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// Copyright 2021 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 <sys/socket.h>
#include <algorithm>
#include <array>
#include <cstring>
#include "gtest/gtest.h"
#include "pw_assert/check.h"
#include "pw_log/log.h"
#include "pw_rpc/benchmark.raw_rpc.pb.h"
#include "pw_rpc/integration_testing.h"
#include "pw_sync/binary_semaphore.h"
namespace rpc_test {
namespace {
constexpr int kIterations = 3;
// This client configures a socket read timeout to allow the RPC dispatch thread
// to exit gracefully.
constexpr timeval kSocketReadTimeout = {.tv_sec = 1, .tv_usec = 0};
using namespace std::chrono_literals;
using pw::ByteSpan;
using pw::ConstByteSpan;
using pw::Function;
using pw::OkStatus;
using pw::Status;
using pw::rpc::pw_rpc::raw::Benchmark;
Benchmark::Client kServiceClient(pw::rpc::integration_test::client(),
pw::rpc::integration_test::kChannelId);
class StringReceiver {
public:
const char* Wait() {
PW_CHECK(sem_.try_acquire_for(10s));
return reinterpret_cast<const char*>(buffer_.begin());
}
Function<void(ConstByteSpan, Status)> UnaryOnCompleted() {
return [this](ConstByteSpan data, Status) { CopyStringPayload(data); };
}
Function<void(ConstByteSpan)> OnNext() {
return [this](ConstByteSpan data) { CopyStringPayload(data); };
}
void CopyStringPayload(ConstByteSpan data) {
std::memset(buffer_.data(), 0, buffer_.size());
PW_CHECK_UINT_LE(data.size(), buffer_.size());
std::copy(data.begin(), data.end(), buffer_.begin());
sem_.release();
}
void ReverseCopyStringPayload(ConstByteSpan data) {
std::memset(buffer_.data(), 0, buffer_.size());
PW_CHECK_UINT_LE(data.size(), buffer_.size());
std::reverse_copy(data.begin(), data.end() - 1, buffer_.begin());
sem_.release();
}
private:
pw::sync::BinarySemaphore sem_;
std::array<std::byte, 64> buffer_;
};
TEST(RawRpcIntegrationTest, Unary) {
for (int i = 0; i < kIterations; ++i) {
StringReceiver receiver;
pw::rpc::RawUnaryReceiver call = kServiceClient.UnaryEcho(
pw::as_bytes(pw::span("hello")), receiver.UnaryOnCompleted());
EXPECT_STREQ(receiver.Wait(), "hello");
}
}
TEST(RawRpcIntegrationTest, BidirectionalStreaming) {
for (int i = 0; i < kIterations; ++i) {
StringReceiver receiver;
pw::rpc::RawClientReaderWriter call =
kServiceClient.BidirectionalEcho(receiver.OnNext());
ASSERT_EQ(OkStatus(), call.Write(pw::as_bytes(pw::span("Yello"))));
EXPECT_STREQ(receiver.Wait(), "Yello");
ASSERT_EQ(OkStatus(), call.Write(pw::as_bytes(pw::span("Dello"))));
EXPECT_STREQ(receiver.Wait(), "Dello");
ASSERT_EQ(OkStatus(), call.Cancel());
}
}
// This test sometimes fails due to a server stream packet being dropped.
// TODO: b/290048137 - Enable this test after the flakiness is fixed.
TEST(RawRpcIntegrationTest, DISABLED_OnNextOverwritesItsOwnCall) {
for (int i = 0; i < kIterations; ++i) {
struct {
StringReceiver receiver;
pw::rpc::RawClientReaderWriter call;
} ctx;
// Chain together three calls. The first and third copy the string in normal
// order, while the second copies the string in reverse order.
ctx.call = kServiceClient.BidirectionalEcho([&ctx](ConstByteSpan data) {
ctx.call = kServiceClient.BidirectionalEcho([&ctx](ConstByteSpan data) {
ctx.receiver.ReverseCopyStringPayload(data);
ctx.call = kServiceClient.BidirectionalEcho(ctx.receiver.OnNext());
});
ctx.receiver.CopyStringPayload(data);
});
ASSERT_EQ(OkStatus(), ctx.call.Write(pw::as_bytes(pw::span("Window"))));
EXPECT_STREQ(ctx.receiver.Wait(), "Window");
ASSERT_EQ(OkStatus(), ctx.call.Write(pw::as_bytes(pw::span("Door"))));
EXPECT_STREQ(ctx.receiver.Wait(), "rooD");
ASSERT_EQ(OkStatus(), ctx.call.Write(pw::as_bytes(pw::span("Roof"))));
EXPECT_STREQ(ctx.receiver.Wait(), "Roof");
ASSERT_EQ(OkStatus(), ctx.call.Cancel());
}
}
} // namespace
} // namespace rpc_test
int main(int argc, char* argv[]) {
if (!pw::rpc::integration_test::InitializeClient(argc, argv).ok()) {
return 1;
}
// Set read timout on socket to allow
// pw::rpc::integration_test::TerminateClient() to complete.
int retval = setsockopt(pw::rpc::integration_test::GetClientSocketFd(),
SOL_SOCKET,
SO_RCVTIMEO,
&rpc_test::kSocketReadTimeout,
sizeof(rpc_test::kSocketReadTimeout));
PW_CHECK_INT_EQ(retval,
0,
"Failed to configure socket receive timeout with errno=%d",
errno);
int test_retval = RUN_ALL_TESTS();
pw::rpc::integration_test::TerminateClient();
return test_retval;
}
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