Method QueryLimitOverride

src/query/QueryLimitOverride.java:90–116

Default ctor. If a file location is given, it will be read on construction and reloaded every interval seconds. Note that if there is a problem reading or parsing the config file (when set) the ctor will continue loading with the defaults and if an interval is set, will attempt to reload at a later

(final TSDB tsdb)

   * @throws IllegalArgumentException if the default limits are less than zero.
   */
  public QueryLimitOverride(final TSDB tsdb) {
    overrides = Maps.newConcurrentMap();
    default_byte_limit = tsdb.getConfig().getLong("tsd.query.limits.bytes.default");
    default_data_points_limit = tsdb.getConfig()
        .getLong("tsd.query.limits.data_points.default");
    if (tsdb.getConfig().hasProperty("tsd.query.limits.overrides.interval")) {
      reload_interval = tsdb.getConfig().getInt("tsd.query.limits.overrides.interval");
    } else {
      reload_interval = 0;
    }
    file_location = tsdb.getConfig().getString("tsd.query.limits.overrides.config");
    timer = (HashedWheelTimer) tsdb.getTimer();
    if (default_byte_limit < 0) {
      throw new IllegalArgumentException("The default byte limit cannot be negative");
    }
    if (default_data_points_limit < 0) {
      throw new IllegalArgumentException("The default data points limit cannot"
          + " be negative");
    }
    
    if (!Strings.isNullOrEmpty(file_location)) {
      loadFromFile();
      if (reload_interval > 0) {
        timer.newTimeout(this, reload_interval, TimeUnit.SECONDS);
      }
    }
  }
  
  /** @return The default byte limit used when a match fails */
  public long getDefaultByteLimit() {