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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.runtime.jobgraph;
import org.apache.flink.annotation.VisibleForTesting;
import org.apache.flink.runtime.executiongraph.IntermediateResultPartition;
import org.apache.flink.runtime.topology.ResultID;
import org.apache.flink.shaded.netty4.io.netty.buffer.ByteBuf;
/** Id identifying {@link IntermediateResultPartition}. */
public class IntermediateResultPartitionID implements ResultID {
private static final long serialVersionUID = 1L;
// Represent the number of bytes occupied when writes IntermediateResultPartitionID to the
// ByteBuf.
// It is the sum of two long types(lowerPart and upperPart of the intermediateDataSetID) and one
// int type(partitionNum).
private static final int BYTEBUF_LEN = 20;
private final IntermediateDataSetID intermediateDataSetID;
private final int partitionNum;
/** Creates an new random intermediate result partition ID for testing. */
@VisibleForTesting
public IntermediateResultPartitionID() {
this.partitionNum = -1;
this.intermediateDataSetID = new IntermediateDataSetID();
}
/**
* Creates an new intermediate result partition ID with {@link IntermediateDataSetID} and the
* partitionNum.
*/
public IntermediateResultPartitionID(
IntermediateDataSetID intermediateDataSetID, int partitionNum) {
this.intermediateDataSetID = intermediateDataSetID;
this.partitionNum = partitionNum;
}
public int getPartitionNumber() {
return partitionNum;
}
public IntermediateDataSetID getIntermediateDataSetID() {
return intermediateDataSetID;
}
public void writeTo(ByteBuf buf) {
intermediateDataSetID.writeTo(buf);
buf.writeInt(partitionNum);
}
public static IntermediateResultPartitionID fromByteBuf(ByteBuf buf) {
final IntermediateDataSetID intermediateDataSetID = IntermediateDataSetID.fromByteBuf(buf);
final int partitionNum = buf.readInt();
return new IntermediateResultPartitionID(intermediateDataSetID, partitionNum);
}
public static int getByteBufLength() {
return BYTEBUF_LEN;
}
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
} else if (obj != null && obj.getClass() == getClass()) {
IntermediateResultPartitionID that = (IntermediateResultPartitionID) obj;
return that.intermediateDataSetID.equals(this.intermediateDataSetID)
&& that.partitionNum == this.partitionNum;
} else {
return false;
}
}
@Override
public int hashCode() {
return this.intermediateDataSetID.hashCode() ^ this.partitionNum;
}
@Override
public String toString() {
return intermediateDataSetID.toString() + "#" + partitionNum;
}
}