/*
 * Copyright (c) 2019, 2020 Oracle and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.helidon.microprofile.grpc.server;

import io.helidon.grpc.server.ServiceDescriptor;

/**
 * A class that may apply modifications to a {@link ServiceDescriptor.Builder}
 * for an annotated gRPC service class.
 * <p>
 * Implementations of this class are called by the {@link GrpcServiceBuilder} when
 * it builds a {@link ServiceDescriptor} from an annotated class. Instances of
 * {@link AnnotatedServiceConfigurer} are discovered using the
 * {@link io.helidon.common.serviceloader.HelidonServiceLoader}. This service
 * loader supports ordering of configurers.
 */
@FunctionalInterface
public interface AnnotatedServiceConfigurer {
    /**
     * Apply modifications to a {@link ServiceDescriptor.Builder}.
     * @param serviceClass the annotated gRPC service class
     * @param annotatedClass the  class with the {@link io.helidon.microprofile.grpc.core.Grpc} annotation
     * @param builder      the builder to modify
     */
    void accept(Class<?> serviceClass, Class<?> annotatedClass, ServiceDescriptor.Builder builder);
}
