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.hbase.errorhandling;
019
020import org.apache.yetus.audience.InterfaceAudience;
021
022/**
023 * Exception for timeout of a task.
024 * @see TimeoutExceptionInjector
025 */
026@InterfaceAudience.Public
027@SuppressWarnings("serial")
028public class TimeoutException extends Exception {
029
030  private final String sourceName;
031  private final long start;
032  private final long end;
033  private final long expected;
034
035  /**
036   * Exception indicating that an operation attempt has timed out
037   * @param start time the operation started (ms since epoch)
038   * @param end time the timeout was triggered (ms since epoch)
039   * @param expected expected amount of time for the operation to complete (ms)
040   *                 (ideally, expected <= end-start)
041   */
042  public TimeoutException(String sourceName, long start, long end, long expected) {
043    super("Timeout elapsed! Source:" + sourceName + " Start:" + start + ", End:" + end
044        + ", diff:" + (end - start) + ", max:" + expected + " ms");
045    this.sourceName = sourceName;
046    this.start = start;
047    this.end = end;
048    this.expected = expected;
049  }
050
051  public long getStart() {
052    return start;
053  }
054
055  public long getEnd() {
056    return end;
057  }
058
059  public long getMaxAllowedOperationTime() {
060    return expected;
061  }
062
063  public String getSourceName() {
064    return sourceName;
065  }
066}