silverstripe-cms/code/staticpublisher/RsyncMultiHostPublisher.php

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<?php
/**
* This static publisher can be used to deploy static content to multiple hosts, by generating the cache files locally and then rsyncing then to
* each destination box. This can be used to set up a load-balanced collection of static servers.
*
* @see http://doc.silverstripe.com/doku.php?id=staticpublisher
*
* @package cms
* @subpackage publishers
*/
class RsyncMultiHostPublisher extends FilesystemPublisher {
/**
* Array of rsync targets to publish to. These can either be local file names, or scp-style targets, in the form "user@server:path"
*/
protected static $targets = array();
protected static $excluded_folders = array();
/**
* Set the targets to publish to.
* 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
* initiating the publication.
*
* @param $targets An array of targets to publish to. These can either be local file names, or scp-style targets, in the form "user@server:path"
*/
static function set_targets($targets) {
self::$targets = $targets;
}
/**
* Specify folders to exclude from the rsync
* For example, you could exclude assets.
*/
static function set_excluded_folders($folders) {
self::$excluded_folders = $folders;
}
function publishPages($urls) {
parent::publishPages($urls);
$base = Director::baseFolder();
$framework = FRAMEWORK_DIR;
// Get variable that can turn off the rsync component of publication
if(isset($_GET['norsync']) && $_GET['norsync']) return;
$extraArg = "";
if(self::$excluded_folders) foreach(self::$excluded_folders as $folder) {
$extraArg .= " --exclude " . escapeshellarg($folder);
}
foreach(self::$targets as $target) {
// Transfer non-PHP content from everything to the target; that will ensure that we have all the JS/CSS/etc
$rsyncOutput = `cd $base; rsync -av -e ssh --exclude /.htaccess --exclude /web.config --exclude '*.php' --exclude '*.svn' --exclude '*.git' --exclude '*~' $extraArg --delete . $target`;
// Then transfer "safe" PHP from the cache/ directory
$rsyncOutput .= `cd $base; rsync -av -e ssh --exclude '*.svn' --exclude '*~' $extraArg --delete cache $target`;
// Transfer framework/static-main.php to the target
$rsyncOutput .= `cd $base; rsync -av -e ssh --delete $framework/static-main.php $target/$framework`;
if(StaticPublisher::echo_progress()) echo $rsyncOutput;
}
}
}