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Add "visitorDeleteOld" event

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This commit is contained in:
Dmitriy Simushev 2014-10-31 11:51:08 +00:00
parent f0c4299ba3
commit 3b43090bda
2 changed files with 39 additions and 2 deletions
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9
src/mibew/libs/classes/Mibew/EventDispatcher/Events.php
View File

@ -498,4 +498,13 @@ final class Events
* structure.
*/
const VISITOR_TRACK = 'visitorTrack';
/**
* Old visitors are deleted.
*
* This event is triggered after old visitors are deleted. An associative
* array with the following items is passed to the event handlers:
* - "visitors": array, list of removed visitors' IDs.
*/
const VISITOR_DELETE_OLD = 'visitorDeleteOld';
}

32
src/mibew/libs/track.php
View File

@ -193,12 +193,17 @@ function track_retrieve_details($visitor)
}
/**
* Remove old visitors
* Remove old visitors.
*
* Triggers {@link \Mibew\EventDispatcher\Events::VISITOR_DELETE_OLD} event.
*/
function track_remove_old_visitors()
{
$lock = new ProcessLock('visitors_remove_old');
if ($lock->get()) {
// Freeze the time for the whole process
$now = time();
$db = Database::getInstance();
// Remove associations of visitors with closed threads
@ -211,6 +216,23 @@ function track_remove_old_visitors()
. "AND istate <> " . Thread::STATE_LEFT . ") = 0 "
);
// Get all visitors that will be removed. They will be used in the
// "delete" event later.
$rows = $db->query(
("SELECT visitorid FROM {sitevisitor} "
. "WHERE (:now - lasttime) > :lifetime "
. "AND threadid IS NULL"),
array(
':lifetime' => Settings::get('tracking_lifetime'),
':now' => $now,
),
array('return_rows' => Database::RETURN_ALL_ROWS)
);
$removed_visitors = array();
foreach ($rows as $row) {
$removed_visitors[] = $row['visitorid'];
}
// Remove old visitors
$db->query(
("DELETE FROM {sitevisitor} "
@ -218,10 +240,16 @@ function track_remove_old_visitors()
. "AND threadid IS NULL"),
array(
':lifetime' => Settings::get('tracking_lifetime'),
':now' => time(),
':now' => $now,
)
);
// Trigger the "delete" event only if visitors was removed.
if (count($removed_visitors) > 0) {
$args = array('visitors' => $removed_visitors);
EventDispatcher::getInstance()->triggerEvent(Events::VISITOR_DELETE_OLD, $args);
}
// Release the lock
$lock->release();
}