| /* |
| * 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.fs.s3.common.writer; |
| |
| import org.apache.flink.annotation.Internal; |
| import org.apache.flink.core.io.SimpleVersionedSerializer; |
| |
| import com.amazonaws.services.s3.model.PartETag; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.nio.ByteOrder; |
| import java.nio.charset.Charset; |
| import java.nio.charset.StandardCharsets; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Serializer implementation for a {@link S3Recoverable}. |
| */ |
| @Internal |
| final class S3RecoverableSerializer implements SimpleVersionedSerializer<S3Recoverable> { |
| |
| static final S3RecoverableSerializer INSTANCE = new S3RecoverableSerializer(); |
| |
| private static final Charset CHARSET = StandardCharsets.UTF_8; |
| |
| private static final int MAGIC_NUMBER = 0x98761432; |
| |
| /** Do not instantiate, use reusable {@link #INSTANCE} instead. */ |
| private S3RecoverableSerializer() {} |
| |
| @Override |
| public int getVersion() { |
| return 1; |
| } |
| |
| @Override |
| public byte[] serialize(S3Recoverable obj) throws IOException { |
| final List<PartETag> partList = obj.parts(); |
| final PartETag[] parts = partList.toArray(new PartETag[partList.size()]); |
| |
| final byte[] keyBytes = obj.getObjectName().getBytes(CHARSET); |
| final byte[] uploadIdBytes = obj.uploadId().getBytes(CHARSET); |
| |
| final byte[][] etags = new byte[parts.length][]; |
| int partEtagBytes = 0; |
| for (int i = 0; i < parts.length; i++) { |
| etags[i] = parts[i].getETag().getBytes(CHARSET); |
| partEtagBytes += etags[i].length + 2 * Integer.BYTES; |
| } |
| |
| final String lastObjectKey = obj.incompleteObjectName(); |
| final byte[] lastPartBytes = lastObjectKey == null ? null : lastObjectKey.getBytes(CHARSET); |
| |
| final byte[] targetBytes = new byte[ |
| Integer.BYTES + // magic number |
| Integer.BYTES + keyBytes.length + |
| Integer.BYTES + uploadIdBytes.length + |
| Integer.BYTES + partEtagBytes + |
| Long.BYTES + |
| Integer.BYTES + (lastPartBytes == null ? 0 : lastPartBytes.length) + |
| Long.BYTES |
| ]; |
| |
| ByteBuffer bb = ByteBuffer.wrap(targetBytes).order(ByteOrder.LITTLE_ENDIAN); |
| bb.putInt(MAGIC_NUMBER); |
| |
| bb.putInt(keyBytes.length); |
| bb.put(keyBytes); |
| |
| bb.putInt(uploadIdBytes.length); |
| bb.put(uploadIdBytes); |
| |
| bb.putInt(etags.length); |
| for (int i = 0; i < parts.length; i++) { |
| PartETag pe = parts[i]; |
| bb.putInt(pe.getPartNumber()); |
| bb.putInt(etags[i].length); |
| bb.put(etags[i]); |
| } |
| |
| bb.putLong(obj.numBytesInParts()); |
| |
| if (lastPartBytes == null) { |
| bb.putInt(0); |
| } |
| else { |
| bb.putInt(lastPartBytes.length); |
| bb.put(lastPartBytes); |
| } |
| |
| bb.putLong(obj.incompleteObjectLength()); |
| |
| return targetBytes; |
| } |
| |
| @Override |
| public S3Recoverable deserialize(int version, byte[] serialized) throws IOException { |
| switch (version) { |
| case 1: |
| return deserializeV1(serialized); |
| default: |
| throw new IOException("Unrecognized version or corrupt state: " + version); |
| } |
| } |
| |
| private static S3Recoverable deserializeV1(byte[] serialized) throws IOException { |
| final ByteBuffer bb = ByteBuffer.wrap(serialized).order(ByteOrder.LITTLE_ENDIAN); |
| |
| if (bb.getInt() != MAGIC_NUMBER) { |
| throw new IOException("Corrupt data: Unexpected magic number."); |
| } |
| |
| final byte[] keyBytes = new byte[bb.getInt()]; |
| bb.get(keyBytes); |
| |
| final byte[] uploadIdBytes = new byte[bb.getInt()]; |
| bb.get(uploadIdBytes); |
| |
| final int numParts = bb.getInt(); |
| final ArrayList<PartETag> parts = new ArrayList<>(numParts); |
| for (int i = 0; i < numParts; i++) { |
| final int partNum = bb.getInt(); |
| final byte[] buffer = new byte[bb.getInt()]; |
| bb.get(buffer); |
| parts.add(new PartETag(partNum, new String(buffer, CHARSET))); |
| } |
| |
| final long numBytes = bb.getLong(); |
| |
| final String lastPart; |
| final int lastObjectArraySize = bb.getInt(); |
| if (lastObjectArraySize == 0) { |
| lastPart = null; |
| } else { |
| byte[] lastPartBytes = new byte[lastObjectArraySize]; |
| bb.get(lastPartBytes); |
| lastPart = new String(lastPartBytes, CHARSET); |
| } |
| |
| final long lastPartLength = bb.getLong(); |
| |
| return new S3Recoverable( |
| new String(keyBytes, CHARSET), |
| new String(uploadIdBytes, CHARSET), |
| parts, |
| numBytes, |
| lastPart, |
| lastPartLength); |
| } |
| } |