if escape {
		keyName = url.QueryEscape(args.Object.Name)
	}

	newEvent := event.Event{
		EventVersion:      "2.0",
		EventSource:       "minio:s3",
		AwsRegion:         args.ReqParams["region"],
		EventTime:         eventTime.Format(event.AMZTimeFormat),
		EventName:         args.EventName,
		UserIdentity:      event.Identity{PrincipalID: args.ReqParams["principalId"]},
		RequestParameters: args.ReqParams,

```

In this case, the `startup` event handler function will initialize the items "database" (just a `dict`) with some values.

You can add more than one event handler function.

And your application won't start receiving requests until all the `startup` event handlers have completed.

### `shutdown` event

To add a function that should be run when the application is shutting down, declare it with the event `"shutdown"`:

		} else {
			var data []byte
			if data, err = json.Marshal(struct{ Records []event.Event }{[]event.Event{eventData}}); err != nil {
				return err
			}

			_, err = target.updateStmt.Exec(key, data)
		}
		return err
	}

	if target.args.Format == event.AccessFormat {
		eventTime, err := time.Parse(event.AMZTimeFormat, eventData.EventTime)
		if err != nil {
			return err
		}

Diese Funktionen können mit `async def` oder normalem `def` deklariert werden.

### `startup`-Event

Um eine Funktion hinzuzufügen, die vor dem Start der Anwendung ausgeführt werden soll, deklarieren Sie diese mit dem Event `startup`:

```Python hl_lines="8"
{!../../../docs_src/events/tutorial001.py!}
```

		ntargets[k] = v
	}
	return ntargets
}

// Send - sends events to targets identified by target IDs.
func (list *TargetList) Send(event Event, targetIDset TargetIDSet, sync bool) {
	if sync {
		list.sendSync(event, targetIDset)
	} else {
		list.sendAsync(event, targetIDset)
	}
}

func (list *TargetList) sendSync(event Event, targetIDset TargetIDSet) {
	var wg sync.WaitGroup
	for id := range targetIDset {

	}
}

func (sys *LifecycleSys) trace(oi ObjectInfo) func(event string) {
	startTime := time.Now()
	return func(event string) {
		duration := time.Since(startTime)
		if globalTrace.NumSubscribers(madmin.TraceILM) > 0 {
			globalTrace.Publish(ilmTrace(startTime, duration, oi, event))
		}
	}
}

type expiryTask struct {
	objInfo ObjectInfo
	event   lifecycle.Event
	src     lcEventSrc
}

    @Override
    public void buildExtensionsAssembled(ModelBuildingEvent event) {
        Model model = new Model(event.model());

        try {
            pluginRepositories = projectBuildingHelper.createArtifactRepositories(
                    model.getPluginRepositories(), pluginRepositories, projectBuildingRequest);
        } catch (Exception e) {
            event.problems()
                    .add(

		buf := bytes.NewBuffer(grid.GetByteBuffer()[:0])
		enc := json.NewEncoder(buf)
		tmpEvt := struct{ Records []event.Event }{[]event.Event{{}}}
		for {
			select {
			case ev := <-localCh:
				buf.Reset()
				tmpEvt.Records[0] = ev
				if err := enc.Encode(tmpEvt); err != nil {
					bugLogIf(ctx, err, "event: Encode failed")
					continue
				}
				mergeCh <- append(grid.GetByteBuffer()[:0], buf.Bytes()...)

     *
     * @param event The details about the event.
     */
    default void buildExtensionsAssembled(ModelBuildingEvent event) {}

# Events testen: Hochfahren – Herunterfahren

Wenn Sie in Ihren Tests Ihre Event-Handler (`startup` und `shutdown`) ausführen wollen, können Sie den `TestClient` mit einer `with`-Anweisung verwenden:

```Python hl_lines="9-12  20-24"
{!../../../docs_src/app_testing/tutorial003.py!}