Page Comparison

Table of Contents

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This page gives a description of CPS events including their fields
Events will be split into events and Kafka headers

Issues & Decisions

# wil

# Description Notes Decision

1

No Event properties defined for DMI AVC Event

Priyank Maheshwari will need to specify and agreed event structure for DMI AVC Event with stakeholders ie. provide Jira ticket

Event Body should be compatible with RFC8641

kieran mccarthy has confirmed.

Priyank Maheshwari created JIRA to create the event body schema.

2

Bulk Operation events details have not yet be defined (just headers)

Sourabh Sourabh to provide Jira tickets

Jira Legacy

server	System Jira
serverId	4733707d-2057-3a0f-ae5e-4fd8aff50176
key	CPS-1658

3

Should all the events have same kafka headers

kieran mccarthy 26 Apr 2023 Posissbly Possibly Common (base) set of headers but mandatory aspect might differ. In practice we might need a separate headers (shemaschema?) for each event

4

Clarify the format of the version eventSchemaVersion

~~v1 or 1.0~~

EX: 1.0.0 (without 'v')

kieran mccarthy to check ORAN preference

kieran mccarthy confirms through email on 12 May 2023 to use semantic versioning which ORAN follows https://semver.org.

5

What to do with additional event headers (from DMI Plugins)

kieran mccarthy 26 Apr 2023 if DMI produce Additional additional headers NCMP will discard those iei.e. not included in forwarded events

6

Event(Content) field in DMI Async Request Response Event has inconsistent name (compared with other schemas)

Add V2 file
Deprecate V1
Support both versions for a while
Delete the V1 version (after some time )

CPS Team 27 Apr 2023 Create Create a V2 of the schema and rename eventContent as ~~event~~ data. Do it as part of the schema addition.

7

NCMP Async Request Response Event (#5) contains both an Event and ForwardedEvent

ForwardedEvent is not wrapped inside Event but question now is if we need 2 events at all?!

Sourabh Sourabh and RAVITEJA KARUMURI (EST) can check how it is actually working and then we decide ( create a JIRA ticket )

Wiki for the Study on NCMPAsyncRequestResponse event schema

Conclusion: events not designed as proposed, very inconsistent. Never go a bug because these async events aren't used at all (confirmed by Csaba Koscis) Instead bulk request wil be used for topology use cases.

10 May 2023 kieran mccarthy and team agreed to:

Temporary disable the legacy async request feature (task created:
Jira Legacy
server System Jira
serverId 4733707d-2057-3a0f-ae5e-4fd8aff50176
key CPS-1694
)
Aas As part of a lower priority work items (but during Montreal) fix related events with learnings from the new batch-usecase. (task created
Jira Legacy
server System Jira
serverId 4733707d-2057-3a0f-ae5e-4fd8aff50176
key CPS-1693
)

8

Dmi Data AVC Event, use of eventSource field

Priyank Maheshwari wanted to store 'datastore' in this field but kieran mccarthy explained it to use for different purposes

kieran mccarthy Clients can use this field as per their requirements.

9

~~Can Kafka Headers be described with 'schema's owned and managed by NCMP~~

~~POC to follow.~~

Jira Legacy

server	System Jira
serverId	4733707d-2057-3a0f-ae5e-4fd8aff50176
key	CPS-1657

~~Defining header schema.~~

~~Integration of header with kafka.~~

~~Naming and versioning convention for the header schemas. 'id'~~

~~Does the headers schema have a version too?!~~

03 May 2023 ~~Priyank Maheshwari confirmed headers can be described with a separate schema.~~

~~Both header schema's and event schemas~~

~~will be published on https://docs.onap.org/projects/onap-cps/en/latest/cps-events.html~~

~~Header schema name and version will be maintained in the 'id' metadata field of header's schema .~~

~~Defined Common Header schema. Extended it and used in a base class~~

10

Depending #10 can schema inherit/extend a common schema for common headers

Commonly define them and then define what are mandatory(required) or optional as per the schema extending it.

If a field is not used in the extended schema then it should be able to handle it.

Extend the POC ( on #9 ) to cover this.

09 May 2023 Priyank Maheshwari did the POC and the conclusion of that was that :-

One schema can extend the other schema.
We cannot override the mandatory/optional parameter from the Parent schema.

03 May 2023 PoC ongoing

09 May 2023 Toine Siebelink agrees to go ahead with separate schema/header headers per event. There will be some duplication but it will have its advantage when versioning.

11

Is anyone using Async Request feature?

