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1   /**
2    *
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *     http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing, software
14   * distributed under the License is distributed on an "AS IS" BASIS,
15   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16   * See the License for the specific language governing permissions and
17   * limitations under the License.
18   */
19  
20  package org.apache.hadoop.hbase.exceptions;
21  
22  import org.apache.hadoop.hbase.classification.InterfaceAudience;
23  import org.apache.hadoop.hbase.classification.InterfaceStability;
24  
25  /**
26   * An error requesting an RPC protocol that the server is not serving.
27   */
28  @SuppressWarnings("serial")
29  @InterfaceAudience.Public
30  @InterfaceStability.Evolving
31  public class UnknownProtocolException extends org.apache.hadoop.hbase.DoNotRetryIOException {
32    private Class<?> protocol;
33  
34    public UnknownProtocolException(String mesg) {
35      // required for unwrapping from a RemoteException
36      super(mesg);
37    }
38  
39    public UnknownProtocolException(Class<?> protocol) {
40      this(protocol, "Server is not handling protocol "+protocol.getName());
41    }
42  
43    public UnknownProtocolException(Class<?> protocol, String mesg) {
44      super(mesg);
45      this.protocol = protocol;
46    }
47  
48    public Class getProtocol() {
49      return protocol;
50    }
51  }