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    package org.apache.hadoop.hdfs.client;
019    
020    import org.apache.hadoop.security.token.SecretManager.InvalidToken;
021    
022    public 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    }