TimestampedRecordTimeBasedWriterPartitioner.java
/*
* 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.wikimedia.gobblin.writer.partitioner;
import java.util.Optional;
import org.apache.gobblin.configuration.State;
import org.apache.gobblin.writer.partitioner.TimeBasedWriterPartitioner;
import org.wikimedia.gobblin.TimestampedRecord;
import lombok.extern.slf4j.Slf4j;
/**
* A {@link TimeBasedWriterPartitioner} for byte[] containing json.
*
* The json field that contains the timestamp can be specified using TIMESTAMP_COLUMN_KEY.
* The format of the json field that contains the timestamp can be specified using TIMESTAMP_FORMAT_KEY.
*
* If a record doesn't contain the specified field, or if no field is specified, the current timestamp will be used.
*/
@Slf4j
public class TimestampedRecordTimeBasedWriterPartitioner<P> extends TimeBasedWriterPartitioner<TimestampedRecord<P>> {
public TimestampedRecordTimeBasedWriterPartitioner(State state) {
this(state, 1, 0);
}
public TimestampedRecordTimeBasedWriterPartitioner(State state, int numBranches, int branchId) {
super(state, numBranches, branchId);
}
@Override
public long getRecordTimestamp(TimestampedRecord<P> rec) {
// If a kafka timestamp is set, use it
Optional<Long> timestamp = rec.getTimestamp();
if (timestamp.isPresent()) {
return timestamp.get();
} else { // Otherwise return current timestamp
return getNonKafkaTimestamp(rec.getPayload());
}
}
protected long getNonKafkaTimestamp(P payload) {
return System.currentTimeMillis();
}
}