private boolean openWriter() { if (printWriter == null) { try { FileUtils.createDirectories(FileUtils.getParent(fileName)); if (FileUtils.exists(fileName) && !FileUtils.canWrite(fileName)) { // read only database: don't log error if the trace file // can't be opened return false; } fileWriter = IOUtils.getBufferedWriter(FileUtils.newOutputStream(fileName, true)); printWriter = new PrintWriter(fileWriter, true); } catch (Exception e) { logWritingError(e); return false; } } return true; }