switch vendor {
	case keyCloakVendor:
		adminURL := cfgGet(KeyCloakAdminURL)
		realm := cfgGet(KeyCloakRealm)
		p.provider, err = provider.KeyCloak(
			provider.WithAdminURL(adminURL),
			provider.WithOpenIDConfig(provider.DiscoveryDoc(p.DiscoveryDoc)),
			provider.WithTransport(transport),
			provider.WithRealm(realm),
		)
		return err
	default:
		return fmt.Errorf("Unsupported vendor %s", keyCloakVendor)
	}
}

# Dependencies

**FastAPI** has a very powerful but intuitive **<abbr title="also known as components, resources, providers, services, injectables">Dependency Injection</abbr>** system.

It is designed to be very simple to use, and to make it very easy for any developer to integrate other components with **FastAPI**.

## What is "Dependency Injection"

Então, crie um arquivo `traefik.toml` com:

```TOML hl_lines="3"
[entryPoints]
  [entryPoints.http]
    address = ":9999"

[providers]
  [providers.file]
    filename = "routes.toml"
```

Isso diz ao Traefik para escutar na porta 9999 e usar outro arquivo `routes.toml`.

/// tip | "Dica"

Or it might be the case that you just prefer to take other courses because they adapt better to your learning style.

Some course providers ✨ [**sponsor FastAPI**](../help-fastapi.md#sponsor-the-author){.internal-link target=_blank} ✨, this ensures the continued and healthy **development** of FastAPI and its **ecosystem**.

  testopenjsse:
    runs-on: ubuntu-latest
    if: contains(github.event.pull_request.labels.*.name, 'providers')

    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Configure JDK
        uses: actions/setup-java@v4
        with:

  private static final ImmutableSet<String> INPUTS = ImmutableSet.of("", "Z", "foobar");

  // From "How Provider Implementations Are Requested and Supplied" from
  // http://docs.oracle.com/javase/6/docs/technotes/guides/security/crypto/CryptoSpec.html
  //  - Some providers may choose to also include alias names.
  //  - For example, the "SHA-1" algorithm might be referred to as "SHA1".

import org.eclipse.aether.named.NamedLockFactory;
import org.eclipse.aether.named.providers.FileLockNamedLockFactory;
import org.eclipse.aether.named.providers.LocalReadWriteLockNamedLockFactory;
import org.eclipse.aether.named.providers.LocalSemaphoreNamedLockFactory;
import org.eclipse.aether.named.providers.NoopNamedLockFactory;
import org.eclipse.aether.spi.artifact.ArtifactPredicateFactory;

/// tip

Integrating other authentication/authorization providers like Google, Facebook, Twitter, GitHub, etc. is also possible and relatively easy.

The most complex problem is building an authentication/authorization provider like those, but **FastAPI** gives you the tools to do it easily, while doing the heavy lifting for you.

///

## **FastAPI** utilities

WARRANTIES OR CONDITIONS OF ANY ## KIND, either express or implied. See the License for the ## specific language governing permissions and limitations ## under the License. ## This software bundles the following NOTICE files from third party library providers: META-INF/NOTICE in archive lib/guice-5.1.0.jar Google Guice - Core Library Copyright 2006-2022 Google, Inc. This product includes software developed at The Apache Software Foundation (http://www.apache.org/). META-INF/NOTICE in archive lib/plexus-utils-3.2.1.jar...

def acceptedViolations = AcceptedApiChanges.parse(apiChangesJsonDirectory.asFile.listFiles()
    .findAll { it.name.endsWith(".json") }
    .collect { providers.fileContents(apiChangesJsonDirectory.file(it.name)).asText.get() }
)

def compatibilityBaselineVersion = moduleIdentity.releasedVersions.get().mostRecentRelease.version