Document Async event payloads.

For vertices and edges document respective
payloads for Adding, Updating, and Deleting
edges and vertices.

Issue-ID: AAI-604
Change-Id: I9f8802e5bcd9083d786d71db2457caa682304133
Signed-off-by: Shwetank Dave <shwetank.dave@amdocs.com>

1 files changed, 146 insertions, 0 deletions

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+# ASYNCHRONOUS MODE
+
+Gizmo has two modes, a Synchoronous (sync) mode and an Asynchronous (async) mode.
+
+In the Async mode, Gizmo uses the consumer/producer model where when a
+client makes a request, Gizmo will generate an event payload and
+publish it  on the async event stream. It will then wait for a
+response for that particular event on a different event stream. Once it recieves a
+response, gizmo will send a response back to the client which made the
+original request.
+
+## Here are a few examples of the events published by Gizmo
+
+### Vertex
+
+#### Adding a Vertex
+
+    {
+        "timestamp": 1514927928167,
+        "operation": "CREATE",
+        "vertex": {
+            "properties": {
+                "ipv4-oam-address": "1.2.3.4",
+                "resource-version": "1477013499",
+                "purpose": "my-purpose",
+                "fqdn": "myhost.onap.net",
+                "in-maint": false,
+                "equip-model": "DL380p-nd",
+                "equip-vendor": "HP",
+                "equip-type": "server",
+                "hostname": "myhost",
+                "ptnii-equip-name": "e-name"
+            },
+            "key": "",
+            "type": "pserver",
+            "schema-version": "vX"
+        },
+        "transaction-id": "c0a81fa7-5ef4-49cd-ab39-e42c53c9b9a4"
+    }
+
+#### Updating a Vertex
+
+    {
+        "timestamp": 1514929776429,
+        "operation": "UPDATE",
+        "vertex": {
+            "properties": {
+                "ipv4-oam-address": "1.2.3.4",
+                "resource-version": "1477013499",
+                "purpose": "my-purpose",
+                "fqdn": "updated.myhost.onap.net",
+                "in-maint": false,
+                "equip-model": "DELL380p-nd",
+                "equip-vendor": "DELL",
+                "equip-type": "updated-server",
+                "hostname": "updated-myhost",
+                "ptnii-equip-name": "name-has-been-updated"
+            },
+            "key": "84bf7b3f-81f5-4c34-ab5c-207281cb71bd",
+            "type": "pserver",
+            "schema-version": "vX"
+        },
+        "transaction-id": "3b8df1d5-4c51-47e3-bbef-c27b47e11149"
+    }
+
+#### Deleting a Vertex
+
+    {
+        "timestamp": 1514930052327,
+        "operation": "DELETE",
+        "vertex": {
+            "key": "84bf7b3f-81f5-4c34-ab5c-207281cb71bd",
+            "type": "pserver",
+            "schema-version": "vX"
+        },
+        "transaction-id": "6bb7a27b-a942-4cac-9b2b-0fa1f3897b8c"
+    }
+
+
+#### Adding an Edge
+
+    {
+      "timestamp": 1515005153863,
+      "operation": "CREATE",
+      "edge": {
+        "target": {
+          "key": "febd8996-62ec-4ce6-ba8e-d2fa1609e13b",
+          "type": "pserver"
+        },
+        "properties": {
+          "contains-other-v": "NONE",
+          "delete-other-v": "NONE",
+          "prevent-delete": "IN",
+          "SVC-INFRA": "OUT"
+        },
+        "key": "",
+        "type": "tosca.relationships.HostedOn",
+        "schema-version": "v11",
+        "source": {
+          "key": "7beade35-19f1-4c1d-a1bd-bfba59e0b582",
+          "type": "vserver"
+        }
+      },
+      "transaction-id": "63a8994d-1118-4e65-ab06-fff40f6f48ef"
+    }
+
+#### Replace an Edge
+
+    {
+      "timestamp": 1515005301622,
+      "operation": "UPDATE",
+      "edge": {
+        "target": {
+          "key": "febd8996-62ec-4ce6-ba8e-d2fa1609e13b",
+          "type": "pserver"
+        },
+        "properties": {
+          "contains-other-v": "NOPE",
+          "delete-other-v": "YES",
+          "prevent-delete": "MAYBE",
+          "SVC-INFRA": "OUT"
+        },
+        "key": "9727a0ea-559e-497c-98e4-0cbdaede0346",
+        "type": "tosca.relationships.HostedOn",
+        "schema-version": "v11",
+        "source": {
+          "key": "7beade35-19f1-4c1d-a1bd-bfba59e0b582",
+          "type": "vserver"
+        }
+      },
+      "transaction-id": "ed284991-6c2f-4c94-a592-76fed17a2f14"
+    }
+
+
+#### Deleting an Edge
+
+    {
+      "timestamp": 1515005579837,
+      "operation": "DELETE",
+      "edge": {
+        "key": "9727a0ea-559e-497c-98e4-0cbdaede0346",
+        "type": "tosca.relationships.HostedOn",
+        "schema-version": "v11"
+      },
+      "transaction-id": "b4583bc9-dd96-483f-ab2d-20c1c6e5622f"
+    }