org.apache.flink.connector.base.source.hybrid.HybridSourceSplitSerializer 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.flink.connector.base.source.hybrid;
import org.apache.flink.core.io.SimpleVersionedSerializer;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
/** Serializes splits by delegating to the source-indexed underlying split serializer. */
public class HybridSourceSplitSerializer implements SimpleVersionedSerializer {
public HybridSourceSplitSerializer() {}
@Override
public int getVersion() {
return 0;
}
@Override
public byte[] serialize(HybridSourceSplit split) throws IOException {
try (ByteArrayOutputStream baos = new ByteArrayOutputStream();
DataOutputStream out = new DataOutputStream(baos)) {
out.writeInt(split.sourceIndex());
out.writeUTF(split.splitId());
out.writeInt(split.wrappedSplitSerializerVersion());
out.writeInt(split.wrappedSplitBytes().length);
out.write(split.wrappedSplitBytes());
out.flush();
return baos.toByteArray();
}
}
@Override
public HybridSourceSplit deserialize(int version, byte[] serialized) throws IOException {
if (version == 0) {
return deserializeV0(serialized);
}
throw new IOException(String.format("Invalid version %d", version));
}
private HybridSourceSplit deserializeV0(byte[] serialized) throws IOException {
try (ByteArrayInputStream bais = new ByteArrayInputStream(serialized);
DataInputStream in = new DataInputStream(bais)) {
int sourceIndex = in.readInt();
String splitId = in.readUTF();
int nestedVersion = in.readInt();
int length = in.readInt();
byte[] splitBytes = new byte[length];
in.readFully(splitBytes);
return new HybridSourceSplit(sourceIndex, splitBytes, nestedVersion, splitId);
}
}
}