blob: 761b3a3c0ce114ad115d5f08812a6f6057c7a8e5 [file] [log] [blame]
// Copyright 2020 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 "pw_rpc/internal/raw_method.h"
#include <cstring>
#include "pw_log/log.h"
#include "pw_rpc/internal/packet.h"
namespace pw::rpc {
RawServerWriter::~RawServerWriter() {
if (!buffer().empty()) {
ReleasePayloadBuffer();
}
}
Status RawServerWriter::Write(ConstByteSpan response) {
if (!open()) {
return Status::FailedPrecondition();
}
if (buffer().Contains(response)) {
return ReleasePayloadBuffer(response);
}
std::span<std::byte> buffer = AcquirePayloadBuffer();
if (response.size() > buffer.size()) {
ReleasePayloadBuffer();
return Status::OutOfRange();
}
std::memcpy(buffer.data(), response.data(), response.size());
return ReleasePayloadBuffer(buffer.first(response.size()));
}
namespace internal {
void RawMethod::CallUnary(ServerCall& call, const Packet& request) const {
Channel::OutputBuffer response_buffer = call.channel().AcquireBuffer();
std::span payload_buffer = response_buffer.payload(request);
StatusWithSize sws = function_.unary(call, request.payload(), payload_buffer);
Packet response = Packet::Response(request);
response.set_payload(payload_buffer.first(sws.size()));
response.set_status(sws.status());
if (call.channel().Send(response_buffer, response).ok()) {
return;
}
PW_LOG_WARN("Failed to send response packet for channel %u",
unsigned(call.channel().id()));
call.channel().Send(Packet::ServerError(request, Status::Internal()));
}
void RawMethod::CallServerStreaming(ServerCall& call,
const Packet& request) const {
internal::Responder server_writer(call);
function_.server_streaming(call, request.payload(), server_writer);
}
} // namespace internal
} // namespace pw::rpc