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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 ();
}
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