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/*
*
* Copyright 2017 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.
*
*/
#include <grpc/support/log.h>
#include "src/core/lib/channel/channel_args.h"
#include "src/core/lib/security/transport/lb_targets_info.h"
/* Channel arg key for the mapping of LB server addresses to their names for
* secure naming purposes. */
#define GRPC_ARG_LB_SECURE_NAMING_MAP "grpc.lb_secure_naming_map"
static void *targets_info_copy(void *p) {
return grpc_slice_hash_table_ref((grpc_slice_hash_table *)p);
}
static void targets_info_destroy(grpc_exec_ctx *exec_ctx, void *p) {
grpc_slice_hash_table_unref(exec_ctx, (grpc_slice_hash_table *)p);
}
static int targets_info_cmp(void *a, void *b) {
return grpc_slice_hash_table_cmp((const grpc_slice_hash_table *)a,
(const grpc_slice_hash_table *)b);
}
static const grpc_arg_pointer_vtable server_to_balancer_names_vtable = {
targets_info_copy, targets_info_destroy, targets_info_cmp};
grpc_arg grpc_lb_targets_info_create_channel_arg(
grpc_slice_hash_table *targets_info) {
return grpc_channel_arg_pointer_create((char *)GRPC_ARG_LB_SECURE_NAMING_MAP,
targets_info,
&server_to_balancer_names_vtable);
}
grpc_slice_hash_table *grpc_lb_targets_info_find_in_args(
const grpc_channel_args *args) {
const grpc_arg *targets_info_arg =
grpc_channel_args_find(args, GRPC_ARG_LB_SECURE_NAMING_MAP);
if (targets_info_arg != NULL) {
GPR_ASSERT(targets_info_arg->type == GRPC_ARG_POINTER);
return (grpc_slice_hash_table *)targets_info_arg->value.pointer.p;
}
return NULL;
}
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