/**
 * A type implemented by, or extended by maven itself.
 * Maven provides implementations of those types and may inject them in plugins.
 * <p>
 * A type can be marked {@link Consumer} or {@link Provider} but not both. A type is assumed to be
 * {@link Consumer} if it is not marked either {@link Consumer} or {@link Provider}.
 * <p>
 * A package can be marked {@link Provider}. In this case, all types in the package are considered

var (
	ErrNotImplemented     = errors.New("function not implemented")
	ErrAccessTokenExpired = errors.New("access_token expired or unauthorized")
)

// Provider implements identity provider specific admin operations, such as
// looking up users, fetching additional attributes etc.
type Provider interface {
	LoginWithUser(username, password string) error
	LoginWithClientID(clientID, clientSecret string) error
	LookupUser(userid string) (User, error)

import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

/**
 * Can be used on a static method to provide a bean.
 */
@Target(METHOD)
@Retention(RUNTIME)
@Documented

  <groupId>maven-test</groupId>
  <artifactId>scope-provided</artifactId>
  <version>1.0</version>
  <dependencies>

    <dependency>
      <groupId>maven-test-provided</groupId>
      <artifactId>scope-default</artifactId>
      <version>1.0</version>
    </dependency>

    <dependency>
      <groupId>maven-test-provided</groupId>
      <artifactId>scope-test</artifactId>
      <version>1.0</version>

/// 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

# Deploy FastAPI on Cloud Providers

You can use virtually **any cloud provider** to deploy your FastAPI application.

In most of the cases, the main cloud providers have guides to deploy FastAPI with them.

## Cloud Providers - Sponsors

Some cloud 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**.

	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)
	}
}

            protected final TimeZone provided = FessUserTimeZoneProcessProvider.centralTimeZone;

            @Override
            public TimeZone provide() {
                return provided;
            }

            @Override
            public String toString() {
                return DfTypeUtil.toClassTitle(this) + ":{" + provided.getID() + "}";
            }
        };
    }

Fess is based on [OpenSearch](https://github.com/opensearch-project/OpenSearch), but knowledge/experience about OpenSearch is _not_ required. Fess provides an easy to use Administration GUI to configure the system via your browser.

configurations.archives.get().allArtifacts.removeIf {
    it.name != "plugins"
}

val pgpSigningKey: Provider<String> = providers.environmentVariable("PGP_SIGNING_KEY")
val pgpSigningPassPhrase: Provider<String> = providers.environmentVariable("PGP_SIGNING_KEY_PASSPHRASE")
val signArtifacts: Boolean = !pgpSigningKey.orNull.isNullOrEmpty()