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OpenID Connect (OIDC) client and token propagation

Red Hat build of Quarkus 3.27

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Abstract

This guide details how to configure and use OpenID Connect (OIDC) clients and token propagation, including token management, request filtering, and application setup.

You can use Quarkus extensions for OpenID Connect and OAuth 2.0 access token management, focusing on acquiring, refreshing, and propagating tokens.

This includes the following:

  • Using quarkus-oidc-client, quarkus-rest-client-oidc-filter and quarkus-resteasy-client-oidc-filter extensions to acquire and refresh access tokens from OpenID Connect and OAuth 2.0 compliant Authorization Servers such as Keycloak.
  • Using quarkus-rest-client-oidc-token-propagation and quarkus-resteasy-client-oidc-token-propagation extensions to propagate the current Bearer or Authorization Code Flow access tokens.

The access tokens managed by these extensions can be used as HTTP Authorization Bearer tokens to access the remote services.

Also see OpenID Connect client and token propagation quickstart.

1.1. OidcClient
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Add the following dependency: 

<dependency>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-oidc-client</artifactId>
</dependency>
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The quarkus-oidc-client extension provides a reactive io.quarkus.oidc.client.OidcClient, which can be used to acquire and refresh tokens using SmallRye Mutiny Uni and Vert.x WebClient.

OidcClient is initialized at build time with the IDP token endpoint URL, which can be auto-discovered or manually configured. OidcClient uses this endpoint to acquire access tokens by using token grants such as client_credentials or password and refresh the tokens by using a refresh_token grant.

1.1.1. Token endpoint configuration
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By default, the token endpoint address is discovered by adding a /.well-known/openid-configuration path to the configured quarkus.oidc-client.auth-server-url.

For example, given this Keycloak URL: 

quarkus.oidc-client.auth-server-url=http://localhost:8180/auth/realms/quarkus
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OidcClient will discover that the token endpoint URL is http://localhost:8180/auth/realms/quarkus/protocol/openid-connect/tokens.

Alternatively, if the discovery endpoint is unavailable or you want to save on the discovery endpoint round-trip, you can disable the discovery and configure the token endpoint address with a relative path value. For example: 

quarkus.oidc-client.auth-server-url=http://localhost:8180/auth/realms/quarkus
quarkus.oidc-client.discovery-enabled=false
# Token endpoint: http://localhost:8180/auth/realms/quarkus/protocol/openid-connect/tokens
quarkus.oidc-client.token-path=/protocol/openid-connect/tokens
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A more compact way to configure the token endpoint URL without the discovery is to set quarkus.oidc-client.token-path to an absolute URL: 

quarkus.oidc-client.token-path=http://localhost:8180/auth/realms/quarkus/protocol/openid-connect/tokens
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Setting quarkus.oidc-client.auth-server-url and quarkus.oidc-client.discovery-enabled is not required in this case.

1.1.2. Supported token grants
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The main token grants that OidcClient can use to acquire the tokens are the client_credentials (default) and password grants.

1.1.2.1. Client credentials grant
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Here is how OidcClient can be configured to use the client_credentials grant: 

quarkus.oidc-client.auth-server-url=http://localhost:8180/auth/realms/quarkus/
quarkus.oidc-client.client-id=quarkus-app
quarkus.oidc-client.credentials.secret=secret
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The client_credentials grant allows setting extra parameters for the token request by using quarkus.oidc-client.grant-options.client.<param-name>=<value>. Here is how to set the intended token recipient by using the audience parameter: 

quarkus.oidc-client.auth-server-url=http://localhost:8180/auth/realms/quarkus/
quarkus.oidc-client.client-id=quarkus-app
quarkus.oidc-client.credentials.secret=secret
# 'client' is a shortcut for `client_credentials`
quarkus.oidc-client.grant.type=client
quarkus.oidc-client.grant-options.client.audience=https://example.com/api
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1.1.2.2. Password grant
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Here is how OidcClient can be configured to use the password grant: 

quarkus.oidc-client.auth-server-url=http://localhost:8180/auth/realms/quarkus/
quarkus.oidc-client.client-id=quarkus-app
quarkus.oidc-client.credentials.secret=secret
quarkus.oidc-client.grant.type=password
quarkus.oidc-client.grant-options.password.username=alice
quarkus.oidc-client.grant-options.password.password=alice
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It can be further customized by using a quarkus.oidc-client.grant-options.password configuration prefix, similar to how the client credentials grant can be customized.

1.1.2.3. Other grants
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OidcClient can also help acquire the tokens by using grants that require some extra input parameters that cannot be captured in the configuration. These grants are refresh_token (with the external refresh token), authorization_code, and two grants which can be used to exchange the current access token, namely, urn:ietf:params:oauth:grant-type:token-exchange and urn:ietf:params:oauth:grant-type:jwt-bearer.

If you need to acquire an access token and have posted an existing refresh token to the current Quarkus endpoint, you must use the refresh_token grant. This grant employs an out-of-band refresh token to obtain a new token set. In this case, configure OidcClient as follows: 

quarkus.oidc-client.auth-server-url=http://localhost:8180/auth/realms/quarkus/
quarkus.oidc-client.client-id=quarkus-app
quarkus.oidc-client.credentials.secret=secret
quarkus.oidc-client.grant.type=refresh
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Then you can use the OidcClient.refreshTokens method with a provided refresh token to get the access token.

Using the urn:ietf:params:oauth:grant-type:token-exchange or urn:ietf:params:oauth:grant-type:jwt-bearer grants might be required if you are building a complex microservices application and want to avoid the same Bearer token be propagated to and used by more than one service. See Token Propagation for Quarkus REST and Token Propagation for RESTEasy Classic for more details.

Using OidcClient to support the authorization code grant might be required if, for some reason, you cannot use the Quarkus OIDC extension to support Authorization Code Flow. If there is a very good reason for you to implement Authorization Code Flow, then you can configure OidcClient as follows: 

quarkus.oidc-client.auth-server-url=http://localhost:8180/auth/realms/quarkus/
quarkus.oidc-client.client-id=quarkus-app
quarkus.oidc-client.credentials.secret=secret
quarkus.oidc-client.grant.type=code
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Then, you can use the OidcClient.accessTokens method to accept a Map of extra properties and pass the current code and redirect_uri parameters to exchange the authorization code for the tokens.

OidcClient also supports the urn:openid:params:grant-type:ciba grant: 

quarkus.oidc-client.auth-server-url=http://localhost:8180/auth/realms/quarkus/
quarkus.oidc-client.client-id=quarkus-app
quarkus.oidc-client.credentials.secret=secret
quarkus.oidc-client.grant.type=ciba
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Then, you can use the OidcClient.accessTokens method to accept a Map of extra properties and pass the auth_req_id parameter to exchange the token authorization code.

1.1.2.4. Grant scopes
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You might need to request that a specific set of scopes be associated with an issued access token. Use a dedicated quarkus.oidc-client.scopes list property, for example: quarkus.oidc-client.scopes=email,phone

1.1.3. Use OidcClient directly
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You can use OidcClient directly to acquire access tokens and set them in an HTTP Authorization header as a Bearer scheme value.

For example, let’s assume the Quarkus endpoint has to access a microservice that returns a user name. First, create a REST client: 

package org.acme.security.openid.connect.client;

import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;

import io.smallrye.mutiny.Uni;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.HeaderParam;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;

@RegisterRestClient
@Path("/")
public interface RestClientWithTokenHeaderParam {

    @GET
    @Produces("text/plain")
    @Path("userName")
    Uni<String> getUserName(@HeaderParam("Authorization") String authorization);
}
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Now, use OidcClient to acquire the tokens and propagate them: 

package org.acme.security.openid.connect.client;

import org.eclipse.microprofile.rest.client.inject.RestClient;

import io.quarkus.oidc.client.runtime.TokensHelper;
import io.quarkus.oidc.client.OidcClient;

import io.smallrye.mutiny.Uni;
import jakarta.inject.Inject;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;

@Path("/service")
public class OidcClientResource {

    @Inject
    OidcClient client;
    TokensHelper tokenHelper = new TokensHelper();
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    @Inject
    @RestClient
    RestClientWithTokenHeaderParam restClient;

    @GET
    @Path("user-name")
    @Produces("text/plain")
    public Uni<String> getUserName() {
    	return tokenHelper.getTokens(client).onItem()
        		.transformToUni(tokens -> restClient.getUserName("Bearer " + tokens.getAccessToken()));
    }
}
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1
io.quarkus.oidc.client.runtime.TokensHelper manages the access token acquisition and refresh.

1.1.4. Inject tokens
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You can inject Tokens that use OidcClient internally. Tokens can be used to acquire the access tokens and refresh them if necessary: 

import jakarta.inject.Inject;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;

import io.quarkus.oidc.client.Tokens;

@Path("/service")
public class OidcClientResource {

    @Inject Tokens tokens;

    @GET
    public String getResponse() {
        //  Get the access token, which might have been refreshed.
        String accessToken = tokens.getAccessToken();
        // Use the access token to configure MP RestClient Authorization header/etc
    }
}
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1.1.5. Use OidcClients
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io.quarkus.oidc.client.OidcClients is a container of OidcClients - it includes a default OidcClient and named clients which can be configured like this: 

quarkus.oidc-client.client-enabled=false

quarkus.oidc-client.jwt-secret.auth-server-url=http://localhost:8180/auth/realms/quarkus/
quarkus.oidc-client.jwt-secret.client-id=quarkus-app
quarkus.oidc-client.jwt-secret.credentials.jwt.secret=AyM1SysPpbyDfgZld3umj1qzKObwVMkoqQ-EstJQLr_T-1qS0gZH75aKtMN3Yj0iPS4hcgUuTwjAzZr1Z9CAow
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In this case, the default client is disabled with a client-enabled=false property. The jwt-secret client can be accessed like this: 

import org.eclipse.microprofile.rest.client.inject.RestClient;

import jakarta.inject.Inject;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;
import io.smallrye.mutiny.Uni;
import io.quarkus.oidc.client.OidcClient;
import io.quarkus.oidc.client.OidcClients;
import io.quarkus.oidc.client.runtime.TokensHelper;

@Path("/clients")
public class OidcClientResource {

    @Inject
    OidcClients clients;
    TokensHelper tokenHelper = new TokensHelper();

    @Inject
    @RestClient
    RestClientWithTokenHeaderParam restClient;
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    @GET
    @Path("user-name")
    @Produces("text/plain")
    public Uni<String> getUserName() {
    	OidcClient client = clients.getClient("jwt-secret");
    	return tokenHelper.getTokens(client).onItem()
        		.transformToUni(tokens -> restClient.getUserName("Bearer " + tokens.getAccessToken()));
    }
}
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1
See the RestClientWithTokenHeaderParam declaration in the Use OidcClient directly section.
Note

If you also use OIDC multitenancy, and each OIDC tenant has its own associated OidcClient, you can use a Vert.x RoutingContext tenant-id attribute. For example: 

import jakarta.inject.Inject;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;

import io.quarkus.oidc.client.OidcClient;
import io.quarkus.oidc.client.OidcClients;
import io.vertx.ext.web.RoutingContext;

@Path("/clients")
public class OidcClientResource {

    @Inject
    OidcClients clients;
    @Inject
    RoutingContext context;

    @GET
    public String getResponse() {
        String tenantId = context.get("tenant-id");
        // named OIDC tenant and client configurations use the same key:
        OidcClient client = clients.getClient(tenantId);
        //Use this client to get the token
    }
}
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You can also create a new OidcClient programmatically. For example, let’s assume you must create it at startup time: 

package org.acme.security.openid.connect.client;

import java.util.Map;

import org.eclipse.microprofile.config.inject.ConfigProperty;

import io.quarkus.oidc.client.OidcClient;
import io.quarkus.oidc.client.runtime.OidcClientConfig;
import io.quarkus.oidc.client.runtime.OidcClientConfig.Grant.Type;
import io.quarkus.oidc.client.OidcClients;
import io.quarkus.runtime.StartupEvent;
import io.smallrye.mutiny.Uni;
import jakarta.enterprise.context.ApplicationScoped;
import jakarta.enterprise.event.Observes;
import jakarta.inject.Inject;

@ApplicationScoped
public class OidcClientCreator {

    @Inject
    OidcClients oidcClients;
    @ConfigProperty(name = "quarkus.oidc.auth-server-url")
    String oidcProviderAddress;

    private volatile OidcClient oidcClient;

    public void startup(@Observes StartupEvent event) {
    	createOidcClient().subscribe().with(client -> {oidcClient = client;});
    }

    public OidcClient getOidcClient() {
        return oidcClient;
    }

    private Uni<OidcClient> createOidcClient() {
        OidcClientConfig cfg = OidcClientConfig
            .authServerUrl(oidcProviderAddress)
            .id("myclient")
            .clientId("backend-service")
            .credentials("secret")
            .grant(Type.PASSWORD)
            .grantOptions("password", Map.of("username", "alice", "password", "alice"))
            .build();
        return oidcClients.newClient(cfg);
    }
}
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Now, you can use this client like this: 

import org.eclipse.microprofile.rest.client.inject.RestClient;

import jakarta.inject.Inject;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;
import io.smallrye.mutiny.Uni;
import io.quarkus.oidc.client.runtime.TokensHelper;

@Path("/clients")
public class OidcClientResource {

    @Inject
    OidcClientCreator oidcClientCreator;
    TokensHelper tokenHelper = new TokensHelper();

    @Inject
    @RestClient
    RestClientWithTokenHeaderParam restClient;
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    @GET
    @Path("user-name")
    @Produces("text/plain")
    public Uni<String> getUserName() {
    	return tokenHelper.getTokens(oidcClientCreator.getOidcClient()).onItem()
        		.transformToUni(tokens -> restClient.getUserName("Bearer " + tokens.getAccessToken()));
    }
}
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See the RestClientWithTokenHeaderParam declaration in the Use OidcClient directly section.

