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Add Keycloak Authorization dynamic tenant config resolution
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| package io.quarkus.keycloak.pep; | ||
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| import org.keycloak.adapters.authorization.PolicyEnforcer; | ||
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| import io.smallrye.mutiny.Uni; | ||
| import io.vertx.ext.web.RoutingContext; | ||
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| /** | ||
| * A {@link PolicyEnforcer} resolver. | ||
| */ | ||
| public interface PolicyEnforcerResolver { | ||
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| Uni<PolicyEnforcer> resolvePolicyEnforcer(RoutingContext routingContext, String tenantId); | ||
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| long getReadTimeout(); | ||
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| } |
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| @@ -0,0 +1,34 @@ | ||
| package io.quarkus.keycloak.pep; | ||
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| import java.util.function.Supplier; | ||
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| import io.quarkus.keycloak.pep.runtime.KeycloakPolicyEnforcerTenantConfig; | ||
| import io.smallrye.mutiny.Uni; | ||
| import io.vertx.ext.web.RoutingContext; | ||
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| /** | ||
| * A tenant resolver is responsible for resolving the {@link KeycloakPolicyEnforcerTenantConfig} for tenants, dynamically. | ||
| */ | ||
| public interface TenantPolicyConfigResolver { | ||
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| /** | ||
| * Returns a {@link KeycloakPolicyEnforcerTenantConfig} given a {@code RoutingContext} and tenant id. | ||
| * | ||
| * @param routingContext the routing context | ||
| * @param tenantId tenant id | ||
| * @param requestContext request context | ||
| * | ||
| * @return the tenant configuration. If the uni resolves to {@code null}, indicates that the default | ||
| * configuration/tenant should be chosen | ||
| */ | ||
| Uni<KeycloakPolicyEnforcerTenantConfig> resolve(RoutingContext routingContext, String tenantId, | ||
| KeycloakRequestContext requestContext); | ||
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| /** | ||
| * Keycloak Context that can be used to run blocking tasks. | ||
| */ | ||
| interface KeycloakRequestContext { | ||
| <T> Uni<T> runBlocking(Supplier<T> function); | ||
| } | ||
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| } |
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| @@ -0,0 +1,118 @@ | ||
| package io.quarkus.keycloak.pep.runtime; | ||
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| import static io.quarkus.keycloak.pep.runtime.KeycloakPolicyEnforcerUtil.createPolicyEnforcer; | ||
| import static io.quarkus.keycloak.pep.runtime.KeycloakPolicyEnforcerUtil.getOidcTenantConfig; | ||
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| import java.util.HashMap; | ||
| import java.util.Map; | ||
| import java.util.function.Function; | ||
| import java.util.function.Supplier; | ||
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| import jakarta.enterprise.inject.Instance; | ||
| import jakarta.inject.Singleton; | ||
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| import org.keycloak.adapters.authorization.PolicyEnforcer; | ||
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| import io.quarkus.keycloak.pep.PolicyEnforcerResolver; | ||
| import io.quarkus.keycloak.pep.TenantPolicyConfigResolver; | ||
| import io.quarkus.oidc.OidcTenantConfig; | ||
| import io.quarkus.oidc.runtime.OidcConfig; | ||
| import io.quarkus.runtime.TlsConfig; | ||
| import io.quarkus.security.spi.runtime.BlockingSecurityExecutor; | ||
| import io.quarkus.vertx.http.runtime.HttpConfiguration; | ||
| import io.smallrye.mutiny.Uni; | ||
| import io.vertx.ext.web.RoutingContext; | ||
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| @Singleton | ||
| public class DefaultPolicyEnforcerResolver implements PolicyEnforcerResolver { | ||
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| private final TenantPolicyConfigResolver dynamicConfigResolver; | ||
| private final TenantPolicyConfigResolver.KeycloakRequestContext requestContext; | ||
