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 { #shutdown-event }

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

# Testing Events: lifespan and startup - shutdown { #testing-events-lifespan-and-startup-shutdown }

When you need `lifespan` to run in your tests, you can use the `TestClient` with a `with` statement:

{* ../../docs_src/app_testing/tutorial004.py hl[9:15,18,27:28,30:32,41:43] *}


You can read more details about the ["Running lifespan in tests in the official Starlette documentation site."](https://www.starlette.io/lifespan/#running-lifespan-in-tests)

The process normally is that **you define** in your code what is the message that you will send, the **body of the request**.

You also define in some way at which **moments** your app will send those requests or events.

And **your users** define in some way (for example in a web dashboard somewhere) the **URL** where your app should send those requests.

/// tip

Note that we're using async/await with the new `AsyncClient` - the request is asynchronous.

///

/// warning

If your application relies on lifespan events, the `AsyncClient` won't trigger these events. To ensure they are triggered, use `LifespanManager` from <a href="https://github.com/florimondmanca/asgi-lifespan#usage" class="external-link" target="_blank">florimondmanca/asgi-lifespan</a>.

///

permissions: read-all

jobs:
  analysis:
    name: Scorecard analysis
    runs-on: ubuntu-latest
    permissions:
      # Needed to upload the results to code-scanning dashboard.
      security-events: write
      # Needed to publish results and get a badge (see publish_results below).
      id-token: write
      # Uncomment the permissions below if installing in a private repository.
      # contents: read

			if err != nil {
				writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
				return
			}
			event := evalActionFromLifecycle(ctx, *lc, rcfg, replcfg, objInfo)
			if event.Action.Delete() {
				// apply whatever the expiry rule is.
				applyExpiryRule(event, lcEventSrc_s3GetObject, objInfo)
				if !event.Action.DeleteRestored() {
					// If the ILM action is not on restored object return error.

        }
    }

    /**
     * Handle node unavailable events
     */
    private void handleNodeUnavailable(WitnessNotification notification) {
        log.warn("Node unavailable: {}", notification.getResourceName());
        // Could trigger failover logic here
    }

    /**
     * Handle node available events
     */
    private void handleNodeAvailable(WitnessNotification notification) {

https://yourapi.com/invoices/?callback_url=https://www.external.org/events
```

with a JSON body of:

```JSON
{
    "id": "2expen51ve",
    "customer": "Mr. Richie Rich",
    "total": "9999"
}
```

then *your API* will process the invoice, and at some point later, send a callback request to the `callback_url` (the *external API*):

```
https://www.external.org/events/invoices/2expen51ve
```

    - advanced/middleware.md
    - advanced/sub-applications.md
    - advanced/behind-a-proxy.md
    - advanced/templates.md
    - advanced/websockets.md
    - advanced/events.md
    - advanced/testing-websockets.md
    - advanced/testing-events.md
    - advanced/testing-dependencies.md
    - advanced/async-tests.md
    - advanced/settings.md
    - advanced/openapi-callbacks.md
    - advanced/openapi-webhooks.md

import jcifs.CIFSException;
import jcifs.Credentials;
import jcifs.RuntimeCIFSException;
import jcifs.audit.SecurityAuditLogger;
import jcifs.audit.SecurityAuditLogger.EventType;
import jcifs.audit.SecurityAuditLogger.Severity;
import jcifs.spnego.NegTokenInit;
import jcifs.util.Crypto;
import jcifs.util.SecureKeyManager;
import jcifs.util.Strings;

/**
 * This class stores and encrypts NTLM user credentials.
 *