X-Git-Url: https://gerrit.onap.org/r/gitweb?a=blobdiff_plain;f=docs%2Fcontent%2Fmodeling.rst;h=e8c53456c2527cebcd562a649c368b9b00419e8b;hb=cb23b1771e3fc552090f80791b852ce8ad05f150;hp=b8bf91e4f9a5e6c18195030da4fdb4d763ef8c1b;hpb=564e5e96c4ee9a4ae9715865cf6491b4266c601f;p=cps%2Fcps-temporal.git

diff --git a/docs/content/modeling.rst b/docs/content/modeling.rst
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--- a/docs/content/modeling.rst
+++ b/docs/content/modeling.rst
@@ -2,10 +2,62 @@
 .. Creative Commons Attribution 4.0 International License.
 .. http://creativecommons.org/licenses/by/4.0
 ..
-.. Copyright (C) 2021 Bell Canada
+.. Copyright (C) 2021-2022 Bell Canada
 
 =====================
 CPS Temporal Modeling
 =====================
 
-.. warning:: Draft
+Event Structure
+===============
+
+Data manipulated by both CPS Core and CPS Temporal to represent a Data Updated
+Event is a JSON structure that is defined by following Json Schema:
+
+* :download:`cps-data-updated-event-schema.json <../_static/event-schema/cps-data-updated-event-schema.json>`
+
+And following is an example of an event compliant with this schema:
+
+.. code:: json
+
+    {
+        "schema": "urn:cps:org.onap.cps:data-updated-event-schema:v2",
+        "id": "38aa6cc6-264d-4ede-b534-18f5c1f403ea",
+        "source": "urn:cps:org.onap.cps",
+        "type": "org.onap.cps.data-updated-event",
+        "content": {
+            "observedTimestamp": "2021-06-09T13:00:00.123-0400",
+            "operation": "UPDATE",
+            "dataspaceName": "my-dataspace",
+            "schemaSetName": "my-schema-set",
+            "anchorName": "my-anchor",
+            "data": {
+                "interface": {
+                    "name": "itf-1",
+                    "status": "up"
+                }
+            }
+        }
+    }
+
+Event versions
+==============
+
+The following table lists the data-updated-event schema evolution over releases :
+
+  +-----------+------------+-------------------------+---------------------+
+  | Version   | Release    | Compatibility Type      | Upgrade First       |
+  |           |            | (with previous version) |                     |
+  +===========+============+=========================+=====================+
+  | v1        | Istanbul   | n/a                     | Any order           |
+  +-----------+------------+-------------------------+---------------------+
+  | v2        | Jakarta    | Backward                | Consumer (Temporal) |
+  +-----------+------------+-------------------------+---------------------+
+
+**Compatibility Types**
+
+Several compatibility types exist when an event schema definition is evolving from one release to the next one:
+
+- Backward compatibility means that consumers using the new schema can read data produced with the previous schema.
+- Forward compatibility means that data produced with a new schema can be read by consumers using the previous schema.
+- Full compatibility means that schemas are both backward and forward compatible: old data can be read with the new schema, and new data can also be read with the previous schema.
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