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/*
*
* Copyright 2015 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.
*
*/
#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_FACTORY_H
#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_FACTORY_H
#include <grpc/support/port_platform.h>
#include <grpc/impl/codegen/grpc_types.h>
#include "src/core/ext/filters/client_channel/subchannel.h"
#include "src/core/lib/channel/channel_stack.h"
// Channel arg key for client channel factory.
#define GRPC_ARG_CLIENT_CHANNEL_FACTORY "grpc.client_channel_factory"
typedef struct grpc_client_channel_factory grpc_client_channel_factory;
typedef struct grpc_client_channel_factory_vtable
grpc_client_channel_factory_vtable;
typedef enum {
GRPC_CLIENT_CHANNEL_TYPE_REGULAR, /** for the user-level regular calls */
GRPC_CLIENT_CHANNEL_TYPE_LOAD_BALANCING, /** for communication with a load
balancing service */
} grpc_client_channel_type;
/** Constructor for new configured channels.
Creating decorators around this type is encouraged to adapt behavior. */
struct grpc_client_channel_factory {
const grpc_client_channel_factory_vtable* vtable;
};
struct grpc_client_channel_factory_vtable {
void (*ref)(grpc_client_channel_factory* factory);
void (*unref)(grpc_client_channel_factory* factory);
grpc_subchannel* (*create_subchannel)(grpc_client_channel_factory* factory,
const grpc_channel_args* args);
grpc_channel* (*create_client_channel)(grpc_client_channel_factory* factory,
const char* target,
grpc_client_channel_type type,
const grpc_channel_args* args);
};
void grpc_client_channel_factory_ref(grpc_client_channel_factory* factory);
void grpc_client_channel_factory_unref(grpc_client_channel_factory* factory);
/** Create a new grpc_subchannel */
grpc_subchannel* grpc_client_channel_factory_create_subchannel(
grpc_client_channel_factory* factory, const grpc_channel_args* args);
/** Create a new grpc_channel */
grpc_channel* grpc_client_channel_factory_create_channel(
grpc_client_channel_factory* factory, const char* target,
grpc_client_channel_type type, const grpc_channel_args* args);
grpc_arg grpc_client_channel_factory_create_channel_arg(
grpc_client_channel_factory* factory);
#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_FACTORY_H */
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