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// Copyright 2022 The Pigweed 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
//
// https://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 <atomic>
#include <iostream>
#include "gtest/gtest.h"
#include "pw_function/function.h"
#include "pw_rpc/pwpb/client_server_testing_threaded.h"
#include "pw_rpc_test_protos/test.rpc.pwpb.h"
#include "pw_sync/binary_semaphore.h"
#include "pw_thread/non_portable_test_thread_options.h"
namespace pw::rpc {
namespace {
namespace TestRequest = ::pw::rpc::test::pwpb::TestRequest;
namespace TestResponse = ::pw::rpc::test::pwpb::TestResponse;
namespace TestStreamResponse = ::pw::rpc::test::pwpb::TestStreamResponse;
} // namespace
namespace test {
using GeneratedService = ::pw::rpc::test::pw_rpc::pwpb::TestService;
class TestService final : public GeneratedService::Service<TestService> {
public:
Status TestUnaryRpc(const TestRequest::Message& request,
TestResponse::Message& response) {
response.value = request.integer + 1;
return static_cast<Status::Code>(request.status_code);
}
Status TestAnotherUnaryRpc(const TestRequest::Message& request,
TestResponse::Message& response) {
response.value = 42;
response.repeated_field.SetEncoder(
[](TestResponse::StreamEncoder& encoder) {
constexpr std::array<uint32_t, 3> kValues = {7, 8, 9};
return encoder.WriteRepeatedField(kValues);
});
return static_cast<Status::Code>(request.status_code);
}
static void TestServerStreamRpc(const TestRequest::Message&,
ServerWriter<TestStreamResponse::Message>&) {}
void TestClientStreamRpc(
ServerReader<TestRequest::Message, TestStreamResponse::Message>&) {}
void TestBidirectionalStreamRpc(
ServerReaderWriter<TestRequest::Message, TestStreamResponse::Message>&) {}
};
} // namespace test
namespace {
class RpcCaller {
public:
template <auto kMethod = test::GeneratedService::TestUnaryRpc>
Status BlockOnResponse(uint32_t i, Client& client, uint32_t channel_id) {
TestRequest::Message request{.integer = i,
.status_code = OkStatus().code()};
response_status_ = OkStatus();
auto call = kMethod(
client,
channel_id,
request,
[this](const TestResponse::Message&, Status status) {
response_status_ = status;
semaphore_.release();
},
[this](Status status) {
response_status_ = status;
semaphore_.release();
});
semaphore_.acquire();
return response_status_;
}
private:
Status response_status_ = OkStatus();
pw::sync::BinarySemaphore semaphore_;
};
TEST(PwpbClientServerTestContextThreaded, ReceivesUnaryRpcResponseThreaded) {
// TODO: b/290860904 - Replace TestOptionsThread0 with TestThreadContext.
PwpbClientServerTestContextThreaded<> ctx(thread::test::TestOptionsThread0());
test::TestService service;
ctx.server().RegisterService(service);
RpcCaller caller;
constexpr auto value = 1;
EXPECT_EQ(caller.BlockOnResponse(value, ctx.client(), ctx.channel().id()),
OkStatus());
const auto request =
ctx.request<test::pw_rpc::pwpb::TestService::TestUnaryRpc>(0);
const auto response =
ctx.response<test::pw_rpc::pwpb::TestService::TestUnaryRpc>(0);
EXPECT_EQ(value, request.integer);
EXPECT_EQ(value + 1, response.value);
}
TEST(PwpbClientServerTestContextThreaded, ReceivesMultipleResponsesThreaded) {
PwpbClientServerTestContextThreaded<> ctx(thread::test::TestOptionsThread0());
test::TestService service;
ctx.server().RegisterService(service);
RpcCaller caller;
constexpr auto value1 = 1;
constexpr auto value2 = 2;
EXPECT_EQ(caller.BlockOnResponse(value1, ctx.client(), ctx.channel().id()),
OkStatus());
