| /* |
| * |
| * 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. |
| * |
| */ |
| |
| /******************************************************************************* |
| * This test verifies that various stack configurations result in the set of |
| * filters that we expect. |
| * |
| * This is akin to a golden-file test, and suffers the same disadvantages and |
| * advantages: it reflects that the code as written has not been modified - and |
| * valid code modifications WILL break this test and it will need updating. |
| * |
| * The intent therefore is to allow code reviewers to more easily catch changes |
| * that perturb the generated list of channel filters in different |
| * configurations and assess whether such a change is correct and desirable. |
| */ |
| |
| #include <grpc/grpc.h> |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/string_util.h> |
| #include <string.h> |
| |
| #include "src/core/lib/channel/channel_stack_builder.h" |
| #include "src/core/lib/support/string.h" |
| #include "src/core/lib/surface/channel_init.h" |
| #include "src/core/lib/surface/channel_stack_type.h" |
| #include "src/core/lib/transport/transport_impl.h" |
| #include "test/core/util/test_config.h" |
| |
| // use CHECK_STACK instead |
| static int check_stack(const char* file, int line, const char* transport_name, |
| grpc_channel_args* init_args, |
| unsigned channel_stack_type, ...); |
| |
| // arguments: const char *transport_name - the name of the transport type to |
| // simulate |
| // grpc_channel_args *init_args - channel args to pass down |
| // grpc_channel_stack_type channel_stack_type - the archetype of |
| // channel stack to create |
| // variadic arguments - the (in-order) expected list of channel |
| // filters to instantiate, terminated with NULL |
| #define CHECK_STACK(...) check_stack(__FILE__, __LINE__, __VA_ARGS__) |
| |
| int main(int argc, char** argv) { |
| grpc_test_init(argc, argv); |
| grpc_init(); |
| int errors = 0; |
| |
| // tests with a minimal stack |
| grpc_arg minimal_stack_arg; |
| minimal_stack_arg.type = GRPC_ARG_INTEGER; |
| minimal_stack_arg.key = const_cast<char*>(GRPC_ARG_MINIMAL_STACK); |
| minimal_stack_arg.value.integer = 1; |
| grpc_channel_args minimal_stack_args = {1, &minimal_stack_arg}; |
| errors += CHECK_STACK("unknown", &minimal_stack_args, |
| GRPC_CLIENT_DIRECT_CHANNEL, "connected", NULL); |
| errors += CHECK_STACK("unknown", &minimal_stack_args, GRPC_CLIENT_SUBCHANNEL, |
| "connected", NULL); |
| errors += CHECK_STACK("unknown", &minimal_stack_args, GRPC_SERVER_CHANNEL, |
| "server", "connected", NULL); |
| errors += |
| CHECK_STACK("chttp2", &minimal_stack_args, GRPC_CLIENT_DIRECT_CHANNEL, |
| "http-client", "connected", NULL); |
| errors += CHECK_STACK("chttp2", &minimal_stack_args, GRPC_CLIENT_SUBCHANNEL, |
| "http-client", "connected", NULL); |
| errors += CHECK_STACK("chttp2", &minimal_stack_args, GRPC_SERVER_CHANNEL, |
| "server", "http-server", "connected", NULL); |
| errors += CHECK_STACK(nullptr, &minimal_stack_args, GRPC_CLIENT_CHANNEL, |
| "client-channel", NULL); |
| |
| // tests with a default stack |
| errors += CHECK_STACK("unknown", nullptr, GRPC_CLIENT_DIRECT_CHANNEL, |
| "message_size", "deadline", "connected", NULL); |
| errors += CHECK_STACK("unknown", nullptr, GRPC_CLIENT_SUBCHANNEL, |
| "message_size", "connected", NULL); |
| errors += CHECK_STACK("unknown", nullptr, GRPC_SERVER_CHANNEL, "server", |
| "message_size", "deadline", "connected", NULL); |
| errors += CHECK_STACK("chttp2", nullptr, GRPC_CLIENT_DIRECT_CHANNEL, |
| "message_size", "deadline", "http-client", |
| "message_compress", "connected", NULL); |
| errors += |
| CHECK_STACK("chttp2", nullptr, GRPC_CLIENT_SUBCHANNEL, "message_size", |
| "http-client", "message_compress", "connected", NULL); |
| errors += CHECK_STACK("chttp2", nullptr, GRPC_SERVER_CHANNEL, "server", |
| "message_size", "deadline", "http-server", |
| "message_compress", "connected", NULL); |
| errors += CHECK_STACK(nullptr, nullptr, GRPC_CLIENT_CHANNEL, "client-channel", |
| NULL); |
| |
| GPR_ASSERT(errors == 0); |
