mirror of https://github.com/grpc/grpc.git
Mark D. Roth
7 years ago
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7 changed files with 411 additions and 0 deletions
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/*
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* |
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* Copyright 2017 gRPC authors. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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*/ |
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#include <grpc/grpc.h> |
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#include <grpc/support/alloc.h> |
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#include <grpc/support/log.h> |
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#include <grpc/support/string_util.h> |
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#include <memory> |
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#include <thread> |
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#include "gtest/gtest.h" |
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#include "src/core/lib/iomgr/endpoint.h" |
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#include "src/core/lib/iomgr/error.h" |
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#include "src/core/lib/iomgr/pollset.h" |
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#include "src/core/lib/iomgr/pollset_set.h" |
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#include "src/core/lib/iomgr/resolve_address.h" |
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#include "src/core/lib/iomgr/tcp_client.h" |
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#include "src/core/lib/slice/slice_internal.h" |
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#include "test/core/util/port.h" |
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#include "test/core/util/test_config.h" |
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namespace grpc_core { |
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namespace test { |
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namespace { |
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// A gRPC server, running in its own thread.
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class ServerThread { |
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public: |
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explicit ServerThread(const char* address) : address_(address) {} |
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void Start() { |
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// Start server with 1-second handshake timeout.
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grpc_arg arg; |
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arg.type = GRPC_ARG_INTEGER; |
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arg.key = const_cast<char*>(GRPC_ARG_SERVER_HANDSHAKE_TIMEOUT_MS); |
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arg.value.integer = 1000; |
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grpc_channel_args args = {1, &arg}; |
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server_ = grpc_server_create(&args, nullptr); |
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ASSERT_TRUE(grpc_server_add_insecure_http2_port(server_, address_)); |
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cq_ = grpc_completion_queue_create_for_next(nullptr); |
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grpc_server_register_completion_queue(server_, cq_, nullptr); |
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grpc_server_start(server_); |
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thread_.reset(new std::thread(std::bind(&ServerThread::Serve, this))); |
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} |
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void Shutdown() { |
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grpc_completion_queue* shutdown_cq = |
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grpc_completion_queue_create_for_pluck(nullptr); |
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grpc_server_shutdown_and_notify(server_, shutdown_cq, nullptr); |
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GPR_ASSERT(grpc_completion_queue_pluck(shutdown_cq, nullptr, |
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grpc_timeout_seconds_to_deadline(1), |
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nullptr).type == GRPC_OP_COMPLETE); |
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grpc_completion_queue_destroy(shutdown_cq); |
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grpc_server_destroy(server_); |
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grpc_completion_queue_destroy(cq_); |
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thread_->join(); |
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} |
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private: |
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void Serve() { |
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// The completion queue should not return anything other than shutdown.
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grpc_event ev = grpc_completion_queue_next( |
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cq_, gpr_inf_future(GPR_CLOCK_MONOTONIC), nullptr); |
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ASSERT_EQ(GRPC_QUEUE_SHUTDOWN, ev.type); |
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} |
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const char* address_; // Do not own.
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grpc_server* server_ = nullptr; |
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grpc_completion_queue* cq_ = nullptr; |
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std::unique_ptr<std::thread> thread_; |
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}; |
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// A TCP client that connects to the server, reads data until the server
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// closes, and then terminates.
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class Client { |
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public: |
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explicit Client(const char* server_address) |
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: server_address_(server_address) {} |
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void Connect() { |
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grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
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grpc_resolved_addresses* server_addresses = nullptr; |
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grpc_error* error = grpc_blocking_resolve_address(server_address_, |
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"80", &server_addresses); |
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ASSERT_EQ(GRPC_ERROR_NONE, error) << grpc_error_string(error); |
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ASSERT_GE(server_addresses->naddrs, 1UL); |
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pollset_ = (grpc_pollset*)gpr_zalloc(grpc_pollset_size()); |
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grpc_pollset_init(pollset_, &mu_); |
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grpc_pollset_set* pollset_set = grpc_pollset_set_create(); |
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grpc_pollset_set_add_pollset(&exec_ctx, pollset_set, pollset_); |
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EventState state; |
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grpc_tcp_client_connect(&exec_ctx, state.closure(), &endpoint_, |
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pollset_set, nullptr /* channel_args */, |
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server_addresses->addrs, 1000); |
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ASSERT_TRUE(PollUntilDone(&exec_ctx, &state, |
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grpc_timespec_to_millis_round_up( |
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gpr_inf_future(GPR_CLOCK_MONOTONIC)))); |
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ASSERT_EQ(GRPC_ERROR_NONE, state.error()); |
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grpc_pollset_set_destroy(&exec_ctx, pollset_set); |
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grpc_endpoint_add_to_pollset(&exec_ctx, endpoint_, pollset_); |
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grpc_resolved_addresses_destroy(server_addresses); |
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grpc_exec_ctx_finish(&exec_ctx); |
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} |
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// Reads until an error is returned.
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// Returns false if no error is returned by the deadline.
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bool Read() { |
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grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
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grpc_slice_buffer read_buffer; |
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grpc_slice_buffer_init(&read_buffer); |
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bool retval = true; |
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// Use a deadline of 3 seconds, which is a lot more than we should
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// need for a 1-second timeout, but this helps avoid flakes.
