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.shortcircuit;
019
020import org.apache.hadoop.security.token.SecretManager.InvalidToken;
021
022public final class ShortCircuitReplicaInfo {
023  private final ShortCircuitReplica replica;
024  private final InvalidToken exc; 
025
026  public ShortCircuitReplicaInfo() {
027    this.replica = null;
028    this.exc = null;
029  }
030
031  public ShortCircuitReplicaInfo(ShortCircuitReplica replica) {
032    this.replica = replica;
033    this.exc = null;
034  }
035
036  public ShortCircuitReplicaInfo(InvalidToken exc) {
037    this.replica = null;
038    this.exc = exc;
039  }
040
041  public ShortCircuitReplica getReplica() {
042    return replica;
043  }
044
045  public InvalidToken getInvalidTokenException() {
046    return exc; 
047  }
048  
049  public String toString() {
050    StringBuilder builder = new StringBuilder();
051    String prefix = "";
052    builder.append("ShortCircuitReplicaInfo{");
053    if (replica != null) {
054      builder.append(prefix).append(replica);
055      prefix = ", ";
056    }
057    if (exc != null) {
058      builder.append(prefix).append(exc);
059      prefix = ", ";
060    }
061    builder.append("}");
062    return builder.toString();
063  }
064}