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diff --git a/src/main/java/org/onap/dmaap/mr/client/MRPublisher.java b/src/main/java/org/onap/dmaap/mr/client/MRPublisher.java
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+/*******************************************************************************
+ *  ============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.mr.client;
+
+import java.io.IOException;
+import java.util.Collection;
+
+/**
+ * A MR publishing interface.
+ *
+ */
+public interface MRPublisher extends MRClient
+{
+	/**
+	 * A simple message container 
+	 */
+	public static class message
+	{
+		public message ( String partition, String msg )
+		{
+			fPartition = partition == null ? "" : partition;
+			fMsg = msg;
+			if ( fMsg == null )
+			{
+				throw new IllegalArgumentException ( "Can't send a null message." );
+			}
+		}
+
+		public message ( message msg )
+		{
+			this ( msg.fPartition, msg.fMsg );
+		}
+
+		public final String fPartition;
+		public final String fMsg;
+	}
+	
+	/**
+	 * Send the given message without partition. partition will be placed at HTTP request level.
+	 * @param msg message to sent
+	 * @return the number of pending messages
+	 * @throws IOException exception
+	 */
+	int send ( String msg ) throws IOException;
+	/**
+	 * Send the given message using the given partition.
+	 * @param partition partition
+	 * @param msg message
+	 * @return the number of pending messages
+	 * @throws IOException exception
+	 */
+	int send ( String partition, String msg ) throws IOException;
+
+	/**
+	 * Send the given message using its partition.
+	 * @param msg mesg
+	 * @return the number of pending messages
+	 * @throws IOException exp
+	 */
+	int send ( message msg ) throws IOException;
+
+	/**
+	 * Send the given messages using their partitions.
+	 * @param msgs msg
+	 * @return the number of pending messages
+	 * @throws IOException exp
+	 */
+	int send ( Collection<message> msgs ) throws IOException;
+
+	/**
+	 * Close this publisher. It's an error to call send() after close()
+	 */
+	void close ();
+}