1 /* 2 * Copyright 2014 The gRPC Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package io.grpc; 18 19 import java.util.Collections; 20 import java.util.List; 21 import javax.annotation.Nullable; 22 import javax.annotation.concurrent.ThreadSafe; 23 24 /** 25 * Registry of services and their methods used by servers to dispatching incoming calls. 26 */ 27 @ThreadSafe 28 public abstract class HandlerRegistry { 29 30 /** 31 * Returns the {@link ServerServiceDefinition}s provided by the registry, or an empty list if not 32 * supported by the implementation. 33 */ 34 @ExperimentalApi("https://github.com/grpc/grpc-java/issues/2222") getServices()35 public List<ServerServiceDefinition> getServices() { 36 return Collections.emptyList(); 37 } 38 39 /** 40 * Lookup a {@link ServerMethodDefinition} by its fully-qualified name. 41 * 42 * @param methodName to lookup {@link ServerMethodDefinition} for. 43 * @param authority the authority for the desired method (to do virtual hosting). If {@code null} 44 * the first matching method will be returned. 45 * @return the resolved method or {@code null} if no method for that name exists. 46 */ 47 @Nullable lookupMethod( String methodName, @Nullable String authority)48 public abstract ServerMethodDefinition<?, ?> lookupMethod( 49 String methodName, @Nullable String authority); 50 51 /** 52 * Lookup a {@link ServerMethodDefinition} by its fully-qualified name. 53 * 54 * @param methodName to lookup {@link ServerMethodDefinition} for. 55 * @return the resolved method or {@code null} if no method for that name exists. 56 */ 57 @Nullable lookupMethod(String methodName)58 public final ServerMethodDefinition<?, ?> lookupMethod(String methodName) { 59 return lookupMethod(methodName, null); 60 } 61 62 } 63