TemplatesObserver


1   //
2   //                                   ____.
3   //                       __/\ ______|    |__/\.     _______
4   //            __   .____|    |       \   |    +----+       \
5   //    _______|  /--|    |    |    -   \  _    |    :    -   \_________
6   //   \\______: :---|    :    :           |    :    |         \________>
7   //           |__\---\_____________:______:    :____|____:_____\
8   //                                      /_____|
9   //
10  //                 . . . i n   j a h i a   w e   t r u s t . . .
11  //
12  //
13  //
14  //  TemplatesObserver
15  //
16  //  NK      23.04.2001
17  //
18  //
19  
20  
21  package org.jahia.services.deamons.filewatcher.templateobserver;
22  
23  
24  import org.jahia.exceptions.JahiaException;
25  import org.jahia.exceptions.JahiaInitializationException;
26  import org.jahia.registries.ServicesRegistry;
27  import org.jahia.services.deamons.filewatcher.JahiaFileWatcherService;
28  import org.jahia.services.pages.JahiaPageTemplateService;
29  import org.jahia.services.sites.JahiaSite;
30  import org.jahia.services.sites.JahiaSitesService;
31  import org.jahia.services.templates_deployer.JahiaTemplatesDeployerService;
32  
33  import java.util.Observable  ;
34  import java.util.Observer  ;
35  import java.util.Vector  ;
36  
37  
38  /**
39   * An Observable object
40   *
41   * @author Khue ng
42   * @version 1.0
43   */
44  public class TemplatesObserver implements Observer   {
45  
46      private static org.apache.log4j.Logger logger =
47              org.apache.log4j.Logger.getLogger (TemplatesObserver.class);
48  
49      /** used to attach an observer with a site * */
50      private int mSiteID = -1;
51  
52      /** the path of the folder to watch * */
53      private String   mPath;
54  
55      /** check new file by last modif date or not * */
56      private boolean mCheckDate = false;
57  
58      /** the interval * */
59      private long mInterval;
60  
61      /** Check bot files and directory * */
62      private boolean mFileOnly = true;
63  
64  
65      /**
66       * Constructor
67       *
68       * @param int     siteID, used to attach a observer with a site
69       * @param String  path, the path of directory to watch.
70       * @param boolean checkDate, check by last modif date or not
71       * @param long    interval, the interval of check
72       * @param boolean fileOnly, check both new files and directory
73       */
74      public TemplatesObserver (int siteID,
75                                String   path,
76                                boolean checkDate,
77                                long interval,
78                                boolean fileOnly) throws JahiaException {
79  
80  
81          mSiteID = siteID;
82          mPath = path;
83          mCheckDate = checkDate;
84          mInterval = interval;
85          mFileOnly = fileOnly;
86  
87          JahiaFileWatcherService fws = ServicesRegistry
88                  .getInstance ()
89                  .getJahiaFileWatcherService ();
90  
91          if (fws != null) {
92  
93              try {
94                  fws.addFileWatcher (mPath,
95                          mPath,
96                          mCheckDate,
97                          mInterval,
98                          mFileOnly);
99  
100                 fws.registerObserver (mPath, this);
101                 fws.startFileWatcher (mPath);
102 
103             } catch (Throwable   t) {
104 
105                 logger.debug ("Error in templates observer initialization", t);
106 
107                 throw new JahiaInitializationException ("TemplatesObserver::init failed ");
108             }
109         }
110     }
111 
112 
113     //-------------------------------------------------------------------------
114     /**
115      * Handles new files detection
116      */
117     public void update (Observable   subject,
118                         Object   args) {
119 
120         synchronized (args) {
121 
122             JahiaPageTemplateService pts = ServicesRegistry.getInstance ()
123                     .getJahiaPageTemplateService ();
124 
125             JahiaSitesService ss = ServicesRegistry.getInstance ()
126                     .getJahiaSitesService ();
127 
128             JahiaTemplatesDeployerService tds = ServicesRegistry.getInstance ()
129                     .getJahiaTemplatesDeployerService ();
130 
131             if (pts != null && pts.isInitialized ()
132                     && ss != null && ss.isInitialized ()
133                     && tds != null && tds.isInitialized ()) {
134 
135                 Vector   files = (Vector  ) args;
136 
137                 try {
138                     JahiaSite site = ss.getSite (mSiteID);
139                     if (site != null) {
140                         tds.deploy (site, files);
141                     }
142                     org.jahia.services.database.ConnectionDispenser.terminateConnection ();
143                 } catch (Throwable   t) {
144                     logger.error ("Error in templates observer initialization", t);
145                 }
146             }
147         }
148     }
149 
150 
151 } // end JahiaTemplateObserverService
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