diff options
Diffstat (limited to 'dcae-analytics-cdap-plugins/src/main/java/org/onap/dcae/apod/analytics/cdap/plugins/batch/sink/dmaap/DMaaPMROutputFormat.java')
-rw-r--r-- | dcae-analytics-cdap-plugins/src/main/java/org/onap/dcae/apod/analytics/cdap/plugins/batch/sink/dmaap/DMaaPMROutputFormat.java | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/dcae-analytics-cdap-plugins/src/main/java/org/onap/dcae/apod/analytics/cdap/plugins/batch/sink/dmaap/DMaaPMROutputFormat.java b/dcae-analytics-cdap-plugins/src/main/java/org/onap/dcae/apod/analytics/cdap/plugins/batch/sink/dmaap/DMaaPMROutputFormat.java new file mode 100644 index 0000000..d627fb0 --- /dev/null +++ b/dcae-analytics-cdap-plugins/src/main/java/org/onap/dcae/apod/analytics/cdap/plugins/batch/sink/dmaap/DMaaPMROutputFormat.java @@ -0,0 +1,94 @@ +/* + * ===============================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.conf.Configuration; +import org.apache.hadoop.io.NullWritable; +import org.apache.hadoop.mapreduce.JobContext; +import org.apache.hadoop.mapreduce.OutputCommitter; +import org.apache.hadoop.mapreduce.OutputFormat; +import org.apache.hadoop.mapreduce.RecordWriter; +import org.apache.hadoop.mapreduce.TaskAttemptContext; +import org.onap.dcae.apod.analytics.cdap.plugins.utils.DMaaPSinkConfigMapper; +import org.onap.dcae.apod.analytics.dmaap.DMaaPMRFactory; +import org.onap.dcae.apod.analytics.dmaap.domain.config.DMaaPMRPublisherConfig; +import org.onap.dcae.apod.analytics.dmaap.service.publisher.DMaaPMRPublisher; + +import java.io.IOException; + +/** + * DMaaP MR Output format used by DMaaP MR Sink Plugin to create a MR Publisher and pass to custom {@link + * DMaaPMRRecordWriter} + * <p> + * @author Rajiv Singla . Creation Date: 1/27/2017. + */ +public class DMaaPMROutputFormat extends OutputFormat<String, NullWritable> { + + @Override + public RecordWriter<String, NullWritable> getRecordWriter(TaskAttemptContext context) throws IOException, + InterruptedException { + final Configuration configuration = context.getConfiguration(); + final DMaaPMRPublisherConfig publisherConfig = DMaaPSinkConfigMapper.map(configuration); + final DMaaPMRPublisher publisher = DMaaPMRFactory.create().createPublisher(publisherConfig); + return new DMaaPMRRecordWriter(publisher); + } + + @Override + public void checkOutputSpecs(JobContext context) throws IOException, InterruptedException { + // do nothing + } + + @Override + public OutputCommitter getOutputCommitter(TaskAttemptContext context) throws IOException, InterruptedException { + return new NoOpOutputCommitter(); + } + + /** + * A dummy implementation for {@link OutputCommitter} that does nothing. + */ + protected static class NoOpOutputCommitter extends OutputCommitter { + + @Override + public void setupJob(JobContext jobContext) throws IOException { + // no op + } + + @Override + public void setupTask(TaskAttemptContext taskContext) throws IOException { + // no op + } + + @Override + public boolean needsTaskCommit(TaskAttemptContext taskContext) throws IOException { + return false; + } + + @Override + public void commitTask(TaskAttemptContext taskContext) throws IOException { + // no op + } + + @Override + public void abortTask(TaskAttemptContext taskContext) throws IOException { + // no op + } + } +} |