1.1.6. Inject named OidcClient and tokens
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In case of multiple configured OidcClient objects, you can specify the OidcClient injection target by the extra qualifier @NamedOidcClient instead of working with OidcClients: 

package org.acme.security.openid.connect.client;

import org.eclipse.microprofile.rest.client.inject.RestClient;
import jakarta.inject.Inject;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;
import io.smallrye.mutiny.Uni;
import io.quarkus.oidc.client.NamedOidcClient;
import io.quarkus.oidc.client.OidcClient;
import io.quarkus.oidc.client.runtime.TokensHelper;

@Path("/clients")
public class OidcClientResource {

    @Inject
    @NamedOidcClient("jwt-secret")
    OidcClient client;

    TokensHelper tokenHelper = new TokensHelper();

    @Inject
    @RestClient
    RestClientWithTokenHeaderParam restClient;
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    @GET
    @Path("user-name")
    @Produces("text/plain")
    public Uni<String> getUserName() {
    	return tokenHelper.getTokens(client).onItem()
        		.transformToUni(tokens -> restClient.getUserName("Bearer " + tokens.getAccessToken()));
    }
}
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1
See the RestClientWithTokenHeaderParam declaration in the Use OidcClient directly section.

The same qualifier can be used to specify the OidcClient used for a Tokens injection: 

import java.io.IOException;

import jakarta.annotation.Priority;
import jakarta.enterprise.context.RequestScoped;
import jakarta.inject.Inject;
import jakarta.ws.rs.Priorities;
import jakarta.ws.rs.client.ClientRequestContext;
import jakarta.ws.rs.client.ClientRequestFilter;
import jakarta.ws.rs.core.HttpHeaders;
import jakarta.ws.rs.ext.Provider;

import io.quarkus.oidc.client.NamedOidcClient;
import io.quarkus.oidc.client.Tokens;

@Provider
@Priority(Priorities.AUTHENTICATION)
@RequestScoped
public class OidcClientRequestCustomFilter implements ClientRequestFilter {

    @Inject
    @NamedOidcClient("jwt-secret")
    Tokens tokens;

    @Override
    public void filter(ClientRequestContext requestContext) throws IOException {
        requestContext.getHeaders().add(HttpHeaders.AUTHORIZATION, "Bearer " + tokens.getAccessToken());
    }
}
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Add the following Maven Dependency: 

<dependency>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-rest-client-oidc-filter</artifactId>
</dependency>
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Note

It will also bring io.quarkus:quarkus-oidc-client.

quarkus-rest-client-oidc-filter extension provides io.quarkus.oidc.client.filter.OidcClientRequestReactiveFilter.

It works similarly to the way OidcClientRequestFilter does (see Use OidcClient in MicroProfile RestClient client filter) - it uses OidcClient to acquire the access token, refresh it if needed, and set it as an HTTP Authorization Bearer scheme value. The difference is that it works with Reactive RestClient and implements a non-blocking client filter that does not block the current IO thread when acquiring or refreshing the tokens.

OidcClientRequestReactiveFilter delays an initial token acquisition until it is executed to avoid blocking an IO thread.

You can selectively register OidcClientRequestReactiveFilter by using either io.quarkus.oidc.client.reactive.filter.OidcClientFilter or org.eclipse.microprofile.rest.client.annotation.RegisterProvider annotations: 

import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
import io.quarkus.oidc.client.filter.OidcClientFilter;
import io.smallrye.mutiny.Uni;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;

@RegisterRestClient
@OidcClientFilter
@Path("/")
public interface ProtectedResourceService {

    @GET
    Uni<String> getUserName();
}
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or 

import org.eclipse.microprofile.rest.client.annotation.RegisterProvider;
import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
import io.quarkus.oidc.client.reactive.filter.OidcClientRequestReactiveFilter;
import io.smallrye.mutiny.Uni;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;

@RegisterRestClient
@RegisterProvider(OidcClientRequestReactiveFilter.class)
@Path("/")
public interface ProtectedResourceService {

    @GET
    Uni<String> getUserName();
}
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OidcClientRequestReactiveFilter uses a default OidcClient by default. A named OidcClient can be selected with a quarkus.rest-client-oidc-filter.client-name configuration property. You can also select OidcClient by setting the value attribute of the @OidcClientFilter annotation. The client name set through annotation has higher priority than the quarkus.rest-client-oidc-filter.client-name configuration property. For example, given this jwt-secret named OIDC client declaration, you can refer to this client like this: 

import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
import io.quarkus.oidc.client.filter.OidcClientFilter;
import io.smallrye.mutiny.Uni;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;

@RegisterRestClient
@OidcClientFilter("jwt-secret")
@Path("/")
public interface ProtectedResourceService {

    @GET
    Uni<String> getUserName();
}
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If you also want to refresh the token every time the ProtectedResourceService#getUserName call results in a 401 Unauthorized error, use the quarkus.rest-client-oidc-filter.refresh-on-unauthorized configuration property like in the example below: 

quarkus.rest-client-oidc-filter.refresh-on-unauthorized=true
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Alternatively, if you only need to enable this feature for individual endpoints, create a custom filter like in the example below: 

package io.quarkus.it.keycloak;

import io.quarkus.oidc.client.reactive.filter.runtime.AbstractOidcClientRequestReactiveFilter;
import jakarta.annotation.Priority;
import jakarta.ws.rs.Priorities;

@Priority(Priorities.AUTHENTICATION)
public class OidcClientRequestCustomFilter extends AbstractOidcClientRequestReactiveFilter {

    @Override
    protected boolean refreshOnUnauthorized() {
        return true;
    }
}
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1.1.8. Use OidcClient in RestClient ClientFilter
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Add the following Maven Dependency: 

<dependency>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-resteasy-client-oidc-filter</artifactId>
</dependency>
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Note

It will also bring io.quarkus:quarkus-oidc-client.

quarkus-resteasy-client-oidc-filter extension provides io.quarkus.oidc.client.filter.OidcClientRequestFilter Jakarta REST ClientRequestFilter which uses OidcClient to acquire the access token, refresh it if needed, and set it as an HTTP Authorization Bearer scheme value.

By default, this filter will get OidcClient to acquire the first pair of access and refresh tokens at its initialization time. If the access tokens are short-lived and refresh tokens are unavailable, then the token acquisition should be delayed with quarkus.oidc-client.early-tokens-acquisition=false.

You can selectively register OidcClientRequestFilter by using either io.quarkus.oidc.client.filter.OidcClientFilter or org.eclipse.microprofile.rest.client.annotation.RegisterProvider annotations: 

import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
import io.quarkus.oidc.client.filter.OidcClientFilter;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;

@RegisterRestClient
@OidcClientFilter
@Path("/")
public interface ProtectedResourceService {

    @GET
    String getUserName();
}
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or 

import org.eclipse.microprofile.rest.client.annotation.RegisterProvider;
import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
import io.quarkus.oidc.client.filter.OidcClientRequestFilter;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;

@RegisterRestClient
@RegisterProvider(OidcClientRequestFilter.class)
@Path("/")
public interface ProtectedResourceService {

    @GET
    String getUserName();
}
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Alternatively, OidcClientRequestFilter can be registered automatically with all MP Rest or Jakarta REST clients if the quarkus.resteasy-client-oidc-filter.register-filter=true property is set.

OidcClientRequestFilter uses a default OidcClient by default. A named OidcClient can be selected with a quarkus.resteasy-client-oidc-filter.client-name configuration property. You can also select OidcClient by setting the value attribute of the @OidcClientFilter annotation. The client name set through annotation has higher priority than the quarkus.resteasy-client-oidc-filter.client-name configuration property. For example, given this jwt-secret named OIDC client declaration, you can refer to this client like this: 

import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
import io.quarkus.oidc.client.filter.OidcClientFilter;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;

@RegisterRestClient
@OidcClientFilter("jwt-secret")
@Path("/")
public interface ProtectedResourceService {

    @GET
    String getUserName();
}
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If you also want to refresh the token every time the ProtectedResourceService#getUserName call results in a 401 Unauthorized error, use the quarkus.resteasy-client-oidc-filter.refresh-on-unauthorized configuration property like in the example below: 

quarkus.resteasy-client-oidc-filter.refresh-on-unauthorized=true
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Alternatively, if you only need to enable this feature for individual endpoints, create a custom filter like in the example below: 

package io.quarkus.it.keycloak;

import io.quarkus.oidc.client.filter.runtime.AbstractOidcClientRequestFilter;
import jakarta.annotation.Priority;
import jakarta.ws.rs.Priorities;

@Priority(Priorities.AUTHENTICATION)
public class OidcClientRequestCustomFilter extends AbstractOidcClientRequestFilter {

    @Override
    protected boolean refreshOnUnauthorized() {
        return true;
    }
}
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1.1.9. Use a custom RestClient ClientFilter
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If you prefer, you can use your own custom filter and inject Tokens: 

import java.io.IOException;
import jakarta.annotation.Priority;
import jakarta.inject.Inject;
import jakarta.ws.rs.Priorities;
import jakarta.ws.rs.client.ClientRequestContext;
import jakarta.ws.rs.client.ClientRequestFilter;
import jakarta.ws.rs.core.HttpHeaders;
import jakarta.ws.rs.ext.Provider;
import io.quarkus.oidc.client.Tokens;

@Provider
@Priority(Priorities.AUTHENTICATION)
public class OidcClientRequestCustomFilter implements ClientRequestFilter {

    @Inject
    Tokens tokens;

    @Override
    public void filter(ClientRequestContext requestContext) throws IOException {
        requestContext.getHeaders().add(HttpHeaders.AUTHORIZATION, "Bearer " + tokens.getAccessToken());
    }
}
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The Tokens producer will acquire and refresh the tokens, and the custom filter will decide how and when to use the token.

You can also inject named Tokens, see Inject named OidcClient and Tokens

1.1.10. Refreshing access tokens
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OidcClientRequestReactiveFilter, OidcClientRequestFilter and Tokens producers will refresh the current expired access token if the refresh token is available. Additionally, the quarkus.oidc-client.refresh-token-time-skew property can be used for a preemptive access token refreshment to avoid sending nearly expired access tokens that might cause HTTP 401 errors. For example, if this property is set to 3S and the access token will expire in less than 3 seconds, then this token will be auto-refreshed.

By default, OIDC client refreshes the token during the current request, when it detects that it has expired, or nearly expired if the refresh token time skew is configured. Performance critical applications may want to avoid having to wait for a possible token refresh during the incoming requests and configure an asynchronous token refresh instead, for example: 

quarkus.oidc-client.refresh-interval=1m
1
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1
Check every minute if the current access token is expired and must be refreshed.

If the access token needs to be refreshed, but no refresh token is available, then an attempt is made to acquire a new token by using a configured grant, such as client_credentials.

Some OpenID Connect Providers will not return a refresh token in a client_credentials grant response. For example, starting from Keycloak 12, a refresh token will not be returned by default for client_credentials. The providers might also restrict the number of times a refresh token can be used.

1.1.11. Revoking access tokens
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If your OpenId Connect provider, such as Keycloak, supports a token revocation endpoint, then OidcClient#revokeAccessToken can be used to revoke the current access token. The revocation endpoint URL will be discovered alongside the token request URI or can be configured with quarkus.oidc-client.revoke-path.

You might want to have the access token revoked if using this token with a REST client fails with an HTTP 401 status code or if the access token has already been used for a long time and you would like to refresh it.

This can be achieved by requesting a token refresh by using a refresh token. However, if the refresh token is unavailable, you can refresh it by revoking it first and then requesting a new access token.