See

Jira Legacy

server	System Jira
serverId	4733707d-2057-3a0f-ae5e-4fd8aff50176
key	CPS-1660

we need to re-design event #4 (Covers Point 6 as well) and #5 in a backward incompatible way. If no-one is using this feature right now (suspected) we can do this more easily/cheaper!

03 May 2023 Csaba Kocsis confirmed this is not used by Ericsson currently. No plans to use soon for single-cmhandle requests either (TBC). Need to decide priority (Csaba Kocsis to find out of fixing the legacy schema(s)
See decision on issue #7

12 Do we need additionalProperties for DMI ASync Data Request respondes (events #4, #5) The original code populates a framework defined 'additionalProperties' field with a singel key-value pair: "response-data",{<json data>}. No other (private) properties are added either in DMI PLugin or NCMP code. The name is just coincidence and misleading. In fact this 'additionalProperties' field should NOT have been used at all! No, the new schema should NOT add 'additionalProperties' field at all use 'additionalProperties:no' in the schema

13

AVC Subscription Event (DMI → NCMP) (events #3)

Want to understand what 'data' is datatype referring to under Subscription Event?
- What value comes under 'schemaName' & 'SchemaVersion' of Datatype definition under AVC Subscription Event?
- Reconfirmation needed on 'schemaName' & 'SchemaVersion' should be in the payload?

In meeting26 Apr 2023 kieran mccarthy updated #3 is ON HOLD to analyse further.

Agreed with Toine Siebelink on18 May 2023 that Priyank Maheshwari will look into this from now as they are working on something related to this.

14

Align headers with CNCF Cloud Events

Using standard headers as defined by Cloud Events and possibly common header extension See Table below, CNFC Cloud Event alignment
CPS will use Cloud Events 3PP for all current and legacy events to ensure common format

23 May 2023 kieran mccarthyand Toine Siebelink agreed on general idea but exact list of common headers need to be agreed
Jira (first impl.) to be added!

Jira Legacy

server	System Jira
serverId	4733707d-2057-3a0f-ae5e-4fd8aff50176
key	CPS-1717

15

During the meeting we saw that the Kafka header fields were prefixed with "ce_ " so need to check if we are ok with that.

Event Overview

16	Do will still need/ can we stil use schemas for header details with CNCF library ?!	How to publish info about non-standard headers like `correlationid` ?
17	inconsistent casing convention for header v. json data	Just observing. All header ion CNCF are lowercase whereas json field are camelCase. Don't want to change but want to make sure agree...
18	Confirm 'source'. is to be added to ALL events (declared mandatory for CNFC events)

Event Overview

#	Short Name	Source	Destination	Impl. Status	Notes	Full Schema Name	Diagram Ref.
1	LCM Event	NCMP	Client Apps	In Use	Life Cycle Management Events, when cmHandles are added or removed	cps:org.onap.ncmp.cmhandle.lcm-event:v1	CM-Handle State Changes and Notifications Overview#Notificationhandlingincode
2	DMI Data AVC Event	DMI	NCMP	Implemented, Not in use	Attribute Value Change in configuration management (CM) data.	cps:org.onap.cps.ncmp.events:avc-event-schema:v1	5 in CPS Data Notifications Overview#ComponentDiagram
3	AVC Subscription Create Event	Client	NCMP & DMIs	Implemented, Not in use	Create Event Only	cps:org.onap.cps.ncmp.events:avc-subscription-event:v1	7 in CPS Data Notifications Overview#ComponentDiagram
4	DMI Async Request Response Event	DMI	NCMP	In Use	DMI passes response onto Kafka topic specified by client.	cps:org.onap.cps.ncmp.events:dmi-async-request-response-event-schema:v1	3b → 4a in CPS-821 Spike: Support Async read-write operations on CPS-NCMP interface#ProposedDesign
5	NCMP Async Request Response Event	NCMP	Client Apps	In Use	Forward No.4 to client specified topic	cps:org.onap.cps.ncmp.events:ncmp-async-request-response-event-schema:v1	4b → 5 in CPS-821 Spike: Support Async read-write operations on CPS-NCMP interface#ProposedDesign
6	Bulk Response Event (Internal)	DMI	NCMP	In Progress	Internal Kafka topic	cps:org.onap.cps.ncmp.event:dmi-async-bulk-response-event-schema:v1	5 in CPS-1515: Spike: Support Multiple CM-Handles for NCMP Get Operation (batch operations)
7	Bulk Response Event (Client)	NCMP	Client Apps	In Progress	Forwarding the DMI responses to the client topic	cps:org.onap.cps.ncmp.event:ncmp-async-bulk-response-event-schema:v1	6 in CPS-1515: Spike: Support Multiple CM-Handles for NCMP Get Operation (batch operations)

...

