void createService(ExternalEvent event, Map<String, Object> serviceData) {
    Service svc = serviceDao.getServiceByExternalId(event.getAccountId(), event.getExternalId());
    if (svc != null) {
      return;
    }

    Stack stack = getStack(event);
    if (stack == null) {
      log.info("Can't process service event. Could not get or create stack. Event: [{}]", event);
      return;
    }

    Map<String, Object> service = new HashMap<String, Object>();
    if (serviceData != null) {
      service.putAll(serviceData);
    }
    service.put(ObjectMetaDataManager.ACCOUNT_FIELD, event.getAccountId());
    service.put(FIELD_STACK_ID, stack.getId());

    try {
      String create =
          objectProcessManager.getStandardProcessName(StandardProcess.CREATE, Service.class);
      String activate =
          objectProcessManager.getStandardProcessName(StandardProcess.ACTIVATE, Service.class);
      ProcessUtils.chainInData(service, create, activate);
      resourceDao.createAndSchedule(Service.class, service);
    } catch (ProcessCancelException e) {
      log.info(
          "Create and activate process cancelled for service with account id {}and external id {}",
          event.getAccountId(),
          event.getExternalId());
    }
  }
  void updateService(ExternalEvent event, Map<String, Object> serviceData) {
    Service svc = serviceDao.getServiceByExternalId(event.getAccountId(), event.getExternalId());
    if (svc == null) {
      log.info(
          "Unable to find service while attempting to update. Returning. Service external id: [{}], account id: [{}]",
          event.getExternalId(),
          event.getAccountId());
      return;
    }

    Map<String, Object> fields = DataUtils.getFields(svc);
    Map<String, Object> updates = new HashMap<String, Object>();
    for (Map.Entry<String, Object> resourceField : serviceData.entrySet()) {
      String fieldName = resourceField.getKey();
      Object newFieldValue = resourceField.getValue();
      Object currentFieldValue = fields.get(fieldName);
      if (ObjectUtils.hasWritableProperty(svc, fieldName)) {
        Object property = ObjectUtils.getProperty(svc, fieldName);
        if (newFieldValue != null && !newFieldValue.equals(property) || property == null) {
          updates.put(fieldName, newFieldValue);
        }
      } else if ((newFieldValue != null && !newFieldValue.equals(currentFieldValue))
          || currentFieldValue != null) {
        updates.put(fieldName, newFieldValue);
      }
    }

    if (!updates.isEmpty()) {
      objectManager.setFields(svc, updates);
      resourceDao.updateAndSchedule(svc);
    }
  }
 void deleteService(ExternalEvent event, Map<String, Object> serviceData) {
   Service svc = serviceDao.getServiceByExternalId(event.getAccountId(), event.getExternalId());
   if (svc != null) {
     objectProcessManager.scheduleStandardProcess(StandardProcess.REMOVE, svc, null);
   }
 }