private static function get_exclusive_by_semaphore()
{
if (JxBotExclusion::$sem = sem_get(ftok(__FILE__, "j"), 1)) {
if (!sem_acquire(JxBotExclusion::$sem, true)) {
return false;
}
return true;
}
throw new Exception("Couldn't acquire System V semaphore.");
return false;
}
public static function process_scheduled()
{
/* detatch from invoking HTTP process so we can't be interrupted */
JxBotAsyncLoader::detatch_http_request();
/* ensure we are the only instance running this process */
try {
if (!JxBotExclusion::get_exclusive()) {
return;
}
} catch (Exception $err) {
JxBotAsyncLoader::log(JxBotAsyncLoader::LOG_LEVEL_ERROR, $err->getMessage(), '');
return;
}
/* iterate through all scheduled files */
while (true) {
$stmt = JxBotDB::$db->prepare('SELECT name FROM file WHERE status = \'Scheduled\' ORDER BY name LIMIT 1');
$stmt->execute();
$next = $stmt->fetchAll(PDO::FETCH_NUM);
if (count($next) == 0) {
return;
}
/* we're done */
$file = $next[0][0];
/* flag the file to indicate we're processing it, and prevent a loop if something is amiss */
JxBotAsyncLoader::set_file_status($file, 'Loading');
/* does the file actually exist? */
$path = JxBotConfig::aiml_dir() . $file;
if (!file_exists($path)) {
JxBotAsyncLoader::set_file_status($file, 'Not Available');
continue;
}
/* run the AIML importer */
$importer = new JxBotAimlImport();
$result = $importer->import($path);
// ! TODO: The notices, warnings and errors of this mechanism should be
// sent to us via our log() method, not passed back in an array. **
/* check for errors and notices */
if (is_array($result)) {
JxBotAsyncLoader::set_file_status($file, 'Loaded');
JxBotAsyncLoader::log(JxBotAsyncLoader::LOG_LEVEL_NOTICE, 'Loaded.', $file);
/* log the results */
foreach ($result as $notice) {
JxBotAsyncLoader::log(JxBotAsyncLoader::LOG_LEVEL_WARNING, $notice, $file);
}
} else {
JxBotAsyncLoader::set_file_status($file, 'Load Error');
JxBotAsyncLoader::log(JxBotAsyncLoader::LOG_LEVEL_ERROR, $result, $file);
}
}
}