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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.
*
*/
#include "src/core/ext/client_channel/proxy_mapper_registry.h"
#include <string.h>
#include <grpc/support/alloc.h>
//
// grpc_proxy_mapper_list
//
typedef struct {
grpc_proxy_mapper** list;
size_t num_mappers;
} grpc_proxy_mapper_list;
static void grpc_proxy_mapper_list_register(grpc_proxy_mapper_list* list,
bool at_start,
grpc_proxy_mapper* mapper) {
list->list = gpr_realloc(
list->list, (list->num_mappers + 1) * sizeof(grpc_proxy_mapper*));
if (at_start) {
memmove(list->list + 1, list->list,
sizeof(grpc_proxy_mapper*) * list->num_mappers);
list->list[0] = mapper;
} else {
list->list[list->num_mappers] = mapper;
}
++list->num_mappers;
}
static bool grpc_proxy_mapper_list_map(grpc_exec_ctx* exec_ctx,
grpc_proxy_mapper_list* list,
const grpc_resolved_address* address,
const grpc_channel_args* args,
grpc_resolved_address** new_address,
grpc_channel_args** new_args) {
for (size_t i = 0; i < list->num_mappers; ++i) {
if (grpc_proxy_mapper_map(exec_ctx, list->list[i], address, args,
new_address, new_args)) {
return true;
}
}
return false;
}
static void grpc_proxy_mapper_list_destroy(grpc_proxy_mapper_list* list) {
for (size_t i = 0; i < list->num_mappers; ++i) {
grpc_proxy_mapper_destroy(list->list[i]);
}
gpr_free(list->list);
}
//
// plugin
//
static grpc_proxy_mapper_list g_proxy_mapper_list;
void grpc_proxy_mapper_registry_init() {
memset(&g_proxy_mapper_list, 0, sizeof(g_proxy_mapper_list));
}
void grpc_proxy_mapper_registry_shutdown() {
grpc_proxy_mapper_list_destroy(&g_proxy_mapper_list);
}
void grpc_proxy_mapper_register(bool at_start, grpc_proxy_mapper* mapper) {
grpc_proxy_mapper_list_register(&g_proxy_mapper_list, at_start, mapper);
}
bool grpc_proxy_mappers_map(grpc_exec_ctx* exec_ctx,
const grpc_resolved_address* address,
const grpc_channel_args* args,
grpc_resolved_address** new_address,
grpc_channel_args** new_args) {
return grpc_proxy_mapper_list_map(exec_ctx, &g_proxy_mapper_list, address,
args, new_address, new_args);
}
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