// // // 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 #include #include #include #include #include "src/core/lib/channel/channel_args.h" #include "src/core/lib/gprpp/thd.h" #include "src/core/lib/gprpp/time.h" #include "test/core/end2end/cq_verifier.h" #include "test/core/end2end/end2end_tests.h" #include "test/core/util/test_config.h" static void* tag(intptr_t t) { return reinterpret_cast(t); } typedef struct { gpr_event started; grpc_channel* channel; grpc_completion_queue* cq; } child_events; struct CallbackContext { grpc_completion_queue_functor functor; gpr_event finished; explicit CallbackContext(void (*cb)(grpc_completion_queue_functor* functor, int success)) { functor.functor_run = cb; functor.inlineable = false; gpr_event_init(&finished); } }; static void child_thread(void* arg) { child_events* ce = static_cast(arg); grpc_event ev; gpr_event_set(&ce->started, reinterpret_cast(1)); gpr_log(GPR_DEBUG, "verifying"); ev = grpc_completion_queue_next(ce->cq, gpr_inf_future(GPR_CLOCK_MONOTONIC), nullptr); GPR_ASSERT(ev.type == GRPC_OP_COMPLETE); GPR_ASSERT(ev.tag == tag(1)); GPR_ASSERT(ev.success == 0); } static void test_connectivity(grpc_end2end_test_config config) { grpc_end2end_test_fixture f = config.create_fixture(nullptr, nullptr); grpc_connectivity_state state; grpc_core::CqVerifier cqv(f.cq); child_events ce; auto client_args = grpc_core::ChannelArgs() .Set(GRPC_ARG_INITIAL_RECONNECT_BACKOFF_MS, 1000) .Set(GRPC_ARG_MAX_RECONNECT_BACKOFF_MS, 1000) .Set(GRPC_ARG_MIN_RECONNECT_BACKOFF_MS, 5000) .ToC(); config.init_client(&f, client_args.get()); ce.channel = f.client; ce.cq = f.cq; gpr_event_init(&ce.started); grpc_core::Thread thd("grpc_connectivity", child_thread, &ce); thd.Start(); gpr_event_wait(&ce.started, gpr_inf_future(GPR_CLOCK_MONOTONIC)); // channels should start life in IDLE, and stay there GPR_ASSERT(grpc_channel_check_connectivity_state(f.client, 0) == GRPC_CHANNEL_IDLE); gpr_sleep_until(grpc_timeout_milliseconds_to_deadline(100)); GPR_ASSERT(grpc_channel_check_connectivity_state(f.client, 0) == GRPC_CHANNEL_IDLE); // start watching for a change gpr_log(GPR_DEBUG, "watching"); grpc_channel_watch_connectivity_state( f.client, GRPC_CHANNEL_IDLE, gpr_now(GPR_CLOCK_MONOTONIC), f.cq, tag(1)); // eventually the child thread completion should trigger thd.Join(); // check that we're still in idle, and start connecting GPR_ASSERT(grpc_channel_check_connectivity_state(f.client, 1) == GRPC_CHANNEL_IDLE); // start watching for a change grpc_channel_watch_connectivity_state(f.client, GRPC_CHANNEL_IDLE, grpc_timeout_seconds_to_deadline(10), f.cq, tag(2)); // and now the watch should trigger cqv.Expect(tag(2), true); cqv.Verify(); state = grpc_channel_check_connectivity_state(f.client, 0); GPR_ASSERT(state == GRPC_CHANNEL_TRANSIENT_FAILURE || state == GRPC_CHANNEL_CONNECTING); // quickly followed by a transition to TRANSIENT_FAILURE grpc_channel_watch_connectivity_state(f.client, GRPC_CHANNEL_CONNECTING, grpc_timeout_seconds_to_deadline(10), f.cq, tag(3)); cqv.Expect(tag(3), true); cqv.Verify(); state = grpc_channel_check_connectivity_state(f.client, 0); GPR_ASSERT(state == GRPC_CHANNEL_TRANSIENT_FAILURE || state == GRPC_CHANNEL_CONNECTING); gpr_log(GPR_DEBUG, "*** STARTING SERVER ***"); // now let's bring up a server to connect to config.init_server(&f, nullptr); gpr_log(GPR_DEBUG, "*** STARTED SERVER ***"); // we'll go