Function DeleteExcessLogFiles

be/src/kudu/util/logging.cc:378–398

}

Status DeleteExcessLogFiles(Env* env) {
  int32_t max_log_files = FLAGS_max_log_files;
  // Ignore bad input or disable log rotation.
  if (max_log_files <= 0) return Status::OK();

  for (int severity = 0; severity < google::NUM_SEVERITIES; ++severity) {
    // Build glob pattern for input
    // e.g. /var/log/kudu/kudu-master.*.INFO.*
    string pattern = strings::Substitute("$0/$1.*.$2.*", FLAGS_log_dir, FLAGS_log_filename,
                                         google::GetLogSeverityName(severity));

    // Keep the 'max_log_files' most recent log files, as compared by
    // modification time. Glog files contain a second-granularity timestamp in
    // the name, so this could potentially use the filename sort order as
    // guaranteed by glob, however this code has been adapted from Impala which
    // uses mtime to determine which files to delete, and there haven't been any
    // issues in production settings.
    RETURN_NOT_OK(env_util::DeleteExcessFilesByPattern(env, pattern, max_log_files));
  }
  return Status::OK();
}

// Support for the special THROTTLE_MSG token in a log message stream.
ostream& operator<<(ostream &os, const PRIVATE_ThrottleMsg& /*unused*/) {