Golang Service.ValidEntity方法代码示例

// updateService internal method to use when service has been validated
func (f *Facade) updateService(ctx datastore.Context, svc *service.Service) error {
	id := strings.TrimSpace(svc.ID)
	if id == "" {
		return errors.New("empty Service.ID not allowed")
	}
	svc.ID = id
	//add assignment info to service so it is availble in zk
	f.fillServiceAddr(ctx, svc)

	svcStore := f.serviceStore

	// verify the service with name and parent does not collide with another existing service
	if s, err := svcStore.FindChildService(ctx, svc.DeploymentID, svc.ParentServiceID, svc.Name); err != nil {
		glog.Errorf("Could not verify service path for %s: %s", svc.Name, err)
		return err
	} else if s != nil {
		if s.ID != svc.ID {
			err := fmt.Errorf("service %s found at %s", svc.Name, svc.ParentServiceID)
			glog.Errorf("Cannot update service %s: %s", svc.Name, err)
			return err
		}
	}

	oldSvc, err := svcStore.Get(ctx, svc.ID)
	if err != nil {
		return err
	}

	//Deal with Service Config Files
	//For now always make sure originalConfigs stay the same, essentially they are immutable
	svc.OriginalConfigs = oldSvc.OriginalConfigs

	//check if config files haven't changed
	if !reflect.DeepEqual(oldSvc.OriginalConfigs, svc.ConfigFiles) {
		//lets validate Service before doing more work....
		if err := svc.ValidEntity(); err != nil {
			return err
		}

		tenantID, servicePath, err := f.getTenantIDAndPath(ctx, *svc)
		if err != nil {
			return err
		}

		newConfs := make(map[string]*serviceconfigfile.SvcConfigFile)
		//config files are different, for each one that is different validate and add to newConfs
		for key, oldConf := range oldSvc.OriginalConfigs {
			if conf, found := svc.ConfigFiles[key]; found {
				if !reflect.DeepEqual(oldConf, conf) {
					newConf, err := serviceconfigfile.New(tenantID, servicePath, conf)
					if err != nil {
						return err
					}
					newConfs[key] = newConf
				}
			}
		}

		//Get current stored conf files and replace as needed
		configStore := serviceconfigfile.NewStore()
		existingConfs, err := configStore.GetConfigFiles(ctx, tenantID, servicePath)
		if err != nil {
			return err
		}
		foundConfs := make(map[string]*serviceconfigfile.SvcConfigFile)
		for _, svcConfig := range existingConfs {
			foundConfs[svcConfig.ConfFile.Filename] = svcConfig
		}
		//add or replace stored service config
		for _, newConf := range newConfs {
			if existing, found := foundConfs[newConf.ConfFile.Filename]; found {
				newConf.ID = existing.ID
				//delete it from stored confs, left overs will be deleted from DB
				delete(foundConfs, newConf.ConfFile.Filename)
			}
			configStore.Put(ctx, serviceconfigfile.Key(newConf.ID), newConf)
		}
		//remove leftover non-updated stored confs, conf was probably reverted to original or no longer exists
		for _, confToDelete := range foundConfs {
			configStore.Delete(ctx, serviceconfigfile.Key(confToDelete.ID))
		}
	}

	svc.UpdatedAt = time.Now()
	if err := svcStore.Put(ctx, svc); err != nil {
		return err
	}

	// Remove the service from zookeeper if the pool ID has changed
	if oldSvc.PoolID != svc.PoolID {
		if err := zkAPI(f).RemoveService(oldSvc); err != nil {
			// Synchronizer will eventually clean this service up
			glog.Warningf("ZK: Could not delete service %s (%s) from pool %s: %s", svc.Name, svc.ID, oldSvc.PoolID, err)
			oldSvc.DesiredState = int(service.SVCStop)
			zkAPI(f).UpdateService(oldSvc)
		}
	}

	return zkAPI(f).UpdateService(svc)
//.........这里部分代码省略.........