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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.
*
*/
#ifndef TEST_QPS_CLIENT_H
#define TEST_QPS_CLIENT_H
#include "test/cpp/qps/histogram.h"
#include "test/cpp/qps/timer.h"
#include "test/cpp/qps/qpstest.grpc.pb.h"
#include <condition_variable>
#include <mutex>
namespace grpc {
namespace testing {
class Client {
public:
explicit Client(const ClientConfig& config) : timer_(new Timer) {
for (int i = 0; i < config.client_channels(); i++) {
channels_.push_back(ClientChannelInfo(
config.server_targets(i % config.server_targets_size()), config));
}
request_.set_response_type(grpc::testing::PayloadType::COMPRESSABLE);
request_.set_response_size(config.payload_size());
}
virtual ~Client() {}
ClientStats Mark() {
Histogram latencies;
std::vector<Histogram> to_merge(threads_.size());
for (size_t i = 0; i < threads_.size(); i++) {
threads_[i]->BeginSwap(&to_merge[i]);
}
std::unique_ptr<Timer> timer(new Timer);
timer_.swap(timer);
for (size_t i = 0; i < threads_.size(); i++) {
threads_[i]->EndSwap();
latencies.Merge(&to_merge[i]);
}
auto timer_result = timer->Mark();
ClientStats stats;
latencies.FillProto(stats.mutable_latencies());
stats.set_time_elapsed(timer_result.wall);
stats.set_time_system(timer_result.system);
stats.set_time_user(timer_result.user);
return stats;
}
protected:
SimpleRequest request_;
class ClientChannelInfo {
public:
ClientChannelInfo(const grpc::string& target, const ClientConfig& config)
: channel_(CreateTestChannel(target, config.enable_ssl())),
stub_(TestService::NewStub(channel_)) {}
ChannelInterface* get_channel() { return channel_.get(); }
TestService::Stub* get_stub() { return stub_.get(); }
private:
std::shared_ptr<ChannelInterface> channel_;
std::unique_ptr<TestService::Stub> stub_;
};
std::vector<ClientChannelInfo> channels_;
void StartThreads(size_t num_threads) {
for (size_t i = 0; i < num_threads; i++) {
threads_.emplace_back(new Thread(this, i));
}
}
void EndThreads() { threads_.clear(); }
virtual bool ThreadFunc(Histogram* histogram, size_t thread_idx) = 0;
private:
class Thread {
public:
Thread(Client* client, size_t idx)
: done_(false),
new_(nullptr),
impl_([this, idx, client]() {
for (;;) {
// run the loop body
bool thread_still_ok = client->ThreadFunc(&histogram_, idx);
// lock, see if we're done
std::lock_guard<std::mutex> g(mu_);
if (!thread_still_ok) {
gpr_log(GPR_ERROR, "Finishing client thread due to RPC error");
done_ = true;
}
if (done_) {return;}
// check if we're marking, swap out the histogram if so
if (new_) {
new_->Swap(&histogram_);
new_ = nullptr;
cv_.notify_one();
}
}
}) {}
~Thread() {
{
std::lock_guard<std::mutex> g(mu_);
done_ = true;
}
impl_.join();
}
void BeginSwap(Histogram* n) {
std::lock_guard<std::mutex> g(mu_);
new_ = n;
}
void EndSwap() {
std::unique_lock<std::mutex> g(mu_);
cv_.wait(g, [this]() { return new_ == nullptr; });
}
private:
Thread(const Thread&);
Thread& operator=(const Thread&);
TestService::Stub* stub_;
ClientConfig config_;
std::mutex mu_;
std::condition_variable cv_;
bool done_;
Histogram* new_;
Histogram histogram_;
std::thread impl_;
};
std::vector<std::unique_ptr<Thread>> threads_;
std::unique_ptr<Timer> timer_;
};
std::unique_ptr<Client>
CreateSynchronousUnaryClient(const ClientConfig& args);
std::unique_ptr<Client>
CreateSynchronousStreamingClient(const ClientConfig& args);
std::unique_ptr<Client> CreateAsyncUnaryClient(const ClientConfig& args);
std::unique_ptr<Client> CreateAsyncStreamingClient(const ClientConfig& args);
} // namespace testing
} // namespace grpc
#endif
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