3.2.4. OIDC request filters

package io.quarkus.it.keycloak;

import io.quarkus.oidc.OidcConfigurationMetadata;
import jakarta.enterprise.context.ApplicationScoped;

import io.quarkus.arc.Unremovable;
import io.quarkus.oidc.common.OidcRequestContext;
import io.quarkus.oidc.common.OidcRequestFilter;

@ApplicationScoped
@Unremovable
public class OidcTokenRequestCustomizer implements OidcRequestFilter {
    @Override
    public void filter(OidcRequestContext requestContext) {
        OidcConfigurationMetadata metadata = requestContext.contextProperties().get(OidcConfigurationMetadata.class.getName()); 

        // Metadata URI is absolute, request URI value is relative
        if (metadata.getTokenUri().endsWith(requestContext.request().uri())) { 

            requestContext.request().putHeader("TokenGrantDigest", calculateDigest(requestContext.requestBody().toString()));
        }
    }
    private String calculateDigest(String bodyString) {
        // Apply the required digest algorithm to the body string
    }
}

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.OidcRequestContext;
import io.quarkus.oidc.common.OidcRequestFilter;

@ApplicationScoped
@Unremovable
@OidcEndpoint(value = Type.DISCOVERY) 

public class OidcDiscoveryRequestCustomizer implements OidcRequestFilter {

    @Override
    public void filter(OidcRequestContext requestContext) {
        requestContext.request().putHeader("Discovery", "OK");
    }
}