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Some noisy debug lines commented out
[hub.git] / application / hub / main / filter / tags / class_PackageSelfConnectTagFilter.php
1 <?php
2 /**
3  * A SelfConnectTag filter for Package
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 PackageSelfConnectTagFilter extends BaseFilter implements FilterablePackage {
25         /**
26          * Array with all data XML nodes (which hold the actual data) and their values
27          */
28         private $dataXmlNodes = array();
29
30         /**
31          * Protected constructor
32          *
33          * @return      void
34          */
35         protected function __construct () {
36                 // Call parent constructor
37                 parent::__construct(__CLASS__);
38
39                 // Init array
40                 $this->dataXmlNodes = array(
41                         XmlSelfConnectTemplateEngine::SELF_CONNECT_DATA_NODE_ID    => '',
42                         XmlSelfConnectTemplateEngine::SELF_CONNECT_DATA_SESSION_ID => '',
43                 );
44         }
45
46         /**
47          * Creates an instance of this filter class
48          *
49          * @return      $filterInstance         An instance of this filter class
50          */
51         public final static function createPackageSelfConnectTagFilter () {
52                 // Get a new instance
53                 $filterInstance = new PackageSelfConnectTagFilter();
54
55                 // Return the instance
56                 return $filterInstance;
57         }
58
59         /**
60          * Executes the filter with given request and response objects
61          *
62          * @param       $requestInstance        An instance of a class with an Requestable interface
63          * @param       $responseInstance       An instance of a class with an Responseable interface
64          * @return      void
65          * @throws      UnsupportedOperationException   If this method is called, please use processMessage() instead!
66          */
67         public function execute (Requestable $requestInstance, Responseable $responseInstance) {
68                 // Please don't call this method
69                 throw new UnsupportedOperationException(array($this, __FUNCTION__), self::EXCEPTION_UNSPPORTED_OPERATION);
70         }
71
72         /**
73          * Processes the given raw message content. The method renderXmlContent
74          * may throw (not the method itself) several exceptions:
75          *
76          * InvalidXmlNodeException  - If an invalid XML node has been found (e.g.
77          *                            wrong/out-dated template used)
78          * XmlNodeMismatchException - Again might be caused by invalid XML node
79          *                            usage
80          * XmlParserException       - If the XML message is damaged or not
81          *                            well-formed
82          *
83          * @param       $messageContent         Raw message content
84          * @param       $packageInstance        An instance of a Receivable class
85          * @return      void
86          * @todo        Exceptions from renderXmlContent() are currently unhandled
87          */
88         public function processMessage ($messageContent, Receivable $packageInstance) {
89                 // Get a template instance from the factory
90                 $templateInstance = XmlTemplateEngineFactory::createXmlTemplateEngineInstance('node_self_connect_template_class');
91
92                 // And render the XML content (aka message)
93                 $templateInstance->renderXmlContent($messageContent);
94
95                 /*
96                  * The template system now stores all required data as 'general'
97                  * variables, so simply get them. If there is an invalid XML node
98                  * inside the message, the above method call will cause exceptions.
99                  */
100                 foreach ($this->dataXmlNodes as $key => $dummy) {
101                         // Get the variable from template engine
102                         $value = $templateInstance->readSelfConnectData($key);
103
104                         /*
105                          * If value is NULL, a variable hasn't been found. This could mean
106                          * that *this* node is running an out-dated software or the other
107                          * peer is using an out-dated self_connect.xml template.
108                          */
109                         if (is_null($value)) {
110                                 // Output a warning
111                                 $this->debugOutput('SELF-CONNECT-TAG: Found not fully supported variable ' . $key . ' - skipping.');
112
113                                 // Skip this part, don't write NULLs to the array
114                                 continue;
115                         } // END - if
116
117                         // Debug message
118                         //* NOISY-DEBUG: */ $this->debugOutput('SELF-CONNECT-TAG: key=' . $key . ',value=' . $value);
119
120                         // Set it now
121                         $this->dataXmlNodes[$key] = $value;
122                 } // END - foreach
123
124                 // Construct an array for pushing it on next stack
125                 $messageArray = array(
126                         // Message data itself
127                         NetworkPackage::MESSAGE_ARRAY_DATA => $this->dataXmlNodes,
128                         // Message type (which is 'self_connect')
129                         NetworkPackage::MESSAGE_ARRAY_TYPE => 'self_connect'
130                 );
131
132                 // Push the processed message back on stack
133                 $packageInstance->getStackerInstance()->pushNamed(NetworkPackage::STACKER_NAME_PROCESSED_MESSAGE, $messageArray);
134         }
135 }
136
137 // [EOF]
138 ?>