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Diffstat (limited to 'docs/manual_use_case.rst')
| -rw-r--r-- | docs/manual_use_case.rst | 173 |
1 files changed, 164 insertions, 9 deletions
diff --git a/docs/manual_use_case.rst b/docs/manual_use_case.rst index 6bf2023..ce0cafc 100644 --- a/docs/manual_use_case.rst +++ b/docs/manual_use_case.rst @@ -12,19 +12,178 @@ See the License for the specific language governing permissions and limitations under the License. -.. contents:: - :local: - Manual Scale Out Use Case ========================= +.. contents:: Table of Contents + :depth: 4 + :backlinks: entry + + +Overview +-------- + In the Casablanca release, ONAP will support the ability to both manually and automatically scale out a VNF component. Below is the sequence diagram for how scaling will work. -|scale_out_design_time| -|scale_out_run_time| +Design Time Diagram +^^^^^^^^^^^^^^^^^^^ + +.. uml:: + :align: center + :caption: **Scale Out Sequence Diagram** - Design Time + + @startuml + + title Message Style - Scale Out Sequence Diagram - Design Time + + skinparam sequenceMessageAlign center + + Participant "Service Designer" as SD + Participant SDC + Participant CLAMP + Participant CDT + Participant APPC + Participant SDNC + Participant Policy + Participant SO + Participant DCAE + + SD -> SDC: <back:white>Onboarding Package</back> + SD -> SDC: <back:white>Set Scaling Parameters</back> + + SDC -> SO: <back:white>Send Heat Templates and Image Files</back> + SDC -> SDNC: <back:white>Send Heat Templates and Image Files</back> + SDC -> SDNC: <back:white>Send Preload files</back> + SDC -> DCAE: <back:white>Threshold Scaling Events</back> + + SD -> CLAMP: <back:white>Gaurd Policies</back> + SD -> CLAMP: <back:white>Operational Policies</back> + SD -> CLAMP: <back:white>Configuration Data</back> + + CLAMP -> Policy: <back:white>Send Policies to Policy Engine Including VNF Configuration Data and VF_Module Name</back> + + SD -> CDT: <back:white>Parameter definition template for each LCM action (ConfigScaleOut, Healthcheck)</back> + + CDT -> APPC: <back:white>Save Parameter Definition Template to APPC</back> + + @enduml + + + +Run Time Diagram +^^^^^^^^^^^^^^^^ + +.. uml:: + :align: center + :caption: **Scaling Use Case Sequence Diagram** - Run Time + + @startuml + + title Message Style - Scaling Use Case Sequence Diagram - Run Time + + skinparam sequenceMessageAlign center + + Participant DCAE + Participant Policy + Participant VID + Participant SO + Participant Controller + Participant SDNC + Participant AAI + Participant VNF + + group Manual Scaling + VID -> SO: Manual Scale Out Request\n(Via DMaaP) + end + + group Closed Loop Scaling + DCAE -> Policy: Trigger Scale Out Event + activate Policy + ||| + Policy -> Policy: Sanity Check (Guard Policies) + ||| + Policy -> SO: <back:white>Closed Loop Scale Out Request</back> + deactivate Policy + activate SO + end + + group Healthcheck + SO -> AAI: <back:white>Retrieve VNF Level ipv4-oam-address</back> + note left + Prerequisite: Heatbridge will update + AAI with all IP addresses on initial + instantiation + end note + AAI -> SO: <back:white>Return VNF Level ipv4-oam-address</back> + ||| + SO -> SO: Controller Look up + activate Controller + SO -> Controller: Healthcheck + Controller -> VNF: Healthcheck (REST) + deactivate Controller + end + + group Instantiation + SO -> AAI: Create VF-Module in AAI + note left + Homing and Capacity is + not shown in this + diagram. If H&C check is + done then SO will call + OOF prior to calling + SDNC for resource + assignment. + end note + activate AAI + deactivate AAI + SO -> SDNC: <back:white>VF-Module Resource Assignment</back> + activate SDNC + SDNC -> SDNC: Heat & Resource Assignment + ||| + SDNC -> AAI: Create VF-Module Relationship & Retrieve Networks + deactivate SDNC + SO -> VNF: <back:white>Create VF_Module in Cloud environment via Heatstack</back> + note left + SO will call the Rainy Day + Handling and/or Manual + Handling building blocks + whenever it detects a + failure in the WorkFlow + end note + SO -> AAI: Update the Heatstack ID + end + + group Configuration + SO -> SDNC: <back:white>Request Configuration Parameter Values</back> + SDNC -> SO: <back:white>Return Configuration Parameter Values</back> + ||| + SO -> SO: Build ConfigScaleOut Payload + SO -> SO: Contoller Look up + SO -> Controller: ConfigScaleOut + activate Controller + Controller -> Controller: Construct VNF ScaleOut Request + Controller -> VNF: Configure VNF (Netconf) + deactivate Controller + end + + group Healthcheck + SO -> AAI: <back:white>Retrieve VNF Level ipv4-oam-address</back> + AAI -> SO: <back:white>Return VNF Level ipv4-oam-address</back> + ||| + SO -> SO: Controller Look up + activate Controller + SO -> Controller: Healthcheck + Controller -> VNF: Healthcheck (REST) + deactivate Controller + deactivate SO + end + + @enduml + + Description of Workflow ----------------------- @@ -85,7 +244,3 @@ support the following functionality: 3. Configuration of the VNF must be done via NETCONF, Chef, or Ansible as described in the :ref:`vnf_configuration_management` - -.. |scale_out_design_time| image:: manual_scale_out_design_time.png - -.. |scale_out_run_time| image:: manual_scale_out_run_time.png |