| /* |
| * |
| * 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 <grpc/support/port_platform.h> |
| |
| #include <grpc/grpc.h> |
| |
| #include <string.h> |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/string_util.h> |
| |
| #include "src/core/ext/filters/client_channel/client_channel.h" |
| #include "src/core/ext/filters/client_channel/resolver_registry.h" |
| #include "src/core/ext/transport/chttp2/client/authority.h" |
| #include "src/core/ext/transport/chttp2/client/chttp2_connector.h" |
| #include "src/core/lib/channel/channel_args.h" |
| #include "src/core/lib/surface/api_trace.h" |
| #include "src/core/lib/surface/channel.h" |
| |
| namespace grpc_core { |
| |
| class Chttp2InsecureClientChannelFactory : public ClientChannelFactory { |
| public: |
| RefCountedPtr<Subchannel> CreateSubchannel( |
| const grpc_channel_args* args) override { |
| grpc_channel_args* new_args = |
| grpc_default_authority_add_if_not_present(args); |
| RefCountedPtr<Subchannel> s = |
| Subchannel::Create(MakeOrphanable<Chttp2Connector>(), new_args); |
| grpc_channel_args_destroy(new_args); |
| return s; |
| } |
| }; |
| |
| namespace { |
| |
| grpc_channel* CreateChannel(const char* target, const grpc_channel_args* args, |
| grpc_error_handle* error) { |
| if (target == nullptr) { |
| gpr_log(GPR_ERROR, "cannot create channel with NULL target name"); |
| if (error != nullptr) { |
| *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("channel target is NULL"); |
| } |
| return nullptr; |
| } |
| // Add channel arg containing the server URI. |
| grpc_core::UniquePtr<char> canonical_target = |
| ResolverRegistry::AddDefaultPrefixIfNeeded(target); |
| grpc_arg arg = grpc_channel_arg_string_create( |
| const_cast<char*>(GRPC_ARG_SERVER_URI), canonical_target.get()); |
| const char* to_remove[] = {GRPC_ARG_SERVER_URI}; |
| grpc_channel_args* new_args = |
| grpc_channel_args_copy_and_add_and_remove(args, to_remove, 1, &arg, 1); |
| grpc_channel* channel = grpc_channel_create( |
| target, new_args, GRPC_CLIENT_CHANNEL, nullptr, nullptr, error); |
| grpc_channel_args_destroy(new_args); |
| return channel; |
| } |
| |
| } // namespace |
| |
| } // namespace grpc_core |
| |
| namespace { |
| |
| grpc_core::Chttp2InsecureClientChannelFactory* g_factory; |
| gpr_once g_factory_once = GPR_ONCE_INIT; |
| |
| void FactoryInit() { |
| g_factory = new grpc_core::Chttp2InsecureClientChannelFactory(); |
| } |
| |
| } // namespace |
| |
| /* Create a client channel: |
| Asynchronously: - resolve target |
| - connect to it (trying alternatives as presented) |
| - perform handshakes */ |
| grpc_channel* grpc_insecure_channel_create(const char* target, |
| const grpc_channel_args* args, |
| void* reserved) { |
| grpc_core::ExecCtx exec_ctx; |
| GRPC_API_TRACE( |
| "grpc_insecure_channel_create(target=%s, args=%p, reserved=%p)", 3, |
| (target, args, reserved)); |
| GPR_ASSERT(reserved == nullptr); |
| // Add channel arg containing the client channel factory. |
| gpr_once_init(&g_factory_once, FactoryInit); |
| grpc_arg arg = grpc_core::ClientChannelFactory::CreateChannelArg(g_factory); |
| const char* arg_to_remove = arg.key; |
| grpc_channel_args* new_args = grpc_channel_args_copy_and_add_and_remove( |
| args, &arg_to_remove, 1, &arg, 1); |
| grpc_error_handle error = GRPC_ERROR_NONE; |
| // Create channel. |
| grpc_channel* channel = grpc_core::CreateChannel(target, new_args, &error); |
| // Clean up. |
| grpc_channel_args_destroy(new_args); |
| if (channel == nullptr) { |
| intptr_t integer; |
| grpc_status_code status = GRPC_STATUS_INTERNAL; |
| if (grpc_error_get_int(error, GRPC_ERROR_INT_GRPC_STATUS, &integer)) { |
| status = static_cast<grpc_status_code>(integer); |
| } |
| GRPC_ERROR_UNREF(error); |
| channel = grpc_lame_client_channel_create( |
| target, status, "Failed to create client channel"); |
| } |
| return channel; |
| } |