Expand

title	LCM Event Details

Current LCM Event Object

Field	Type	Description	Kafka Header	Notes (M=Mandatory, O=Optional)	CloudEvents Mapping
eventID	string	The unique id identifying the event	x	MMandatory	standard ( id )
eventCorrelationId	string	The id identifying the event. In LCMEvent this is always a cmhandleId	x	Optional O (extension fields will be optional now)	extension ( correlationid )
eventTime	string	The timestamp when original event occurred	x	MMandatory	standard ( time )
eventSource	string	The source of the event	x	MMandatory	standard ( source )
eventType	string	The type of the event	x	MMandatory	standard ( type )
eventSchema	string	The schema that this event adheres to.	x	MMandatory E.g. cps:org.onap.ncmp.cmhandle.lcm-event:1.0.0	standard (dataschema)
eventSchemaVersion	string	The version of the schema that this event adheres to	x	MMandatory e.g v1.0	N/A included in 'dataschema'
event	Event	The payload of an event		MMandatory	standard ( data )
N/A	N/A	The version of CNCF Specification		Specified by CNCF , seestandard (value hardcoded)	standard ( specversion )

Type:Event (cps:org.onap.ncmp.cmhandle.lcm-event:v1)

Field	Type	Description	Event Payload Field	Notes
cmHandleId	string	cmHandle id	x
oldValues	Values	Values that represents the state of a cmHandle	x	Defined by values object below
newValues	Values	Values that represents the state of a cmHandle	x	Defined by values object below

Type:Values

Field	Type	Description	Event Payload Field	Notes
dataSyncEnabled	string	cmHandle id	x
cmHandleState	string	State of cmHandle	x	Enum: ["ADVISED", "READY", "LOCKED", "DELETING", "DELETED"]
cmHandleProperties	object	cmHandle properties	x	List of Java <String, String> Maps

...

Expand

title	DMI Data AVC Event

AVC Event Object

Field	Type	Description	Kafka Header	Notes (M=Mandatory, O=Optional)	CloudEvents Mapping
eventID	string	The unique id identifying the event	x	MMandatory	standard (id)
eventCorrelationId	string	The id identifying the event	x	OOptional	extension(correlationid)
eventTime	string	The timestamp when original event occurred	x	OOptional	standard (time)
eventSource	string	The source of the event	x	O Needs clarification, see issue #8Optional	standard (source)
eventType	string	The type of the event	x	M Mandatory (e.g. cps:org.onap.cps.ncmp.events:avc-event)	standard (type)
eventSchema	string	The schema that this event adheres to	x	M Mandatory (e.g. cps:org.onap.cps.ncmp.events:avc-event-schema)	standard (dataschema)
eventSchemaVersion	string	The version of the schema that this event adheres to	x	M (e.g. v1.0 orv2.0)Mandatory	N/A included in 'dataschema'
event	Event	The payload of an event		MMandatory	standard (data)

Type: Event (cps:org.onap.cps.ncmp.events:avc-event-schema:v1)

Field	Type	Description	Kafka Header	Event Payload Field	Notes
No Properties defined (entire event treated as single object) See open issue #1 Priyank Maheshwari This is how the event will look like. CPS-1065 Spike: CM data notifications from NCMP to applications including subscriptions#EventPayloadExample

...

Expand

title	AVC Subscription Event

Subscription Event Object

Field	Type	Description	Kafka Header	Notes	CloudEvents Mapping
version	string	The event type version	X	ekiemcc : What is this version? This should be covered in the header now?	included in dataschema
eventType	string	The event type	X	ekiemcc : This is now covered by the header? Is this needed any longer in the body? Enum: ["CREATE"]	standard ( type )
source				NEW TBC, see issue #18
event	Event	The payload for an event	X	Defined by event object below	standard ( data )

Event Object (cps:org.onap.cps.ncmp.events:avc-subscription-event:v1)

Field	Type	Description	Event Payload Field	Notes
subscription	Subscription	The subscription details	x	Defined by subscription object below
dataType	DataType	The datatype content	x	Defined by dataType object below
predicates	Predicates	Additional values to be added into the subscription	x	Defined by predicates object below

Type: Subscription

Field	Type	Description	Event Payload Field	Notes
clientID	string	The client ID	x
name	string	The name of the subscription	x
isTagged	boolean	optional parameter, default is false	x	default: false

Type: DataType

Field	Type	Description	Event Payload Field
dataspace	string	The dataspace name	x
dataCategory	string	The category type of the data	x
dataProvider	string	The provider name of the data	x
schemaName	string	The name of the schema	x
schemaVersion	string	The version of the schema	x

Type: Predicates

Field	Type	Description	Event Payload Field
targets	array	CM Handles to be targeted by the subscription	x
datastore	string	datastore which is to be used by the subscription	x
xpath-filter	string	filter to be applied to the CM Handles through this event	x

...