1.1.12. OidcClient authentication
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OidcClient has to authenticate to the OpenID Connect Provider for the client_credentials and other grant requests to succeed. All the OIDC Client Authentication options are supported, for example:

client_secret_basic: 

quarkus.oidc-client.auth-server-url=http://localhost:8180/auth/realms/quarkus/
quarkus.oidc-client.client-id=quarkus-app
quarkus.oidc-client.credentials.secret=mysecret
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or 

quarkus.oidc-client.auth-server-url=http://localhost:8180/auth/realms/quarkus/
quarkus.oidc-client.client-id=quarkus-app
quarkus.oidc-client.credentials.client-secret.value=mysecret
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Or with the secret retrieved from a CredentialsProvider: 

quarkus.oidc-client.auth-server-url=http://localhost:8180/auth/realms/quarkus/
quarkus.oidc-client.client-id=quarkus-app

# This key is used to retrieve a secret from the map of credentials returned from CredentialsProvider
quarkus.oidc-client.credentials.client-secret.provider.key=mysecret-key
# This is the keyring provided to the CredentialsProvider when looking up the secret, set only if required by the CredentialsProvider implementation
quarkus.oidc.credentials.client-secret.provider.keyring-name=oidc
# Set it only if more than one CredentialsProvider can be registered
quarkus.oidc-client.credentials.client-secret.provider.name=oidc-credentials-provider
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client_secret_post: 

quarkus.oidc-client.auth-server-url=http://localhost:8180/auth/realms/quarkus/
quarkus.oidc-client.client-id=quarkus-app
quarkus.oidc-client.credentials.client-secret.value=mysecret
quarkus.oidc-client.credentials.client-secret.method=post
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client_secret_jwt, signature algorithm is HS256: 

quarkus.oidc-client.auth-server-url=http://localhost:8180/auth/realms/quarkus/
quarkus.oidc-client.client-id=quarkus-app
quarkus.oidc-client.credentials.jwt.secret=AyM1SysPpbyDfgZld3umj1qzKObwVMkoqQ-EstJQLr_T-1qS0gZH75aKtMN3Yj0iPS4hcgUuTwjAzZr1Z9CAow
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Or with the secret retrieved from a CredentialsProvider, signature algorithm is HS256: 

quarkus.oidc-client.auth-server-url=http://localhost:8180/auth/realms/quarkus/
quarkus.oidc-client.client-id=quarkus-app

# This is a key that will be used to retrieve a secret from the map of credentials returned from CredentialsProvider
quarkus.oidc-client.credentials.jwt.secret-provider.key=mysecret-key
# This is the keyring provided to the CredentialsProvider when looking up the secret, set only if required by the CredentialsProvider implementation
quarkus.oidc.credentials.client-secret.provider.keyring-name=oidc
# Set it only if more than one CredentialsProvider can be registered
quarkus.oidc-client.credentials.jwt.secret-provider.name=oidc-credentials-provider
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private_key_jwt with the PEM key inlined in application.properties, and where the signature algorithm is RS256: 

quarkus.oidc-client.auth-server-url=http://localhost:8180/auth/realms/quarkus/
quarkus.oidc-client.client-id=quarkus-app
quarkus.oidc-client.credentials.jwt.key=Base64-encoded private key representation
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private_key_jwt with the PEM key file, signature algorithm is RS256: 

quarkus.oidc-client.auth-server-url=http://localhost:8180/auth/realms/quarkus/
quarkus.oidc-client.client-id=quarkus-app
quarkus.oidc-client.credentials.jwt.key-file=privateKey.pem
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private_key_jwt with the keystore file, signature algorithm is RS256: 

quarkus.oidc-client.auth-server-url=http://localhost:8180/auth/realms/quarkus/
quarkus.oidc-client.client-id=quarkus-app
quarkus.oidc-client.credentials.jwt.key-store-file=keystore.pkcs12
quarkus.oidc-client.credentials.jwt.key-store-password=mypassword
quarkus.oidc-client.credentials.jwt.key-password=mykeypassword

# Private key alias inside the keystore
quarkus.oidc-client.credentials.jwt.key-id=mykeyAlias
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Using client_secret_jwt or private_key_jwt authentication methods ensures that no client secret goes over the wire.

1.1.12.1. Additional JWT authentication options
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If either client_secret_jwt or private_key_jwt authentication methods are used, then the JWT signature algorithm, key identifier, audience, subject, and issuer can be customized, for example: 

# private_key_jwt client authentication

quarkus.oidc-client.auth-server-url=http://localhost:8180/auth/realms/quarkus/
quarkus.oidc-client.client-id=quarkus-app
quarkus.oidc-client.credentials.jwt.key-file=privateKey.pem

# This is a token key identifier 'kid' header - set it if your OpenID Connect provider requires it.
# Note that if the key is represented in a JSON Web Key (JWK) format with a `kid` property, then
# using 'quarkus.oidc-client.credentials.jwt.token-key-id' is unnecessary.
quarkus.oidc-client.credentials.jwt.token-key-id=mykey

# Use the RS512 signature algorithm instead of the default RS256
quarkus.oidc-client.credentials.jwt.signature-algorithm=RS512

# The token endpoint URL is the default audience value; use the base address URL instead:
quarkus.oidc-client.credentials.jwt.audience=${quarkus.oidc-client.auth-server-url}

# custom subject instead of the client ID:
quarkus.oidc-client.credentials.jwt.subject=custom-subject

# custom issuer instead of the client ID:
quarkus.oidc-client.credentials.jwt.issuer=custom-issuer
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1.1.12.2. JWT Bearer
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RFC7523 explains how JWT Bearer tokens can be used to authenticate clients, see the Using JWTs for Client Authentication section for more information.

It can be enabled as follows: 

quarkus.oidc-client.auth-server-url=${auth-server-url}
quarkus.oidc-client.client-id=quarkus-app
quarkus.oidc-client.credentials.jwt.source=bearer
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Next, the JWT bearer token must be provided as a client_assertion parameter to the OIDC client.

Quarkus can load the JWT bearer token from a file system. For example, in Kubernetes, a service account token projection can be mounted to a /var/run/secrets/tokens path. Then all you need to do is configure a JWT bearer token path as follows: 

quarkus.oidc-client.credentials.jwt.token-path=/var/run/secrets/tokens
1
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1
Path to a JWT bearer token. Quarkus loads a new token from a filesystem and reload it when the token has expired.

Your other option is to use OidcClient methods for acquiring or refreshing tokens which accept additional grant parameters, for example, oidcClient.getTokens(Map.of("client_assertion", "ey…​")).

If you work work with the OIDC client filters then you must register a custom filter which will provide this assertion.

Here is an example of the Quarkus REST (formerly RESTEasy Reactive) custom filter: 

package io.quarkus.it.keycloak;

import java.util.Map;

import io.quarkus.oidc.client.reactive.filter.runtime.AbstractOidcClientRequestReactiveFilter;
import io.quarkus.oidc.common.runtime.OidcConstants;
import jakarta.annotation.Priority;
import jakarta.ws.rs.Priorities;

@Priority(Priorities.AUTHENTICATION)
public class OidcClientRequestCustomFilter extends AbstractOidcClientRequestReactiveFilter {

    @Override
    protected Map<String, String> additionalParameters() {
        return Map.of(OidcConstants.CLIENT_ASSERTION, "ey...");
    }
}
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Here is an example of the RESTEasy Classic custom filter: 

package io.quarkus.it.keycloak;

import java.util.Map;

import io.quarkus.oidc.client.filter.runtime.AbstractOidcClientRequestFilter;
import io.quarkus.oidc.common.runtime.OidcConstants;
import jakarta.annotation.Priority;
import jakarta.ws.rs.Priorities;

@Priority(Priorities.AUTHENTICATION)
public class OidcClientRequestCustomFilter extends AbstractOidcClientRequestFilter {

    @Override
    protected Map<String, String> additionalParameters() {
        return Map.of(OidcConstants.CLIENT_ASSERTION, "ey...");
    }
}
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1.1.12.3. Apple POST JWT
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Apple OpenID Connect Provider uses a client_secret_post method where a secret is a JWT produced with a private_key_jwt authentication method but with Apple account-specific issuer and subject properties.

quarkus-oidc-client supports a non-standard client_secret_post_jwt authentication method, which can be configured as follows: 

quarkus.oidc-client.auth-server-url=${apple.url}
quarkus.oidc-client.client-id=${apple.client-id}
quarkus.oidc-client.credentials.client-secret.method=post-jwt

quarkus.oidc-client.credentials.jwt.key-file=ecPrivateKey.pem
quarkus.oidc-client.credentials.jwt.signature-algorithm=ES256
quarkus.oidc-client.credentials.jwt.subject=${apple.subject}
quarkus.oidc-client.credentials.jwt.issuer=${apple.issuer}
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1.1.12.4. Mutual TLS
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Some OpenID Connect Providers require that a client is authenticated as part of the mutual TLS (mTLS) authentication process.

quarkus-oidc-client can be configured as follows to support mTLS: 

quarkus.oidc-client.tls.tls-configuration-name=oidc-client

# configure hostname verification if necessary
#quarkus.tls.oidc-client.hostname-verification-algorithm=NONE

# Keystore configuration
quarkus.tls.oidc-client.key-store.p12.path=client-keystore.p12
quarkus.tls.oidc-client.key-store.p12.password=${key-store-password}

# Add more keystore properties if needed:
#quarkus.tls.oidc-client.key-store.p12.alias=keyAlias
#quarkus.tls.oidc-client.key-store.p12.alias-password=keyAliasPassword

# Truststore configuration
quarkus.tls.oidc-client.trust-store.p12.path=client-truststore.p12
quarkus.tls.oidc-client.trust-store.p12.password=${trust-store-password}
# Add more truststore properties if needed:
#quarkus.tls.oidc-client.trust-store.p12.alias=certAlias
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1.1.13. OIDC Client SPI
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When your custom extension must acquire OIDC tokens using one of the OIDC token grants supported by OIDC client, this extension can depend on the OIDC Client SPI only and let OIDC client itself acquire and refresh access tokens as necessary.

Add the following dependency: 

<dependency>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-oidc-client-spi</artifactId>
</dependency>
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Next update your extension to use io.quarkus.oidc.client.spi.TokenProvider CDI bean as required, for example: 

package org.acme.extension;

import jakarta.inject.Inject;
import io.quarkus.oidc.client.spi.TokenProvider;

public class ExtensionOAuth2Support {

   @Inject
   TokenProvider tokenProvider;

   public Uni<String> getAccessToken() {
       return tokenProvider.getAccessToken();
   }
}
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Currently, io.quarkus.oidc.client.spi.TokenProvider is only available for default OIDC clients, since custom extensions are unlikely to be aware of multiple named OIDC clients.

1.1.14. Testing
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Start by adding the following dependencies to your test project: 

<dependency>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-junit5</artifactId>
    <scope>test</scope>
</dependency>
<dependency>
    <groupId>org.awaitility</groupId>
    <artifactId>awaitility</artifactId>
    <scope>test</scope>
</dependency>
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1.1.14.1. Wiremock
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Add the following dependencies to your test project: 

<dependency>
    <groupId>org.wiremock</groupId>
    <artifactId>wiremock</artifactId>
    <scope>test</scope>
    <version>${wiremock.version}</version>
1 

</dependency>
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1
Use a proper Wiremock version. View all available WireMock versions on Maven Central.

Write a Wiremock-based QuarkusTestResourceLifecycleManager, for example: 

package io.quarkus.it.keycloak;

import static com.github.tomakehurst.wiremock.client.WireMock.matching;
import static com.github.tomakehurst.wiremock.core.WireMockConfiguration.wireMockConfig;

import java.util.HashMap;
import java.util.Map;

import com.github.tomakehurst.wiremock.WireMockServer;
import com.github.tomakehurst.wiremock.client.WireMock;
import com.github.tomakehurst.wiremock.core.Options.ChunkedEncodingPolicy;

import io.quarkus.test.common.QuarkusTestResourceLifecycleManager;

public class KeycloakRealmResourceManager implements QuarkusTestResourceLifecycleManager {
    private WireMockServer server;

    @Override
    public Map<String, String> start() {

        server = new WireMockServer(wireMockConfig().dynamicPort().useChunkedTransferEncoding(ChunkedEncodingPolicy.NEVER));
        server.start();

        server.stubFor(WireMock.post("/tokens")
                .withRequestBody(matching("grant_type=password&username=alice&password=alice"))
                .willReturn(WireMock
                        .aResponse()
                        .withHeader("Content-Type", "application/json")
                        .withBody(
                                "{\"access_token\":\"access_token_1\", \"expires_in\":4, \"refresh_token\":\"refresh_token_1\"}")));
        server.stubFor(WireMock.post("/tokens")
                .withRequestBody(matching("grant_type=refresh_token&refresh_token=refresh_token_1"))
                .willReturn(WireMock
                        .aResponse()
                        .withHeader("Content-Type", "application/json")
                        .withBody(
                                "{\"access_token\":\"access_token_2\", \"expires_in\":4, \"refresh_token\":\"refresh_token_1\"}")));


        Map<String, String> conf = new HashMap<>();
        conf.put("keycloak.url", server.baseUrl());
        return conf;
    }

    @Override
    public synchronized void stop() {
        if (server != null) {
            server.stop();
            server = null;
        }
    }
}
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Prepare the REST test endpoints. You can have the test front-end endpoint, which uses the injected MP REST client with a registered OidcClient filter, call the downstream endpoint. This endpoint echoes the token back. For example, see the integration-tests/oidc-client-wiremock in the main Quarkus repository.

Set application.properties, for example: 

# Use the 'keycloak.url' property set by the test KeycloakRealmResourceManager
quarkus.oidc-client.auth-server-url=${keycloak.url:replaced-by-test-resource}
quarkus.oidc-client.discovery-enabled=false
quarkus.oidc-client.token-path=/tokens
quarkus.oidc-client.client-id=quarkus-service-app
quarkus.oidc-client.credentials.secret=secret
quarkus.oidc-client.grant.type=password
quarkus.oidc-client.grant-options.password.username=alice
quarkus.oidc-client.grant-options.password.password=alice
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And finally, write the test code. Given the Wiremock-based resource above, the first test invocation should return the access_token_1 access token, which will expire in 4 seconds. Use awaitility to wait for about 5 seconds, and now the next test invocation should return the access_token_2 access token, which confirms the expired access_token_1 access token has been refreshed.

