org.apache.flink.connector.pulsar.source.enumerator.PulsarSourceEnumeratorStateSerializer Maven / Gradle / Ivy
/*
* 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.
*/
package org.apache.flink.connector.pulsar.source.enumerator;
import org.apache.flink.connector.pulsar.source.split.PulsarPartitionSplit;
import org.apache.flink.connector.pulsar.source.split.PulsarPartitionSplitSerializer;
import org.apache.flink.connector.pulsar.source.util.SerdeUtils;
import org.apache.flink.core.io.SimpleVersionedSerializer;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
/**
* The {@link SimpleVersionedSerializer Serializer} for the enumerator state of
* Pulsar source.
*/
public class PulsarSourceEnumeratorStateSerializer implements SimpleVersionedSerializer {
private static final int CURRENT_VERSION = 0;
@Override
public int getVersion() {
return CURRENT_VERSION;
}
@Override
public byte[] serialize(PulsarSourceEnumeratorState enumState) throws IOException {
return SerdeUtils.serializeSplitAssignments(
enumState.getCurrentAssignment(),
new PulsarPartitionSplitSerializer());
}
@Override
public PulsarSourceEnumeratorState deserialize(int version, byte[] serialized) throws IOException {
if (version == 0) {
Map> currentPartitionAssignment = SerdeUtils.deserializeSplitAssignments(
serialized,
new PulsarPartitionSplitSerializer(),
ArrayList::new);
return new PulsarSourceEnumeratorState(currentPartitionAssignment);
}
throw new IOException(String.format("The bytes are serialized with version %d, " +
"while this deserializer only supports version up to %d", version, CURRENT_VERSION));
}
}