org.apache.flink.runtime.io.network.netty.CreditedBasedReceiverSideNetworkBufferAllocator Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* distributed with this work for additional information
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* 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,
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*/
package org.apache.flink.runtime.io.network.netty;
import org.apache.flink.core.memory.MemorySegment;
import org.apache.flink.core.memory.MemorySegmentFactory;
import org.apache.flink.runtime.io.network.buffer.Buffer;
import org.apache.flink.runtime.io.network.buffer.FreeingBufferRecycler;
import org.apache.flink.runtime.io.network.buffer.NetworkBuffer;
import org.apache.flink.runtime.io.network.partition.consumer.InputChannelID;
import org.apache.flink.runtime.io.network.partition.consumer.RemoteInputChannel;
import static org.apache.flink.util.Preconditions.checkNotNull;
/**
* A buffer allocator used for the receiver side of netty handlers.
*/
public class CreditedBasedReceiverSideNetworkBufferAllocator implements NetworkBufferAllocator {
private final CreditBasedPartitionRequestClientHandler partitionRequestClientHandler;
CreditedBasedReceiverSideNetworkBufferAllocator(CreditBasedPartitionRequestClientHandler partitionRequestClientHandler) {
this.partitionRequestClientHandler = checkNotNull(partitionRequestClientHandler);
}
@Override
public Buffer allocatePooledNetworkBuffer(InputChannelID receiverId, int size) {
Buffer buffer = null;
RemoteInputChannel inputChannel = partitionRequestClientHandler.getInputChannel(receiverId);
if (inputChannel != null) {
buffer = inputChannel.requestBuffer();
}
return buffer;
}
@Override
public Buffer allocateUnPooledNetworkBuffer(int size) {
byte[] byteArray = new byte[size];
MemorySegment memSeg = MemorySegmentFactory.wrap(byteArray);
return new NetworkBuffer(memSeg, FreeingBufferRecycler.INSTANCE, false);
}
}