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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.
// clang-format off
#include "pw_rpc/internal/log_config.h" // PW_LOG_* macros must be first.
#include "pw_rpc/internal/fake_channel_output.h"
// clang-format on
#include "pw_assert/check.h"
#include "pw_log/log.h"
#include "pw_result/result.h"
#include "pw_rpc/internal/packet.h"
namespace pw::rpc::internal::test {
void FakeChannelOutput::clear() {
std::lock_guard lock(mutex_);
payloads_.clear();
packets_.clear();
send_status_ = OkStatus();
return_after_packet_count_ = -1;
}
Status FakeChannelOutput::HandlePacket(span<const std::byte> buffer) {
// If the buffer is empty, this is just releasing an unused buffer.
if (buffer.empty()) {
return OkStatus();
}
if (return_after_packet_count_ == 0) {
return send_status_;
}
if (return_after_packet_count_ > 0 &&
return_after_packet_count_ == static_cast<int>(packets_.size())) {
// Disable behavior.
return_after_packet_count_ = -1;
return send_status_;
}
Result<Packet> result = Packet::FromBuffer(buffer);
PW_CHECK_OK(result.status());
PW_CHECK(!packets_.full(),
"Attempted to store more than %u packets. Increase the kMaxPackets "
"template arg to store more packets.",
static_cast<unsigned>(packets_.size()));
packets_.push_back(*result);
Packet& packet = packets_.back();
CopyPayloadToBuffer(packet);
switch (packet.type()) {
case pwpb::PacketType::REQUEST:
return OkStatus();
case pwpb::PacketType::RESPONSE:
total_response_packets_ += 1;
return OkStatus();
case pwpb::PacketType::CLIENT_STREAM:
return OkStatus();
case pwpb::PacketType::CLIENT_ERROR:
PW_LOG_WARN("FakeChannelOutput received client error: %s",
packet.status().str());
return OkStatus();
case pwpb::PacketType::SERVER_ERROR:
PW_LOG_WARN("FakeChannelOutput received server error: %s",
packet.status().str());
return OkStatus();
case pwpb::PacketType::SERVER_STREAM:
case pwpb::PacketType::CLIENT_REQUEST_COMPLETION:
return OkStatus();
}
PW_CRASH("Unhandled PacketType %d", static_cast<int>(result.value().type()));
}
void FakeChannelOutput::CopyPayloadToBuffer(Packet& packet) {
const ConstByteSpan& payload = packet.payload();
if (payload.empty()) {
return;
}
const size_t available_bytes = payloads_.max_size() - payloads_.size();
PW_CHECK_UINT_GE(available_bytes,
payload.size(),
"Ran out of payload buffer space. Increase "
"kPayloadBufferSizeBytes (%u) or use smaller payloads.",
static_cast<unsigned>(payloads_.max_size()));
const size_t start = payloads_.size();
payloads_.resize(payloads_.size() + payload.size());
std::memcpy(&payloads_[start], payload.data(), payload.size());
packet.set_payload(span(&payloads_[start], payload.size()));
}
void FakeChannelOutput::LogPackets() const {
std::lock_guard lock(mutex_);
PW_LOG_INFO("%u packets have been sent through this FakeChannelOutput",
static_cast<unsigned>(packets_.size()));
for (unsigned i = 0; i < packets_.size(); ++i) {
PW_LOG_INFO("[packet %u/%u]", i + 1, unsigned(packets_.size()));
PW_LOG_INFO(" type: %u", unsigned(packets_[i].type()));
PW_LOG_INFO(" channel_id: %u", unsigned(packets_[i].channel_id()));
PW_LOG_INFO(" service_id: %08x", unsigned(packets_[i].service_id()));
PW_LOG_INFO(" method_id: %08x", unsigned(packets_[i].method_id()));
PW_LOG_INFO(" call_id: %u", unsigned(packets_[i].call_id()));
PW_LOG_INFO(" status: %s", packets_[i].status().str());
PW_LOG_INFO(" payload: %u B", unsigned(packets_[i].payload().size()));
}
}
} // namespace pw::rpc::internal::test
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