| /** |
| * 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.io.erasurecode.coder; |
| |
| import org.apache.hadoop.io.erasurecode.ECBlock; |
| import org.apache.hadoop.io.erasurecode.ECChunk; |
| import org.apache.hadoop.io.erasurecode.rawcoder.RawErasureDecoder; |
| |
| /** |
| * Erasure decoding step, a wrapper of all the necessary information to perform |
| * a decoding step involved in the whole process of decoding a block group. |
| */ |
| public class ErasureDecodingStep extends AbstractErasureCodingStep { |
| private int[] erasedIndexes; |
| private RawErasureDecoder rawDecoder; |
| |
| /** |
| * The constructor with all the necessary info. |
| * @param inputBlocks |
| * @param erasedIndexes the indexes of erased blocks in inputBlocks array |
| * @param outputBlocks |
| * @param rawDecoder |
| */ |
| public ErasureDecodingStep(ECBlock[] inputBlocks, int[] erasedIndexes, |
| ECBlock[] outputBlocks, |
| RawErasureDecoder rawDecoder) { |
| super(inputBlocks, outputBlocks); |
| this.erasedIndexes = erasedIndexes; |
| this.rawDecoder = rawDecoder; |
| } |
| |
| @Override |
| public void performCoding(ECChunk[] inputChunks, ECChunk[] outputChunks) { |
| rawDecoder.decode(inputChunks, erasedIndexes, outputChunks); |
| } |
| |
| } |