]: DateTime + + expiry [0..1]: DateTime + + virtualizationContainerReservation [0..N]: VirtualizationContainerReservationClass + + computePoolReservation [0..1]: ComputePoolReservationClass + + storagePoolReservation [0..1]: StoragePoolReservationClass + + networkReservation [0..1]: NetworkReservationClass + + zone [0..1]: Identifier + } + + class VirtualizationContainerReservationClass { + + containerId [1]: Identifier + + flavor [0..1]: FlavorClass + } + + UpdateResourceReservationRequest "1" *- "0..N" VirtualizationContainerReservationClass : "" + VirtualizationContainerReservationClass "1" *-- "0..1" FlavorClass + UpdateResourceReservationRequest "1" *-- "0..1" ComputePoolReservationClass + UpdateResourceReservationRequest "1" *-- "0..1" StoragePoolReservationClass + UpdateResourceReservationRequest "1" *-- "0..1" NetworkReservationClass + @enduml + +.. -* + +**UpdateResourceReservationReply (VIM -> NFVO)** + +.. uml:: + + @startuml + class UpdateResourceReservationReply { + + reservationId [1]: Identifier + + virtualizationContainerReserved [0..N]: VirtualizationContainerReservedClass + + computePoolReserved [0..1]: ComputePoolReservedClass + + storagePoolReserved [0..1]: StoragePoolReservedClass + + networkReserved [0..1]: NetworkReservedClass + + reservationStatus [1]: String + + message [0..1]: String + } + + class VirtualizationContainerReservedClass { + + containerId [1]: Identifier + + flavor [0..1]: FlavorClass + } + + UpdateResourceReservationReply "1" *- "0..N" VirtualizationContainerReservedClass : "" + VirtualizationContainerReservedClass "1" *-- "0..1" FlavorClass + UpdateResourceReservationReply "1" *-- "0..1" ComputePoolReservedClass + UpdateResourceReservationReply "1" *-- "0..1" StoragePoolReservedClass + UpdateResourceReservationReply "1" *-- "0..1" NetworkReservedClass + @enduml + +.. -* + +Release Resource Reservation +____________________________ + +**ReleaseResourceReservationRequest (NFVO -> VIM)** + +.. uml:: + + @startuml + class ReleaseResourceReservationRequest { + + reservationId [1]: Identifier + } + @enduml + +**ReleaseResourceReservationReply (VIM -> NFVO)** + +.. uml:: + + @startuml + class ReleaseResourceReservationReply { + + reservationId [1]: Identifier + + message [0..1]: String + } + @enduml + + +Detailed Message Flows +---------------------- + +Resource Capacity Management +^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +.. figure:: images/figure5.png + :width: 90% + + Capacity Management Scenario + +Figure 5 shows a detailed message flow between the consumers and the +functionalblocks inside the VIM and has the following steps: + +Step 1: The consumer subscribes to capacity change notifications + +Step 2: The Capacity Manager monitors the capacity information for the various +types of resources by querying the various Controllers (e.g. Nova, Neutron, +Cinder), either periodically or on demand and updates capacity information in +the Capacity Map + +Step 3: Capacity changes are notified to the consumer + +Step 4: The consumer queries the Capacity Manager to retrieve capacity detailed +information + +Resource Reservation +^^^^^^^^^^^^^^^^^^^^ + +.. figure:: images/figure6.png + :width: 90% + + Resource Reservation for Future Use Scenario + +Figure 6 shows a detailed message flow between the consumers and the functional +blocks inside the VIM and has the following steps: + +Step 1: The consumer creates a resource reservation request for future use by +setting a start and end time for the allocation + +Step 2: The consumer gets an immediate reply with a reservation status message +"reservationStatus" and an identifier to be used with this reservation instance +"reservationID" + +Step 3: The consumer subscribes to reservation notification events + +Step 4: The Resource Reservation Manager checks the feasibility of the +reservation request by consulting the Capacity Manager + +Step 5: The Resource Reservation Manager reserves the resources and stores the +list of reservations IDs generated by the Controllers (e.g. Nova, Neutron, +Cinder) in the Reservation Map + +Step 6: Once the reservation process is completed, the VIM sends a notification +message to the consumer with information on the reserved resources + +Step 7: When start time arrives, the consumer creates a resource allocation +request. + +Step 8: The consumer gets an immediate reply with an allocation status message +"allocationStatus". + +Step 9: The consumer subscribes to allocation notification events + +Step 10: The Resource Allocation Manager allocates the reserved resources. If +not all reserved resources are allocated before expiry, the reserved resources +are released and a notification is sent to the consumer + +Step 11: Once the allocation process is completed, the VIM sends a notification +message to the consumer with information on the allocated resources |