* ============LICENSE_START=======================================================
  * org.onap.dcaegen2.collectors.ves
  * ================================================================================
- * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * Copyright (C) 2017,2020 AT&T Intellectual Property. All rights reserved.
  * Copyright (C) 2018 Nokia. All rights reserved.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
 class DMaaPEventPublisher implements EventPublisher {
     private static final int PENDING_MESSAGE_LOG_THRESHOLD = 100;
     private static final String VES_UNIQUE_ID = "VESuniqueId";
+    private static final String EVENT = "event";
+    private static final String COMMON_EVENT_HEADER = "commonEventHeader";
+    private static final String PARTITION_KEY = "sourceName";
     private static final Logger log = LoggerFactory.getLogger(DMaaPEventPublisher.class);
     private final DMaaPPublishersCache publishersCache;
     private final Logger outputLogger;
 
     private void uncheckedSendEvent(JSONObject event, String domain, CambriaBatchingPublisher publisher)
             throws IOException {
-        int pendingMsgs = publisher.send("MyPartitionKey", event.toString());
+       
+       String pk = event.getJSONObject(EVENT).getJSONObject(COMMON_EVENT_HEADER).get(PARTITION_KEY).toString();
+        int pendingMsgs = publisher.send(pk, event.toString());
         if (pendingMsgs > PENDING_MESSAGE_LOG_THRESHOLD) {
             log.info("Pending messages count: " + pendingMsgs);
         }
 
  * org.onap.dcaegen2.collectors.ves
  * ================================================================================
  * Copyright (C) 2018 Nokia. All rights reserved.
+ * Copyright (C) 2020 AT&T. All rights reserved.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
     @Test
     public void shouldSendEventToTopic() throws Exception {
         // given
-        JSONObject event = new JSONObject("{}");
+        JSONObject event = new JSONObject("{\"event\":{\"commonEventHeader\":{\"startEpochMicrosec\":1537562659253019,\"sourceId\":\"79e90d76-513a-4f79-886d-470a0037c5cf\",\"eventId\":\"Heartbeat_vDNS_100.100.10.10\",\"nfcNamingCode\":\"DNS\",\"reportingEntityId\":\"79e90d76-513a-4f79-886d-470a0037c5cf\",\"eventType\":\"applicationVnf\",\"priority\":\"Normal\",\"version\":3,\"reportingEntityName\":\"dns01cmd004\",\"sequence\":36312,\"domain\":\"heartbeat\",\"lastEpochMicrosec\":1537562659253019,\"eventName\":\"Heartbeat_vDNS\",\"sourceName\":\"dns01cmd004\",\"nfNamingCode\":\"MDNS\"}}}");
+
 
         // when
         eventPublisher.sendEvent(event, STREAM_ID);
 
         // then
-        verify(cambriaPublisher).send("MyPartitionKey", event.toString());
+        verify(cambriaPublisher).send("dns01cmd004", event.toString());
     }
+    
 
     @Test
     public void shouldRemoveInternalVESUIDBeforeSending() throws Exception {
         // given
         JSONObject event = new JSONObject(
-            "{\"VESuniqueId\": \"362e0146-ec5f-45f3-8d8f-bfe877c3f58e\", \"another\": 8}");
+            "{\"VESuniqueId\": \"362e0146-ec5f-45f3-8d8f-bfe877c3f58e\",\"event\":{\"commonEventHeader\":{\"startEpochMicrosec\":1537562659253019,\"sourceId\":\"79e90d76-513a-4f79-886d-470a0037c5cf\",\"eventId\":\"Heartbeat_vDNS_100.100.10.10\",\"nfcNamingCode\":\"DNS\",\"reportingEntityId\":\"79e90d76-513a-4f79-886d-470a0037c5cf\",\"eventType\":\"applicationVnf\",\"priority\":\"Normal\",\"version\":3,\"reportingEntityName\":\"dns01cmd004\",\"sequence\":36312,\"domain\":\"heartbeat\",\"lastEpochMicrosec\":1537562659253019,\"eventName\":\"Heartbeat_vDNS\",\"sourceName\":\"dns01cmd004\",\"nfNamingCode\":\"MDNS\"}}}"); 
 
         // when
         eventPublisher.sendEvent(event, STREAM_ID);
 
         // then
-        verify(cambriaPublisher).send("MyPartitionKey", new JSONObject("{\"another\": 8}").toString());
+        verify(cambriaPublisher).send("dns01cmd004", new JSONObject("{\"event\":{\"commonEventHeader\":{\"startEpochMicrosec\":1537562659253019,\"sourceId\":\"79e90d76-513a-4f79-886d-470a0037c5cf\",\"eventId\":\"Heartbeat_vDNS_100.100.10.10\",\"nfcNamingCode\":\"DNS\",\"reportingEntityId\":\"79e90d76-513a-4f79-886d-470a0037c5cf\",\"eventType\":\"applicationVnf\",\"priority\":\"Normal\",\"version\":3,\"reportingEntityName\":\"dns01cmd004\",\"sequence\":36312,\"domain\":\"heartbeat\",\"lastEpochMicrosec\":1537562659253019,\"eventName\":\"Heartbeat_vDNS\",\"sourceName\":\"dns01cmd004\",\"nfNamingCode\":\"MDNS\"}}}").toString());
     }
 
     @Test
         // then
         verify(DMaaPPublishersCache).closePublisherFor(STREAM_ID);
     }
-}
\ No newline at end of file
+}