/**
* Sends to the logging subsystem the perf data in $values.
* - checking first if there is any logging filter class registered
* - removing from $values all variables not defined in ezperformancelogger.ini/TrackVars
*
* @too !important split method in 2 methods, with one public and one protected?
*/
protected static function logIfNeeded(array $values, &$output)
{
// check if there is any registered filter class. If there is, ask it whether we should log or not
$skip = false;
$filters = eZPerfLoggerINI::variable('GeneralSettings', 'LogFilters');
// cater to 'array reset' situations: only 1 empty val in the array
if (count($filters) > 1 || count($filters) == 1 && $filters[0] != '') {
$skip = true;
foreach ($filters as $filterClass) {
if (call_user_func_array(array($filterClass, 'shouldLog'), array($values, $output))) {
$skip = false;
break;
}
}
}
if (!$skip) {
// build the array with the values we want to record in the logs -
// only the ones corresponding to variables defined in the ini file,
// not all the values measured so far
$toLog = array();
foreach (eZPerfLoggerINI::variable('GeneralSettings', 'TrackVariables') as $varName) {
$toLog[$varName] = isset($values[$varName]) ? $values[$varName] : null;
}
// for each logging type configured, log values to it, using the class which supports it
foreach (eZPerfLoggerINI::variable('GeneralSettings', 'LogMethods') as $logMethod) {
$logged = false;
foreach (eZPerfLoggerINI::variable('GeneralSettings', 'LogProviders') as $loggerClass) {
/// @todo !important check that $loggerClass exposes the correct interface
if (in_array($logMethod, call_user_func(array($loggerClass, 'supportedLogMethods')))) {
call_user_func_array(array($loggerClass, 'doLog'), array($logMethod, $toLog, &$output));
$logged = true;
break;
}
}
if (!$logged) {
eZPerfLoggerDebug::writeError("Could not log perf data to log '{$logMethod}', no logger class supports it", __METHOD__);
}
}
}
}
/**
* Writes a "token file"
* This is useful whenever there are log files which get parse based on cronjobs
* and we have to remember the last line which has been found
*/
protected static function writeUpdateToken($tokenFile, $tokenLine)
{
$sys = eZSys::instance();
$updateViewLogPath = $sys->varDirectory() . "/" . eZPerfLoggerINI::variable('FileSettings', 'LogDir', 'site.ini') . "/" . $tokenFile;
$dt = new eZDateTime();
if (!file_put_contents($updateViewLogPath, "# Finished at " . $dt->toString() . "\n" . "# Last updated entry:" . "\n" . $tokenLine . "\n")) {
eZPerfLoggerDebug::writeError("Could not store last date of perf-log file parsing in {$updateViewLogPath}, double-counting might occur", __METHOD__);
}
}