through some set of transitions (some might be missed), until // READY is reached while (state != GRPC_CHANNEL_READY) { grpc_channel_watch_connectivity_state( f.client, state, grpc_timeout_seconds_to_deadline(10), f.cq, tag(4)); cqv.Expect(tag(4), true); cqv.Verify(grpc_core::Duration::Seconds(20)); state = grpc_channel_check_connectivity_state(f.client, 0); GPR_ASSERT(state == GRPC_CHANNEL_READY || state == GRPC_CHANNEL_CONNECTING || state == GRPC_CHANNEL_TRANSIENT_FAILURE); } // bring down the server again // we should go immediately to TRANSIENT_FAILURE gpr_log(GPR_DEBUG, "*** SHUTTING DOWN SERVER ***"); grpc_channel_watch_connectivity_state(f.client, GRPC_CHANNEL_READY, grpc_timeout_seconds_to_deadline(10), f.cq, tag(5)); grpc_server_shutdown_and_notify(f.server, f.cq, tag(0xdead)); cqv.Expect(tag(5), true); cqv.Expect(tag(0xdead), true); cqv.Verify(); state = grpc_channel_check_connectivity_state(f.client, 0); GPR_ASSERT(state == GRPC_CHANNEL_TRANSIENT_FAILURE || state == GRPC_CHANNEL_CONNECTING || state == GRPC_CHANNEL_IDLE); // cleanup server grpc_server_destroy(f.server); gpr_log(GPR_DEBUG, "*** SHUTDOWN SERVER ***"); grpc_channel_destroy(f.client); grpc_completion_queue_shutdown(f.cq); grpc_completion_queue_destroy(f.cq); config.tear_down_data(&f); } static void cb_watch_connectivity(grpc_completion_queue_functor* functor, int success) { CallbackContext* cb_ctx = reinterpret_cast(functor); gpr_log(GPR_DEBUG, "cb_watch_connectivity called, verifying"); // callback must not have errors GPR_ASSERT(success != 0); gpr_event_set(&cb_ctx->finished, reinterpret_cast(1)); } static void cb_shutdown(grpc_completion_queue_functor* functor, int /*success*/) { CallbackContext* cb_ctx = reinterpret_cast(functor); gpr_log(GPR_DEBUG, "cb_shutdown called, nothing to do"); gpr_event_set(&cb_ctx->finished, reinterpret_cast(1)); } static void test_watch_connectivity_cq_callback( grpc_end2end_test_config config) { CallbackContext cb_ctx(cb_watch_connectivity); CallbackContext cb_shutdown_ctx(cb_shutdown); grpc_completion_queue* cq; grpc_end2end_test_fixture f = config.create_fixture(nullptr, nullptr); config.init_client(&f, nullptr); // start connecting grpc_channel_check_connectivity_state(f.client, 1); // create the cq callback cq = grpc_completion_queue_create_for_callback(&cb_shutdown_ctx.functor, nullptr); // start watching for any change, cb is immediately called // and no dead lock should be raised grpc_channel_watch_connectivity_state(f.client, GRPC_CHANNEL_IDLE, grpc_timeout_seconds_to_deadline(3), cq, &cb_ctx.functor); // we just check that the callback was executed once notifying a connection // transition GPR_ASSERT(gpr_event_wait(&cb_ctx.finished, gpr_inf_future(GPR_CLOCK_MONOTONIC)) != nullptr); // shutdown, since shutdown cb might be executed in a background thread // we actively wait till is executed. grpc_completion_queue_shutdown(cq); gpr_event_wait(&cb_shutdown_ctx.finished, gpr_inf_future(GPR_CLOCK_MONOTONIC)); // cleanup grpc_channel_destroy(f.client); grpc_completion_queue_destroy(cq); // cq is not used in this test grpc_completion_queue_destroy(f.cq); config.tear_down_data(&f); } void connectivity(grpc_end2end_test_config config) { GPR_ASSERT(config.feature_mask & FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION); test_connectivity(config); test_watch_connectivity_cq_callback(config); } void connectivity_pre_init(void) {}