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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,
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <forward_list>
#include <functional>
#include <list>
#include <memory>
#include <mutex>
#include <sstream>
#include <string>
#include <thread>
#include <vector>
#include <grpc++/alarm.h>
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#include <grpc++/channel.h>
#include <grpc++/client_context.h>
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#include <grpc++/generic/generic_stub.h>
#include <grpc/grpc.h>
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#include <grpc/support/cpu.h>
#include <grpc/support/log.h>
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#include "src/proto/grpc/testing/services.grpc.pb.h"
#include "test/cpp/qps/client.h"
#include "test/cpp/qps/usage_timer.h"
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#include "test/cpp/util/create_test_channel.h"
namespace grpc {
namespace testing {
class ClientRpcContext {
public:
ClientRpcContext() {}
virtual ~ClientRpcContext() {}
// next state, return false if done. Collect stats when appropriate
virtual bool RunNextState(bool, HistogramEntry* entry) = 0;
virtual ClientRpcContext* StartNewClone() = 0;
static void* tag(ClientRpcContext* c) { return reinterpret_cast<void*>(c); }
static ClientRpcContext* detag(void* t) {
return reinterpret_cast<ClientRpcContext*>(t);
}
virtual void Start(CompletionQueue* cq) = 0;
};
template <class RequestType, class ResponseType>
class ClientRpcContextUnaryImpl : public ClientRpcContext {
public:
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ClientRpcContextUnaryImpl(
BenchmarkService::Stub* stub, const RequestType& req,
std::function<gpr_timespec()> next_issue,
std::function<
std::unique_ptr<grpc::ClientAsyncResponseReader<ResponseType>>(
BenchmarkService::Stub*, grpc::ClientContext*, const RequestType&,
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CompletionQueue*)>
start_req,
std::function<void(grpc::Status, ResponseType*)> on_done)
: context_(),
stub_(stub),
cq_(nullptr),
req_(req),
response_(),
next_state_(State::READY),
callback_(on_done),
next_issue_(next_issue),
start_req_(start_req) {}
~ClientRpcContextUnaryImpl() GRPC_OVERRIDE {}
void Start(CompletionQueue* cq) GRPC_OVERRIDE {
cq_ = cq;
if (!next_issue_) { // ready to issue
RunNextState(true, nullptr);
} else { // wait for the issue time
alarm_.reset(new Alarm(cq_, next_issue_(), ClientRpcContext::tag(this)));
}
}
bool RunNextState(bool ok, HistogramEntry* entry) GRPC_OVERRIDE {
switch (next_state_) {
case State::READY:
start_ = UsageTimer::Now();
response_reader_ = start_req_(stub_, &context_, req_, cq_);
response_reader_->Finish(&response_, &status_,
ClientRpcContext::tag(this));
next_state_ = State::RESP_DONE;
return true;
case State::RESP_DONE:
entry->set_value((UsageTimer::Now() - start_) * 1e9);
callback_(status_, &response_);
next_state_ = State::INVALID;
return false;
default:
GPR_ASSERT(false);
return false;
}
}
ClientRpcContext* StartNewClone() GRPC_OVERRIDE {
return new ClientRpcContextUnaryImpl(stub_, req_, next_issue_, start_req_,
callback_);
}
private:
grpc::ClientContext context_;
BenchmarkService::Stub* stub_;
CompletionQueue* cq_;
std::unique_ptr<Alarm> alarm_;
RequestType req_;
ResponseType response_;
enum State { INVALID, READY, RESP_DONE };
State next_state_;
std::function<void(grpc::Status, ResponseType*)> callback_;
std::function<gpr_timespec()> next_issue_;
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std::function<std::unique_ptr<grpc::ClientAsyncResponseReader<ResponseType>>(
BenchmarkService::Stub*, grpc::ClientContext*, const RequestType&,
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CompletionQueue*)>
start_req_;
grpc::Status status_;
double start_;
std::unique_ptr<grpc::ClientAsyncResponseReader<ResponseType>>
