Fixes #2805, made LogDataPurger delete unused actions from log_actions.

Notes:

  * Added more priority levels for scheduled tasks. Priorities can be between 0 and 12 now.
  * Modified priority of purge data tasks to have LOW priority and optimize tables task to have LOWEST priority.
  * Fixed bug introduced in #53 w/ regard to task priorities. lowest priority tasks were not being run.
  * Added Piwik_LockTables & Piwik_UnlockTables functions to PluginsFunctions/Sql.php.
  * Added prefixTables(...) utility function to Piwik_Common.



git-svn-id: http://dev.piwik.org/svn/trunk@6221 59fd770c-687e-43c8-a1e3-f5a4ff64c105

1 files changed, 10 insertions, 3 deletions

diff --git a/core/ScheduledTask.php b/core/ScheduledTask.php
index b1e5ee63bc..dc0dff48fb 100644
--- a/core/ScheduledTask.php
+++ b/core/ScheduledTask.php
@@ -18,9 +18,11 @@
  */
 class Piwik_ScheduledTask
 {
-	const LOW_PRIORITY = 2;
-	const NORMAL_PRIORITY = 1;
-	const HIGH_PRIORITY = 0;
+	const LOWEST_PRIORITY 	= 12;
+	const LOW_PRIORITY 		= 9;
+	const NORMAL_PRIORITY 	= 6;
+	const HIGH_PRIORITY 	= 3;
+	const HIGHEST_PRIORITY 	= 0;
 	
 	/**
 	 * Class name where the specified method is located
@@ -48,6 +50,11 @@ class Piwik_ScheduledTask
 
 	function __construct( $_className, $_methodName, $_scheduledTime, $_priority = self::NORMAL_PRIORITY )
 	{
+		if ($_priority < self::HIGHEST_PRIORITY || $_priority > self::LOWEST_PRIORITY)
+		{
+			throw new Exception("Invalid priority for ScheduledTask '$_className.$_methodName': $_priority");
+		}
+		
 		$this->className = $_className;
 		$this->methodName = $_methodName;
 		$this->scheduledTime = $_scheduledTime;