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1 <?php
2 /**
3  * A HalfShutdownSocket visitor
4  *
5  * @author              Roland Haeder <webmaster@ship-simu.org>
6  * @version             0.0.0
7  * @copyright   Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2012 Hub Developer Team
8  * @license             GNU GPL 3.0 or any newer version
9  * @link                http://www.ship-simu.org
10  *
11  * This program is free software: you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License as published by
13  * the Free Software Foundation, either version 3 of the License, or
14  * (at your option) any later version.
15  *
16  * This program is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19  * GNU General Public License for more details.
20  *
21  * You should have received a copy of the GNU General Public License
22  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
23  */
24 class HalfShutdownSocketVisitor extends BaseVisitor implements Visitor {
25         /**
26          * Protected constructor
27          *
28          * @return      void
29          */
30         protected function __construct () {
31                 // Call parent constructor
32                 parent::__construct(__CLASS__);
33
34                 // Set visitor mode
35                 $this->setVisitorMode('socket');
36         }
37
38         /**
39          * Creates an instance of this class
40          *
41          * @return      $visitorInstance        An instance a Visitorable class
42          */
43         public static final function createHalfShutdownSocketVisitor () {
44                 // Get new instance
45                 $visitorInstance = new HalfShutdownSocketVisitor();
46
47                 // Return the prepared instance
48                 return $visitorInstance;
49         }
50
51         /**
52          * "Visit" method to do the actual request. Here we want to shutdown the
53          * attached socket.
54          *
55          * @param       $helperInstance         An instance of a ConnectionHelper class
56          * @return      void
57          */
58         public function visitConnectionHelper (ConnectionHelper $helperInstance) {
59                 // Do we have reached the retry count?
60                 if (ConnectionStatisticsHelper::isConnectRetryExhausted($helperInstance)) {
61                         // Also visit the network package to clear any out-going packages
62                         NetworkPackageFactory::createNetworkPackageInstance()->accept($this);
63
64                         // Still shutdown the visitor (look in visitNetworkPackage() for details)
65                         $helperInstance->doShutdown();
66                 } else {
67                         // We can still move on and retry the connection attempt
68                         ConnectionStatisticsHelper::increaseConnectRetry($helperInstance);
69                 }
70         }
71
72         /**
73          * "Visit" method to do the actual request. This method does remove the last
74          * failed package from the stack because all retries are fully exhausted
75          * (see visitConnectionHelper() for the logic).
76          *
77          * @param       $packageInstance        An instance of a Deliverable class
78          * @return      void
79          */
80         public function visitNetworkPackage (Deliverable $packageInstance) {
81                 // Just call it back
82                 $packageInstance->removeFirstFailedPackage();
83         }
84 }
85
86 // [EOF]
87 ?>