1 /**
2 * Copyright (c) 2012, University of Konstanz, Distributed Systems Group All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
5 * following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of
6 * conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice,
7 * this list of conditions and the following disclaimer in the documentation and/or other materials provided with the
8 * distribution. * Neither the name of the University of Konstanz nor the names of its contributors may be used to
9 * endorse or promote products derived from this software without specific prior written permission.
10 *
11 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
12 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
13 * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
14 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
15 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
16 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
17 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
18 */
19 package org.jscsi.initiator.connection.state;
20
21
22 import java.io.IOException;
23
24 import org.jscsi.exception.InternetSCSIException;
25 import org.jscsi.initiator.connection.Connection;
26 import org.jscsi.parser.ProtocolDataUnit;
27 import org.jscsi.parser.logout.LogoutResponse;
28 import org.jscsi.parser.logout.LogoutResponseParser;
29
30
31 /**
32 * <h1>LogoutResponseState</h1>
33 * <p/>
34 * This state handles a Logout Response.
35 *
36 * @author Volker Wildi
37 */
38 public final class LogoutResponseState extends AbstractState {
39
40 // --------------------------------------------------------------------------
41 // --------------------------------------------------------------------------
42
43 /**
44 * Constructor to create a <code>LogoutResponseState</code> instance, which uses the given connection for
45 * transmission.
46 *
47 * @param initConnection The context connection, which is used for the network transmission.
48 */
49 public LogoutResponseState (final Connection initConnection) {
50
51 super(initConnection);
52 }
53
54 // --------------------------------------------------------------------------
55 // --------------------------------------------------------------------------
56
57 /** {@inheritDoc} */
58 public final void execute () throws InternetSCSIException {
59
60 final ProtocolDataUnit protocolDataUnit = connection.receive();
61
62 if (!(protocolDataUnit.getBasicHeaderSegment().getParser() instanceof LogoutResponseParser)) { throw new InternetSCSIException("This PDU type (" + protocolDataUnit.getBasicHeaderSegment().getParser() + ") is not expected. "); }
63
64 final LogoutResponseParser parser = (LogoutResponseParser) protocolDataUnit.getBasicHeaderSegment().getParser();
65
66 if (parser.getResponse() == LogoutResponse.CONNECTION_CLOSED_SUCCESSFULLY) {
67 // exception rethrow
68 try {
69 // FIXME: Implement Connection close
70 connection.getSession().close();
71 } catch (IOException e) {
72 throw new InternetSCSIException("Closing the connection throws this error: " + e.getLocalizedMessage());
73 }
74 } else {
75 throw new InternetSCSIException("The connection could not be closed successfully.");
76 }
77
78 // return false;
79 }
80
81 // --------------------------------------------------------------------------
82 // --------------------------------------------------------------------------
83 // --------------------------------------------------------------------------
84 // --------------------------------------------------------------------------
85
86 }