| private final Map<String, PolicyEnforcer> namedPolicyEnforcers; | ||
| private final PolicyEnforcer defaultPolicyEnforcer; | ||
| private final long readTimeout; | ||
| private final boolean tlsConfigTrustAll; | ||
| private final OidcConfig oidcConfig; | ||
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| DefaultPolicyEnforcerResolver(OidcConfig oidcConfig, KeycloakPolicyEnforcerConfig config, TlsConfig tlsConfig, | ||
| HttpConfiguration httpConfiguration, BlockingSecurityExecutor blockingSecurityExecutor, | ||
| Instance<TenantPolicyConfigResolver> configResolver) { | ||
| this.readTimeout = httpConfiguration.readTimeout.toMillis(); | ||
| this.oidcConfig = oidcConfig; | ||
| this.tlsConfigTrustAll = tlsConfig.trustAll; | ||
| this.defaultPolicyEnforcer = createPolicyEnforcer(oidcConfig.defaultTenant, config.defaultTenant(), tlsConfigTrustAll); | ||
| this.namedPolicyEnforcers = createNamedPolicyEnforcers(oidcConfig, config, tlsConfigTrustAll); | ||
| if (configResolver.isResolvable()) { | ||
| this.dynamicConfigResolver = configResolver.get(); | ||
| this.requestContext = createKeycloakRequestContext(blockingSecurityExecutor); | ||
| } else { | ||
| this.dynamicConfigResolver = null; | ||
| this.requestContext = null; | ||
| } | ||
| } | ||
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| @Override | ||
| public Uni<PolicyEnforcer> resolvePolicyEnforcer(RoutingContext routingContext, String tenantId) { | ||
| if (dynamicConfigResolver == null) { | ||
| return Uni.createFrom().item(getStaticPolicyEnforcer(tenantId)); | ||
| } else { | ||
| return getDynamicPolicyEnforcer(routingContext, tenantId) | ||
| .onItem().ifNull().continueWith(new Supplier<PolicyEnforcer>() { | ||
| @Override | ||
| public PolicyEnforcer get() { | ||
| return getStaticPolicyEnforcer(tenantId); | ||
| } | ||
| }); | ||
| } | ||
| } | ||
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| @Override | ||
| public long getReadTimeout() { | ||
| return readTimeout; | ||
| } | ||
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| PolicyEnforcer getStaticPolicyEnforcer(String tenantId) { | ||
| return tenantId != null && namedPolicyEnforcers.containsKey(tenantId) | ||
| ? namedPolicyEnforcers.get(tenantId) | ||
| : defaultPolicyEnforcer; | ||
| } | ||
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| boolean hasDynamicPolicyEnforcers() { | ||
| return dynamicConfigResolver != null; | ||
| } | ||
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| private Uni<PolicyEnforcer> getDynamicPolicyEnforcer(RoutingContext routingContext, String tenantId) { | ||
| return dynamicConfigResolver.resolve(routingContext, tenantId, requestContext) | ||
| .onItem().ifNotNull().transform(new Function<KeycloakPolicyEnforcerTenantConfig, PolicyEnforcer>() { | ||
| @Override | ||
| public PolicyEnforcer apply(KeycloakPolicyEnforcerTenantConfig tenant) { | ||
| return createPolicyEnforcer(tenant, tlsConfigTrustAll, tenantId, oidcConfig); | ||
| } | ||
| }); | ||
| } | ||
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| private static Map<String, PolicyEnforcer> createNamedPolicyEnforcers(OidcConfig oidcConfig, | ||
| KeycloakPolicyEnforcerConfig config, boolean tlsConfigTrustAll) { | ||
| if (config.namedTenants().isEmpty()) { | ||
| return Map.of(); | ||
| } | ||
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| Map<String, PolicyEnforcer> policyEnforcerTenants = new HashMap<>(); | ||
| for (Map.Entry<String, KeycloakPolicyEnforcerTenantConfig> tenant : config.namedTenants().entrySet()) { | ||
| OidcTenantConfig oidcTenantConfig = getOidcTenantConfig(oidcConfig, tenant.getKey()); | ||
| policyEnforcerTenants.put(tenant.getKey(), | ||
| createPolicyEnforcer(oidcTenantConfig, tenant.getValue(), tlsConfigTrustAll)); | ||
| } | ||
| return Map.copyOf(policyEnforcerTenants); | ||
| } | ||
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| private static TenantPolicyConfigResolver.KeycloakRequestContext createKeycloakRequestContext( | ||
| BlockingSecurityExecutor blockingSecurityExecutor) { | ||
| return new TenantPolicyConfigResolver.KeycloakRequestContext() { | ||
| @Override | ||
| public <T> Uni<T> runBlocking(Supplier<T> function) { | ||
| return blockingSecurityExecutor.executeBlocking(function); | ||
| } | ||
| }; | ||
| } | ||
| } |
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