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/*
*
* 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.
*
*/
#include <thread>
#include <grpcpp/impl/codegen/config.h>
#include <grpcpp/server.h>
#include <grpcpp/server_builder.h>
#include <grpcpp/create_channel.h>
#include <grpcpp/security/credentials.h>
#include <grpc/support/log.h>
#include "src/proto/grpc/testing/echo.grpc.pb.h"
#include "test/core/util/port.h"
#include <gtest/gtest.h>
namespace grpc {
namespace {
TEST(ServerRequestCallTest, ShortDeadlineDoesNotCauseOkayFalse) {
std::mutex mu;
bool shutting_down = false;
// grpc server config.
std::ostringstream s;
int p = grpc_pick_unused_port_or_die();
s << "[::1]:" << p;
const string address = s.str();
testing::EchoTestService::AsyncService service;
ServerBuilder builder;
builder.AddListeningPort(address, InsecureServerCredentials());
auto cq = builder.AddCompletionQueue();
builder.RegisterService(&service);
auto server = builder.BuildAndStart();
// server thread.
std::thread t([address, &service, &cq, &mu, &shutting_down] {
for (int n = 0; true; n++) {
ServerContext ctx;
testing::EchoRequest req;
ServerAsyncResponseWriter<testing::EchoResponse> responder(&ctx);
// if shutting down, don't enqueue a new request.
{
std::lock_guard<std::mutex> lock(mu);
if (!shutting_down) {
service.RequestEcho(&ctx, &req, &responder, cq.get(), cq.get(),
(void*)1);
}
}
bool ok;
void* tag;
if (!cq->Next(&tag, &ok)) {
break;
}
EXPECT_EQ((void*)1, tag);
// If not shutting down, ok must be true for new requests.
{
std::lock_guard<std::mutex> lock(mu);
if (!shutting_down && !ok) {
gpr_log(GPR_INFO, "!ok on request %d", n);
abort();
}
if (shutting_down && !ok) {
// Failed connection due to shutdown, continue flushing the CQ.
continue;
}
}
// Send a simple response after a small delay that would ensure the client
// deadline is exceeded.
gpr_log(GPR_INFO, "Got request %d", n);
testing::EchoResponse response;
response.set_message("foobar");
// A bit of sleep to make sure the deadline elapses.
gpr_sleep_until(gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),
gpr_time_from_millis(50, GPR_TIMESPAN)));
{
std::lock_guard<std::mutex> lock(mu);
if (shutting_down) {
gpr_log(GPR_INFO,
"shut down while processing call, not calling Finish()");
// Continue flushing the CQ.
continue;
}
gpr_log(GPR_INFO, "Finishing request %d", n);
responder.Finish(response, grpc::Status::OK, (void*)2);
if (!cq->Next(&tag, &ok)) {
break;
}
EXPECT_EQ((void*)2, tag);
}
}
});
auto stub = testing::EchoTestService::NewStub(
CreateChannel(address, InsecureChannelCredentials()));
for (int i = 0; i < 100; i++) {
gpr_log(GPR_INFO, "Sending %d.", i);
testing::EchoRequest request;
/////////
// Comment out the following line to get ok=false due to invalid request.
// Otherwise, ok=false due to deadline being exceeded.
/////////
request.set_message("foobar");
// A simple request with a short deadline. The server will always exceed the
// deadline, whether due to the sleep or because the server was unable to
// even fetch the request from the CQ before the deadline elapsed.
testing::EchoResponse response;
::grpc::ClientContext ctx;
ctx.set_fail_fast(false);
ctx.set_deadline(std::chrono::system_clock::now() +
std::chrono::milliseconds(1));
grpc::Status status = stub->Echo(&ctx, request, &response);
EXPECT_EQ(DEADLINE_EXCEEDED, status.error_code());
gpr_log(GPR_INFO, "Success.");
}
gpr_log(GPR_INFO, "Done sending RPCs.");
// Shut down everything properly.
gpr_log(GPR_INFO, "Shutting down.");
{
std::lock_guard<std::mutex> lock(mu);
shutting_down = true;
}
server->Shutdown();
cq->Shutdown();
server->Wait();
t.join();
}
} // namespace
} // namespace grpc
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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