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/*
* ===============================LICENSE_START======================================
* dcae-analytics
* ================================================================================
* 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===========================================
*/
package org.onap.dcae.apod.analytics.cdap.plugins.batch.sink.dmaap;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.mapreduce.RecordWriter;
import org.apache.hadoop.mapreduce.TaskAttemptContext;
import org.onap.dcae.apod.analytics.dmaap.service.publisher.DMaaPMRPublisher;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.util.Arrays;
/**
* A simple implementation of {@link RecordWriter} which writes messages to DMaaP MR topic
* <p>
* @author Rajiv Singla . Creation Date: 1/27/2017.
*/
public class DMaaPMRRecordWriter extends RecordWriter<String, NullWritable> {
private static final Logger LOG = LoggerFactory.getLogger(DMaaPMRRecordWriter.class);
private final DMaaPMRPublisher dMaaPMRPublisher;
public DMaaPMRRecordWriter(DMaaPMRPublisher dMaaPMRPublisher) {
this.dMaaPMRPublisher = dMaaPMRPublisher;
}
@Override
public void write(String message, NullWritable value) throws IOException, InterruptedException {
LOG.debug("Writing message to DMaaP MR Topic: {}", message);
dMaaPMRPublisher.publish(Arrays.asList(message));
}
@Override
public void close(TaskAttemptContext context) throws IOException, InterruptedException {
dMaaPMRPublisher.flush();
}
}
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