Fix Trailer based Http Checksum for Async Request body with variable chunk size #3380
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| Original file line number | Diff line number | Diff line change |
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| { | ||
| "type": "bugfix", | ||
| "category": "AWS SDK for Java v2", | ||
| "contributor": "", | ||
| "description": "Fixed issue where request used to fail while calculating Trailer based checksum for Async Request body." | ||
| } |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,142 @@ | ||
| /* | ||
| * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"). | ||
| * You may not use this file except in compliance with the License. | ||
| * A copy of the License is located at | ||
| * | ||
| * http://aws.amazon.com/apache2.0 | ||
| * | ||
| * or in the "license" file accompanying this file. This file 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. | ||
| */ | ||
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| package software.amazon.awssdk.core.internal.async; | ||
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| import static software.amazon.awssdk.core.HttpChecksumConstant.DEFAULT_ASYNC_CHUNK_SIZE; | ||
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| import java.nio.ByteBuffer; | ||
| import java.util.ArrayList; | ||
| import java.util.Collections; | ||
| import java.util.List; | ||
| import java.util.concurrent.atomic.AtomicLong; | ||
| import software.amazon.awssdk.annotations.SdkInternalApi; | ||
| import software.amazon.awssdk.utils.Validate; | ||
| import software.amazon.awssdk.utils.builder.SdkBuilder; | ||
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| /** | ||
| * Class that will buffer incoming BufferBytes of totalBytes length to chunks of bufferSize* | ||
| */ | ||
| @SdkInternalApi | ||
| public final class ChunkBuffer { | ||
| private final AtomicLong remainingBytes; | ||
| private final ByteBuffer currentBuffer; | ||
| private final int bufferSize; | ||
| private List<ByteBuffer> bufferedList; | ||
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| private ChunkBuffer(Long totalBytes, Integer bufferSize) { | ||
| Validate.notNull(totalBytes, "The totalBytes must not be null"); | ||
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| int chunkSize = bufferSize != null ? bufferSize : DEFAULT_ASYNC_CHUNK_SIZE; | ||
| this.bufferSize = chunkSize; | ||
| this.currentBuffer = ByteBuffer.allocate(chunkSize); | ||
| this.remainingBytes = new AtomicLong(totalBytes); | ||
| bufferedList = new ArrayList<>(); | ||
| } | ||
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| public static Builder builder() { | ||
| return new DefaultBuilder(); | ||
| } | ||
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| public List<ByteBuffer> getBufferedList() { | ||
| if (currentBuffer == null) { | ||
| throw new IllegalStateException(""); | ||
|
There was a problem hiding this comment. currentBuffer should never be null, right? |
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| } | ||
| List<ByteBuffer> ret = bufferedList; | ||
| bufferedList = new ArrayList<>(); | ||
| return Collections.unmodifiableList(ret); | ||
| } | ||
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| public Iterable<ByteBuffer> bufferAndCreateChunks(ByteBuffer buffer) { | ||
| int startPosition = 0; | ||
| int currentBytesRead = buffer.remaining(); | ||
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| do { | ||
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| int bufferedBytes = currentBuffer.position(); | ||
| int availableToRead = bufferSize - bufferedBytes; | ||
| int bytesToMove = Math.min(availableToRead, currentBytesRead - startPosition); | ||
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| if (bufferedBytes == 0) { | ||
| currentBuffer.put(buffer.array(), startPosition, bytesToMove); | ||
| } else { | ||
| currentBuffer.put(buffer.array(), 0, bytesToMove); | ||
| } | ||
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| startPosition = startPosition + bytesToMove; | ||
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| // Send the data once the buffer is full | ||
| if (currentBuffer.position() == bufferSize) { | ||
| currentBuffer.position(0); | ||
| ByteBuffer bufferToSend = ByteBuffer.allocate(bufferSize); | ||
| bufferToSend.put(currentBuffer.array(), 0, bufferSize); | ||
| bufferToSend.clear(); | ||
| currentBuffer.clear(); | ||
| bufferedList.add(bufferToSend); | ||
| remainingBytes.addAndGet(-bufferSize); | ||
| } | ||
| } while (startPosition < currentBytesRead); | ||
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| int remainingBytesInBuffer = currentBuffer.position(); | ||
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| // Send the remaining buffer when | ||
| // 1. remainingBytes in buffer are same as the last few bytes to be read. | ||
| // 2. If it is a zero byte and the last byte to be read. | ||
| if (remainingBytes.get() == remainingBytesInBuffer && | ||
| (buffer.remaining() == 0 || remainingBytesInBuffer > 0)) { | ||
| currentBuffer.clear(); | ||
| ByteBuffer trimmedBuffer = ByteBuffer.allocate(remainingBytesInBuffer); | ||
| trimmedBuffer.put(currentBuffer.array(), 0, remainingBytesInBuffer); | ||
| trimmedBuffer.clear(); | ||
| bufferedList.add(trimmedBuffer); | ||
| remainingBytes.addAndGet(-remainingBytesInBuffer); | ||
| } | ||
| return bufferedList; | ||
| } | ||
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| public interface Builder extends SdkBuilder<Builder, ChunkBuffer> { | ||
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| Builder bufferSize(int bufferSize); | ||
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| Builder totalBytes(long totalBytes); | ||
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| } | ||
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| private static final class DefaultBuilder implements Builder { | ||
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| private Integer bufferSize; | ||
| private Long totalBytes; | ||
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| @Override | ||
| public ChunkBuffer build() { | ||
| return new ChunkBuffer(totalBytes, bufferSize); | ||
| } | ||
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| @Override | ||
| public Builder bufferSize(int bufferSize) { | ||
| this.bufferSize = bufferSize; | ||
| return this; | ||
| } | ||
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| @Override | ||
| public Builder totalBytes(long totalBytes) { | ||
| this.totalBytes = totalBytes; | ||
| return this; | ||
| } | ||
| } | ||
| } | ||
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As discussed offline, we should probably make this thread safe