CPS-1065 Spike: CM data notifications from NCMP to applications including subscriptions

References

CPS-1065 - Getting issue details... STATUS

Open Issues & Decisions

#	Issue	Notes	Decision
1	List scenarios	Need to clarify scenarios	Refer to Internal study
2	Topics	what topics are used in what scenario (topic for each Datastore ?)	Refer to Internal study
3	Handle unknown event schemas	Wrap event?

Event Flow Sketch

CM Event Specification Outline

{

  "eventId"          : "9999",           # some generic event uuid generated by DMI Plugin
“eventCorrelationId”      : “cmhandleId-001”, # cmhandleId used for event correlation
"eventTime"          : "2021-11-16T16:42:25-04:00",
  "eventSource"           : "org.onap.ncmp",
  "eventType"           : "org.onap.ncmp.cm-notification-event", # event type for async request response events
  ”eventSchema” : “org.onap.ncmp:cm-notification-event",       # event schema for async request response events
  ”eventSchemaVersion” : “v1", # event schema version

"event": {
<RFC 8641-yang-datastore-notification-payload> # See next slide for example
}

}

RFC 8641 : yang-datastore notification definition

notifications:

+---n push-update

| +--ro id? sn:subscription-id

| +--ro datastore-contents? <anydata>

| +--ro incomplete-update? empty

+---n push-change-update {on-change}?

+--ro id? sn:subscription-id

+--ro datastore-changes

| +--ro yang-patch

| +--ro patch-id string

| +--ro comment? string

| +--ro edit* [edit-id]

| +--ro edit-id string

| +--ro operation enumeration

| +--ro target target-resource-offset

| +--ro point? target-resource-offset

| +--ro where? enumeration

| +--ro value? <anydata>

+--ro incomplete-update? empty

'operation' type definition

Event Payload Example

Proposed CM event

{

  "eventId" : "9999", # some generic event uuid generated by DMI Plugin
“eventCorrelationId” : “cmhandleId-001”, # cmhandleId used for event correlation
"eventTime" : "2021-11-16T16:42:25-04:00",
  "eventSource" : "org.onap.ncmp",
  "eventType" : "org.onap.ncmp.cm-notification-event", # event type
  ”eventSchema” : “org.onap.ncmp:cm-notification-event", # event schema
”eventSchemaVersion” : “v1", # event schema version

"event": {

"push-change-update" : {

"datastore-changes" : {
"ietf-yang-patch:yang-patch" : {
"patch-id" : "34534ffd98", # Some unreadable patch id generated by the machine
"edit" : [
{
"edit-id" : "ded43434-1",
"operation" : "create",
"target" : "/_3gpp-common-managed-element:ManagedElement=Kista-001/_3gpp-nr-nrm-gnbdufunction:GNBDUFunction=1/_3gpp-nr-nrm-nrcelldu:NRCellDU=1",
"value" : {
"_3gpp-nr-nrm-nrcelldu:NRCellDU" : [
{
"id" : 1,
}
]
}
},

{
"edit-id" : "ded43434-1-1",
"operation" : "create",
"target" : "/_3gpp-common-managed-element:ManagedElement=Kista-001/_3gpp-nr-nrm-gnbdufunction:GNBDUFunction=1/_3gpp-nr-nrm-nrcelldu:NRCellDU=1/attributes",
"value" : {
"attributes" : {
"cId" : 511,
"userLabel" : "some-cell-label",
...
}
}
},

{
"edit-id" : "ded43434-2",
"operation" : "create",
"target" : "/_3gpp-common-managed-element:ManagedElement=Kista-001/_3gpp-nr-nrm-gnbdufunction:GNBDUFunction=1/_3gpp-nr-nrm-nrcelldu:NRCellDU=1/attributes/pLMNIdList=35301",
"value" : {
"_3gpp-nr-nrm-nrcelldu:pLMNIdList" : [
{
"mcc" : 353,
"mnc" : "01",
...

}

}
]
}
},
{
"edit-id" : "ded43434-3",
"operation" : "merge",
"target" : "/_3gpp-common-managed-element:ManagedElement=Kista-001/_3gpp-nr-nrm-gnbdufunction:GNBDUFunction=1/_3gpp-nr-nrm-nrcelldu:NRCellDU=3/attributes",
"value" : {
"attributes" :
{
"cId" : 412,
"userLabel" : "yet-another-cell-label",
...
}
}
},
{
"edit-id" : "ded43434-4",
"operation" : "delete",
"target" : "/_3gpp-common-managed-element:ManagedElement=Kista-001/_3gpp-nr-nrm-gnbdufunction:GNBDUFunction=1/_3gpp-nr-nrm-nrcelldu:NRCellDU=4"
}
]
}
}
}

}
}

Topics

Four main topic types

- ncmp-cm-notification-event-

Subscription Proposal

TBD

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