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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.ipc;
21  
22  import org.apache.hadoop.hbase.DoNotRetryIOException;
23  
24  /**
25   * An error requesting an RPC protocol that the server is not serving.
26   */
27  @SuppressWarnings("serial")
28  public class UnknownProtocolException extends DoNotRetryIOException {
29    private Class<?> protocol;
30  
31    public UnknownProtocolException(String mesg) {
32      // required for unwrapping from a RemoteException
33      super(mesg);
34    }
35  
36    public UnknownProtocolException(Class<?> protocol) {
37      this(protocol, "Server is not handling protocol "+protocol.getName());
38    }
39  
40    public UnknownProtocolException(Class<?> protocol, String mesg) {
41      super(mesg);
42      this.protocol = protocol;
43    }
44  
45    public Class getProtocol() {
46      return protocol;
47    }
48  }