// `adminAPIHandlers`).
//
// - sets up call to send AuditLog
//
// While this is a middleware function (i.e. it takes a handler function and
// returns one), due to flags being passed based on required conditions, it is
// done per-"handler function registration" in the router.
//
// The passed in handler function must be a method of `adminAPIHandlers` for the

        .build()

    val dohDns = buildCloudflareIp(client)
    val dohEnabledClient =
      client
        .newBuilder()
        .eventListener(EventListener.NONE)
        .dns(dohDns)
        .build()

    dohEnabledClient.get("https://www.twitter.com/robots.txt")
    dohEnabledClient.get("https://www.facebook.com/robots.txt")
  }

  @Test

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}
```

### Dockerfile

Agora, no mesmo diretório do projeto, crie um arquivo `Dockerfile` com:

```{ .dockerfile .annotate }
# (1)
FROM python:3.9

public abstract interface class okhttp3/Authenticator {
	public static final field Companion Lokhttp3/Authenticator$Companion;
	public static final field JAVA_NET_AUTHENTICATOR Lokhttp3/Authenticator;
	public static final field NONE Lokhttp3/Authenticator;
	public abstract fun authenticate (Lokhttp3/Route;Lokhttp3/Response;)Lokhttp3/Request;
}

public final class okhttp3/Authenticator$Companion {
}

    private volatile @Nullable ScheduledExecutorService executorService;

    // This lock protects the task so we can ensure that none of the template methods (startUp,
    // shutDown or runOneIteration) run concurrently with one another.
    // TODO(lukes): why don't we use ListenableFuture to sequence things? Then we could drop the
    // lock.
    private final ReentrantLock lock = new ReentrantLock();

	// than failing with UnknownAPIRequest we simply handle it for now.
	apiRouter.Methods(http.MethodGet).Path(SlashSeparator + SlashSeparator).
		HandlerFunc(s3APIMiddleware(api.ListBucketsHandler))

	// If none of the routes match add default error handler routes
	apiRouter.NotFoundHandler = collectAPIStats("notfound", httpTraceAll(errorResponseHandler))

/// tip | Dica

O segundo parâmetro em <a href="https://docs.python.org/3.8/library/os.html#os.getenv" class="external-link" target="_blank">`os.getenv()`</a> é o valor padrão para o retorno.

Se nenhum valor for informado, `None` é utilizado por padrão, aqui definimos `"World"` como o valor padrão a ser utilizado.

///

E depois você pode executar esse arquivo:

<div class="termy">

```console
// Aqui ainda não definimos a env var

	// name is the full name of the object including prefixes
	name string
	// Metadata. If none is present it is not an object but only a prefix.
	// Entries without metadata will only be present in non-recursive scans.
	metadata []byte

	// cached contains the metadata if decoded.
	cached *xlMetaV2

	// Indicates the entry can be reused and only one reference to metadata is expected.
	reusable bool
}

HSPLokhttp3/Dispatcher;->promoteAndExecute()Z
HSPLokhttp3/Dns$Companion$DnsSystem;-><init>()V
HSPLokhttp3/Dns$Companion$DnsSystem;->lookup(Ljava/lang/String;)Ljava/util/List;
HSPLokhttp3/Dns;-><clinit>()V
HSPLokhttp3/EventListener$Companion$NONE$1;-><init>()V
HSPLokhttp3/EventListener;-><clinit>()V
HSPLokhttp3/EventListener;-><init>()V
HSPLokhttp3/EventListener;->callEnd(Lokhttp3/Call;)V
HSPLokhttp3/EventListener;->callFailed(Lokhttp3/Call;Ljava/io/IOException;)V

    private volatile @Nullable ScheduledExecutorService executorService;

    // This lock protects the task so we can ensure that none of the template methods (startUp,
    // shutDown or runOneIteration) run concurrently with one another.
    // TODO(lukes): why don't we use ListenableFuture to sequence things? Then we could drop the
    // lock.
    private final ReentrantLock lock = new ReentrantLock();