legacy-libs/grpc-cloned/deps/grpc/src/core/ext/filters/client_channel/client_channel_factory.h

   1 /*
   2  *
   3  * Copyright 2015 gRPC authors.
   4  *
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *     http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  *
  17  */
  18
  19 #ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_FACTORY_H
  20 #define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_FACTORY_H
  21
  22 #include <grpc/support/port_platform.h>
  23
  24 #include <grpc/impl/codegen/grpc_types.h>
  25
  26 #include "src/core/ext/filters/client_channel/subchannel.h"
  27 #include "src/core/lib/gprpp/abstract.h"
  28
  29 namespace grpc_core {
  30
  31 class ClientChannelFactory {
  32  public:
  33   virtual ~ClientChannelFactory() = default;
  34
  35   // Creates a subchannel with the specified args.
  36   virtual Subchannel* CreateSubchannel(const grpc_channel_args* args)
  37       GRPC_ABSTRACT;
  38
  39   // Returns a channel arg containing the specified factory.
  40   static grpc_arg CreateChannelArg(ClientChannelFactory* factory);
  41
  42   // Returns the factory from args, or null if not found.
  43   static ClientChannelFactory* GetFromChannelArgs(
  44       const grpc_channel_args* args);
  45
  46   GRPC_ABSTRACT_BASE_CLASS
  47 };
  48
  49 }  // namespace grpc_core
  50
  51 #endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_FACTORY_H */