spark MergedBlockMetaSuccess 源码
spark MergedBlockMetaSuccess 代码
文件路径：/common/network-common/src/main/java/org/apache/spark/network/protocol/MergedBlockMetaSuccess.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.apache.spark.network.protocol;
import com.google.common.base.Objects;
import io.netty.buffer.ByteBuf;
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;
import org.apache.spark.network.buffer.ManagedBuffer;
import org.apache.spark.network.buffer.NettyManagedBuffer;
/**
* Response to {@link MergedBlockMetaRequest} request.
* Note that the server-side encoding of this messages does NOT include the buffer itself.
*
* @since 3.2.0
*/
public class MergedBlockMetaSuccess extends AbstractResponseMessage {
public final long requestId;
public final int numChunks;
public MergedBlockMetaSuccess(
long requestId,
int numChunks,
ManagedBuffer chunkBitmapsBuffer) {
super(chunkBitmapsBuffer, true);
this.requestId = requestId;
this.numChunks = numChunks;
}
@Override
public Type type() {
return Type.MergedBlockMetaSuccess;
}
@Override
public int hashCode() {
return Objects.hashCode(requestId, numChunks);
}
@Override
public String toString() {
return new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE)
.append("requestId", requestId).append("numChunks", numChunks).toString();
}
@Override
public int encodedLength() {
return 8 + 4;
}
/** Encoding does NOT include 'buffer' itself. See {@link MessageEncoder}. */
@Override
public void encode(ByteBuf buf) {
buf.writeLong(requestId);
buf.writeInt(numChunks);
}
public int getNumChunks() {
return numChunks;
}
/** Decoding uses the given ByteBuf as our data, and will retain() it. */
public static MergedBlockMetaSuccess decode(ByteBuf buf) {
long requestId = buf.readLong();
int numChunks = buf.readInt();
buf.retain();
NettyManagedBuffer managedBuf = new NettyManagedBuffer(buf.duplicate());
return new MergedBlockMetaSuccess(requestId, numChunks, managedBuf);
}
@Override
public ResponseMessage createFailureResponse(String error) {
return new RpcFailure(requestId, error);
}
}
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