public static function getInstance()
{
if (!isset(self::$instance)) {
self::$instance = new Statistics(SystemTimer::getInstance());
}
return self::$instance;
}
public static function getInstance()
{
if (!isset(self::$instance)) {
$config = FajrConfigLoader::getConfiguration();
$type = $config->get(FajrConfigOptions::DEBUG_TRACE);
$uniqueID = sha1(uniqid('trace', true));
$header = 'Trace (id: ' . $uniqueID . ')';
$tags = array('unique-id' => $uniqueID);
if ($type === FajrConfigOptions::DEBUG_TRACE_NONE) {
self::$instance = new NullTrace();
} else {
if ($type === FajrConfigOptions::DEBUG_TRACE_ARRAY) {
self::$instance = new ArrayTrace(SystemTimer::getInstance(), $header);
} else {
// File-based trace
$traceDir = $config->getDirectory(FajrConfigOptions::DEBUG_TRACE_DIR);
if ($traceDir === null) {
throw new \LogicException(FajrConfigOptions::DEBUG_TRACE_DIR . ' is not set, but is required for file-based traces');
}
$ext = $type == FajrConfigOptions::DEBUG_TRACE_TEXT ? 'txt' : 'bin';
$filename = FajrUtils::joinPath($traceDir, 'trace' . $uniqueID . '.' . $ext);
$file = @fopen($filename, 'ab');
if ($file === false) {
throw new \Exception('Cannot open trace file');
}
if ($type == FajrConfigOptions::DEBUG_TRACE_TEXT) {
self::$instance = new FileTrace(SystemTimer::getInstance(), $file, 0, $header);
} else {
self::$instance = new BinaryFileTrace(SystemTimer::getInstance(), $file, $header, $tags);
}
}
}
}
return self::$instance;
}
