TimestampedRecordOrJsonStringTimeBasedWriterPartitioner.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 org.apache.gobblin.configuration.State;
import org.apache.gobblin.writer.partitioner.TimeBasedWriterPartitioner;
import org.wikimedia.gobblin.utils.JsonStringTimestampExtractor;
import lombok.extern.slf4j.Slf4j;
/**
* A {@link TimeBasedWriterPartitioner} for Timestamped byte[] records whose payload contains json.
* This class is a superclass of {@link TimestampedRecordTimeBasedWriterPartitioner} overriding the
* {@link TimestampedRecordTimeBasedWriterPartitioner#getNonKafkaTimestamp} method only.
*
* This class uses {@link JsonStringTimestampExtractor} to parse the Json and extract the timestamp.
* It takes advantage of {@link JsonStringTimeBasedWriterPartitioner} configuration keys for timestamp
* column and timestamp format, as well as static classes to extract their values.
*
* Note: If a record doesn't contain the specified field, or if no field is specified,
* the current timestamp will be used.
*/
@Slf4j
public class TimestampedRecordOrJsonStringTimeBasedWriterPartitioner extends TimestampedRecordTimeBasedWriterPartitioner<String> {
private final JsonStringTimestampExtractor jsonStringTimestampExtractor;
public TimestampedRecordOrJsonStringTimeBasedWriterPartitioner(State state) {
this(state, 1, 0);
}
public TimestampedRecordOrJsonStringTimeBasedWriterPartitioner(State state, int numBranches, int branchId) {
super(state, numBranches, branchId);
this.jsonStringTimestampExtractor = new JsonStringTimestampExtractor(
JsonStringTimeBasedWriterPartitioner.getWriterPartitionerTimestampColumns(state, numBranches, branchId),
JsonStringTimeBasedWriterPartitioner.getWriterPartitionerTimestampFormat(state, numBranches, branchId)
);
}
@Override
protected long getNonKafkaTimestamp(String payload) {
return jsonStringTimestampExtractor.getRecordTimestamp(payload);
}
}