001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hdfs.server.blockmanagement;
019
020import java.io.IOException;
021
022import com.google.common.annotations.VisibleForTesting;
023import org.apache.hadoop.hdfs.protocol.DatanodeID;
024import org.apache.hadoop.hdfs.server.protocol.BlockReportContext;
025
026/**
027 * Used to inject certain faults for testing.
028 */
029public class BlockManagerFaultInjector {
030  @VisibleForTesting
031  public static BlockManagerFaultInjector instance =
032      new BlockManagerFaultInjector();
033
034  @VisibleForTesting
035  public static BlockManagerFaultInjector getInstance() {
036    return instance;
037  }
038
039  @VisibleForTesting
040  public void incomingBlockReportRpc(DatanodeID nodeID,
041          BlockReportContext context) throws IOException {
042
043  }
044
045  @VisibleForTesting
046  public void requestBlockReportLease(DatanodeDescriptor node, long leaseId) {
047  }
048
049  @VisibleForTesting
050  public void removeBlockReportLease(DatanodeDescriptor node, long leaseId) {
051  }
052}