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authormarcus <marcus@36083f99-b078-4883-b0ff-0f9b5a30f544>2008-12-05 19:56:39 +0000
committermarcus <marcus@36083f99-b078-4883-b0ff-0f9b5a30f544>2008-12-05 19:56:39 +0000
commit6b4cfbcb5487845d277a74e0c7d384791b39a9de (patch)
treeb3a01baf02abc2689b29a70d6677495145ba16f4
parent0be8d74f64120aed982243a18f1753f4d032c7ea (diff)
downloadelgg-6b4cfbcb5487845d277a74e0c7d384791b39a9de.tar.gz
elgg-6b4cfbcb5487845d277a74e0c7d384791b39a9de.tar.bz2
Prototype view caching
git-svn-id: https://code.elgg.org/elgg/trunk@2510 36083f99-b078-4883-b0ff-0f9b5a30f544
-rw-r--r--engine/lib/elgglib.php110
1 files changed, 105 insertions, 5 deletions
diff --git a/engine/lib/elgglib.php b/engine/lib/elgglib.php
index 15b70711f..f0dd80dc4 100644
--- a/engine/lib/elgglib.php
+++ b/engine/lib/elgglib.php
@@ -153,6 +153,101 @@
return false;
}
+
+ /**
+ * Generate a view hash.
+ *
+ * @param string $view The view name
+ * @param array $vars The view parameters
+ * @return string The hash.
+ */
+ function elgg_get_viewhash($view, $vars)
+ {
+ global $VIEW_CACHE_DISABLED, $CONFIG;
+
+ if (($VIEW_CACHE_DISABLED) || (!$CONFIG->viewcache)) return false;
+
+ $unchanged_vars = unserialize(serialize($vars));
+
+ // This is a bit of a hack, but basically we have to remove things that change on each pageload
+ if (isset($unchanged_vars['entity']->last_action)) $unchanged_vars['entity']->last_action = 0;
+ if (isset($unchanged_vars['entity']->prev_last_action)) $unchanged_vars['entity']->prev_last_action = 0;
+
+ if (isset($unchanged_vars['user']->last_action)) $unchanged_vars['user']->last_action = 0;
+ if (isset($unchanged_vars['user']->prev_last_action)) $unchanged_vars['user']->prev_last_action = 0;
+
+
+ return md5(current_page_url() . $view . serialize($uncharged_vars)); // This should be enough to stop artefacts
+
+ }
+
+ /**
+ * Cache a view.
+ *
+ * @param string $view The content.
+ * @param string $content The content.
+ * @param string $viewhash The hash
+ * @return bool
+ */
+ function elgg_cache_view($view, $content, $viewhash)
+ {
+ global $view_cache, $VIEW_CACHE_DISABLED, $CONFIG;
+
+ if (($VIEW_CACHE_DISABLED) || (!$CONFIG->viewcache)) return false;
+
+ // Cache
+ if ($viewhash)
+ {
+ error_log("MARCUS : Caching $view:$viewhash");
+ $view_cache->save($viewhash, $content);
+
+ return $viewhash;
+ }
+
+ return false;
+ }
+
+ /**
+ * Get a cached view based on its hash.
+ *
+ * @param string $viewhash
+ * @return string or false on if no cache returned.
+ */
+ function elgg_get_cached_view($viewhash)
+ {
+ global $view_cache, $VIEW_CACHE_DISABLED, $CONFIG;
+
+ if (($VIEW_CACHE_DISABLED) || (!$CONFIG->viewcache)) return false;
+
+ if ((!$view_cache) && (is_memcache_available()))
+ $view_cache = new ElggMemcache('view_cache');
+ if ($view_cache) {
+
+ $cached_view = $view_cache->load($viewhash);
+
+ if ($cached_view)
+ {
+ error_log("MARCUS : LOADED $view:$viewhash from cache");
+ return $cached_view;
+ }
+ else
+ error_log("MARCUS : View $view:$viewhash not cached");
+
+ }
+
+ return false;
+ }
+
+ /**
+ * Temporarily disable view caching.
+ *
+ */
+ function elgg_disable_view_cache()
+ {
+ global $VIEW_CACHE_DISABLED;
+
+ $VIEW_CACHE_DISABLED = true;
+ }
/**
* Handles templating views
@@ -210,14 +305,18 @@
}
if (!isset($vars['js'])) {
$vars['js'] = "";
- }
-
+ }
+
// If it's been requested, pass off to a template handler instead
if ($bypass == false && isset($CONFIG->template_handler) && !empty($CONFIG->template_handler)) {
$template_handler = $CONFIG->template_handler;
return $template_handler($view, $vars);
}
+ // Attempt to memcache views.
+ /*$view_hash = elgg_get_viewhash($view, $vars);
+ $cached_view = elgg_get_cached_view($view_hash);
+ if ($cached_view) return $cached_view;*/
// Get the current viewtype
$viewtype = elgg_get_viewtype();
@@ -251,9 +350,7 @@
error_log($view_location . "{$viewtype}/{$view}.php");
error_log(" [This view ({$view}) does not exist] ");
}
-
-
-
+
}
// Save the output buffer into the $content variable
@@ -261,6 +358,9 @@
// Plugin hook
$content = trigger_plugin_hook('display','view',array('view' => $view),$content);
+
+ // Cache view
+ //elgg_cache_view($view, $content, $view_hash);
// Return $content
return $content;