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/*
*
* Copyright 2017, 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_FILTERS_CLIENT_CHANNEL_PROXY_MAPPER_H
#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PROXY_MAPPER_H
#include <stdbool.h>
#include <grpc/impl/codegen/grpc_types.h>
#include "src/core/lib/iomgr/resolve_address.h"
typedef struct grpc_proxy_mapper grpc_proxy_mapper;
typedef struct {
/// Determines the proxy name to resolve for \a server_uri.
/// If no proxy is needed, returns false.
/// Otherwise, sets \a name_to_resolve, optionally sets \a new_args,
/// and returns true.
bool (*map_name)(grpc_exec_ctx* exec_ctx, grpc_proxy_mapper* mapper,
const char* server_uri, const grpc_channel_args* args,
char** name_to_resolve, grpc_channel_args** new_args);
/// Determines the proxy address to use to contact \a address.
/// If no proxy is needed, returns false.
/// Otherwise, sets \a new_address, optionally sets \a new_args, and
/// returns true.
bool (*map_address)(grpc_exec_ctx* exec_ctx, grpc_proxy_mapper* mapper,
const grpc_resolved_address* address,
const grpc_channel_args* args,
grpc_resolved_address** new_address,
grpc_channel_args** new_args);
/// Destroys \a mapper.
void (*destroy)(grpc_proxy_mapper* mapper);
} grpc_proxy_mapper_vtable;
struct grpc_proxy_mapper {
const grpc_proxy_mapper_vtable* vtable;
};
void grpc_proxy_mapper_init(const grpc_proxy_mapper_vtable* vtable,
grpc_proxy_mapper* mapper);
bool grpc_proxy_mapper_map_name(grpc_exec_ctx* exec_ctx,
grpc_proxy_mapper* mapper,
const char* server_uri,
const grpc_channel_args* args,
char** name_to_resolve,
grpc_channel_args** new_args);
bool grpc_proxy_mapper_map_address(grpc_exec_ctx* exec_ctx,
grpc_proxy_mapper* mapper,
const grpc_resolved_address* address,
const grpc_channel_args* args,
grpc_resolved_address** new_address,
grpc_channel_args** new_args);
void grpc_proxy_mapper_destroy(grpc_proxy_mapper* mapper);
#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PROXY_MAPPER_H */
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