```Python hl_lines="6"
{!../../docs_src/events/tutorial002.py!}
```

Aqui, a função de manipulação de evento `shutdown` irá escrever uma linha de texto `"Application shutdown"` no arquivo `log.txt`.

/// info | "Informação"

/// info

Webhooks are available in OpenAPI 3.1.0 and above, supported by FastAPI `0.99.0` and above.

///

## An app with webhooks

When you create a **FastAPI** application, there is a `webhooks` attribute that you can use to define *webhooks*, the same way you would define *path operations*, for example with `@app.webhooks.post()`.

{* ../../docs_src/openapi_webhooks/tutorial001.py hl[9:13,36:53] *}

	if err != nil {
		return nil, fmt.Errorf("failed to get system cert pool: %w", err)
	}
	gcpCreds, err := oauth.NewApplicationDefault(ctx)
	if err != nil {
		return nil, fmt.Errorf("failed to get application default credentials: %w", err)
	}

	return []grpc.DialOption{
		grpc.WithTransportCredentials(credentials.NewTLS(&tls.Config{
			RootCAs:    systemRoots,
			MinVersion: tls.VersionTLS12,
		})),

                .<ExtractorFactory> singleton("extractorFactory", ExtractorFactory.class, factory -> {
                    TikaExtractor tikaExtractor = container.getComponent("tikaExtractor");
                    factory.addExtractor("application/pdf", tikaExtractor);
                });
        emlExtractor = container.getComponent("emlExtractor");
    }

    public void test_getText() throws IOException {

### Create Database Tables on Startup

We will create the database tables when the application starts.

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[32:37] hl[35:37] *}

Here we create the tables on an application startup event.

For production you would probably use a migration script that runs before you start your app. 🤓

/// tip

 * to a remote host. Newer TLS options are quite useful:
 *
 *  * Server Name Indication (SNI) enables one IP address to negotiate secure connections for
 *    multiple domain names.
 *
 *  * Application Layer Protocol Negotiation (ALPN) enables the HTTPS port (443) to be used to
 *    negotiate HTTP/2.
 *
 * Unfortunately, older HTTPS servers refuse to connect when such options are presented. Rather than

//	    err := globalTierJournal.AddEntry(jentry)
//	    logger.LogIf(ctx, err)
//	}
type objSweeper struct {
	Object              string
	Bucket              string
	VersionID           string // version ID set by application, applies only to DeleteObject and DeleteObjects APIs
	Versioned           bool
	Suspended           bool
	TransitionStatus    string
	TransitionTier      string
	TransitionVersionID string
	RemoteObject        string

import java.util.Locale;
import java.util.Properties;

import org.apache.maven.jline.MessageUtils;
import org.apache.maven.utils.Os;
import org.slf4j.Logger;

/**
 * Utility class used to report errors, statistics, application version info, etc.
 *
 */
public final class CLIReportingUtils {
    // CHECKSTYLE_OFF: MagicNumber
    public static final long MB = 1024 * 1024;

    private static final long ONE_SECOND = 1000L;

 * loader and prevent it from being garbage collected. This poses a problem for environments where
 * you want to throw away the class loader. For example, dynamically reloading a web application or
 * unloading an OSGi bundle.
 *
 * <p>{@code com.google.common.base.FinalizableReferenceQueue} loads this class in its own class
 * loader. That way, this class doesn't prevent the main class loader from getting garbage

REM Disables explicit GC
set FESS_JAVA_OPTS=%FESS_JAVA_OPTS% -XX:+DisableExplicitGC

REM Ensure UTF-8 encoding by default (e.g. filenames)
set FESS_JAVA_OPTS=%FESS_JAVA_OPTS% -Dfile.encoding=UTF-8

REM Application Configuration
set APP_NAME=fess
set SEARCH_ENGINE_HOME=%FESS_HOME%/es