response_reader_;
};
typedef std::forward_list<ClientRpcContext*> context_list;
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template <class StubType, class RequestType>
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class AsyncClient : public ClientImpl<StubType, RequestType> {
// Specify which protected members we are using since there is no
// member name resolution until the template types are fully resolved
public:
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using Client::SetupLoadTest;
using Client::closed_loop_;
using Client::NextIssuer;
using ClientImpl<StubType, RequestType>::cores_;
using ClientImpl<StubType, RequestType>::channels_;
using ClientImpl<StubType, RequestType>::request_;
AsyncClient(const ClientConfig& config,
std::function<ClientRpcContext*(
StubType*, std::function<gpr_timespec()> next_issue,
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const RequestType&)>
setup_ctx,
std::function<std::unique_ptr<StubType>(std::shared_ptr<Channel>)>
create_stub)
: ClientImpl<StubType, RequestType>(config, create_stub),
num_async_threads_(NumThreads(config)) {
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SetupLoadTest(config, num_async_threads_);
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for (int i = 0; i < num_async_threads_; i++) {
cli_cqs_.emplace_back(new CompletionQueue);
next_issuers_.emplace_back(NextIssuer(i));
shutdown_state_.emplace_back(new PerThreadShutdownState());
}
using namespace std::placeholders;
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int t = 0;
for (int ch = 0; ch < config.client_channels(); ch++) {
for (int i = 0; i < config.outstanding_rpcs_per_channel(); i++) {
auto* cq = cli_cqs_[t].get();
auto ctx =
setup_ctx(channels_[ch].get_stub(), next_issuers_[t], request_);
ctx->Start(cq);
}
t = (t + 1) % cli_cqs_.size();
}
}
virtual ~AsyncClient() {
for (auto cq = cli_cqs_.begin(); cq != cli_cqs_.end(); cq++) {
void* got_tag;
bool ok;
while ((*cq)->Next(&got_tag, &ok)) {
delete ClientRpcContext::detag(got_tag);
}
}
}
protected:
const int num_async_threads_;
private:
struct PerThreadShutdownState {
mutable std::mutex mutex;
bool shutdown;
PerThreadShutdownState() : shutdown(false) {}
};
int NumThreads(const ClientConfig& config) {
int num_threads = config.async_client_threads();
if (num_threads <= 0) { // Use dynamic sizing
num_threads = cores_;
gpr_log(GPR_INFO, "Sizing async client to %d threads", num_threads);
}
return num_threads;
}
void DestroyMultithreading() GRPC_OVERRIDE GRPC_FINAL {
for (auto ss = shutdown_state_.begin(); ss != shutdown_state_.end(); ++ss) {
std::lock_guard<std::mutex> lock((*ss)->mutex);
(*ss)->shutdown = true;
}
for (auto cq = cli_cqs_.begin(); cq != cli_cqs_.end(); cq++) {
(*cq)->Shutdown();
}
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this->EndThreads(); // this needed for resolution
}
bool ThreadFunc(HistogramEntry* entry,
size_t thread_idx) GRPC_OVERRIDE GRPC_FINAL {
void* got_tag;
bool ok;
switch (cli_cqs_[thread_idx]->AsyncNext(
&got_tag, &ok,
std::chrono::system_clock::now() + std::chrono::milliseconds(10))) {
case CompletionQueue::GOT_EVENT: {
// Got a regular event, so process it
ClientRpcContext* ctx = ClientRpcContext::detag(got_tag);
// Proceed while holding a lock to make sure that
// this thread isn't supposed to shut down
std::lock_guard<std::mutex> l(shutdown_state_[thread_idx]->mutex);
if (shutdown_state_[thread_idx]->shutdown) {
delete ctx;
return true;
} else if (!ctx->RunNextState(ok, entry)) {
// The RPC and callback are done, so clone the ctx
// and kickstart the new one
auto clone = ctx->StartNewClone();
clone->Start(cli_cqs_[thread_idx].get());
// delete the old version
delete ctx;
}
return true;
}
case CompletionQueue::TIMEOUT: {
std::lock_guard<std::mutex> l(shutdown_state_[thread_idx]->mutex);
if (shutdown_state_[thread_idx]->shutdown) {
