| /* |
| * 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.hadoop.ozone.client.io; |
| |
| import org.apache.hadoop.hdds.client.BlockID; |
| import org.apache.hadoop.hdds.client.ECReplicationConfig; |
| import org.apache.hadoop.hdds.client.ReplicationConfig; |
| import org.apache.hadoop.hdds.protocol.proto.HddsProtos; |
| import org.apache.hadoop.hdds.scm.XceiverClientFactory; |
| import org.apache.hadoop.hdds.scm.pipeline.Pipeline; |
| import org.apache.hadoop.hdds.scm.storage.BlockExtendedInputStream; |
| import org.apache.hadoop.hdds.scm.storage.BlockInputStream; |
| import org.apache.hadoop.hdds.scm.storage.BlockLocationInfo; |
| import org.apache.hadoop.hdds.security.token.OzoneBlockTokenIdentifier; |
| import org.apache.hadoop.io.ByteBufferPool; |
| import org.apache.hadoop.io.ElasticByteBufferPool; |
| import org.apache.hadoop.security.token.Token; |
| |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.function.Function; |
| import java.util.function.Supplier; |
| |
| /** |
| * Factory class to create various BlockStream instances. |
| */ |
| public class BlockInputStreamFactoryImpl implements BlockInputStreamFactory { |
| |
| private ECBlockInputStreamFactory ecBlockStreamFactory; |
| |
| public static BlockInputStreamFactory getInstance( |
| ByteBufferPool byteBufferPool, |
| Supplier<ExecutorService> ecReconstructExecutorSupplier) { |
| return new BlockInputStreamFactoryImpl(byteBufferPool, |
| ecReconstructExecutorSupplier); |
| } |
| |
| public BlockInputStreamFactoryImpl() { |
| this(new ElasticByteBufferPool(), Executors::newSingleThreadExecutor); |
| } |
| |
| public BlockInputStreamFactoryImpl(ByteBufferPool byteBufferPool, |
| Supplier<ExecutorService> ecReconstructExecutorSupplier) { |
| this.ecBlockStreamFactory = |
| ECBlockInputStreamFactoryImpl.getInstance(this, byteBufferPool, |
| ecReconstructExecutorSupplier); |
| } |
| |
| /** |
| * Create a new BlockInputStream based on the replication Config. If the |
| * replication Config indicates the block is EC, then it will create an |
| * ECBlockInputStream, otherwise a BlockInputStream will be returned. |
| * @param repConfig The replication Config |
| * @param blockInfo The blockInfo representing the block. |
| * @param pipeline The pipeline to be used for reading the block |
| * @param token The block Access Token |
| * @param verifyChecksum Whether to verify checksums or not. |
| * @param xceiverFactory Factory to create the xceiver in the client |
| * @param refreshFunction Function to refresh the pipeline if needed |
| * @return BlockExtendedInputStream of the correct type. |
| */ |
| public BlockExtendedInputStream create(ReplicationConfig repConfig, |
| BlockLocationInfo blockInfo, Pipeline pipeline, |
| Token<OzoneBlockTokenIdentifier> token, boolean verifyChecksum, |
| XceiverClientFactory xceiverFactory, |
| Function<BlockID, Pipeline> refreshFunction) { |
| if (repConfig.getReplicationType().equals(HddsProtos.ReplicationType.EC)) { |
| return new ECBlockInputStreamProxy((ECReplicationConfig)repConfig, |
| blockInfo, verifyChecksum, xceiverFactory, refreshFunction, |
| ecBlockStreamFactory); |
| } else { |
| return new BlockInputStream(blockInfo.getBlockID(), blockInfo.getLength(), |
| pipeline, token, verifyChecksum, xceiverFactory, refreshFunction); |
| } |
| } |
| |
| } |