1.1.14.2. Keycloak
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If you work with Keycloak, you can use the same approach described in the OpenID Connect Bearer Token Integration testing Keycloak section.

1.1.15. How to check the errors in the logs
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Enable io.quarkus.oidc.client.runtime.OidcClientImpl TRACE level logging to see more details about the token acquisition and refresh errors: 

quarkus.log.category."io.quarkus.oidc.client.runtime.OidcClientImpl".level=TRACE
quarkus.log.category."io.quarkus.oidc.client.runtime.OidcClientImpl".min-level=TRACE
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Enable io.quarkus.oidc.client.runtime.OidcClientRecorder TRACE level logging to see more details about the OidcClient initialization errors: 

quarkus.log.category."io.quarkus.oidc.client.runtime.OidcClientRecorder".level=TRACE
quarkus.log.category."io.quarkus.oidc.client.runtime.OidcClientRecorder".min-level=TRACE
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1.2. OIDC request filters
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You can filter OIDC requests made by OIDC client to the OIDC provider by registering one or more OidcRequestFilter implementations, which can update or add new request headers, customize or analyze the request body.

You can have a single filter intercepting requests to all OIDC provider endpoints, or use an @OidcEndpoint annotation to apply this filter to requests to specific endpoints only. For example: 

package io.quarkus.it.keycloak;

import jakarta.enterprise.context.ApplicationScoped;

import io.quarkus.arc.Unremovable;
import io.quarkus.oidc.common.OidcEndpoint;
import io.quarkus.oidc.common.OidcRequestFilter;
import io.vertx.core.http.HttpMethod;

@ApplicationScoped
@OidcEndpoint(value = Type.TOKEN)
@Unremovable
public class OidcRequestCustomizer implements OidcRequestFilter {

    @Override
    public void filter(OidcRequestContext requestContext) {
        HttpMethod method = requestContext.request().method();
        String uri = requestContext.request().uri();
        if (method == HttpMethod.POST && uri.endsWith("/token") && requestContext.requestBody() != null) {
            requestContext.request().putHeader("Digest", calculateDigest(requestContext.requestBody().toString()));
        }
    }

    private String calculateDigest(String bodyString) {
        // Apply the required digest algorithm to the body string
    }
}
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OidcRequestContextProperties can be used to access request properties. Currently, you can use a client_id key to access the client tenant id and a grant_type key to access the grant type which the OIDC client uses to acquire tokens.

OidcRequestFilter can customize a request body by preparing an instance of io.vertx.mutiny.core.buffer.Buffer and setting it on a request context, for example: 

package io.quarkus.it.keycloak;

import jakarta.enterprise.context.ApplicationScoped;

import io.quarkus.arc.Unremovable;
import io.quarkus.oidc.common.OidcEndpoint;
import io.quarkus.oidc.common.OidcEndpoint.Type;
import io.quarkus.oidc.common.OidcRequestContextProperties;
import io.quarkus.oidc.common.OidcRequestFilter;
import io.vertx.mutiny.core.buffer.Buffer;

@ApplicationScoped
@Unremovable
@OidcEndpoint(value = Type.TOKEN)
public class TokenRequestFilter implements OidcRequestFilter {

    @Override
    public void filter(OidcRequestContext rc) {
        // Add more required properties to the token request
        rc.requestBody(rc.requestBody().toString() + "&opaque_token_param=opaque_token_value"));
    }
}
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1.3. OIDC response filters
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You can filter responses to the OIDC client requests by registering one or more OidcResponseFilter implementations, which can check the response status, headers and body, in order to log them or perform other actions.

You can have a single filter intercepting responses to all OIDC client requests, or use an @OidcEndpoint annotation to apply this filter to the responses to the specific OIDC client requests only. For example: 

package io.quarkus.it.keycloak;

import jakarta.enterprise.context.ApplicationScoped;

import org.jboss.logging.Logger;

import io.quarkus.arc.Unremovable;
import io.quarkus.oidc.common.OidcEndpoint;
import io.quarkus.oidc.common.OidcEndpoint.Type;
import io.quarkus.oidc.common.OidcResponseFilter;
import io.quarkus.oidc.common.runtime.OidcConstants;

@ApplicationScoped
@Unremovable
@OidcEndpoint(value = Type.TOKEN)
1 

public class TokenEndpointResponseFilter implements OidcResponseFilter {
    private static final Logger LOG = Logger.getLogger(TokenEndpointResponseFilter.class);

    @Override
    public void filter(OidcResponseContext rc) {
        String contentType = rc.responseHeaders().get("Content-Type");
2 

        if (contentType.equals("application/json")
                && "refresh_token".equals(rc.requestProperties().get(OidcConstants.GRANT_TYPE))
3 

                && rc.responseBody().toJsonObject().containsKey("refresh_token")) {
4 

            LOG.debug("Tokens have been refreshed");
        }
    }

}
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1
Restrict this filter to requests targeting the OIDC token endpoint only.
2
Check the response Content-Type header.
3
Use OidcRequestContextProperties request properties to confirm it is a refresh_grant token grant response.
4
Confirm the response JSON contains a refresh_token property.

OidcResponseFilter can customize a response body by preparing an instance of io.vertx.mutiny.core.buffer.Buffer and setting it as a property on a response context, for example: 

package io.quarkus.it.keycloak;

import jakarta.enterprise.context.ApplicationScoped;

import io.quarkus.arc.Unremovable;
import io.quarkus.oidc.common.OidcEndpoint;
import io.quarkus.oidc.common.OidcEndpoint.Type;
import io.quarkus.oidc.common.OidcRequestContextProperties;
import io.quarkus.oidc.common.OidcResponseFilter;
import io.vertx.core.json.JsonObject;
import io.vertx.mutiny.core.buffer.Buffer;

@ApplicationScoped
@Unremovable
@OidcEndpoint(value = Type.TOKEN)
public class TokenResponseFilter implements OidcResponseFilter {

    @Override
    public void filter(OidcResponseContext rc) {
        JsonObject body = rc.responseBody().toJsonObject();
        // JSON `scope` property has multiple values separated by a comma character.
        // It must be replaced with a space character.
        String scope = body.getString("scope");
        body.put("scope", scope.replace(",", " "));
        rc.responseBody(Buffer.buffer(body.toString()));
    }
}
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1.4. Token Propagation for Quarkus REST
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The quarkus-rest-client-oidc-token-propagation extension provides a REST Client filter, io.quarkus.oidc.token.propagation.reactive.AccessTokenRequestReactiveFilter, that simplifies the propagation of authentication information. This client propagates the bearer token present in the currently active request or the token acquired from the authorization code flow mechanism as the HTTP Authorization header’s Bearer scheme value.

You can selectively register AccessTokenRequestReactiveFilter by using either io.quarkus.oidc.token.propagation.common.AccessToken or org.eclipse.microprofile.rest.client.annotation.RegisterProvider annotation, for example: 

import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
import io.quarkus.oidc.token.propagation.common.AccessToken;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;

@RegisterRestClient
@AccessToken
@Path("/")
public interface ProtectedResourceService {

    @GET
    String getUserName();
}
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or 

import org.eclipse.microprofile.rest.client.annotation.RegisterProvider;
import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
import io.quarkus.oidc.token.propagation.reactive.AccessTokenRequestReactiveFilter;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;

@RegisterRestClient
@RegisterProvider(AccessTokenRequestReactiveFilter.class)
@Path("/")
public interface ProtectedResourceService {

    @GET
    String getUserName();
}
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Additionally, AccessTokenRequestReactiveFilter can support a complex application that needs to exchange the tokens before propagating them.

If you work with Keycloak or another OIDC provider that supports a Token Exchange token grant, then you can configure AccessTokenRequestReactiveFilter to exchange the token like this: 

quarkus.oidc-client.auth-server-url=http://localhost:8180/auth/realms/quarkus
quarkus.oidc-client.client-id=quarkus-app
quarkus.oidc-client.credentials.secret=secret
quarkus.oidc-client.grant.type=exchange
quarkus.oidc-client.grant-options.exchange.audience=quarkus-app-exchange

quarkus.rest-client-oidc-token-propagation.exchange-token=true
1
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1
Please note that the exchange-token configuration property is ignored when the OidcClient name is set with the io.quarkus.oidc.token.propagation.common.AccessToken#exchangeTokenClient annotation attribute.
Note

AccessTokenRequestReactiveFilter will use OidcClient to exchange the current token, and you can use quarkus.oidc-client.grant-options.exchange to set the additional exchange properties expected by your OpenID Connect Provider.

If you work with providers such as Azure that require using JWT bearer token grant to exchange the current token, then you can configure AccessTokenRequestReactiveFilter to exchange the token like this: 

quarkus.oidc-client.auth-server-url=${azure.provider.url}
quarkus.oidc-client.client-id=quarkus-app
quarkus.oidc-client.credentials.secret=secret

quarkus.oidc-client.grant.type=jwt
quarkus.oidc-client.grant-options.jwt.requested_token_use=on_behalf_of
quarkus.oidc-client.scopes=https://graph.microsoft.com/user.read,offline_access

quarkus.resteasy-client-oidc-token-propagation.exchange-token=true
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AccessTokenRequestReactiveFilter uses a default OidcClient by default. A named OidcClient can be selected with a quarkus.rest-client-oidc-token-propagation.client-name configuration property or with the io.quarkus.oidc.token.propagation.common.AccessToken#exchangeTokenClient annotation attribute.

1.5. Token Propagation for RESTEasy Classic
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The quarkus-resteasy-client-oidc-token-propagation extension provides two Jakarta REST jakarta.ws.rs.client.ClientRequestFilter class implementations that simplify the propagation of authentication information. io.quarkus.oidc.token.propagation.AccessTokenRequestFilter propagates the Bearer token present in the current active request or the token acquired from the Authorization code flow mechanism, as the HTTP Authorization header’s Bearer scheme value. The io.quarkus.oidc.token.propagation.JsonWebTokenRequestFilter provides the same functionality but, in addition, provides support for JWT tokens.

When you need to propagate the current Authorization Code Flow access token, then the immediate token propagation will work well - as the code flow access tokens (as opposed to ID tokens) are meant to be propagated for the current Quarkus endpoint to access the remote services on behalf of the currently authenticated user.

However, the direct end-to-end Bearer token propagation should be avoided. For example, Client → Service A → Service B where Service B receives a token sent by Client to Service A. In such cases, Service B cannot distinguish if the token came from Service A or from Client directly. For Service B to verify the token came from Service A, it should be able to assert a new issuer and audience claims.

Additionally, a complex application might need to exchange or update the tokens before propagating them. For example, the access context might be different when Service A is accessing Service B. In this case, Service A might be granted a narrow or completely different set of scopes to access Service B.

The following sections show how AccessTokenRequestFilter and JsonWebTokenRequestFilter can help.

1.5.1. RestClient AccessTokenRequestFilter
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AccessTokenRequestFilter treats all tokens as Strings, and as such, it can work with both JWT and opaque tokens.

You can selectively register AccessTokenRequestFilter by using either io.quarkus.oidc.token.propagation.common.AccessToken or org.eclipse.microprofile.rest.client.annotation.RegisterProvider, for example: 

import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
import io.quarkus.oidc.token.propagation.common.AccessToken;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;

@RegisterRestClient
@AccessToken
@Path("/")
public interface ProtectedResourceService {

    @GET
    String getUserName();
}
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or 

import org.eclipse.microprofile.rest.client.annotation.RegisterProvider;
import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
import io.quarkus.oidc.token.propagation.AccessTokenRequestFilter;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;

@RegisterRestClient
@RegisterProvider(AccessTokenRequestFilter.class)
@Path("/")
public interface ProtectedResourceService {

    @GET
    String getUserName();
}
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Alternatively, AccessTokenRequestFilter can be registered automatically with all MP Rest or Jakarta REST clients if the quarkus.resteasy-client-oidc-token-propagation.register-filter property is set to true and quarkus.resteasy-client-oidc-token-propagation.json-web-token property is set to false (which is a default value).

1.5.1.1. Exchange token before propagation
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If the current access token needs to be exchanged before propagation and you work with Keycloak or other OpenID Connect Provider which supports a Token Exchange token grant, then you can configure AccessTokenRequestFilter like this: 

quarkus.oidc-client.auth-server-url=http://localhost:8180/auth/realms/quarkus
quarkus.oidc-client.client-id=quarkus-app
quarkus.oidc-client.credentials.secret=secret
quarkus.oidc-client.grant.type=exchange
quarkus.oidc-client.grant-options.exchange.audience=quarkus-app-exchange

quarkus.resteasy-client-oidc-token-propagation.exchange-token=true
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If you work with providers such as Azure that require using JWT bearer token grant to exchange the current token, then you can configure AccessTokenRequestFilter to exchange the token like this: 

quarkus.oidc-client.auth-server-url=${azure.provider.url}
quarkus.oidc-client.client-id=quarkus-app
quarkus.oidc-client.credentials.secret=secret

quarkus.oidc-client.grant.type=jwt
quarkus.oidc-client.grant-options.jwt.requested_token_use=on_behalf_of
quarkus.oidc-client.scopes=https://graph.microsoft.com/user.read,offline_access

quarkus.resteasy-client-oidc-token-propagation.exchange-token=true
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Note

AccessTokenRequestFilter will use OidcClient to exchange the current token, and you can use quarkus.oidc-client.grant-options.exchange to set the additional exchange properties expected by your OpenID Connect Provider.

