[ONOS-3394] Json models for REST api

Change-Id: I69c396ae08d25e83dce31e4d2ec92cd9a28c54f5
diff --git a/web/api/src/main/resources/definitions/Cluster.json b/web/api/src/main/resources/definitions/Cluster.json
new file mode 100644
index 0000000..f2d32a8
--- /dev/null
+++ b/web/api/src/main/resources/definitions/Cluster.json
@@ -0,0 +1,45 @@
+{
+  "type": "object",
+  "title": "cluster",
+  "required": [
+    "nodes"
+  ],
+  "properties": {
+    "nodes": {
+      "type": "array",
+      "xml": {
+        "name": "nodes",
+        "wrapped": true
+      },
+      "items": {
+        "type": "object",
+        "title": "nodes",
+        "required": [
+          "id",
+          "ip",
+          "tcpPort",
+          "status"
+        ],
+        "properties": {
+          "id": {
+            "type": "string",
+            "example": "127.0.0.1"
+          },
+          "ip": {
+            "type": "string",
+            "example": "127.0.0.1"
+          },
+          "tcpPort": {
+            "type": "integer",
+            "format": "int64",
+            "example": 9876
+          },
+          "status": {
+            "type": "string",
+            "example": "ACTIVE"
+          }
+        }
+      }
+    }
+  }
+}
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