Expand

title	DMI Async Request Response Event

DmiAsyncRequestResponse Event Object

Field	Type	Description	Kafka Header	Notes	CloudEvents Mapping
eventID	string	The unique id identifying the event generated by DMI	x		standard ( id )
eventCorrelationId	string	The request id passed by NCMP	x		extensions ( correlationid )
eventTime	string	The timestamp when original event occurred	x		standard ( time)
eventTarget	string	The target of the event	x		extensions ( target)
eventType	string	The type of the event	x		standard ( type )
eventSchema	string	The event schema for async request response events	x		standard ( dataschema )
~~eventSchemaVersion~~	~~string~~	~~The event schema version for async request response events~~	x		~~N/A included in 'dataschema'~~
eventSource	string	The source of the event	x		standard ( source )
eventContent	EventContent	The payload of an event		The name of this fields is inconsistent with all other event schemas, see issue #6	standard ( data )

Type: EventContent (cps:org.onap.cps.ncmp.events:dmi-async-request-response-event-schema:v1)

Field	Type	Description	Event Payload Field	Notes
repsonse-data-schema	string	The schema of response data	x
response-status	string	The status of the response	x
response-code	string	The code of the response	x
response-data	object	The data payload	x	contains payload of type object

...

Expand

title	NCMP Async Request Response Event

NcmpAsyncRequestResponse Event Object

Field	Type	Description	Kafka Header	Notes	CloudEvents Mapping
eventID	string	The unique id identifying the event generated by DMI	x		standard ( id )
eventCorrelationId	string	The request id passed by NCMP	x		extensions ( correlationid )
eventTime	string	The timestamp when original event occurred	x		standard ( time)
eventTarget	string	The target of the event	x		extensions ( target)
eventType	string	The type of the event	x		standard ( type )
eventSchema	string	The event schema for async request response events	x		standard ( dataschema )
eventSchemaVersion	string	The event schema version for async request response events	x		~~N/A included in 'dataschema'~~
event	Event	The payload of an event		Defined by event object below	standard ( source )
forwardedEvent	ForwardedEvent	The payload of a forwarded event		Relation to Event field unclear, do we need 2 events at all see issue #7	standard ( data )

Type: Event (cps:org.onap.cps.ncmp.events:ncmp-async-request-response-event-schema:v1)

Field	Type	Description	Event Payload Field	Notes
eventID	string	The unique id identifying the event generated by DMI	x	Only in payload in v1 of the payload schema. To be removed in v2 version (will be in the header only)
eventCorrelationId	string	The request id passed by NCMP	x	as above
eventTime	string	The timestamp when original event occurred	x	as above
eventTarget	string	The target of the event	x	as above
eventType	string	The type of the event	x	as above
eventSchema	string	The event schema for async request response events	x	as above
eventSource	string	The source of the event	x
response-data-schema	string	The received schema of response data	x
response-status	string	The received status of the response	x
response-code	string	The received code of the response	x
response-data	object	The data payload	x	contains payload of type object

Type: forwardedEvent (cps:org.onap.cps.ncmp.events:ncmp-async-request-response-event-schema:v1)

Field	Type	Description	Event Payload Field	Notes
eventID	string	The unique id identifying the event generated by DMI	?	Can NCMP put these in the header and remove them from the 'forwardedEvent'
eventCorrelationId	string	The request id passed by NCMP	?	as above
eventTime	string	The timestamp when original event occurred	?	as above
eventTarget	string	The target of the event	?	as above
eventType	string	The type of the event	?	as above
eventSchema	string	The event schema for async request response events	?	as above
eventSchemaVersion	string	The event schema version for async request response events	?	as above
eventSource	string	The source of the event	?	as above
response-data-schema	string	The received schema of response data	x
response-status	string	The received status of the response	x
response-code	string	The received code of the response	x
response-data	object	The data payload	x	contains payload of type object

Proposed New Schema:
Jira Legacy
server System Jira
serverId 4733707d-2057-3a0f-ae5e-4fd8aff50176
key CPS-1660