AccessTokenRequestFilter uses a default OidcClient by default. A named OidcClient can be selected with a quarkus.resteasy-client-oidc-token-propagation.client-name configuration property.

1.5.2. RestClient JsonWebTokenRequestFilter
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Using JsonWebTokenRequestFilter is recommended if you work with Bearer JWT tokens where these tokens can have their claims, such as issuer and audience modified and the updated tokens secured (for example, re-signed) again. It expects an injected org.eclipse.microprofile.jwt.JsonWebToken and, therefore, will not work with the opaque tokens. Also, if your OpenID Connect Provider supports a Token Exchange protocol, then it is recommended to use AccessTokenRequestFilter instead - as both JWT and opaque bearer tokens can be securely exchanged with AccessTokenRequestFilter.

JsonWebTokenRequestFilter makes it easy for Service A implementations to update the injected org.eclipse.microprofile.jwt.JsonWebToken with the new issuer and audience claim values and secure the updated token again with a new signature. The only difficult step is ensuring that Service A has a signing key which should be provisioned from a secure file system or remote secure storage such as Vault.

You can selectively register JsonWebTokenRequestFilter by using either io.quarkus.oidc.token.propagation.JsonWebToken or org.eclipse.microprofile.rest.client.annotation.RegisterProvider, for example: 

import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
import io.quarkus.oidc.token.propagation.JsonWebToken;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;

@RegisterRestClient
@JsonWebToken
@Path("/")
public interface ProtectedResourceService {

    @GET
    String getUserName();
}
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or 

import org.eclipse.microprofile.rest.client.annotation.RegisterProvider;
import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
import io.quarkus.oidc.token.propagation.JsonWebTokenRequestFilter;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;

@RegisterRestClient
@RegisterProvider(JsonWebTokenRequestFilter.class)
@Path("/")
public interface ProtectedResourceService {

    @GET
    String getUserName();
}
Copy to Clipboard Toggle word wrap

Alternatively, JsonWebTokenRequestFilter can be registered automatically with all MicroProfile REST or Jakarta REST clients if both quarkus.resteasy-client-oidc-token-propagation.register-filter and quarkus.resteasy-client-oidc-token-propagation.json-web-token properties are set to true.

1.5.2.1. Update token before propagation
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If the injected token needs to have its iss (issuer) or aud (audience) claims updated and secured again with a new signature, then you can configure JsonWebTokenRequestFilter like this: 

quarkus.resteasy-client-oidc-token-propagation.secure-json-web-token=true
smallrye.jwt.sign.key.location=/privateKey.pem
# Set a new issuer
smallrye.jwt.new-token.issuer=http://frontend-resource
# Set a new audience
smallrye.jwt.new-token.audience=http://downstream-resource
# Override the existing token issuer and audience claims if they are already set
smallrye.jwt.new-token.override-matching-claims=true
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As mentioned, use AccessTokenRequestFilter if you work with Keycloak or an OpenID Connect Provider that supports a Token Exchange protocol.

1.5.3. Testing
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Typically, you must prepare two REST test endpoints. The first endpoint uses the injected MP REST client with a registered token propagation filter to call the second endpoint.

To learn how it can be done, please follow the OpenID Connect client and token propagation quickstart, and its Testing section in particular.

1.6. Configuration reference
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1.6.1. OIDC client
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🔒 Fixed at build time: Configuration property fixed at build time - All other configuration properties are overridable at runtime

Expand

Configuration property

Type

Default

🔒 Fixed at build time quarkus.oidc-client.enabled

If the OIDC client extension is enabled.

Environment variable: QUARKUS_OIDC_CLIENT_ENABLED

boolean

true

quarkus.oidc-client.auth-server-url

quarkus.oidc-client."id".auth-server-url

The base URL of the OpenID Connect (OIDC) server, for example, https://host:port/auth. Do not set this property if you use 'quarkus-oidc' and the public key verification (public-key) or certificate chain verification only (certificate-chain) is required. The OIDC discovery endpoint is called by default by appending a .well-known/openid-configuration path to this URL. For Keycloak, use https://host:port/realms/{realm}, replacing {realm} with the Keycloak realm name.

Environment variable: QUARKUS_OIDC_CLIENT_AUTH_SERVER_URL

string

 

quarkus.oidc-client.discovery-enabled

quarkus.oidc-client."id".discovery-enabled

Discovery of the OIDC endpoints. If not enabled, you must configure the OIDC endpoint URLs individually.

Environment variable: QUARKUS_OIDC_CLIENT_DISCOVERY_ENABLED

boolean

true

quarkus.oidc-client.registration-path

quarkus.oidc-client."id".registration-path

The relative path or absolute URL of the OIDC dynamic client registration endpoint. Set if discovery-enabled is false or a discovered token endpoint path must be customized.

Environment variable: QUARKUS_OIDC_CLIENT_REGISTRATION_PATH

string

 

quarkus.oidc-client.connection-delay

quarkus.oidc-client."id".connection-delay

The duration to attempt the initial connection to an OIDC server. For example, setting the duration to 20S allows 10 retries, each 2 seconds apart. This property is only effective when the initial OIDC connection is created. For dropped connections, use the connection-retry-count property instead.

Environment variable: QUARKUS_OIDC_CLIENT_CONNECTION_DELAY

Duration ℹ️ Duration format

 

quarkus.oidc-client.connection-retry-count

quarkus.oidc-client."id".connection-retry-count

The number of times to retry re-establishing an existing OIDC connection if it is temporarily lost. Different from connection-delay, which applies only to initial connection attempts. For instance, if a request to the OIDC token endpoint fails due to a connection issue, it will be retried as per this setting.

Environment variable: QUARKUS_OIDC_CLIENT_CONNECTION_RETRY_COUNT

int

3

quarkus.oidc-client.connection-timeout

quarkus.oidc-client."id".connection-timeout

The number of seconds after which the current OIDC connection request times out.

Environment variable: QUARKUS_OIDC_CLIENT_CONNECTION_TIMEOUT

Duration ℹ️ Duration format

10S

quarkus.oidc-client.use-blocking-dns-lookup

quarkus.oidc-client."id".use-blocking-dns-lookup

Whether DNS lookup should be performed on the worker thread. Use this option when you can see logged warnings about blocked Vert.x event loop by HTTP requests to OIDC server.

Environment variable: QUARKUS_OIDC_CLIENT_USE_BLOCKING_DNS_LOOKUP

boolean

false

quarkus.oidc-client.max-pool-size

quarkus.oidc-client."id".max-pool-size

The maximum size of the connection pool used by the WebClient.

Environment variable: QUARKUS_OIDC_CLIENT_MAX_POOL_SIZE

int

 

quarkus.oidc-client.follow-redirects

quarkus.oidc-client."id".follow-redirects

Follow redirects automatically when WebClient gets HTTP 302. When this property is disabled only a single redirect to exactly the same original URI is allowed but only if one or more cookies were set during the redirect request.

Environment variable: QUARKUS_OIDC_CLIENT_FOLLOW_REDIRECTS

boolean

true

quarkus.oidc-client.token-path

quarkus.oidc-client."id".token-path

The OIDC token endpoint that issues access and refresh tokens; specified as a relative path or absolute URL. Set if discovery-enabled is false or a discovered token endpoint path must be customized.

Environment variable: QUARKUS_OIDC_CLIENT_TOKEN_PATH

string

 

quarkus.oidc-client.revoke-path

quarkus.oidc-client."id".revoke-path

The relative path or absolute URL of the OIDC token revocation endpoint.

Environment variable: QUARKUS_OIDC_CLIENT_REVOKE_PATH

string

 

quarkus.oidc-client.client-id

quarkus.oidc-client."id".client-id

The client id of the application. Each application has a client id that is used to identify the application. Setting the client id is not required if application-type is service and no token introspection is required.

Environment variable: QUARKUS_OIDC_CLIENT_CLIENT_ID

string

 

quarkus.oidc-client.client-name

quarkus.oidc-client."id".client-name

The client name of the application. It is meant to represent a human readable description of the application which you may provide when an application (client) is registered in an OpenId Connect provider’s dashboard. For example, you can set this property to have more informative log messages which record an activity of the given client.

Environment variable: QUARKUS_OIDC_CLIENT_CLIENT_NAME

string

 

quarkus.oidc-client.id

quarkus.oidc-client."id".id

A unique OIDC client identifier. It must be set when OIDC clients are created dynamically and is optional in all other cases.

Environment variable: QUARKUS_OIDC_CLIENT_ID

string

 

quarkus.oidc-client.client-enabled

quarkus.oidc-client."id".client-enabled

If this client configuration is enabled.

Environment variable: QUARKUS_OIDC_CLIENT_CLIENT_ENABLED

boolean

true

quarkus.oidc-client.scopes

quarkus.oidc-client."id".scopes

List of access token scopes

Environment variable: QUARKUS_OIDC_CLIENT_SCOPES

list of string

 

quarkus.oidc-client.audience

quarkus.oidc-client."id".audience

List of access token audiences

Environment variable: QUARKUS_OIDC_CLIENT_AUDIENCE

list of string

 

quarkus.oidc-client.refresh-token-time-skew

quarkus.oidc-client."id".refresh-token-time-skew

Refresh token time skew. If this property is enabled then the configured duration is converted to seconds and is added to the current time when checking whether the access token should be refreshed. If the sum is greater than this access token’s expiration time then a refresh is going to happen.

Environment variable: QUARKUS_OIDC_CLIENT_REFRESH_TOKEN_TIME_SKEW

Duration ℹ️ Duration format

 

quarkus.oidc-client.access-token-expires-in

quarkus.oidc-client."id".access-token-expires-in

Access token expiration period relative to the current time. This property is only checked when an access token grant response does not include an access token expiration property.

Environment variable: QUARKUS_OIDC_CLIENT_ACCESS_TOKEN_EXPIRES_IN

Duration ℹ️ Duration format

 

quarkus.oidc-client.access-token-expiry-skew

quarkus.oidc-client."id".access-token-expiry-skew

Access token expiry time skew that can be added to the calculated token expiry time.

Environment variable: QUARKUS_OIDC_CLIENT_ACCESS_TOKEN_EXPIRY_SKEW

Duration ℹ️ Duration format

 

quarkus.oidc-client.absolute-expires-in

quarkus.oidc-client."id".absolute-expires-in

If the access token 'expires_in' property should be checked as an absolute time value as opposed to a duration relative to the current time.

Environment variable: QUARKUS_OIDC_CLIENT_ABSOLUTE_EXPIRES_IN

boolean

false

quarkus.oidc-client.grant.type

quarkus.oidc-client."id".grant.type

Grant type

Environment variable: QUARKUS_OIDC_CLIENT_GRANT_TYPE

client: 'client_credentials' grant requiring an OIDC client authentication only

password: 'password' grant requiring both OIDC client and user ('username' and 'password') authentications

code: 'authorization_code' grant requiring an OIDC client authentication as well as at least 'code' and 'redirect_uri' parameters which must be passed to OidcClient at the token request time.

exchange: 'urn:ietf:params:oauth:grant-type:token-exchange' grant requiring an OIDC client authentication as well as at least 'subject_token' parameter which must be passed to OidcClient at the token request time.

jwt: 'urn:ietf:params:oauth:grant-type:jwt-bearer' grant requiring an OIDC client authentication as well as at least an 'assertion' parameter which must be passed to OidcClient at the token request time.

refresh: 'refresh_token' grant requiring an OIDC client authentication and a refresh token. Note, OidcClient supports this grant by default if an access token acquisition response contained a refresh token. However, in some cases, the refresh token is provided out of band, for example, it can be shared between several of the confidential client’s services, etc. If 'quarkus.oidc-client.grant-type' is set to 'refresh' then OidcClient will only support refreshing the tokens.

ciba: 'urn:openid:params:grant-type:ciba' grant requiring an OIDC client authentication as well as 'auth_req_id' parameter which must be passed to OidcClient at the token request time.

device: 'urn:ietf:params:oauth:grant-type:device_code' grant requiring an OIDC client authentication as well as 'device_code' parameter which must be passed to OidcClient at the token request time.

client

quarkus.oidc-client.grant.access-token-property

quarkus.oidc-client."id".grant.access-token-property

Access token property name in a token grant response

Environment variable: QUARKUS_OIDC_CLIENT_GRANT_ACCESS_TOKEN_PROPERTY

string

access_token

quarkus.oidc-client.grant.refresh-token-property

quarkus.oidc-client."id".grant.refresh-token-property

Refresh token property name in a token grant response

Environment variable: QUARKUS_OIDC_CLIENT_GRANT_REFRESH_TOKEN_PROPERTY

string

refresh_token

quarkus.oidc-client.grant.expires-in-property

quarkus.oidc-client."id".grant.expires-in-property

Access token expiry property name in a token grant response

Environment variable: QUARKUS_OIDC_CLIENT_GRANT_EXPIRES_IN_PROPERTY

string

expires_in

quarkus.oidc-client.grant.refresh-expires-in-property

quarkus.oidc-client."id".grant.refresh-expires-in-property

Refresh token expiry property name in a token grant response

Environment variable: QUARKUS_OIDC_CLIENT_GRANT_REFRESH_EXPIRES_IN_PROPERTY

string

refresh_expires_in

quarkus.oidc-client.grant-options."grant-name"

quarkus.oidc-client."id".grant-options."grant-name"

Grant options

Environment variable: QUARKUS_OIDC_CLIENT_GRANT_OPTIONS__GRANT_NAME_

Map<String,Map<String,String>>

 

quarkus.oidc-client.early-tokens-acquisition

quarkus.oidc-client."id".early-tokens-acquisition

Requires that all filters which use 'OidcClient' acquire the tokens at the post-construct initialization time, possibly long before these tokens are used. This property should be disabled if the access token may expire before it is used for the first time and no refresh token is available.

