public void runAdHoc(Long id, String windowStartIsoString, String windowEndIsoString)
      throws Exception {
    synchronized (sync) {
      AnomalyFunctionSpec spec = specDAO.findById(id);
      if (spec == null) {
        throw new IllegalArgumentException("No function with id " + id);
      }
      AnomalyFunction anomalyFunction = anomalyFunctionFactory.fromSpec(spec);

      String triggerKey = String.format("ad_hoc_anomaly_function_trigger_%d", spec.getId());
      Trigger trigger = TriggerBuilder.newTrigger().withIdentity(triggerKey).startNow().build();

      String jobKey = String.format("ad_hoc_anomaly_function_job_%d", spec.getId());
      buildAndScheduleJob(
          jobKey, trigger, anomalyFunction, spec, windowStartIsoString, windowEndIsoString);
    }
  }
  public void start(Long id) throws Exception {
    synchronized (sync) {
      AnomalyFunctionSpec spec = specDAO.findById(id);
      if (spec == null) {
        throw new IllegalArgumentException("No function with id " + id);
      }
      AnomalyFunction anomalyFunction = anomalyFunctionFactory.fromSpec(spec);

      String triggerKey = String.format("scheduled_anomaly_function_trigger_%d", spec.getId());
      CronTrigger trigger =
          TriggerBuilder.newTrigger()
              .withIdentity(triggerKey)
              .withSchedule(CronScheduleBuilder.cronSchedule(spec.getCron()))
              .build();

      String jobKey = String.format("scheduled_anomaly_function_job_%d", spec.getId());
      scheduledJobKeys.put(id, jobKey);

      buildAndScheduleJob(jobKey, trigger, anomalyFunction, spec, null, null); // use schedule time
      // to determine
      // start/end
    }
  }