logFile = $path; if (!file_exists($this->logFile)) { if ( ( !is_writable(dirname($this->logFile)) || !touch($this->logFile) ) && $fallbackPath !== '' ) { $this->logFile = $fallbackPath; } } $this->logFileMode = $config->getValue('logfilemode', 0640); } /** * write a message in the log * @param string|array $message */ public function write(string $app, $message, int $level): void { $entry = $this->logDetailsAsJSON($app, $message, $level); $handle = @fopen($this->logFile, 'a'); if ($this->logFileMode > 0 && is_file($this->logFile) && (fileperms($this->logFile) & 0777) != $this->logFileMode) { @chmod($this->logFile, $this->logFileMode); } if ($handle) { fwrite($handle, $entry."\n"); fclose($handle); } else { // Fall back to error_log error_log($entry); } if (php_sapi_name() === 'cli-server') { if (!\is_string($message)) { $message = json_encode($message); } error_log($message, 4); } } /** * get entries from the log in reverse chronological order */ public function getEntries(int $limit = 50, int $offset = 0): array { $minLevel = $this->config->getValue('loglevel', ILogger::WARN); $entries = []; $handle = @fopen($this->logFile, 'rb'); if ($handle) { fseek($handle, 0, SEEK_END); $pos = ftell($handle); $line = ''; $entriesCount = 0; $lines = 0; // Loop through each character of the file looking for new lines while ($pos >= 0 && ($limit === null || $entriesCount < $limit)) { fseek($handle, $pos); $ch = fgetc($handle); if ($ch == "\n" || $pos == 0) { if ($line != '') { // Add the first character if at the start of the file, // because it doesn't hit the else in the loop if ($pos == 0) { $line = $ch.$line; } $entry = json_decode($line); // Add the line as an entry if it is passed the offset and is equal or above the log level if ($entry->level >= $minLevel) { $lines++; if ($lines > $offset) { $entries[] = $entry; $entriesCount++; } } $line = ''; } } else { $line = $ch.$line; } $pos--; } fclose($handle); } return $entries; } public function getLogFilePath():string { return $this->logFile; } }