Create 'bulk' version for org.onap.cps.ncmp.rest.controller.NetworkCmProxyController#getResourceDataForCmHandle to support multiple cm-handles (~ multiple anchors in in CPS-Core)
References
CPS-1515 - Spike: Support multiple CM-Handles for NCMP Get Operation
Assumptions<optional>
<optional, assumptions are like decision made up front ie. everyone agrees on the answer but they are important to mention>
# | Assumption | Notes |
---|---|---|
1 | "fields" and "scope" are proprietary options or not in the scope of this analysis. | |
2 |
Issues & Decisions
# | Issue | Notes | Decision |
---|---|---|---|
1 | Which operation(s) need support for multiple cm handles? |
if many what is the priority? | |
2 | Do we need to use same xpath (resourceIdentifierInQuery) for all cm handles or different for each cm handle ? | ||
3 | Which datasources ? | Do we need to support passthrough-only no-cached() data only ? or, alternatively, support operational/running (cached) data too ? | |
4 | Endpoint url patterns? | Existing : /v1/ch/{cm-handle}/data/ds/{datastore-name} CPS Proposed : /v1/batch/data/ds/{datastore-name} ( include cm handles into payload / body and leave datastore into url) | |
5 | keep datastore, topic and optional parameters in the URL itself instead into body. | CPS prefers keep interface similar as single cm handle interface (consistency and cost) Existing : ...&topic=topicParamInQuery | |
6 | Impacts on DMI Plugin Interfaces
| ||
7 | How we are supporting multiple anchors into CPS-Core ?
| ||
8 | Response always Async ie. topic is compulsory ?
| ||
9 | Should NCMP Amalgamate Async responses from DMI-Plugin before forwarding ? | step 6 in flow diagram | |
10 | Overlap with Deutsche Telekom | Sourabh Sourabh discussed Lee Anjella Macabuhay who confirmed there s no overlap | No Overlap |
<Note. use green for closed issues, yellow for important ones if needed>
Implementation
Bulk Request Message Flow
Message Flow details
Short description | Message Details | Notes |
---|---|---|
Bulk Get Request | Define new get operation "getResourceDataForCmHandles" into ncmp.yml | |
Ack Client Request | ||
DMI Bulk Request | ||
Ack Client Request | ||
Kafka Messages from DMI to NCMP | ||
Kafka Message(s) from NCMP to Client | see open issue #9 |
< we do not want to dictate the remainder of an analysis it will depend on the type of user story at hand>
Note : Overlap with Deutsche Telecom (check with Lee Anjella Macabuhay there is no overlap)