Field	Type	Description	Notes	CloudEvents Mapping
eventID	string	The unique id identifying the event generated by DMI		standard (id)
eventCorrelationId	string	The request id passed by NCMP		extensions(correlationid)
eventTime	string	The timestamp when original event occurred		standard (time)
eventSource	string	The source of the event	What value should contain in this? Needs clarification, see issue #8	standard (source)
eventType	string	The type of the event		standard (type)
eventSchema	string	The event schema for async request response events		standard (dataschema)
eventSchemaVersion	string	The event schema version for async request response events		N/A included in 'dataschema'
event	Event	The payload of an event	Defined by event object below	standard (data)

Type: Event (cps:org.onap.cps.ncmp.events:ncmp-async-request-response-event-schema:v1)

Field	Type	Description	Notes
eventCorrelationId	string	The request id passed by NCMP	as above @Toine asked to add this property.
responseStatus	string	The received status of the response
responseCode	string	The received code of the response
responseData	object	The data payload	contains payload of type object

...

CNCF Cloud Event alignment

Introduction

CNCF CloudEvents is a specification for describing event data in common formats to provide interoperability across services, platforms and systems.

These cloud events will be applied to all the internal and external events we have in CPS , NCMP and DMI Plugin.
Cloud events will be taking care of the fields which are part of kafka headers or part of the actual payload ( fields other than "data" are sent as kafka headers )
These CNCF cloud events will be applied to all the events listed in above sections ( LCM , DMI Data AVC etc. )

...

Before	After	CloudeEvent builder method	Example Value	Notes
eventId	id	.withId()		Mandatory
eventSource	source	.withSource()		Mandatory
N/A	specversion (default 1.0)	.v1()	1.0	Mandatory - This is the version of the cloud events
eventType	type	.withType()		Mandatory
eventTime	time	.withTime()		Optional
eventSchema	dataschema	.withDataSchema()		Optional includes the version of the schema
	datacontenttype	withDataContentType()	application/json	Optional
eventCorrelationId	correlationid	.withExtension()		Optional This will be part of the extensions field in the cloud events and all the restrictions of the attribute field naming applies to it. i.e these fields will be in the small case. This is marked as optional as it only applies to some events.
event	data	.withData(json TBC)		Mandatory actual event/payload now would be under "data" field.

...

Versions Compared

Old Version 108

New Version 109

Key

Issues & Decisions

Event Overview

Event Overview

Current LCM Event Object

Type:Event (cps:org.onap.ncmp.cmhandle.lcm-event:v1)

Type:Values

AVC Event Object

Type: Event (cps:org.onap.cps.ncmp.events:avc-event-schema:v1)

Event Object (cps:org.onap.cps.ncmp.events:avc-subscription-event:v1)

Type: Subscription

Type: DataType

Type: Predicates

Type: EventContent (cps:org.onap.cps.ncmp.events:dmi-async-request-response-event-schema:v1)

Type: Event (cps:org.onap.cps.ncmp.events:ncmp-async-request-response-event-schema:v1)

Type: forwardedEvent (cps:org.onap.cps.ncmp.events:ncmp-async-request-response-event-schema:v1)

Proposed New Schema:
Jira Legacy
server System Jira
serverId 4733707d-2057-3a0f-ae5e-4fd8aff50176
key CPS-1660

Type: Event (cps:org.onap.cps.ncmp.events:ncmp-async-request-response-event-schema:v1)

CNCF Cloud Event alignment

Introduction

Page Comparison

Versions Compared

Old Version 108

New Version 109

Key

Issues & Decisions

Event Overview

Event Overview

Current LCM Event Object

Type:Event (cps:org.onap.ncmp.cmhandle.lcm-event:v1)

Type:Values

AVC Event Object

Type: Event (cps:org.onap.cps.ncmp.events:avc-event-schema:v1)

Event Object (cps:org.onap.cps.ncmp.events:avc-subscription-event:v1)

Type: Subscription

Type: DataType

Type: Predicates

Type: EventContent (cps:org.onap.cps.ncmp.events:dmi-async-request-response-event-schema:v1)

Type: Event (cps:org.onap.cps.ncmp.events:ncmp-async-request-response-event-schema:v1)

Type: forwardedEvent (cps:org.onap.cps.ncmp.events:ncmp-async-request-response-event-schema:v1)

Proposed New Schema: Jira LegacyserverSystem JiraserverId4733707d-2057-3a0f-ae5e-4fd8aff50176keyCPS-1660

Type: Event (cps:org.onap.cps.ncmp.events:ncmp-async-request-response-event-schema:v1)

CNCF Cloud Event alignment

Introduction

Proposed New Schema:
Jira Legacy
server System Jira
serverId 4733707d-2057-3a0f-ae5e-4fd8aff50176
key CPS-1660