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#include <uds/client_channel.h>
#include <sys/socket.h>
#include <algorithm>
#include <limits>
#include <random>
#include <thread>
#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include <pdx/client.h>
#include <pdx/rpc/remote_method.h>
#include <pdx/service.h>
#include <pdx/service_dispatcher.h>
#include <uds/client_channel_factory.h>
#include <uds/service_endpoint.h>
using testing::Return;
using testing::_;
using android::pdx::ClientBase;
using android::pdx::LocalChannelHandle;
using android::pdx::LocalHandle;
using android::pdx::Message;
using android::pdx::ServiceBase;
using android::pdx::ServiceDispatcher;
using android::pdx::Status;
using android::pdx::rpc::DispatchRemoteMethod;
using android::pdx::uds::ClientChannel;
using android::pdx::uds::ClientChannelFactory;
using android::pdx::uds::Endpoint;
namespace {
struct TestProtocol {
using DataType = int8_t;
enum {
kOpSum = 0,
};
PDX_REMOTE_METHOD(Sum, kOpSum, int64_t(const std::vector<DataType>&));
};
class TestService : public ServiceBase<TestService> {
public:
explicit TestService(std::unique_ptr<Endpoint> endpoint)
: ServiceBase{"TestService", std::move(endpoint)} {}
Status<void> HandleMessage(Message& message) override {
switch (message.GetOp()) {
case TestProtocol::kOpSum:
DispatchRemoteMethod<TestProtocol::Sum>(*this, &TestService::OnSum,
message);
return {};
default:
return Service::HandleMessage(message);
}
}
int64_t OnSum(Message& /*message*/,
const std::vector<TestProtocol::DataType>& data) {
return std::accumulate(data.begin(), data.end(), int64_t{0});
}
};
class TestClient : public ClientBase<TestClient> {
public:
using ClientBase::ClientBase;
int64_t Sum(const std::vector<TestProtocol::DataType>& data) {
auto status = InvokeRemoteMethod<TestProtocol::Sum>(data);
return status ? status.get() : -1;
}
};
class TestServiceRunner {
public:
explicit TestServiceRunner(LocalHandle channel_socket) {
auto endpoint = Endpoint::CreateFromSocketFd(LocalHandle{});
endpoint->RegisterNewChannelForTests(std::move(channel_socket));
service_ = TestService::Create(std::move(endpoint));
dispatcher_ = ServiceDispatcher::Create();
dispatcher_->AddService(service_);
dispatch_thread_ = std::thread(
std::bind(&ServiceDispatcher::EnterDispatchLoop, dispatcher_.get()));
}
~TestServiceRunner() {
dispatcher_->SetCanceled(true);
dispatch_thread_.join();
dispatcher_->RemoveService(service_);
}
private:
std::shared_ptr<TestService> service_;
std::unique_ptr<ServiceDispatcher> dispatcher_;
std::thread dispatch_thread_;
};
class ClientChannelTest : public testing::Test {
public:
void SetUp() override {
int channel_sockets[2] = {};
ASSERT_EQ(
0, socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, channel_sockets));
LocalHandle service_channel{channel_sockets[0]};
LocalHandle client_channel{channel_sockets[1]};
service_runner_.reset(new TestServiceRunner{std::move(service_channel)});
auto factory = ClientChannelFactory::Create(std::move(client_channel));
auto status = factory->Connect(android::pdx::Client::kInfiniteTimeout);
ASSERT_TRUE(status);
client_ = TestClient::Create(status.take());
}
void TearDown() override {
service_runner_.reset();
client_.reset();
}
protected:
std::unique_ptr<TestServiceRunner> service_runner_;
std::shared_ptr<TestClient> client_;
};
TEST_F(ClientChannelTest, MultithreadedClient) {
constexpr int kNumTestThreads = 8;
constexpr size_t kDataSize = 1000; // Try to keep RPC buffer size below 4K.
std::random_device rd;
std::mt19937 gen{rd()};
std::uniform_int_distribution<TestProtocol::DataType> dist{
std::numeric_limits<TestProtocol::DataType>::min(),
std::numeric_limits<TestProtocol::DataType>::max()};
auto worker = [](std::shared_ptr<TestClient> client,
std::vector<TestProtocol::DataType> data) {
constexpr int kMaxIterations = 500;
int64_t expected = std::accumulate(data.begin(), data.end(), int64_t{0});
for (int i = 0; i < kMaxIterations; i++) {
ASSERT_EQ(expected, client->Sum(data));
}
};
// Start client threads.
std::vector<TestProtocol::DataType> data;
data.resize(kDataSize);
std::vector<std::thread> threads;
for (int i = 0; i < kNumTestThreads; i++) {
std::generate(data.begin(), data.end(),
[&dist, &gen]() { return dist(gen); });
threads.emplace_back(worker, client_, data);
}
// Wait for threads to finish.
for (auto& thread : threads)
thread.join();
}
} // namespace
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