1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 *
19 */
20
21 package org.apache.directory.server.ntp.protocol;
22
23
24 import org.apache.directory.server.ntp.NtpService;
25 import org.apache.directory.server.ntp.messages.NtpMessage;
26 import org.apache.directory.server.ntp.service.NtpServiceImpl;
27 import org.apache.mina.core.service.IoHandlerAdapter;
28 import org.apache.mina.core.session.IoSession;
29 import org.slf4j.Logger;
30 import org.slf4j.LoggerFactory;
31
32
33 /**
34 * The NTP protocol handler. It implements the {@link org.apache.mina.core.service.IoHandler#messageReceived} method,
35 * which returns the NTP reply. The {@link org.apache.mina.core.service.IoHandler#exceptionCaught} is also implemented,
36 * all the other methods are handled by the {@link IoHandlerAdapter} class.<br>
37 *
38 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
39 */
40 public class NtpProtocolHandler extends IoHandlerAdapter
41 {
42 /** the log for this class */
43 private static final Logger LOG = LoggerFactory.getLogger( NtpProtocolHandler.class );
44
45 /** The NtpService instance */
46 private NtpService ntpService = new NtpServiceImpl();
47
48
49 /**
50 * {@inheritDoc}
51 */
52 @Override
53 public void exceptionCaught( IoSession session, Throwable cause )
54 {
55 LOG.error( session.getRemoteAddress() + " EXCEPTION", cause );
56 session.closeNow();
57 }
58
59
60 /**
61 * {@inheritDoc}
62 */
63 @Override
64 public void messageReceived( IoSession session, Object message )
65 {
66 if ( LOG.isDebugEnabled() )
67 {
68 LOG.debug( "{} RCVD: {}", session.getRemoteAddress(), message );
69 }
70
71 NtpMessage/directory/server/ntp/messages/NtpMessage.html#NtpMessage">NtpMessage reply = ntpService.getReplyFor( ( NtpMessage ) message );
72
73 session.write( reply );
74 }
75 }