| /* |
| * |
| * 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. |
| * |
| */ |
| |
| #include "src/core/ext/filters/client_channel/lb_policy_registry.h" |
| |
| #include <string.h> |
| |
| #include "src/core/lib/gpr/string.h" |
| |
| #define MAX_POLICIES 10 |
| |
| static grpc_lb_policy_factory* g_all_of_the_lb_policies[MAX_POLICIES]; |
| static int g_number_of_lb_policies = 0; |
| |
| void grpc_lb_policy_registry_init(void) { g_number_of_lb_policies = 0; } |
| |
| void grpc_lb_policy_registry_shutdown(void) { |
| int i; |
| for (i = 0; i < g_number_of_lb_policies; i++) { |
| grpc_lb_policy_factory_unref(g_all_of_the_lb_policies[i]); |
| } |
| } |
| |
| void grpc_register_lb_policy(grpc_lb_policy_factory* factory) { |
| int i; |
| for (i = 0; i < g_number_of_lb_policies; i++) { |
| GPR_ASSERT(0 != gpr_stricmp(factory->vtable->name, |
| g_all_of_the_lb_policies[i]->vtable->name)); |
| } |
| GPR_ASSERT(g_number_of_lb_policies != MAX_POLICIES); |
| grpc_lb_policy_factory_ref(factory); |
| g_all_of_the_lb_policies[g_number_of_lb_policies++] = factory; |
| } |
| |
| static grpc_lb_policy_factory* lookup_factory(const char* name) { |
| int i; |
| |
| if (name == nullptr) return nullptr; |
| |
| for (i = 0; i < g_number_of_lb_policies; i++) { |
| if (0 == gpr_stricmp(name, g_all_of_the_lb_policies[i]->vtable->name)) { |
| return g_all_of_the_lb_policies[i]; |
| } |
| } |
| |
| return nullptr; |
| } |
| |
| grpc_lb_policy* grpc_lb_policy_create(const char* name, |
| grpc_lb_policy_args* args) { |
| grpc_lb_policy_factory* factory = lookup_factory(name); |
| grpc_lb_policy* lb_policy = |
| grpc_lb_policy_factory_create_lb_policy(factory, args); |
| return lb_policy; |
| } |