spark UploadBlockStream 源码
spark UploadBlockStream 代码
文件路径：/common/network-shuffle/src/main/java/org/apache/spark/network/shuffle/protocol/UploadBlockStream.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.shuffle.protocol;
import java.util.Arrays;
import java.util.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.protocol.Encoders;
// Needed by ScalaDoc. See SPARK-7726
import static org.apache.spark.network.shuffle.protocol.BlockTransferMessage.Type;
/**
* A request to Upload a block, which the destination should receive as a stream.
*
* The actual block data is not contained here. It will be passed to the StreamCallbackWithID
* that is returned from RpcHandler.receiveStream()
*/
public class UploadBlockStream extends BlockTransferMessage {
public final String blockId;
public final byte[] metadata;
public UploadBlockStream(String blockId, byte[] metadata) {
this.blockId = blockId;
this.metadata = metadata;
}
@Override
protected Type type() { return Type.UPLOAD_BLOCK_STREAM; }
@Override
public int hashCode() {
int objectsHashCode = Objects.hashCode(blockId);
return objectsHashCode * 41 + Arrays.hashCode(metadata);
}
@Override
public String toString() {
return new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE)
.append("blockId", blockId)
.append("metadata size", metadata.length)
.toString();
}
@Override
public boolean equals(Object other) {
if (other instanceof UploadBlockStream) {
UploadBlockStream o = (UploadBlockStream) other;
return Objects.equals(blockId, o.blockId)
&& Arrays.equals(metadata, o.metadata);
}
return false;
}
@Override
public int encodedLength() {
return Encoders.Strings.encodedLength(blockId)
+ Encoders.ByteArrays.encodedLength(metadata);
}
@Override
public void encode(ByteBuf buf) {
Encoders.Strings.encode(buf, blockId);
Encoders.ByteArrays.encode(buf, metadata);
}
public static UploadBlockStream decode(ByteBuf buf) {
String blockId = Encoders.Strings.decode(buf);
byte[] metadata = Encoders.ByteArrays.decode(buf);
return new UploadBlockStream(blockId, metadata);
}
}
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