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/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <chrono>
#include <memory>
#include <mutex>
#include <sstream>
#include <string>
#include <thread>
#include <vector>
#include <grpc++/channel.h>
#include <grpc++/client_context.h>
#include <grpc++/server.h>
#include <grpc++/server_builder.h>
#include <grpc/grpc.h>
#include <grpc/support/alloc.h>
#include <grpc/support/host_port.h>
#include <grpc/support/log.h>
#include <grpc/support/time.h>
#include <gtest/gtest.h>
#include "src/core/lib/profiling/timers.h"
#include "src/proto/grpc/testing/services.grpc.pb.h"
#include "test/cpp/qps/client.h"
#include "test/cpp/qps/interarrival.h"
#include "test/cpp/qps/usage_timer.h"
namespace grpc {
namespace testing {
static std::unique_ptr<BenchmarkService::Stub> BenchmarkStubCreator(
std::shared_ptr<Channel> ch) {
return BenchmarkService::NewStub(ch);
}
class SynchronousClient
: public ClientImpl<BenchmarkService::Stub, SimpleRequest> {
public:
SynchronousClient(const ClientConfig& config)
: ClientImpl<BenchmarkService::Stub, SimpleRequest>(
config, BenchmarkStubCreator) {
num_threads_ =
config.outstanding_rpcs_per_channel() * config.client_channels();
responses_.resize(num_threads_);
SetupLoadTest(config, num_threads_);
}
virtual ~SynchronousClient(){};
protected:
// WaitToIssue returns false if we realize that we need to break out
bool WaitToIssue(int thread_idx) {
if (!closed_loop_) {
const gpr_timespec next_issue_time = NextIssueTime(thread_idx);
// Avoid sleeping for too long continuously because we might
// need to terminate before then. This is an issue since
// exponential distribution can occasionally produce bad outliers
while (true) {
const gpr_timespec one_sec_delay =
gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),
gpr_time_from_seconds(1, GPR_TIMESPAN));
if (gpr_time_cmp(next_issue_time, one_sec_delay) <= 0) {
gpr_sleep_until(next_issue_time);
return true;
} else {
gpr_sleep_until(one_sec_delay);
if (gpr_atm_acq_load(&thread_pool_done_) != static_cast<gpr_atm>(0)) {
return false;
}
}
}
}
return true;
}
size_t num_threads_;
std::vector<SimpleResponse> responses_;
private:
void DestroyMultithreading() override final { EndThreads(); }
};
class SynchronousUnaryClient final : public SynchronousClient {
public:
SynchronousUnaryClient(const ClientConfig& config)
: SynchronousClient(config) {
StartThreads(num_threads_);
}
~SynchronousUnaryClient() {}
bool ThreadFunc(HistogramEntry* entry, size_t thread_idx) override {
if (!WaitToIssue(thread_idx)) {
return true;
}
auto* stub = channels_[thread_idx % channels_.size()].get_stub();
double start = UsageTimer::Now();
GPR_TIMER_SCOPE("SynchronousUnaryClient::ThreadFunc", 0);
grpc::ClientContext context;
grpc::Status s =
stub->UnaryCall(&context, request_, &responses_[thread_idx]);
if (s.ok()) {
entry->set_value((UsageTimer::Now() - start) * 1e9);
}
entry->set_status(s.error_code());
return true;
}
};
class SynchronousStreamingClient final : public SynchronousClient {
public:
SynchronousStreamingClient(const ClientConfig& config)
: SynchronousClient(config),
context_(num_threads_),
stream_(num_threads_),
messages_per_stream_(config.messages_per_stream()),
messages_issued_(num_threads_) {
for (size_t thread_idx = 0; thread_idx < num_threads_; thread_idx++) {
auto* stub = channels_[thread_idx % channels_.size()].get_stub();
stream_[thread_idx] = stub->StreamingCall(&context_[thread_idx]);
messages_issued_[thread_idx] = 0;
}
StartThreads(num_threads_);
}
~SynchronousStreamingClient() {
for (size_t i = 0; i < num_threads_; i++) {
auto stream = &stream_[i];
if (*stream) {
(*stream)->WritesDone();
Status s = (*stream)->Finish();
if (!s.ok()) {
gpr_log(GPR_ERROR, "Stream %" PRIuPTR " received an error %s", i,
s.error_message().c_str());
}
}
}
}
bool ThreadFunc(HistogramEntry* entry, size_t thread_idx) override {
if (!WaitToIssue(thread_idx)) {
return true;
}
GPR_TIMER_SCOPE("SynchronousStreamingClient::ThreadFunc", 0);
double start = UsageTimer::Now();
if (stream_[thread_idx]->Write(request_) &&
stream_[thread_idx]->Read(&responses_[thread_idx])) {
entry->set_value((UsageTimer::Now() - start) * 1e9);
// don't set the status since there isn't one yet
if ((messages_per_stream_ != 0) &&
(++messages_issued_[thread_idx] < messages_per_stream_)) {
return true;
} else {
// Fall through to the below resetting code after finish
}
}
stream_[thread_idx]->WritesDone();
Status s = stream_[thread_idx]->Finish();
// don't set the value since this is either a failure (shouldn't be timed)
// or a stream-end (already has been timed)
entry->set_status(s.error_code());
if (!s.ok()) {
gpr_log(GPR_ERROR, "Stream %" PRIuPTR " received an error %s", thread_idx,
s.error_message().c_str());
}
auto* stub = channels_[thread_idx % channels_.size()].get_stub();
context_[thread_idx].~ClientContext();
new (&context_[thread_idx]) ClientContext();
stream_[thread_idx] = stub->StreamingCall(&context_[thread_idx]);
messages_issued_[thread_idx] = 0;
return true;
}
private:
// These are both conceptually std::vector but cannot be for old compilers
// that expect contained classes to support copy constructors
std::vector<grpc::ClientContext> context_;
std::vector<
std::unique_ptr<grpc::ClientReaderWriter<SimpleRequest, SimpleResponse>>>
stream_;
const int messages_per_stream_;
std::vector<int> messages_issued_;
};
std::unique_ptr<Client> CreateSynchronousUnaryClient(
const ClientConfig& config) {
return std::unique_ptr<Client>(new SynchronousUnaryClient(config));
}
std::unique_ptr<Client> CreateSynchronousStreamingClient(
const ClientConfig& config) {
return std::unique_ptr<Client>(new SynchronousStreamingClient(config));
}
} // namespace testing
} // namespace grpc
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