1 <?php
 2 
 3 /**
 4  * This static publisher can be used to deploy static content to multiple hosts, by generating the cache files locally and then rsyncing then to
 5  * each destination box.  This can be used to set up a load-balanced collection of static servers.
 6  * 
 7  * @see http://doc.silverstripe.com/doku.php?id=staticpublisher
 8  *
 9  * @package cms
10  * @subpackage publishers
11  */
12 class RsyncMultiHostPublisher extends FilesystemPublisher {
13     /**
14      * Array of rsync targets to publish to.  These can either be local file names, or scp-style targets, in the form "user@server:path"
15      */
16     static $targets;
17     
18     /**
19      * Set the targets to publish to.
20      * If target is an scp-style remote path, no password is accepted - we assume key-based authentication to be set up on the application server
21      * initiating the publication.
22      * 
23      * @param $targets An array of targets to publish to.  These can either be local file names, or scp-style targets, in the form "user@server:path"
24      */
25     static function set_targets($targets) {
26         self::$targets = $targets;
27     }
28 
29     function publishPages($urls) {
30         parent::publishPages($urls);
31         $base = Director::baseFolder();
32 
33         // Get variable that can turn off the rsync component of publication 
34         if(isset($_GET['norsync']) && $_GET['norsync']) return;
35         
36         foreach(self::$targets as $target) {
37             // Transfer non-PHP content from everything to the target; that will ensure that we have all the JS/CSS/etc
38             $rsyncOutput = `cd $base; rsync -av -e ssh --exclude /.htaccess --exclude '*.php' --exclude '*.svn' --exclude '*~' --delete . $target`;
39             // Then transfer "safe" PHP from the cache/ directory
40             $rsyncOutput .= `cd $base; rsync -av -e ssh --exclude '*.svn' --exclude '*~' --delete cache $target`;
41             if(StaticPublisher::echo_progress()) echo $rsyncOutput;
42         }
43     }
44     
45 }
46