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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 com.att.nsa.cambria.backends;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import kafka.producer.KeyedMessage;
import com.att.nsa.cambria.beans.LogDetails;
/**
* A publisher interface. Publishers receive messages and post them to a topic.
* @author author
*/
public interface Publisher
{
/**
* A message interface. The message has a key and a body.
* @author author
*/
public interface message
{
/**
* Get the key for this message. The key is used to partition messages
* into "sub-streams" that have guaranteed order. The key can be null,
* which means the message can be processed without any concern for order.
*
* @return a key, possibly null
*/
String getKey();
/**
* Get the message body.
* @return a message body
*/
String getMessage();
/**
* set the logging params for transaction enabled logging
* @param logDetails
*/
void setLogDetails (LogDetails logDetails);
/**
* Get the log details for transaction enabled logging
* @return LogDetails
*/
LogDetails getLogDetails ();
/**
* boolean transactionEnabled
* @return true/false
*/
boolean isTransactionEnabled();
/**
* Set the transaction enabled flag from prop file or topic based implementation
* @param transactionEnabled
*/
void setTransactionEnabled(boolean transactionEnabled);
}
/**
* Send a single message to a topic. Equivalent to sendMessages with a list of size 1.
* @param topic
* @param msg
* @throws IOException
*/
public void sendMessage ( String topic, message msg ) throws IOException;
/**
* Send messages to a topic.
* @param topic
* @param msgs
* @throws IOException
*/
public void sendMessages ( String topic, List<? extends message> msgs ) throws IOException;
public void sendBatchMessage(String topic ,ArrayList<KeyedMessage<String,String>> kms) throws IOException;
}
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