optional ContainerResourceMetricSource containerResource = 7;

  // external refers to a global metric that is not associated
  // with any Kubernetes object. It allows autoscaling based on information
  // coming from components running outside of cluster
  // (for example length of queue in cloud messaging service, or
  // QPS from loadbalancer running outside of cluster).
  // +optional
  optional ExternalMetricSource external = 5;
}

    # Download and extract the binary to the output directory.
    echo "Downloading ${SIDECAR}: $1 to $2"
    time ${DOWNLOAD_COMMAND} --header "${AUTH_HEADER:-}" "$1" |\
      tar --extract --gzip --strip-components=3 --to-stdout > "$2"
    chmod +x "$2"

    # Make a copy named just "envoy" in the same directory (overwrite if necessary).
    echo "Copying $2 to $(dirname "$2")/${3}"
    cp -f "$2" "$(dirname "$2")/${3}"

}

// RuntimeClassSpec is a specification of a RuntimeClass. It contains parameters
// that are required to describe the RuntimeClass to the Container Runtime
// Interface (CRI) implementation, as well as any other components that need to
// understand how the pod will be run. The RuntimeClassSpec is immutable.
message RuntimeClassSpec {
  // runtimeHandler specifies the underlying runtime and configuration that the

  name: example-istiocontrolplane
spec:
  dummy:
  traffic_management:
    components:
    namespace: istio-traffic-management
`
	validIstioConfig = `
apiVersion: install.istio.io/v1alpha1
kind: IstioOperator
metadata:
  namespace: istio-system
  name: example-istiocontrolplane
spec:
  components:
    pilot:
      enabled: true
`
	invalidDuplicateKey = `

 * <li>transition between characters and digits also constitutes a separator:
 *     <code>1.0alpha1 =&gt; [1, [alpha, 1]]</code></li>
 * <li>unlimited number of version components,</li>
 * <li>version components in the text can be digits or strings,</li>
 * <li>strings are checked for well-known qualifiers and the qualifier ordering is used for version ordering.
 *     Well-known qualifiers (case insensitive) are:<ul>

     *
     * @return a list of argument strings
     */
    @Nonnull
    List<String> args();

    /**
     * Per-request {@link Lookup} for customization.
     *
     * @return a lookup possibly with custom components
     */
    @Nonnull
    Lookup lookup();

    /**
     * Returns the current working directory for the Maven execution.
     * If not explicitly set, this value will be detected during parsing.
     *

Gebouwd als een herbruikbare tool met componenten die makkelijk te integreren zijn in en met je systemen, datastores, relationele en NoSQL databases, enz.

### Dependency Injection

FastAPI bevat een uiterst eenvoudig, maar uiterst krachtig <abbr title='ook bekend als "componenten", "bronnen", "diensten", "aanbieders"'><strong>Dependency Injection</strong></abbr> systeem.

    * Cette extension SNI permet à un seul serveur (avec une seule adresse IP) d'avoir plusieurs certificats HTTPS et de servir plusieurs domaines/applications HTTPS.
    * Pour que cela fonctionne, un seul composant (programme) fonctionnant sur le serveur, écoutant sur l'adresse IP publique, doit avoir tous les certificats HTTPS du serveur.
* Après avoir obtenu une connexion sécurisée, le protocole de communication est toujours HTTP.

Mas esse exemplo ainda é valido e mostra como interagir com os componentes internos.

///

Também podemos usar essa mesma abordagem para acessar o corpo da requisição em um manipulador de exceção.

Tudo que precisamos fazer é manipular a requisição dentro de um bloco `try`/`except`:

Esse sistema foi pensado para ser fácil de usar, e permitir que qualquer desenvolvedor possa integrar facilmente outros componentes ao **FastAPI**.

## O que é "Injeção de Dependência"