| grpc_shutdown(); |
| return 0; |
| } |
| |
| /******************************************************************************* |
| * End of tests definitions, start of test infrastructure |
| */ |
| |
| static int check_stack(const char* file, int line, const char* transport_name, |
| grpc_channel_args* init_args, |
| unsigned channel_stack_type, ...) { |
| // create dummy channel stack |
| grpc_channel_stack_builder* builder = grpc_channel_stack_builder_create(); |
| grpc_transport_vtable fake_transport_vtable; |
| memset(&fake_transport_vtable, 0, sizeof(grpc_transport_vtable)); |
| fake_transport_vtable.name = transport_name; |
| grpc_transport fake_transport = {&fake_transport_vtable}; |
| grpc_channel_stack_builder_set_target(builder, "foo.test.google.fr"); |
| grpc_channel_args* channel_args = grpc_channel_args_copy(init_args); |
| if (transport_name != nullptr) { |
| grpc_channel_stack_builder_set_transport(builder, &fake_transport); |
| } |
| { |
| grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| grpc_channel_stack_builder_set_channel_arguments(&exec_ctx, builder, |
| channel_args); |
| GPR_ASSERT(grpc_channel_init_create_stack( |
| &exec_ctx, builder, (grpc_channel_stack_type)channel_stack_type)); |
| grpc_exec_ctx_finish(&exec_ctx); |
| } |
| |
| // build up our expectation list |
| gpr_strvec v; |
| gpr_strvec_init(&v); |
| va_list args; |
| va_start(args, channel_stack_type); |
| for (;;) { |
| char* a = va_arg(args, char*); |
| if (a == nullptr) break; |
| if (v.count != 0) gpr_strvec_add(&v, gpr_strdup(", ")); |
| gpr_strvec_add(&v, gpr_strdup(a)); |
| } |
| va_end(args); |
| char* expect = gpr_strvec_flatten(&v, nullptr); |
| gpr_strvec_destroy(&v); |
| |
| // build up our "got" list |
| gpr_strvec_init(&v); |
| grpc_channel_stack_builder_iterator* it = |
| grpc_channel_stack_builder_create_iterator_at_first(builder); |
| while (grpc_channel_stack_builder_move_next(it)) { |
| const char* name = grpc_channel_stack_builder_iterator_filter_name(it); |
| if (name == nullptr) continue; |
| if (v.count != 0) gpr_strvec_add(&v, gpr_strdup(", ")); |
| gpr_strvec_add(&v, gpr_strdup(name)); |
| } |
| char* got = gpr_strvec_flatten(&v, nullptr); |
| gpr_strvec_destroy(&v); |
| grpc_channel_stack_builder_iterator_destroy(it); |
| |
| // figure out result, log if there's an error |
| int result = 0; |
| if (0 != strcmp(got, expect)) { |
| gpr_strvec_init(&v); |
| gpr_strvec_add(&v, gpr_strdup("{")); |
| for (size_t i = 0; i < channel_args->num_args; i++) { |
| if (i > 0) gpr_strvec_add(&v, gpr_strdup(", ")); |
| gpr_strvec_add(&v, gpr_strdup(channel_args->args[i].key)); |
| gpr_strvec_add(&v, gpr_strdup("=")); |
| switch (channel_args->args[i].type) { |
| case GRPC_ARG_INTEGER: { |
| char* tmp; |
| gpr_asprintf(&tmp, "%d", channel_args->args[i].value.integer); |
| gpr_strvec_add(&v, tmp); |
| break; |
| } |
| case GRPC_ARG_STRING: |
| gpr_strvec_add(&v, gpr_strdup(channel_args->args[i].value.string)); |
| break; |
| case GRPC_ARG_POINTER: { |
| char* tmp; |
| gpr_asprintf(&tmp, "%p", channel_args->args[i].value.pointer.p); |
| gpr_strvec_add(&v, tmp); |
| break; |
| } |
| } |
| } |
| gpr_strvec_add(&v, gpr_strdup("}")); |
| char* args_str = gpr_strvec_flatten(&v, nullptr); |
| gpr_strvec_destroy(&v); |
| |
| gpr_log(file, line, GPR_LOG_SEVERITY_ERROR, |
| "**************************************************"); |
| gpr_log( |
| file, line, GPR_LOG_SEVERITY_ERROR, |
| "FAILED transport=%s; stack_type=%s; channel_args=%s:", transport_name, |
| grpc_channel_stack_type_string( |
| static_cast<grpc_channel_stack_type>(channel_stack_type)), |
| args_str); |
| gpr_log(file, line, GPR_LOG_SEVERITY_ERROR, "EXPECTED: %s", expect); |
| gpr_log(file, line, GPR_LOG_SEVERITY_ERROR, "GOT: %s", got); |
| result = 1; |
| |
| gpr_free(args_str); |
| } |
| |
| gpr_free(got); |
| gpr_free(expect); |
| |
| { |
| grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| grpc_channel_stack_builder_destroy(&exec_ctx, builder); |
| grpc_channel_args_destroy(&exec_ctx, channel_args); |
| grpc_exec_ctx_finish(&exec_ctx); |
| } |
| |
| return result; |
| } |