| /* |
| * 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.ReplicationConfig; |
| import org.apache.hadoop.hdds.protocol.DatanodeDetails; |
| 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.BlockLocationInfo; |
| |
| import java.util.List; |
| import java.util.function.Function; |
| |
| /** |
| * Interface used by factories which create ECBlockInput streams for |
| * reconstruction or non-reconstruction reads. |
| */ |
| public interface ECBlockInputStreamFactory { |
| |
| /** |
| * Create a new EC InputStream based on the missingLocations boolean. If it is |
| * set to false, it indicates all locations are available and an |
| * ECBlockInputStream will be created. Otherwise an |
| * ECBlockReconstructedInputStream will be created. |
| * @param missingLocations Indicates if all the data locations are available |
| * or not, controlling the type of stream created |
| * @param failedLocations List of DatanodeDetails indicating locations we |
| * know are bad and should not be used. |
| * @param repConfig The replication Config |
| * @param blockInfo The blockInfo representing the block. |
| * @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. |
| */ |
| BlockExtendedInputStream create(boolean missingLocations, |
| List<DatanodeDetails> failedLocations, ReplicationConfig repConfig, |
| BlockLocationInfo blockInfo, boolean verifyChecksum, |
| XceiverClientFactory xceiverFactory, |
| Function<BlockID, Pipeline> refreshFunction); |
| } |