Environment variable: QUARKUS_OIDC_CLIENT_EARLY_TOKENS_ACQUISITION

boolean

true

quarkus.oidc-client.headers."headers"

quarkus.oidc-client."id".headers."headers"

Custom HTTP headers which have to be sent to the token endpoint

Environment variable: QUARKUS_OIDC_CLIENT_HEADERS__HEADERS_

Map<String,String>

 

quarkus.oidc-client.refresh-interval

quarkus.oidc-client."id".refresh-interval

Token refresh interval. By default, OIDC client refreshes the token during the current request, when it detects that it has expired, or nearly expired if the refresh-token-time-skew() is configured. But, when this property is configured, OIDC client can refresh the token asynchronously in the configured interval. This property is only effective with OIDC client filters and other AbstractTokensProducer extensions, but not when you use the OidcClient#getTokens() API directly.

Environment variable: QUARKUS_OIDC_CLIENT_REFRESH_INTERVAL

Duration ℹ️ Duration format

 

HTTP proxy configuration

Type

Default

quarkus.oidc-client.proxy.host

quarkus.oidc-client."id".proxy.host

The host name or IP address of the Proxy.
Note: If the OIDC adapter requires a Proxy to talk with the OIDC server (Provider), set this value to enable the usage of a Proxy.

Environment variable: QUARKUS_OIDC_CLIENT_PROXY_HOST

string

 

quarkus.oidc-client.proxy.port

quarkus.oidc-client."id".proxy.port

The port number of the Proxy. The default value is 80.

Environment variable: QUARKUS_OIDC_CLIENT_PROXY_PORT

int

80

quarkus.oidc-client.proxy.username

quarkus.oidc-client."id".proxy.username

The username, if the Proxy needs authentication.

Environment variable: QUARKUS_OIDC_CLIENT_PROXY_USERNAME

string

 

quarkus.oidc-client.proxy.password

quarkus.oidc-client."id".proxy.password

The password, if the Proxy needs authentication.

Environment variable: QUARKUS_OIDC_CLIENT_PROXY_PASSWORD

string

 

TLS configuration

Type

Default

quarkus.oidc-client.tls.tls-configuration-name

quarkus.oidc-client."id".tls.tls-configuration-name

The name of the TLS configuration to use.

If a name is configured, it uses the configuration from quarkus.tls.<name>.* If a name is configured, but no TLS configuration is found with that name then an error will be thrown.

The default TLS configuration is not used by default.

Environment variable: QUARKUS_OIDC_CLIENT_TLS_TLS_CONFIGURATION_NAME

string

 

Different authentication options for OIDC client to access OIDC token and other secured endpoints

Type

Default

quarkus.oidc-client.credentials.secret

quarkus.oidc-client."id".credentials.secret

The client secret used by the client_secret_basic authentication method. Must be set unless a secret is set in client-secret or jwt client authentication is required. You can use client-secret.value instead, but both properties are mutually exclusive.

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_SECRET

string

 

quarkus.oidc-client.credentials.client-secret.value

quarkus.oidc-client."id".credentials.client-secret.value

The client secret value. This value is ignored if credentials.secret is set. Must be set unless a secret is set in client-secret or jwt client authentication is required.

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_CLIENT_SECRET_VALUE

string

 

quarkus.oidc-client.credentials.client-secret.provider.name

quarkus.oidc-client."id".credentials.client-secret.provider.name

The CredentialsProvider bean name, which should only be set if more than one CredentialsProvider is registered

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_CLIENT_SECRET_PROVIDER_NAME

string

 

quarkus.oidc-client.credentials.client-secret.provider.keyring-name

quarkus.oidc-client."id".credentials.client-secret.provider.keyring-name

The CredentialsProvider keyring name. The keyring name is only required when the CredentialsProvider being used requires the keyring name to look up the secret, which is often the case when a CredentialsProvider is shared by multiple extensions to retrieve credentials from a more dynamic source like a vault instance or secret manager

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_CLIENT_SECRET_PROVIDER_KEYRING_NAME

string

 

quarkus.oidc-client.credentials.client-secret.provider.key

quarkus.oidc-client."id".credentials.client-secret.provider.key

The CredentialsProvider client secret key

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_CLIENT_SECRET_PROVIDER_KEY

string

 

quarkus.oidc-client.credentials.client-secret.method

quarkus.oidc-client."id".credentials.client-secret.method

The authentication method. If the clientSecret.value secret is set, this method is basic by default.

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_CLIENT_SECRET_METHOD

basic: client_secret_basic (default): The client id and secret are submitted with the HTTP Authorization Basic scheme.

post: client_secret_post: The client id and secret are submitted as the client_id and client_secret form parameters.

post-jwt: client_secret_jwt: The client id and generated JWT secret are submitted as the client_id and client_secret form parameters.

query: client id and secret are submitted as HTTP query parameters. This option is only supported by the OIDC extension.

 

quarkus.oidc-client.credentials.jwt.source

quarkus.oidc-client."id".credentials.jwt.source

JWT token source: OIDC provider client or an existing JWT bearer token.

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_JWT_SOURCE

client: JWT token is generated by the OIDC provider client to support client_secret_jwt and private_key_jwt authentication methods.

bearer: JWT bearer token is used as a client assertion: https://www.rfc-editor.org/rfc/rfc7523#section-2.2.

client

quarkus.oidc-client.credentials.jwt.token-path

quarkus.oidc-client."id".credentials.jwt.token-path

Path to a file with a JWT bearer token that should be used as a client assertion. This path can only be set when JWT source (source()) is set to Source#BEARER.

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_JWT_TOKEN_PATH

path

 

quarkus.oidc-client.credentials.jwt.secret

quarkus.oidc-client."id".credentials.jwt.secret

If provided, indicates that JWT is signed using a secret key. It is mutually exclusive with key, key-file and key-store properties.

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_JWT_SECRET

string

 

quarkus.oidc-client.credentials.jwt.secret-provider.name

quarkus.oidc-client."id".credentials.jwt.secret-provider.name

The CredentialsProvider bean name, which should only be set if more than one CredentialsProvider is registered

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_JWT_SECRET_PROVIDER_NAME

string

 

quarkus.oidc-client.credentials.jwt.secret-provider.keyring-name

quarkus.oidc-client."id".credentials.jwt.secret-provider.keyring-name

The CredentialsProvider keyring name. The keyring name is only required when the CredentialsProvider being used requires the keyring name to look up the secret, which is often the case when a CredentialsProvider is shared by multiple extensions to retrieve credentials from a more dynamic source like a vault instance or secret manager

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_JWT_SECRET_PROVIDER_KEYRING_NAME

string

 

quarkus.oidc-client.credentials.jwt.secret-provider.key

quarkus.oidc-client."id".credentials.jwt.secret-provider.key

The CredentialsProvider client secret key

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_JWT_SECRET_PROVIDER_KEY

string

 

quarkus.oidc-client.credentials.jwt.key

quarkus.oidc-client."id".credentials.jwt.key

String representation of a private key. If provided, indicates that JWT is signed using a private key in PEM or JWK format. It is mutually exclusive with secret, key-file and key-store properties. You can use the signature-algorithm property to override the default key algorithm, RS256.

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_JWT_KEY

string

 

quarkus.oidc-client.credentials.jwt.key-file

quarkus.oidc-client."id".credentials.jwt.key-file

If provided, indicates that JWT is signed using a private key in PEM or JWK format. It is mutually exclusive with secret, key and key-store properties. You can use the signature-algorithm property to override the default key algorithm, RS256.

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_JWT_KEY_FILE

string

 

quarkus.oidc-client.credentials.jwt.key-store-file

quarkus.oidc-client."id".credentials.jwt.key-store-file

If provided, indicates that JWT is signed using a private key from a keystore. It is mutually exclusive with secret, key and key-file properties.

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_JWT_KEY_STORE_FILE

string

 

quarkus.oidc-client.credentials.jwt.key-store-password

quarkus.oidc-client."id".credentials.jwt.key-store-password

A parameter to specify the password of the keystore file.

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_JWT_KEY_STORE_PASSWORD

string

 

quarkus.oidc-client.credentials.jwt.key-id

quarkus.oidc-client."id".credentials.jwt.key-id

The private key id or alias.

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_JWT_KEY_ID

string

 

quarkus.oidc-client.credentials.jwt.key-password

quarkus.oidc-client."id".credentials.jwt.key-password

The private key password.

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_JWT_KEY_PASSWORD

string

 

quarkus.oidc-client.credentials.jwt.audience

quarkus.oidc-client."id".credentials.jwt.audience

The JWT audience (aud) claim value. By default, the audience is set to the address of the OpenId Connect Provider’s token endpoint.

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_JWT_AUDIENCE

string

 

quarkus.oidc-client.credentials.jwt.token-key-id

quarkus.oidc-client."id".credentials.jwt.token-key-id

The key identifier of the signing key added as a JWT kid header.

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_JWT_TOKEN_KEY_ID

string

 

quarkus.oidc-client.credentials.jwt.issuer

quarkus.oidc-client."id".credentials.jwt.issuer

The issuer of the signing key added as a JWT iss claim. The default value is the client id.

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_JWT_ISSUER

string

 

quarkus.oidc-client.credentials.jwt.subject

quarkus.oidc-client."id".credentials.jwt.subject

Subject of the signing key added as a JWT sub claim The default value is the client id.

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_JWT_SUBJECT

string

 

quarkus.oidc-client.credentials.jwt.claims."claim-name"

quarkus.oidc-client."id".credentials.jwt.claims."claim-name"

Additional claims.

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_JWT_CLAIMS__CLAIM_NAME_

Map<String,String>

 

quarkus.oidc-client.credentials.jwt.signature-algorithm

quarkus.oidc-client."id".credentials.jwt.signature-algorithm

The signature algorithm used for the key-file property. Supported values: RS256 (default), RS384, RS512, PS256, PS384, PS512, ES256, ES384, ES512, HS256, HS384, HS512.

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_JWT_SIGNATURE_ALGORITHM

string

 

quarkus.oidc-client.credentials.jwt.lifespan

quarkus.oidc-client."id".credentials.jwt.lifespan

The JWT lifespan in seconds. This value is added to the time at which the JWT was issued to calculate the expiration time.

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_JWT_LIFESPAN

int

10

quarkus.oidc-client.credentials.jwt.assertion

quarkus.oidc-client."id".credentials.jwt.assertion

If true then the client authentication token is a JWT bearer grant assertion. Instead of producing 'client_assertion' and 'client_assertion_type' form properties, only 'assertion' is produced. This option is only supported by the OIDC client extension.

Environment variable: QUARKUS_OIDC_CLIENT_CREDENTIALS_JWT_ASSERTION

boolean

false

About the Duration format

To write duration values, use the standard java.time.Duration format. See the Duration#parse() Java API documentation for more information.

You can also use a simplified format, starting with a number:

  • If the value is only a number, it represents time in seconds.
  • If the value is a number followed by ms, it represents time in milliseconds.

In other cases, the simplified format is translated to the java.time.Duration format for parsing:

  • If the value is a number followed by h, m, or s, it is prefixed with PT.
  • If the value is a number followed by d, it is prefixed with P.

1.6.2. OIDC token propagation
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🔒 Fixed at build time: Configuration property fixed at build time - All other configuration properties are overridable at runtime

Expand

Configuration property

Type

Default

🔒 Fixed at build time quarkus.rest-client-oidc-token-propagation.enabled

If the OIDC Token Reactive Propagation is enabled.

Environment variable: QUARKUS_REST_CLIENT_OIDC_TOKEN_PROPAGATION_ENABLED

boolean

true

🔒 Fixed at build time quarkus.rest-client-oidc-token-propagation.enabled-during-authentication

Whether the token propagation is enabled during the SecurityIdentity augmentation.

For example, you may need to use a REST client from SecurityIdentityAugmentor to propagate the current token to acquire additional roles for the SecurityIdentity.

Note, this feature relies on a duplicated context. More information about Vert.x duplicated context can be found in this guide.

Environment variable: QUARKUS_REST_CLIENT_OIDC_TOKEN_PROPAGATION_ENABLED_DURING_AUTHENTICATION

boolean

false

🔒 Fixed at build time quarkus.rest-client-oidc-token-propagation.exchange-token

Exchange the current token with OpenId Connect Provider for a new token using either "urn:ietf:params:oauth:grant-type:token-exchange" or "urn:ietf:params:oauth:grant-type:jwt-bearer" token grant before propagating it.

