| /* |
| * 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.hdfs.server.datanode; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.fi.ProbabilityModel; |
| import org.apache.hadoop.hdfs.server.datanode.FSDataset; |
| import org.apache.hadoop.hdfs.server.datanode.FSDatasetInterface.BlockWriteStreams; |
| import org.apache.hadoop.util.DiskChecker.*; |
| |
| |
| /** |
| * This aspect takes care about faults injected into datanode.FSDatase class |
| */ |
| public aspect FSDatasetAspects { |
| public static final Log LOG = LogFactory.getLog(BlockReceiverAspects.class); |
| |
| pointcut execGetBlockFile() : |
| // the following will inject faults inside of the method in question |
| execution (* FSDataset.getBlockFile(..)) && !within(FSDatasetAspects +); |
| |
| pointcut callCreateBlockWriteStream(ReplicaInPipeline repl) : |
| call (BlockWriteStreams createStreams(..)) |
| && target (repl) |
| && !within(FSDatasetAspects +); |
| |
| // This aspect specifies the logic of our fault point. |
| // In this case it simply throws DiskErrorException at the very beginning of |
| // invocation of the method, specified by callGetBlockFile() pointcut |
| before() throws DiskErrorException : execGetBlockFile() { |
| if (ProbabilityModel.injectCriteria(FSDataset.class.getSimpleName())) { |
| LOG.info("Before the injection point"); |
| Thread.dumpStack(); |
| throw new DiskErrorException("FI: injected fault point at " |
| + thisJoinPoint.getStaticPart().getSourceLocation()); |
| } |
| } |
| |
| before(ReplicaInPipeline repl) throws DiskOutOfSpaceException : callCreateBlockWriteStream(repl) { |
| if (ProbabilityModel.injectCriteria(FSDataset.class.getSimpleName())) { |
| LOG.info("Before the injection point"); |
| Thread.dumpStack(); |
| throw new DiskOutOfSpaceException("FI: injected fault point at " |
| + thisJoinPoint.getStaticPart().getSourceLocation()); |
| } |
| } |
| } |