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Objective

we want to include delta report which gets generated after any update in data nodes in cps notification messages. as of now we have only xpath of the updated node in notification messages.

Notification message schema

Element

Name

Parent

Type

Mandatory

Description

Format

(example) Value

1

Header

id

String

Yes

random id for cloud event header. UUID is suggested

2

source

String

Yes

source of information

fixed value

urn:cps:org.onap.cps

3

specversion

String

Yes

cloud event version spec

fixed value

1.0

4

type

String

Yes

type of event

fixed value

dataUpdateEvent

5

dataschema

String

Yes

data schema

fixed value

cps:org.onap.cps:data-updated-event-schema:1.0.0

6

Payload

data

Object

Yes

The actual data payload. Details will be provided below.

7

observedTimestamp

data

String

Yes

The timespamp of the event. 

timestamp

2024-01-17 12:34:43

8

dataspaceName

data

String

Yes

The dataspace name where data is changed.

dataspace01

9

schemaSetName

data

String

No

The schemaset name for which data is changed.

bookstore

10

anchorName

data

String

Yes

The anchor name for which data is changed.

anchor01

11

operation

data

String

Yes

The operation performed on data. 

CREATE

UPDATE

DELETE

12

xpath

data

String

Yes

The XPath which is changed 

/bookstore

13

updatedData

data

String

No

The changed data in the update operation

{
    "action": "replace",
    "xpath": "/bookstore/categories/[@code=2]",
    "source-data": {
      "name": "Funny"
    },
    "target-data": {
      "name": "Comic"
    }
  }

Enable/Disable delta notification

We want to control the delta in notification using the environment variable in cps core application. a new environment variable will be added in cps-application as below to enable/disable updated delta in cps notification

app.cps.data-updated.delta-notification: ${CPS_DELTA_NOTIFICATION_ENABLED:true}

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