return true;
}
return true;
}
case CompletionQueue::SHUTDOWN: // queue is shutting down, so we must be
// done
return true;
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}
GPR_UNREACHABLE_CODE(return true);
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}
std::vector<std::unique_ptr<CompletionQueue>> cli_cqs_;
std::vector<std::function<gpr_timespec()>> next_issuers_;
std::vector<std::unique_ptr<PerThreadShutdownState>> shutdown_state_;
};
static std::unique_ptr<BenchmarkService::Stub> BenchmarkStubCreator(
std::shared_ptr<Channel> ch) {
return BenchmarkService::NewStub(ch);
}
class AsyncUnaryClient GRPC_FINAL
: public AsyncClient<BenchmarkService::Stub, SimpleRequest> {
public:
explicit AsyncUnaryClient(const ClientConfig& config)
: AsyncClient<BenchmarkService::Stub, SimpleRequest>(
config, SetupCtx, BenchmarkStubCreator) {
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StartThreads(num_async_threads_);
}
~AsyncUnaryClient() GRPC_OVERRIDE {}
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private:
static void CheckDone(grpc::Status s, SimpleResponse* response) {}
static std::unique_ptr<grpc::ClientAsyncResponseReader<SimpleResponse>>
StartReq(BenchmarkService::Stub* stub, grpc::ClientContext* ctx,
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const SimpleRequest& request, CompletionQueue* cq) {
return stub->AsyncUnaryCall(ctx, request, cq);
};
static ClientRpcContext* SetupCtx(BenchmarkService::Stub* stub,
std::function<gpr_timespec()> next_issue,
const SimpleRequest& req) {
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return new ClientRpcContextUnaryImpl<SimpleRequest, SimpleResponse>(
stub, req, next_issue, AsyncUnaryClient::StartReq,
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AsyncUnaryClient::CheckDone);
}
};
template <class RequestType, class ResponseType>
class ClientRpcContextStreamingImpl : public ClientRpcContext {
public:
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ClientRpcContextStreamingImpl(
BenchmarkService::Stub* stub, const RequestType& req,
std::function<gpr_timespec()> next_issue,
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std::function<std::unique_ptr<
grpc::ClientAsyncReaderWriter<RequestType, ResponseType>>(
BenchmarkService::Stub*, grpc::ClientContext*, CompletionQueue*,
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void*)>
start_req,
std::function<void(grpc::Status, ResponseType*)> on_done)
: context_(),
stub_(stub),
cq_(nullptr),
req_(req),
response_(),
next_state_(State::INVALID),
callback_(on_done),
next_issue_(next_issue),
start_req_(start_req) {}
~ClientRpcContextStreamingImpl() GRPC_OVERRIDE {}
void Start(CompletionQueue* cq) GRPC_OVERRIDE {
cq_ = cq;
stream_ = start_req_(stub_, &context_, cq, ClientRpcContext::tag(this));
next_state_ = State::STREAM_IDLE;
}
bool RunNextState(bool ok, HistogramEntry* entry) GRPC_OVERRIDE {
while (true) {
switch (next_state_) {
case State::STREAM_IDLE:
if (!next_issue_) { // ready to issue
next_state_ = State::READY_TO_WRITE;
} else {
next_state_ = State::WAIT;
}
break; // loop around, don't return
case State::WAIT:
alarm_.reset(
new Alarm(cq_, next_issue_(), ClientRpcContext::tag(this)));
next_state_ = State::READY_TO_WRITE;
return true;
case State::READY_TO_WRITE:
if (!ok) {
return false;
}
start_ = UsageTimer::Now();
next_state_ = State::WRITE_DONE;
stream_->Write(req_, ClientRpcContext::tag(this));
return true;
case State::WRITE_DONE:
if (!ok) {
return false;
}
next_state_ = State::READ_DONE;
stream_->Read(&response_, ClientRpcContext::tag(this));
return true;
break;
case State::READ_DONE:
entry->set_value((UsageTimer::Now() - start_) * 1e9);
callback_(status_, &response_);
next_state_ = State::STREAM_IDLE;
break; // loop around
default:
GPR_ASSERT(false);
return false;
}
}
}
ClientRpcContext* StartNewClone() GRPC_OVERRIDE {
