1 files changed, 185 insertions, 0 deletions
diff --git a/src/main/java/org/onap/dmaap/dmf/mr/backends/memory/MemoryConsumerFactory.java b/src/main/java/org/onap/dmaap/dmf/mr/backends/memory/MemoryConsumerFactory.java
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@@ -0,0 +1,185 @@
+/*******************************************************************************
+ *  ============LICENSE_START=======================================================
+ *  org.onap.dmaap
+ *  ================================================================================
+ *  Copyright © 2017 AT&T Intellectual Property. 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.
+ *  You may obtain a copy of the License at
+ *        http://www.apache.org/licenses/LICENSE-2.0
+*  
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *  ============LICENSE_END=========================================================
+ *  
+ *  ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ *  
+ *******************************************************************************/
+package org.onap.dmaap.dmf.mr.backends.memory;
+
+import org.onap.dmaap.dmf.mr.CambriaApiException;
+import org.onap.dmaap.dmf.mr.backends.Consumer;
+import org.onap.dmaap.dmf.mr.backends.ConsumerFactory;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+
+/**
+ * 
+ * @author anowarul.islam
+ *
+ */
+public class MemoryConsumerFactory implements ConsumerFactory
+{
+
+	private final MemoryQueue fQueue;
+	
+	/**
+	 * 
+	 * Initializing constructor
+	 * @param q
+	 */
+	public MemoryConsumerFactory ( MemoryQueue q )
+	{
+		fQueue = q;
+	}
+
+	/**
+	 * 
+	 * @param topic
+	 * @param consumerGroupId
+	 * @param clientId
+	 * @param timeoutMs
+	 * @return Consumer
+	 */
+	@Override
+	public Consumer getConsumerFor ( String topic, String consumerGroupId, String clientId, int timeoutMs, String remotehost )
+	{
+		return new MemoryConsumer ( topic, consumerGroupId );
+	}
+
+	/**
+	 * 
+	 * Define nested inner class
+	 *
+	 */
+	private class MemoryConsumer implements Consumer
+	{
+
+		private final String fTopic;
+		private final String fConsumer;
+		private final long fCreateMs;
+		private long fLastAccessMs;
+		
+		/**
+		 * 
+		 * Initializing MemoryConsumer constructor 
+		 * @param topic
+		 * @param consumer
+		 * 
+		 */
+		public MemoryConsumer ( String topic, String consumer )
+		{
+			fTopic = topic;
+			fConsumer = consumer;
+			fCreateMs = System.currentTimeMillis ();
+			fLastAccessMs = fCreateMs;
+		}
+
+		@Override
+		/**
+		 * 
+		 * return consumer details  
+		 */
+		public Message nextMessage ()
+		{
+			return fQueue.get ( fTopic, fConsumer );
+		}
+
+		@Override
+		public boolean close() {
+			//Nothing to close/clean up.
+			return true;
+		}
+		/**
+		 * 
+		 */
+		public void commitOffsets()
+		{
+			// ignoring this aspect
+		}
+		/**
+		 * get offset
+		 */
+		public long getOffset()
+		{
+			return 0;
+		}
+
+		@Override
+		/**
+		 * get consumer topic name
+		 */
+		public String getName ()
+		{
+			return fTopic + "/" + fConsumer;
+		}
+
+		@Override
+		public long getCreateTimeMs ()
+		{
+			return fCreateMs;
+		}
+
+		@Override
+		public long getLastAccessMs ()
+		{
+			return fLastAccessMs;
+		}
+
+		
+
+		@Override
+		public void setOffset(long offset) {
+			// TODO Auto-generated method stub
+			
+		}
+
+		
+	}
+
+	@Override
+	public void destroyConsumer(String topic, String consumerGroupId,
+			String clientId) {
+		//No cache for memory consumers, so NOOP
+	}
+
+	@Override
+	public void dropCache ()
+	{
+		// nothing to do - there's no cache here
+	}
+
+	@Override
+	/**
+	 * @return ArrayList<MemoryConsumer>
+	 */
+	public Collection<? extends Consumer> getConsumers ()
+	{
+		return new ArrayList<> ();
+	}
+
+	@Override
+	public HashMap getConsumerForKafka011(String topic, String consumerGroupName, String consumerId, int timeoutMs,
+			String remotehost) throws UnavailableException, CambriaApiException {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+	
+}