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* Calendar/CalDAV: reduced memory foot-print by caching alarms, calendars with lots of alarms and recurring events sync now with 128MB memory_limit

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This commit is contained in:
Ralf Becker 2013-05-16 16:00:24 +00:00
parent cb4f6102f3
commit 85c53152d1
1 changed files with 100 additions and 31 deletions
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131
calendar/inc/class.calendar_so.inc.php
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@ -300,18 +300,19 @@ class calendar_so
$events[$row['cal_id']]['#'.$row['cal_extra_name']] = $row['cal_extra_value'];
}
// alarms, atm. we read all alarms in the system, as this can be done in a single query
foreach((array)$this->async->read('cal'.(is_array($ids) ? '' : ':'.(int)$ids).':%') as $id => $job)
// alarms
if (is_array($ids))
{
list(,$cal_id) = explode(':',$id);
if (!isset($events[$cal_id])) continue; // not needed
$alarm = $job['data']; // text, enabled
$alarm['id'] = $id;
$alarm['time'] = $job['next'];
$events[$cal_id]['alarm'][$id] = $alarm;
foreach($this->read_alarms((array)$ids) as $cal_id => $alarms)
{
$events[$cal_id]['alarm'] = $alarms;
}
}
else
{
$events[$ids]['alarm'] = $this->read_alarms($ids);
}
//echo "<p>socal::read(".print_r($ids,true).")=<pre>".print_r($events,true)."</pre>\n";
return $events;
}
@ -815,24 +816,21 @@ class calendar_so
}
}
}
// alarms, atm. we read all alarms in the system, as this can be done in a single query
foreach((array)$this->async->read('cal'.(is_array($ids) ? '' : ':'.(int)$ids).':%') as $id => $job)
// alarms
foreach($this->read_alarms($ids) as $cal_id => $alarms)
{
list(,$cal_id) = explode(':',$id);
$alarm = $job['data']; // text, enabled
$alarm['id'] = $id;
$alarm['time'] = $job['next'];
$event_start = $alarm['time'] + $alarm['offset'];
if (isset($events[$cal_id])) // none recuring event
foreach($alarms as $id => $alarm)
{
$events[$cal_id]['alarm'][$id] = $alarm;
}
elseif (isset($events[$cal_id.'-'.$event_start])) // recuring event
{
$events[$cal_id.'-'.$event_start]['alarm'][$id] = $alarm;
$event_start = $alarm['time'] + $alarm['offset'];
if (isset($events[$cal_id])) // none recuring event
{
$events[$cal_id]['alarm'][$id] = $alarm;
}
elseif (isset($events[$cal_id.'-'.$event_start])) // recuring event
{
$events[$cal_id.'-'.$event_start]['alarm'][$id] = $alarm;
}
}
}
}
@ -1794,17 +1792,76 @@ ORDER BY cal_user_type, cal_usre_id
}
/**
* read the alarms of a calendar-event specified by $cal_id
* Caches all alarms read from async table to not re-read them in same request
*
* @var array cal_id => array(async_id => data)
*/
static $alarm_cache;
/**
* read the alarms of one or more calendar-event(s) specified by $cal_id
*
* alarm-id is a string of 'cal:'.$cal_id.':'.$alarm_nr, it is used as the job-id too
*
* @param int $cal_id
* @return array of alarms with alarm-id as key
* @param int|array $cal_id
* @param boolean $update_cache=null true: re-read given $cal_id, false: delete given $cal_id
* @return array of (cal_id => array of) alarms with alarm-id as key
*/
function read_alarms($cal_id)
function read_alarms($cal_id, $update_cache=null)
{
if (!isset(self::$alarm_cache) && is_array($cal_id))
{
self::$alarm_cache = array();
if ($jobs = $this->async->read('cal:%'))
{
foreach($jobs as $id => $job)
{
$alarm = $job['data']; // text, enabled
$alarm['id'] = $id;
$alarm['time'] = $job['next'];
self::$alarm_cache[$alarm['cal_id']][$id] = $alarm;
}
}
unset($update_cache); // just done
}
$alarms = array();
if (isset(self::$alarm_cache))
{
if (isset($update_cache))
{
foreach((array)$cal_id as $id)
{
if ($update_cache === false)
{
unset(self::$alarm_cache[$cal_id]);
}
elseif($update_cache === true)
{
self::$alarm_cache[$cal_id] = $this->read_alarms_nocache($cal_id);
}
}
}
if (!is_array($cal_id))
{
$alarms = (array)self::$alarm_cache[$cal_id];
}
else
{
foreach($cal_id as $id)
{
$alarms[$id] = (array)self::$alarm_cache[$id];
}
}
error_log(__METHOD__."(".array2string($cal_id).", ".array2string($update_cache).") returning from cache ".array2string($alarms));
return $alarms;
}
return $this->read_alarms_nocache($cal_id);
}
private function read_alarms_nocache($cal_id)
{
if ($jobs = $this->async->read('cal:'.(int)$cal_id.':%'))
{
foreach($jobs as $id => $job)
@ -1816,6 +1873,7 @@ ORDER BY cal_user_type, cal_usre_id
$alarms[$id] = $alarm;
}
}
error_log(__METHOD__."(".array2string($cal_id).") returning ".array2string($alarms));
return $alarms;
}
@ -1878,6 +1936,9 @@ ORDER BY cal_user_type, cal_usre_id
// update the modification information of the related event
if ($update_modified) $this->updateModified($cal_id, true);
// update cache, if used
if (isset(self::$alarm_cache)) $this->read_alarms($cal_id, true);
return $id;
}
@ -1897,6 +1958,9 @@ ORDER BY cal_user_type, cal_usre_id
{
$this->async->cancel_timer($id);
}
// update cache, if used
if (isset(self::$alarm_cache)) $this->read_alarms($cal_id, false);
return count($alarms);
}
@ -1914,7 +1978,12 @@ ORDER BY cal_user_type, cal_usre_id
{
$this->updateModified($cal_id, true);
}
return $this->async->cancel_timer($id);
$ret = $this->async->cancel_timer($id);
// update cache, if used
if (isset(self::$alarm_cache)) $this->read_alarms($cal_id, true);
return $ret;
}
/**