/*

* Copyright 2014 The gRPC Authors

*

* 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.grpc;

import java.util.Collections;

import java.util.List;

import javax.annotation.Nullable;

import javax.annotation.concurrent.ThreadSafe;

/**

* Registry of services and their methods used by servers to dispatching incoming calls.

*/

@ThreadSafe

public abstract class HandlerRegistry {

/**

* Returns the {@link ServerServiceDefinition}s provided by the registry, or an empty list if not

* supported by the implementation.

*/

@ExperimentalApi("https://github.com/grpc/grpc-java/issues/2222")

public List<ServerServiceDefinition> getServices() {

return Collections.emptyList();

}

/**

* Lookup a {@link ServerMethodDefinition} by its fully-qualified name.

*

* @param methodName to lookup {@link ServerMethodDefinition} for.

* @param authority the authority for the desired method (to do virtual hosting). If {@code null}

* the first matching method will be returned.

* @return the resolved method or {@code null} if no method for that name exists.

*/

@Nullable

public abstract ServerMethodDefinition<?, ?> lookupMethod(

String methodName, @Nullable String authority);

/**

* Lookup a {@link ServerMethodDefinition} by its fully-qualified name.

*

* @param methodName to lookup {@link ServerMethodDefinition} for.

* @return the resolved method or {@code null} if no method for that name exists.

*/

@Nullable

public final ServerMethodDefinition<?, ?> lookupMethod(String methodName) {

return lookupMethod(methodName, null);

}

}