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/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef GRPC_CORE_EXT_CLIENT_CHANNEL_CLIENT_CHANNEL_FACTORY_H
#define GRPC_CORE_EXT_CLIENT_CHANNEL_CLIENT_CHANNEL_FACTORY_H
#include <grpc/impl/codegen/grpc_types.h>
#include "src/core/ext/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_exec_ctx *exec_ctx, grpc_client_channel_factory *factory);
grpc_subchannel *(*create_subchannel)(grpc_exec_ctx *exec_ctx,
grpc_client_channel_factory *factory,
const grpc_subchannel_args *args);
grpc_channel *(*create_client_channel)(grpc_exec_ctx *exec_ctx,
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_exec_ctx *exec_ctx,
grpc_client_channel_factory *factory);
/** Create a new grpc_subchannel */
grpc_subchannel *grpc_client_channel_factory_create_subchannel(
grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *factory,
const grpc_subchannel_args *args);
/** Create a new grpc_channel */
grpc_channel *grpc_client_channel_factory_create_channel(
grpc_exec_ctx *exec_ctx, 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_CLIENT_CHANNEL_CLIENT_CHANNEL_FACTORY_H */
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