Environment variable: QUARKUS_REST_CLIENT_OIDC_TOKEN_PROPAGATION_EXCHANGE_TOKEN

boolean

false

🔒 Fixed at build time quarkus.rest-client-oidc-token-propagation.client-name

Name of the configured OidcClient. Note this property is only used if the exchangeToken property is enabled.

Environment variable: QUARKUS_REST_CLIENT_OIDC_TOKEN_PROPAGATION_CLIENT_NAME

string

 

1.7. References
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Learn how to use OpenID Connect (OIDC) and OAuth2 clients with filters to get, refresh, and propagate access tokens in your applications.

For more information about OIDC Client and Token Propagation support in Quarkus, see the OpenID Connect (OIDC) and OAuth2 client and filters reference guide.

To protect your applications by using Bearer Token Authorization, see the OpenID Connect (OIDC) Bearer token authentication guide.

2.1. Prerequisites
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To complete this guide, you need:

  • Roughly 15 minutes
  • An IDE
  • JDK 17+ installed with JAVA_HOME configured appropriately
  • Apache Maven 3.8.6 or later
  • A working container runtime (Docker or Podman)
  • Optionally the Quarkus CLI if you want to use it
  • Optionally Mandrel or GraalVM installed and configured appropriately if you want to build a native executable (or Docker if you use a native container build)
  • jq tool

2.2. Architecture
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In this example, an application is built with two Jakarta REST resources, FrontendResource and ProtectedResource. Here, FrontendResource uses one of three methods to propagate access tokens to ProtectedResource:

  • It can get a token by using an OIDC client filter before propagating it.
  • It can get a token by using a programmatically created OIDC client and propagate it by passing it to a REST client method as an HTTP Authorization header value.
  • It can use an OIDC token propagation filter to propagate the incoming access token.

FrontendResource has eight endpoints:

  • /frontend/user-name-with-oidc-client-token
  • /frontend/admin-name-with-oidc-client-token
  • /frontend/user-name-with-oidc-client-token-header-param
  • /frontend/admin-name-with-oidc-client-token-header-param
  • /frontend/user-name-with-oidc-client-token-header-param-blocking
  • /frontend/admin-name-with-oidc-client-token-header-param-blocking
  • /frontend/user-name-with-propagated-token
  • /frontend/admin-name-with-propagated-token

When either /frontend/user-name-with-oidc-client-token or /frontend/admin-name-with-oidc-client-token endpoint is called, FrontendResource uses a REST client with an OIDC client filter to get and propagate an access token to ProtectedResource . When either /frontend/user-name-with-oidc-client-token-header-param or /frontend/admin-name-with-oidc-client-token-header-param endpoint is called, FrontendResource uses a programmatically created OIDC client to get and propagate an access token to ProtectedResource by passing it to a REST client method as an HTTP Authorization header value. When either /frontend/user-name-with-propagated-token or /frontend/admin-name-with-propagated-token endpoint is called, FrontendResource uses a REST client with OIDC Token Propagation Filter to propagate the current incoming access token to ProtectedResource.

ProtectedResource has two endpoints:

  • /protected/user-name
  • /protected/admin-name

Both endpoints return the username extracted from the incoming access token, which was propagated to ProtectedResource from FrontendResource. The only difference between these endpoints is that calling /protected/user-name is only allowed if the current access token has a user role, and calling /protected/admin-name is only allowed if the current access token has an admin role.

2.3. Solution
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We recommend that you follow the instructions in the next sections and create the application step by step. However, you can go right to the completed example.

Clone the Git repository: git clone https://github.com/quarkusio/quarkus-quickstarts.git -b 3.27, or download an archive.

The solution is in the security-openid-connect-client-quickstart directory.

2.4. Creating the Maven project
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First, you need a new project. Create a new project with the following command:

  • Using the Quarkus CLI: 

    quarkus create app org.acme:security-openid-connect-client-quickstart \
    --extension='oidc,rest-client-oidc-filter,rest-client-oidc-token-propagation,rest' \
    --no-code
cd security-openid-connect-client-quickstart
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    To create a Gradle project, add the --gradle or --gradle-kotlin-dsl option.

    For more information about how to install and use the Quarkus CLI, see the Quarkus CLI guide.

  • Using Maven: 

    mvn com.redhat.quarkus.platform:quarkus-maven-plugin:3.27.1:create \
    -DprojectGroupId=org.acme \
    -DprojectArtifactId=security-openid-connect-client-quickstart \
    -Dextensions='oidc,rest-client-oidc-filter,rest-client-oidc-token-propagation,rest' \
    -DnoCode
cd security-openid-connect-client-quickstart
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    To create a Gradle project, add the -DbuildTool=gradle or -DbuildTool=gradle-kotlin-dsl option.

For Windows users:

  • If using cmd, (don’t use backward slash \ and put everything on the same line)
  • If using Powershell, wrap -D parameters in double quotes e.g. "-DprojectArtifactId=security-openid-connect-client-quickstart"

It generates a Maven project, importing the oidc, rest-client-oidc-filter, rest-client-oidc-token-propagation, and rest extensions.

If you already have your Quarkus project configured, you can add these extensions to your project by running the following command in your project base directory:

  • Using the Quarkus CLI: 

    quarkus extension add oidc,rest-client-oidc-filter,rest-client-oidc-token-propagation,rest
    Copy to Clipboard Toggle word wrap

  • Using Maven: 

    ./mvnw quarkus:add-extension -Dextensions='oidc,rest-client-oidc-filter,rest-client-oidc-token-propagation,rest'
    Copy to Clipboard Toggle word wrap

  • Using Gradle: 

    ./gradlew addExtension --extensions='oidc,rest-client-oidc-filter,rest-client-oidc-token-propagation,rest'
    Copy to Clipboard Toggle word wrap

It adds the following extensions to your build file:

  • Using Maven: 

    <dependency>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-oidc</artifactId>
</dependency>
<dependency>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-rest-client-oidc-filter</artifactId>
</dependency>
<dependency>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-rest-client-oidc-token-propagation</artifactId>
</dependency>
<dependency>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-rest</artifactId>
</dependency>
    Copy to Clipboard Toggle word wrap

  • Using Gradle: 

    implementation("io.quarkus:quarkus-oidc,rest-client-oidc-filter,rest-client-oidc-token-propagation,rest")
    Copy to Clipboard Toggle word wrap

2.5. Writing the application
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Start by implementing ProtectedResource: 

package org.acme.security.openid.connect.client;

import jakarta.annotation.security.RolesAllowed;
import jakarta.inject.Inject;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;

import io.quarkus.security.Authenticated;
import io.smallrye.mutiny.Uni;

import org.eclipse.microprofile.jwt.JsonWebToken;

@Path("/protected")
@Authenticated
public class ProtectedResource {

    @Inject
    JsonWebToken principal;

    @GET
    @RolesAllowed("user")
    @Produces("text/plain")
    @Path("userName")
    public Uni<String> userName() {
        return Uni.createFrom().item(principal.getName());
    }

    @GET
    @RolesAllowed("admin")
    @Produces("text/plain")
    @Path("adminName")
    public Uni<String> adminName() {
        return Uni.createFrom().item(principal.getName());
    }
}
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ProtectedResource returns a name from both userName() and adminName() methods. The name is extracted from the current JsonWebToken.

Next, add the following REST clients:

  1. RestClientWithOidcClientFilter, which uses an OIDC client filter provided by the quarkus-rest-client-oidc-filter extension to get and propagate an access token.
  2. RestClientWithTokenHeaderParam, which accepts a token already acquired by the programmatically created OidcClient as an HTTP Authorization header value.
  3. RestClientWithTokenPropagationFilter, which uses an OIDC token propagation filter provided by the quarkus-rest-client-oidc-token-propagation extension to get and propagate an access token.

Add the RestClientWithOidcClientFilter REST client: 

package org.acme.security.openid.connect.client;

import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;

import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;

import io.quarkus.oidc.client.filter.OidcClientFilter;
import io.smallrye.mutiny.Uni;

@RegisterRestClient
@OidcClientFilter
1 

@Path("/")
public interface RestClientWithOidcClientFilter {

    @GET
    @Produces("text/plain")
    @Path("userName")
    Uni<String> getUserName();

    @GET
    @Produces("text/plain")
    @Path("adminName")
    Uni<String> getAdminName();
}
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1
Register an OIDC client filter with the REST client to get and propagate the tokens.

Add the RestClientWithTokenHeaderParam REST client: 

package org.acme.security.openid.connect.client;

import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;

import io.smallrye.mutiny.Uni;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.HeaderParam;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;

@RegisterRestClient
@Path("/")
public interface RestClientWithTokenHeaderParam {

    @GET
    @Produces("text/plain")
    @Path("userName")
    Uni<String> getUserName(@HeaderParam("Authorization") String authorization);
1 


    @GET
    @Produces("text/plain")
    @Path("adminName")
    Uni<String> getAdminName(@HeaderParam("Authorization") String authorization);
2 

}
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1 2
RestClientWithTokenHeaderParam REST client expects that the tokens will be passed to it as HTTP Authorization header values.

Add the RestClientWithTokenPropagationFilter REST client: 

package org.acme.security.openid.connect.client;

import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;

import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;

import io.quarkus.oidc.token.propagation.common.AccessToken;

import io.smallrye.mutiny.Uni;

@RegisterRestClient
@AccessToken
1 

@Path("/")
public interface RestClientWithTokenPropagationFilter {

    @GET
    @Produces("text/plain")
    @Path("userName")
    Uni<String> getUserName();

    @GET
    @Produces("text/plain")
    @Path("adminName")
    Uni<String> getAdminName();
}
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1
Register an OIDC token propagation filter with the REST client to propagate the incoming already-existing tokens.
Important

Do not use the RestClientWithOidcClientFilter and RestClientWithTokenPropagationFilter interfaces in the same REST client because they can conflict, leading to issues. For example, the OIDC client filter can override the token from the OIDC token propagation filter, or the propagation filter might not work correctly if it attempts to propagate a token when none is available, expecting the OIDC client filter to obtain a new token instead.

Also, add OidcClientCreator to create an OIDC client programmatically at startup. OidcClientCreator supports RestClientWithTokenHeaderParam REST client calls: 

package org.acme.security.openid.connect.client;

import java.util.Map;

import org.eclipse.microprofile.config.inject.ConfigProperty;

import io.quarkus.oidc.client.OidcClient;
import io.quarkus.oidc.client.OidcClients;
import io.quarkus.oidc.client.runtime.OidcClientConfig;
import io.quarkus.oidc.client.runtime.OidcClientConfig.Grant.Type;
import io.quarkus.runtime.StartupEvent;
import io.smallrye.mutiny.Uni;
import jakarta.enterprise.context.ApplicationScoped;
import jakarta.enterprise.event.Observes;
import jakarta.inject.Inject;

@ApplicationScoped
public class OidcClientCreator {

    @Inject
    OidcClients oidcClients;
1 

    @ConfigProperty(name = "quarkus.oidc.auth-server-url")
    String oidcProviderAddress;

    private volatile OidcClient oidcClient;

    public void startup(@Observes StartupEvent event) {
    	createOidcClient().subscribe().with(client -> {oidcClient = client;});
    }

    public OidcClient getOidcClient() {
        return oidcClient;
    }

    private Uni<OidcClient> createOidcClient() {
        OidcClientConfig cfg = OidcClientConfig
            .authServerUrl(oidcProviderAddress)
            .id("myclient")
            .clientId("backend-service")
            .credentials("secret")
            .grant(Type.PASSWORD)
            .grantOptions("password", Map.of("username", "alice", "password", "alice"))
            .build();
        return oidcClients.newClient(cfg);
    }
}
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1
OidcClients can be used to retrieve the already initialized, named OIDC clients and create new OIDC clients on demand.