EXPECT_EQ(caller.BlockOnResponse(value2, ctx.client(), ctx.channel().id()),
OkStatus());
const auto request1 =
ctx.request<test::pw_rpc::pwpb::TestService::TestUnaryRpc>(0);
const auto request2 =
ctx.request<test::pw_rpc::pwpb::TestService::TestUnaryRpc>(1);
const auto response1 =
ctx.response<test::pw_rpc::pwpb::TestService::TestUnaryRpc>(0);
const auto response2 =
ctx.response<test::pw_rpc::pwpb::TestService::TestUnaryRpc>(1);
EXPECT_EQ(value1, request1.integer);
EXPECT_EQ(value2, request2.integer);
EXPECT_EQ(value1 + 1, response1.value);
EXPECT_EQ(value2 + 1, response2.value);
}
TEST(PwpbClientServerTestContextThreaded,
ReceivesMultipleResponsesThreadedWithPacketProcessor) {
using ProtectedInt = std::pair<int, pw::sync::Mutex>;
ProtectedInt server_counter{};
auto server_processor = [&server_counter](
ClientServer& client_server,
pw::ConstByteSpan packet) -> pw::Status {
server_counter.second.lock();
++server_counter.first;
server_counter.second.unlock();
return client_server.ProcessPacket(packet);
};
ProtectedInt client_counter{};
auto client_processor = [&client_counter](
ClientServer& client_server,
pw::ConstByteSpan packet) -> pw::Status {
client_counter.second.lock();
++client_counter.first;
client_counter.second.unlock();
return client_server.ProcessPacket(packet);
};
PwpbClientServerTestContextThreaded<> ctx(
thread::test::TestOptionsThread0(), server_processor, client_processor);
test::TestService service;
ctx.server().RegisterService(service);
RpcCaller caller;
constexpr auto value1 = 1;
constexpr auto value2 = 2;
EXPECT_EQ(caller.BlockOnResponse(value1, ctx.client(), ctx.channel().id()),
OkStatus());
EXPECT_EQ(caller.BlockOnResponse(value2, ctx.client(), ctx.channel().id()),
OkStatus());
const auto request1 =
ctx.request<test::pw_rpc::pwpb::TestService::TestUnaryRpc>(0);
const auto request2 =
ctx.request<test::pw_rpc::pwpb::TestService::TestUnaryRpc>(1);
const auto response1 =
ctx.response<test::pw_rpc::pwpb::TestService::TestUnaryRpc>(0);
const auto response2 =
ctx.response<test::pw_rpc::pwpb::TestService::TestUnaryRpc>(1);
EXPECT_EQ(value1, request1.integer);
EXPECT_EQ(value2, request2.integer);
EXPECT_EQ(value1 + 1, response1.value);
EXPECT_EQ(value2 + 1, response2.value);
server_counter.second.lock();
EXPECT_EQ(server_counter.first, 2);
server_counter.second.unlock();
client_counter.second.lock();
EXPECT_EQ(client_counter.first, 2);
client_counter.second.unlock();
}
TEST(PwpbClientServerTestContextThreaded, ResponseWithCallbacks) {
PwpbClientServerTestContextThreaded<> ctx(thread::test::TestOptionsThread0());
test::TestService service;
ctx.server().RegisterService(service);
RpcCaller caller;
// DataLoss expected on initial response, since pwpb provides no way to
// populate response callback. We setup callbacks on response packet below.
EXPECT_EQ(caller.BlockOnResponse<test::GeneratedService::TestAnotherUnaryRpc>(
0, ctx.client(), ctx.channel().id()),
Status::DataLoss());
// To decode a response object that requires to set callbacks, pass it to the
// response() method as a parameter.
pw::Vector<uint32_t, 4> values{};
TestResponse::Message response{};
response.repeated_field.SetDecoder(
[&values](TestResponse::StreamDecoder& decoder) {
return decoder.ReadRepeatedField(values);
});
ctx.response<test::GeneratedService::TestAnotherUnaryRpc>(0, response);
EXPECT_EQ(42, response.value);
EXPECT_EQ(3u, values.size());
EXPECT_EQ(7u, values[0]);
EXPECT_EQ(8u, values[1]);
EXPECT_EQ(9u, values[2]);
}
} // namespace
} // namespace pw::rpc
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