| /* |
| * |
| * Copyright 2019 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. |
| * |
| */ |
| |
| #import "GRPCCall+Interceptor.h" |
| #import "GRPCInterceptor.h" |
| |
| static id<GRPCInterceptorFactory> globalInterceptorFactory = nil; |
| static NSLock *globalInterceptorLock = nil; |
| static dispatch_once_t onceToken; |
| |
| @implementation GRPCCall2 (Interceptor) |
| |
| + (void)registerGlobalInterceptor:(id<GRPCInterceptorFactory>)interceptorFactory { |
| if (interceptorFactory == nil) { |
| return; |
| } |
| dispatch_once(&onceToken, ^{ |
| globalInterceptorLock = [[NSLock alloc] init]; |
| }); |
| [globalInterceptorLock lock]; |
| if (globalInterceptorFactory != nil) { |
| [globalInterceptorLock unlock]; |
| [NSException |
| raise:NSInternalInconsistencyException |
| format:@"Global interceptor is already registered. Only one global interceptor can be " |
| @"registered in a process."]; |
| return; |
| } |
| |
| globalInterceptorFactory = interceptorFactory; |
| [globalInterceptorLock unlock]; |
| } |
| |
| + (id<GRPCInterceptorFactory>)globalInterceptorFactory { |
| dispatch_once(&onceToken, ^{ |
| globalInterceptorLock = [[NSLock alloc] init]; |
| }); |
| id<GRPCInterceptorFactory> factory; |
| [globalInterceptorLock lock]; |
| factory = globalInterceptorFactory; |
| [globalInterceptorLock unlock]; |
| |
| return factory; |
| } |
| |
| @end |