return new ClientRpcContextStreamingImpl(stub_, req_, next_issue_,
start_req_, callback_);
}
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private:
grpc::ClientContext context_;
BenchmarkService::Stub* stub_;
CompletionQueue* cq_;
std::unique_ptr<Alarm> alarm_;
RequestType req_;
ResponseType response_;
enum State {
INVALID,
STREAM_IDLE,
WAIT,
READY_TO_WRITE,
WRITE_DONE,
READ_DONE
};
State next_state_;
std::function<void(grpc::Status, ResponseType*)> callback_;
std::function<gpr_timespec()> next_issue_;
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std::function<std::unique_ptr<
grpc::ClientAsyncReaderWriter<RequestType, ResponseType>>(
BenchmarkService::Stub*, grpc::ClientContext*, CompletionQueue*, void*)>
start_req_;
grpc::Status status_;
double start_;
std::unique_ptr<grpc::ClientAsyncReaderWriter<RequestType, ResponseType>>
stream_;
};
class AsyncStreamingClient GRPC_FINAL
: public AsyncClient<BenchmarkService::Stub, SimpleRequest> {
public:
explicit AsyncStreamingClient(const ClientConfig& config)
: AsyncClient<BenchmarkService::Stub, SimpleRequest>(
config, SetupCtx, BenchmarkStubCreator) {
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StartThreads(num_async_threads_);
}
~AsyncStreamingClient() GRPC_OVERRIDE {}
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private:
static void CheckDone(grpc::Status s, SimpleResponse* response) {}
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static std::unique_ptr<
grpc::ClientAsyncReaderWriter<SimpleRequest, SimpleResponse>>
StartReq(BenchmarkService::Stub* stub, grpc::ClientContext* ctx,
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CompletionQueue* cq, void* tag) {
auto stream = stub->AsyncStreamingCall(ctx, cq, tag);
return stream;
};
static ClientRpcContext* SetupCtx(BenchmarkService::Stub* stub,
std::function<gpr_timespec()> next_issue,
const SimpleRequest& req) {
return new ClientRpcContextStreamingImpl<SimpleRequest, SimpleResponse>(
stub, req, next_issue, AsyncStreamingClient::StartReq,
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AsyncStreamingClient::CheckDone);
}
};
class ClientRpcContextGenericStreamingImpl : public ClientRpcContext {
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public:
ClientRpcContextGenericStreamingImpl(
grpc::GenericStub* stub, const ByteBuffer& req,
std::function<gpr_timespec()> next_issue,
std::function<std::unique_ptr<grpc::GenericClientAsyncReaderWriter>(
grpc::GenericStub*, grpc::ClientContext*,
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const grpc::string& method_name, CompletionQueue*, void*)>
start_req,
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std::function<void(grpc::Status, ByteBuffer*)> on_done)
: context_(),
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stub_(stub),
cq_(nullptr),
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req_(req),
response_(),
next_state_(State::INVALID),
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callback_(on_done),
next_issue_(next_issue),
start_req_(start_req) {}
~ClientRpcContextGenericStreamingImpl() GRPC_OVERRIDE {}
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void Start(CompletionQueue* cq) GRPC_OVERRIDE {
cq_ = cq;
const grpc::string kMethodName(
"/grpc.testing.BenchmarkService/StreamingCall");
stream_ = start_req_(stub_, &context_, kMethodName, cq,
ClientRpcContext::tag(this));
next_state_ = State::STREAM_IDLE;
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}
bool RunNextState(bool ok, HistogramEntry* entry) GRPC_OVERRIDE {
while (true) {
switch (next_state_) {
case State::STREAM_IDLE:
if (!next_issue_) { // ready to issue
next_state_ = State::READY_TO_WRITE;
} else {
next_state_ = State::WAIT;
}
break; // loop around, don't return
case State::WAIT:
alarm_.reset(
new Alarm(cq_, next_issue_(), ClientRpcContext::tag(this)));
next_state_ = State::READY_TO_WRITE;
