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*/
018
019package org.apache.hadoop.yarn.state;
020
021import org.apache.hadoop.classification.InterfaceAudience.Public;
022import org.apache.hadoop.classification.InterfaceStability.Evolving;
023import org.apache.hadoop.yarn.exceptions.YarnRuntimeException;
024
025@Public
026@Evolving
027public class InvalidStateTransitonException extends YarnRuntimeException {
028
029  private static final long serialVersionUID = 8610511635996283691L;
030
031  private Enum<?> currentState;
032  private Enum<?> event;
033
034  public InvalidStateTransitonException(Enum<?> currentState, Enum<?> event) {
035    super("Invalid event: " + event + " at " + currentState);
036    this.currentState = currentState;
037    this.event = event;
038  }
039
040  public Enum<?> getCurrentState() {
041    return currentState;
042  }
043  
044  public Enum<?> getEvent() {
045    return event;
046  }
047
048}