org.apache.pulsar.io.hdfs2.sink.text.HdfsAbstractTextFileSink Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
package org.apache.pulsar.io.hdfs2.sink.text;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import org.apache.pulsar.functions.api.Record;
import org.apache.pulsar.io.core.KeyValue;
import org.apache.pulsar.io.core.Sink;
import org.apache.pulsar.io.hdfs2.sink.HdfsAbstractSink;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Base class for HDFS Sinks that writes there contents to HDFS as Text Files.
*
* @param
* @param
*/
public abstract class HdfsAbstractTextFileSink extends HdfsAbstractSink implements Sink {
private static final Logger LOG = LoggerFactory.getLogger(HdfsAbstractTextFileSink.class);
protected OutputStreamWriter writer;
@Override
protected void createWriter() throws IOException {
writer = new OutputStreamWriter(new BufferedOutputStream(openHdfsStream()), getEncoding());
}
@Override
public void close() throws Exception {
writer.close();
super.close();
}
@Override
public void write(Record record) {
try {
KeyValue kv = extractKeyValue(record);
writer.write(kv.getValue().toString());
if (hdfsSinkConfig.getSeparator() != '\u0000') {
writer.write(hdfsSinkConfig.getSeparator());
}
unackedRecords.put(record);
} catch (IOException | InterruptedException e) {
LOG.error("Unable to write to file " + getPath(), e);
record.fail();
}
}
private OutputStream openHdfsStream() throws IOException {
if (hdfsSinkConfig.getCompression() != null) {
return getCompressionCodec().createOutputStream(getHdfsStream());
} else {
return getHdfsStream();
}
}
}