return true;
case State::READY_TO_WRITE:
if (!ok) {
return false;
}
start_ = UsageTimer::Now();
next_state_ = State::WRITE_DONE;
stream_->Write(req_, ClientRpcContext::tag(this));
return true;
case State::WRITE_DONE:
if (!ok) {
return false;
}
next_state_ = State::READ_DONE;
stream_->Read(&response_, ClientRpcContext::tag(this));
return true;
break;
case State::READ_DONE:
entry->set_value((UsageTimer::Now() - start_) * 1e9);
callback_(status_, &response_);
next_state_ = State::STREAM_IDLE;
break; // loop around
default:
GPR_ASSERT(false);
return false;
}
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}
}
ClientRpcContext* StartNewClone() GRPC_OVERRIDE {
return new ClientRpcContextGenericStreamingImpl(stub_, req_, next_issue_,
start_req_, callback_);
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}
private:
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grpc::ClientContext context_;
grpc::GenericStub* stub_;
CompletionQueue* cq_;
std::unique_ptr<Alarm> alarm_;
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ByteBuffer req_;
ByteBuffer response_;
enum State {
INVALID,
STREAM_IDLE,
WAIT,
READY_TO_WRITE,
WRITE_DONE,
READ_DONE
};
State next_state_;
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std::function<void(grpc::Status, ByteBuffer*)> callback_;
std::function<gpr_timespec()> next_issue_;
std::function<std::unique_ptr<grpc::GenericClientAsyncReaderWriter>(
grpc::GenericStub*, grpc::ClientContext*, const grpc::string&,
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CompletionQueue*, void*)>
start_req_;
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grpc::Status status_;
double start_;
std::unique_ptr<grpc::GenericClientAsyncReaderWriter> stream_;
};
static std::unique_ptr<grpc::GenericStub> GenericStubCreator(
std::shared_ptr<Channel> ch) {
return std::unique_ptr<grpc::GenericStub>(new grpc::GenericStub(ch));
}
class GenericAsyncStreamingClient GRPC_FINAL
: public AsyncClient<grpc::GenericStub, ByteBuffer> {
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public:
explicit GenericAsyncStreamingClient(const ClientConfig& config)
: AsyncClient<grpc::GenericStub, ByteBuffer>(config, SetupCtx,
GenericStubCreator) {
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StartThreads(num_async_threads_);
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}
~GenericAsyncStreamingClient() GRPC_OVERRIDE {}
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private:
static void CheckDone(grpc::Status s, ByteBuffer* response) {}
static std::unique_ptr<grpc::GenericClientAsyncReaderWriter> StartReq(
grpc::GenericStub* stub, grpc::ClientContext* ctx,
const grpc::string& method_name, CompletionQueue* cq, void* tag) {
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auto stream = stub->Call(ctx, method_name, cq, tag);
return stream;
};
static ClientRpcContext* SetupCtx(grpc::GenericStub* stub,
std::function<gpr_timespec()> next_issue,
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const ByteBuffer& req) {
return new ClientRpcContextGenericStreamingImpl(
stub, req, next_issue, GenericAsyncStreamingClient::StartReq,
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GenericAsyncStreamingClient::CheckDone);
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}
};
std::unique_ptr<Client> CreateAsyncUnaryClient(const ClientConfig& args) {
return std::unique_ptr<Client>(new AsyncUnaryClient(args));
}
std::unique_ptr<Client> CreateAsyncStreamingClient(const ClientConfig& args) {
return std::unique_ptr<Client>(new AsyncStreamingClient(args));
}
std::unique_ptr<Client> CreateGenericAsyncStreamingClient(
const ClientConfig& args) {
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return std::unique_ptr<Client>(new GenericAsyncStreamingClient(args));
}
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} // namespace testing
} // namespace grpc