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grpc_millis deadline = grpc_exec_ctx_now(&exec_ctx) + 3000; |
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while (true) { |
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EventState state; |
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grpc_endpoint_read(&exec_ctx, endpoint_, &read_buffer, state.closure()); |
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if (!PollUntilDone(&exec_ctx, &state, deadline)) { |
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retval = false; |
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break; |
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} |
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if (state.error() != GRPC_ERROR_NONE) break; |
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gpr_log(GPR_INFO, "client read %" PRIuPTR " bytes", read_buffer.length); |
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grpc_slice_buffer_reset_and_unref_internal(&exec_ctx, &read_buffer); |
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} |
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grpc_endpoint_shutdown(&exec_ctx, endpoint_, |
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GRPC_ERROR_CREATE_FROM_STATIC_STRING("shutdown")); |
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grpc_slice_buffer_destroy_internal(&exec_ctx, &read_buffer); |
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grpc_exec_ctx_finish(&exec_ctx); |
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return retval; |
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} |
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void Shutdown() { |
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grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
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grpc_endpoint_destroy(&exec_ctx, endpoint_); |
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grpc_pollset_shutdown(&exec_ctx, pollset_, |
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GRPC_CLOSURE_CREATE(&Client::PollsetDestroy, pollset_, |
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grpc_schedule_on_exec_ctx)); |
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grpc_exec_ctx_finish(&exec_ctx); |
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} |
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private: |
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// State used to wait for an I/O event.
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class EventState { |
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public: |
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EventState() { |
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GRPC_CLOSURE_INIT(&closure_, &EventState::OnEventDone, this, |
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grpc_schedule_on_exec_ctx); |
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} |
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~EventState() { GRPC_ERROR_UNREF(error_); } |
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grpc_closure* closure() { return &closure_; } |
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bool done() const { return done_; } |
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// Caller does NOT take ownership of the error.
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grpc_error* error() const { return error_; } |
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private: |
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static void OnEventDone(grpc_exec_ctx* exec_ctx, void* arg, |
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grpc_error* error) { |
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gpr_log(GPR_INFO, "OnEventDone(): %s", grpc_error_string(error)); |
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EventState* state = (EventState*)arg; |
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state->error_ = GRPC_ERROR_REF(error); |
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state->done_ = true; |
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} |
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grpc_closure closure_; |
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bool done_ = false; |
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grpc_error* error_ = GRPC_ERROR_NONE; |
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}; |
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// Returns true if done, or false if deadline exceeded.
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bool PollUntilDone(grpc_exec_ctx* exec_ctx, EventState* state, |
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grpc_millis deadline) { |
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while (true) { |
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grpc_pollset_worker* worker = nullptr; |
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gpr_mu_lock(mu_); |
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GRPC_LOG_IF_ERROR( |
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"grpc_pollset_work", |
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grpc_pollset_work(exec_ctx, pollset_, &worker, |
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grpc_exec_ctx_now(exec_ctx) + 1000)); |
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gpr_mu_unlock(mu_); |
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if (state != nullptr && state->done()) return true; |
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if (grpc_exec_ctx_now(exec_ctx) >= deadline) return false; |
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} |
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} |
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static void PollsetDestroy(grpc_exec_ctx* exec_ctx, void* arg, |
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grpc_error* error) { |
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grpc_pollset* pollset = (grpc_pollset*)arg; |
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grpc_pollset_destroy(exec_ctx, pollset); |
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gpr_free(pollset); |
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} |
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const char* server_address_; // Do not own.
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grpc_endpoint* endpoint_; |
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gpr_mu* mu_; |
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grpc_pollset* pollset_; |
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}; |
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TEST(SettingsTimeout, Basic) { |
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// Construct server address string.
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const int server_port = grpc_pick_unused_port_or_die(); |
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char* server_address_string; |
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gpr_asprintf(&server_address_string, "localhost:%d", server_port); |
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// Start server.
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gpr_log(GPR_INFO, "starting server on %s", server_address_string); |
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ServerThread server_thread(server_address_string); |
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server_thread.Start(); |
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// Create client and connect to server.
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gpr_log(GPR_INFO, "starting client connect"); |
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Client client(server_address_string); |
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client.Connect(); |
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// Client read. Should fail due to server dropping connection.
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gpr_log(GPR_INFO, "starting client read"); |
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EXPECT_TRUE(client.Read()); |
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// Shut down client.
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gpr_log(GPR_INFO, "shutting down client"); |
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client.Shutdown(); |
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// Shut down server.
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gpr_log(GPR_INFO, "shutting down server"); |
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server_thread.Shutdown(); |
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// Clean up.
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gpr_free(server_address_string); |
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} |
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} // namespace
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} // namespace test
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} // namespace grpc_core
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int main(int argc, char** argv) { |
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::testing::InitGoogleTest(&argc, argv); |
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grpc_test_init(argc, argv); |
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grpc_init(); |
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int result = RUN_ALL_TESTS(); |
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grpc_shutdown(); |
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return result; |
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} |
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