Now, finish creating the application by adding FrontendResource: 

package org.acme.security.openid.connect.client;

import jakarta.inject.Inject;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;

import io.quarkus.oidc.client.Tokens;
import io.quarkus.oidc.client.runtime.TokensHelper;

import org.eclipse.microprofile.rest.client.inject.RestClient;

import io.smallrye.mutiny.Uni;

@Path("/frontend")
public class FrontendResource {
    @Inject
    @RestClient
    RestClientWithOidcClientFilter restClientWithOidcClientFilter;
1 


    @Inject
    @RestClient
    RestClientWithTokenPropagationFilter restClientWithTokenPropagationFilter;
2 


    @Inject
    OidcClientCreator oidcClientCreator;
    TokensHelper tokenHelper = new TokensHelper();
3 

    @Inject
    @RestClient
    RestClientWithTokenHeaderParam restClientWithTokenHeaderParam;
4 


    @GET
    @Path("user-name-with-oidc-client-token")
    @Produces("text/plain")
    public Uni<String> getUserNameWithOidcClientToken() {
5 

        return restClientWithOidcClientFilter.getUserName();
    }

    @GET
    @Path("admin-name-with-oidc-client-token")
    @Produces("text/plain")
    public Uni<String> getAdminNameWithOidcClientToken() {
6 

	return restClientWithOidcClientFilter.getAdminName();
    }

    @GET
    @Path("user-name-with-propagated-token")
    @Produces("text/plain")
    public Uni<String> getUserNameWithPropagatedToken() {
7 

        return restClientWithTokenPropagationFilter.getUserName();
    }

    @GET
    @Path("admin-name-with-propagated-token")
    @Produces("text/plain")
    public Uni<String> getAdminNameWithPropagatedToken() {
8 

        return restClientWithTokenPropagationFilter.getAdminName();
    }

    @GET
    @Path("user-name-with-oidc-client-token-header-param")
    @Produces("text/plain")
    public Uni<String> getUserNameWithOidcClientTokenHeaderParam() {
9 

    	return tokenHelper.getTokens(oidcClientCreator.getOidcClient()).onItem()
        		.transformToUni(tokens -> restClientWithTokenHeaderParam.getUserName("Bearer " + tokens.getAccessToken()));
    }

    @GET
    @Path("admin-name-with-oidc-client-token-header-param")
    @Produces("text/plain")
    public Uni<String> getAdminNameWithOidcClientTokenHeaderParam() {
10 

    	return tokenHelper.getTokens(oidcClientCreator.getOidcClient()).onItem()
        		.transformToUni(tokens -> restClientWithTokenHeaderParam.getAdminName("Bearer " + tokens.getAccessToken()));
    }

    @GET
    @Path("user-name-with-oidc-client-token-header-param-blocking")
    @Produces("text/plain")
    public String getUserNameWithOidcClientTokenHeaderParamBlocking() {
11 

    	Tokens tokens = tokenHelper.getTokens(oidcClientCreator.getOidcClient()).await().indefinitely();
        return restClientWithTokenHeaderParam.getUserName("Bearer " + tokens.getAccessToken()).await().indefinitely();
    }

    @GET
    @Path("admin-name-with-oidc-client-token-header-param-blocking")
    @Produces("text/plain")
    public String getAdminNameWithOidcClientTokenHeaderParamBlocking() {
12 

    	Tokens tokens = tokenHelper.getTokens(oidcClientCreator.getOidcClient()).await().indefinitely();
        return restClientWithTokenHeaderParam.getAdminName("Bearer " + tokens.getAccessToken()).await().indefinitely();
    }

}
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1 5 6
FrontendResource uses the injected RestClientWithOidcClientFilter REST client with the OIDC client filter to get and propagate an access token to ProtectedResource when either /frontend/user-name-with-oidc-client-token or /frontend/admin-name-with-oidc-client-token is called.
2 7 8
FrontendResource uses the injected RestClientWithTokenPropagationFilter REST client with the OIDC token propagation filter to propagate the current incoming access token to ProtectedResource when either /frontend/user-name-with-propagated-token or /frontend/admin-name-with-propagated-token is called.
4 9 10
FrontendResource uses the programmatically created OIDC client to get and propagate an access token to ProtectedResource by passing it directly to the injected RestClientWithTokenHeaderParam REST client’s method as an HTTP Authorization header value, when either /frontend/user-name-with-oidc-client-token-header-param or /frontend/admin-name-with-oidc-client-token-header-param is called.
11 12
Sometimes, one may have to acquire tokens in a blocking manner before propagating them with the REST client. This example shows how to acquire the tokens in such cases.
3
io.quarkus.oidc.client.runtime.TokensHelper is a useful tool when OIDC client is used directly, without the OIDC client filter. To use TokensHelper, pass OIDC Client to it to get the tokens and TokensHelper acquires the tokens and refreshes them if necessary in a thread-safe way.

Finally, add a Jakarta REST ExceptionMapper: 

package org.acme.security.openid.connect.client;

import jakarta.ws.rs.core.Response;
import jakarta.ws.rs.ext.ExceptionMapper;
import jakarta.ws.rs.ext.Provider;

import org.jboss.resteasy.reactive.ClientWebApplicationException;

@Provider
public class FrontendExceptionMapper implements ExceptionMapper<ClientWebApplicationException> {

	@Override
	public Response toResponse(ClientWebApplicationException t) {
		return Response.status(t.getResponse().getStatus()).build();
	}

}
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This exception mapper is only added to verify during the tests that ProtectedResource returns 403 when the token has no expected role. Without this mapper, Quarkus REST (formerly RESTEasy Reactive) would correctly convert the exceptions that escape from REST client calls to 500 to avoid leaking the information from the downstream resources such as ProtectedResource. However, in the tests, it would not be possible to assert that 500 is caused by an authorization exception instead of some internal error.

2.6. Configuring the application
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Having prepared the code, you configure the application: 

# Configure OIDC

%prod.quarkus.oidc.auth-server-url=http://localhost:8180/realms/quarkus
quarkus.oidc.client-id=backend-service
quarkus.oidc.credentials.secret=secret

# Tell Dev Services for Keycloak to import the realm file
# This property is ineffective when running the application in JVM or Native modes but only in dev and test modes.

quarkus.keycloak.devservices.realm-path=quarkus-realm.json

# Configure OIDC Client

quarkus.oidc-client.auth-server-url=${quarkus.oidc.auth-server-url}
quarkus.oidc-client.client-id=${quarkus.oidc.client-id}
quarkus.oidc-client.credentials.secret=${quarkus.oidc.credentials.secret}
quarkus.oidc-client.grant.type=password
quarkus.oidc-client.grant-options.password.username=alice
quarkus.oidc-client.grant-options.password.password=alice

# Configure REST clients

%prod.port=8080
%dev.port=8080
%test.port=8081

org.acme.security.openid.connect.client.RestClientWithOidcClientFilter/mp-rest/url=http://localhost:${port}/protected
org.acme.security.openid.connect.client.RestClientWithTokenHeaderParam/mp-rest/url=http://localhost:${port}/protected
org.acme.security.openid.connect.client.RestClientWithTokenPropagationFilter/mp-rest/url=http://localhost:${port}/protected
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The preceding configuration references Keycloak, which is used by ProtectedResource to verify the incoming access tokens and by OidcClient to get the tokens for a user alice by using a password grant. Both REST clients point to ProtectedResource's HTTP address.

Note

Adding a %prod. profile prefix to quarkus.oidc.auth-server-url ensures that Dev Services for Keycloak launches a container for you when the application is run in dev or test modes. For more information, see the Running the application in dev mode section.

2.7. Starting and configuring the Keycloak server
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Note

Do not start the Keycloak server when you run the application in dev or test modes; Dev Services for Keycloak launches a container. For more information, see the Running the application in dev mode section. Ensure you put the realm configuration file on the classpath, in the target/classes directory. This placement ensures that the file is automatically imported in dev mode. However, if you have already built a complete solution, you do not need to add the realm file to the classpath because the build process has already done so.

To start a Keycloak Server, you can use Docker and just run the following command: 

docker run --name keycloak -e KC_BOOTSTRAP_ADMIN_USERNAME=admin -e KC_BOOTSTRAP_ADMIN_PASSWORD=admin -p 8180:8080 quay.io/keycloak/keycloak:{keycloak.version} start-dev
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Set {keycloak.version} to 26.3.4 or later.

You can access your Keycloak Server at localhost:8180.

Log in as the admin user to access the Keycloak Administration Console. The password is admin.

Import the realm configuration file to create a new realm. For more details, see the Keycloak documentation about how to create a new realm.

This quarkus realm file adds a frontend client, and alice and admin users. alice has a user role. admin has both user and admin roles.

2.8. Running the application in dev mode
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To run the application in a dev mode, use:

  • Using the Quarkus CLI: 

    quarkus dev
    Copy to Clipboard Toggle word wrap

  • Using Maven: 

    ./mvnw quarkus:dev
    Copy to Clipboard Toggle word wrap

  • Using Gradle: 

    ./gradlew --console=plain quarkusDev
    Copy to Clipboard Toggle word wrap

Dev Services for Keycloak launches a Keycloak container and imports quarkus-realm.json.

Open a Dev UI available at /q/dev-ui and click a Keycloak provider link in the OpenID Connect Dev UI card.

When asked, log in to a Single Page Application provided by the OpenID Connect Dev UI:

  • Log in as admin, with the password, admin. This user has both admin and user roles.

    • Access /frontend/user-name-with-propagated-token, which returns 200.
    • Access /frontend/admin-name-with-propagated-token, which returns 200.

  • Log out and back in as alice with the password, alice. This user has a user role.

    • Access /frontend/user-name-with-propagated-token, which returns 200.
    • Access /frontend/admin-name-with-propagated-token, which returns 403.

You have tested that FrontendResource can propagate the access tokens from the OpenID Connect Dev UI.

2.9. Running the application in JVM mode
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After exploring the application in dev mode, you can run it as a standard Java application.

First, compile it:

  • Using the Quarkus CLI: 

    quarkus build
    Copy to Clipboard Toggle word wrap

  • Using Maven: 

    ./mvnw install
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  • Using Gradle: 

    ./gradlew build
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Then, run it: 

java -jar target/quarkus-app/quarkus-run.jar
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2.10. Running the application in native mode
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You can compile this demo into native code; no modifications are required.

This implies that you no longer need to install a JVM on your production environment, as the runtime technology is included in the produced binary and optimized to run with minimal resources.

Compilation takes longer, so this step is turned off by default. To build again, enable the native profile:

  • Using the Quarkus CLI: 

    quarkus build --native
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  • Using Maven: 

    ./mvnw install -Dnative
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  • Using Gradle: 

    ./gradlew build -Dquarkus.native.enabled=true
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After a little while, when the build finishes, you can run the native binary directly: 

./target/security-openid-connect-quickstart-1.0.0-SNAPSHOT-runner
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2.11. Testing the application
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For more information about testing your application in dev mode, see the preceding Running the application in dev mode section.

You can test the application launched in JVM or Native modes with curl.

Obtain an access token for alice: 

export access_token=$(\
    curl --insecure -X POST http://localhost:8180/realms/quarkus/protocol/openid-connect/token \
    --user backend-service:secret \
    -H 'content-type: application/x-www-form-urlencoded' \
    -d 'username=alice&password=alice&grant_type=password' | jq --raw-output '.access_token' \
 )
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Use this token to call /frontend/user-name-with-propagated-token. This command returns the 200 status code and the name alice: 

curl -i -X GET \
  http://localhost:8080/frontend/user-name-with-propagated-token \
  -H "Authorization: Bearer "$access_token
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Use the same token to call /frontend/admin-name-with-propagated-token. In contrast to the preceding command, this command returns 403 because alice has only a user role: 

curl -i -X GET \
  http://localhost:8080/frontend/admin-name-with-propagated-token \
  -H "Authorization: Bearer "$access_token
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Next, obtain an access token for admin: 

export access_token=$(\
    curl --insecure -X POST http://localhost:8180/realms/quarkus/protocol/openid-connect/token \
    --user backend-service:secret \
    -H 'content-type: application/x-www-form-urlencoded' \
    -d 'username=admin&password=admin&grant_type=password' | jq --raw-output '.access_token' \
 )
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Use this token to call /frontend/user-name-with-propagated-token. This command returns a 200 status code and the name admin: 

curl -i -X GET \
  http://localhost:8080/frontend/user-name-with-propagated-token \
  -H "Authorization: Bearer "$access_token
Copy to Clipboard Toggle word wrap

Use the same token to call /frontend/admin-name-with-propagated-token. This command also returns the 200 status code and the name admin because admin has both user and admin roles: 

curl -i -X GET \
  http://localhost:8080/frontend/admin-name-with-propagated-token \
  -H "Authorization: Bearer "$access_token
Copy to Clipboard Toggle word wrap

Next, check the FrontendResource methods, which do not propagate the existing tokens but use OidcClient to get and propagate the tokens. As already shown, OidcClient is configured to get the tokens for the alice user. 

curl -i -X GET \
  http://localhost:8080/frontend/user-name-with-oidc-client-token
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This command returns the 200 status code and the name alice. 

curl -i -X GET \
  http://localhost:8080/frontend/admin-name-with-oidc-client-token
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In contrast with the preceding command, this command returns a 403 status code.

Next, test that the programmatically created OIDC client correctly acquires and propagates the token with RestClientWithTokenHeaderParam both in reactive and imperative (blocking) modes.

Call the /user-name-with-oidc-client-token-header-param. This command returns the 200 status code and the name alice: 

curl -i -X GET \
  http://localhost:8080/frontend/user-name-with-oidc-client-token-header-param
Copy to Clipboard Toggle word wrap

Call the /admin-name-with-oidc-client-token-header-param. In contrast with the preceding command, this command returns a 403 status code: 

curl -i -X GET \
  http://localhost:8080/frontend/admin-name-with-oidc-client-token-header-param
Copy to Clipboard Toggle word wrap

Next, test the endpoints which use OIDC client in in the blocking mode.

Call the /user-name-with-oidc-client-token-header-param-blocking. This command returns the 200 status code and the name alice: 

curl -i -X GET \
  http://localhost:8080/frontend/user-name-with-oidc-client-token-header-param-blocking
Copy to Clipboard Toggle word wrap

Call the /admin-name-with-oidc-client-token-header-param-blocking. In contrast with the preceding command, this command returns a 403 status code: 

curl -i -X GET \
  http://localhost:8080/frontend/admin-name-with-oidc-client-token-header-param-blocking
Copy to Clipboard Toggle word wrap

2.12. References
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Legal Notice
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