| /* |
| * |
| * 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/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/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" |
| |
| static void client_channel_factory_ref( |
| grpc_client_channel_factory *cc_factory) {} |
| |
| static void client_channel_factory_unref( |
| grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory) {} |
| |
| static grpc_subchannel *client_channel_factory_create_subchannel( |
| grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory, |
| const grpc_subchannel_args *args) { |
| grpc_connector *connector = grpc_chttp2_connector_create(); |
| grpc_subchannel *s = grpc_subchannel_create(exec_ctx, connector, args); |
| grpc_connector_unref(exec_ctx, connector); |
| return s; |
| } |
| |
| static grpc_channel *client_channel_factory_create_channel( |
| grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory, |
| const char *target, grpc_client_channel_type type, |
| const grpc_channel_args *args) { |
| if (target == NULL) { |
| gpr_log(GPR_ERROR, "cannot create channel with NULL target name"); |
| return NULL; |
| } |
| // Add channel arg containing the server URI. |
| grpc_arg arg = grpc_channel_arg_string_create( |
| (char *)GRPC_ARG_SERVER_URI, |
| grpc_resolver_factory_add_default_prefix_if_needed(exec_ctx, target)); |
| 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); |
| gpr_free(arg.value.string); |
| grpc_channel *channel = grpc_channel_create(exec_ctx, target, new_args, |
| GRPC_CLIENT_CHANNEL, NULL); |
| grpc_channel_args_destroy(exec_ctx, new_args); |
| return channel; |
| } |
| |
| static const grpc_client_channel_factory_vtable client_channel_factory_vtable = |
| {client_channel_factory_ref, client_channel_factory_unref, |
| client_channel_factory_create_subchannel, |
| client_channel_factory_create_channel}; |
| |
| static grpc_client_channel_factory client_channel_factory = { |
| &client_channel_factory_vtable}; |
| |
| /* 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_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| GRPC_API_TRACE( |
| "grpc_insecure_channel_create(target=%s, args=%p, reserved=%p)", 3, |
| (target, args, reserved)); |
| GPR_ASSERT(reserved == NULL); |
| // Add channel arg containing the client channel factory. |
| grpc_arg arg = |
| grpc_client_channel_factory_create_channel_arg(&client_channel_factory); |
| grpc_channel_args *new_args = grpc_channel_args_copy_and_add(args, &arg, 1); |
| // Create channel. |
| grpc_channel *channel = client_channel_factory_create_channel( |
| &exec_ctx, &client_channel_factory, target, |
| GRPC_CLIENT_CHANNEL_TYPE_REGULAR, new_args); |
| // Clean up. |
| grpc_channel_args_destroy(&exec_ctx, new_args); |
| grpc_exec_ctx_finish(&exec_ctx); |
| return channel != NULL ? channel : grpc_lame_client_channel_create( |
| target, GRPC_STATUS_INTERNAL, |
| "Failed to create client channel"); |
| } |