You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
98 lines
3.3 KiB
98 lines
3.3 KiB
4 months ago
|
// 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/nanopb_method.h"
|
||
|
|
|
||
|
|
#include "pb_decode.h"
|
||
|
|
#include "pb_encode.h"
|
||
|
|
#include "pw_log/log.h"
|
||
|
|
#include "pw_rpc/internal/packet.h"
|
||
|
|
|
||
|
|
namespace pw::rpc::internal {
|
||
|
|
|
||
|
|
using std::byte;
|
||
|
|
|
||
|
|
void NanopbMethod::CallUnary(ServerCall& call,
|
||
|
|
const Packet& request,
|
||
|
|
void* request_struct,
|
||
|
|
void* response_struct) const {
|
||
|
|
if (!DecodeRequest(call.channel(), request, request_struct)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
const Status status = function_.unary(call, request_struct, response_struct);
|
||
|
|
SendResponse(call.channel(), request, response_struct, status);
|
||
|
|
}
|
||
|
|
|
||
|
|
void NanopbMethod::CallServerStreaming(ServerCall& call,
|
||
|
|
const Packet& request,
|
||
|
|
void* request_struct) const {
|
||
|
|
if (!DecodeRequest(call.channel(), request, request_struct)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
internal::BaseServerWriter server_writer(call);
|
||
|
|
function_.server_streaming(call, request_struct, server_writer);
|
||
|
|
}
|
||
|
|
|
||
|
|
bool NanopbMethod::DecodeRequest(Channel& channel,
|
||
|
|
const Packet& request,
|
||
|
|
void* proto_struct) const {
|
||
|
|
if (serde_.DecodeRequest(proto_struct, request.payload())) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
PW_LOG_WARN("Nanopb failed to decode request payload from channel %u",
|
||
|
|
unsigned(channel.id()));
|
||
|
|
channel.Send(Packet::ServerError(request, Status::DataLoss()));
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
void NanopbMethod::SendResponse(Channel& channel,
|
||
|
|
const Packet& request,
|
||
|
|
const void* response_struct,
|
||
|
|
Status status) const {
|
||
|
|
Channel::OutputBuffer response_buffer = channel.AcquireBuffer();
|
||
|
|
std::span payload_buffer = response_buffer.payload(request);
|
||
|
|
|
||
|
|
StatusWithSize encoded = EncodeResponse(response_struct, payload_buffer);
|
||
|
|
|
||
|
|
if (encoded.ok()) {
|
||
|
|
Packet response = Packet::Response(request);
|
||
|
|
|
||
|
|
response.set_payload(payload_buffer.first(encoded.size()));
|
||
|
|
response.set_status(status);
|
||
|
|
pw::Status send_status = channel.Send(response_buffer, response);
|
||
|
|
if (send_status.ok()) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
PW_LOG_WARN("Failed to send response packet for channel %u, status %u",
|
||
|
|
unsigned(channel.id()),
|
||
|
|
send_status.code());
|
||
|
|
|
||
|
|
// Re-acquire the buffer to encode an error packet.
|
||
|
|
response_buffer = channel.AcquireBuffer();
|
||
|
|
} else {
|
||
|
|
PW_LOG_WARN(
|
||
|
|
"Nanopb failed to encode response packet for channel %u, status %u",
|
||
|
|
unsigned(channel.id()),
|
||
|
|
encoded.status().code());
|
||
|
|
}
|
||
|
|
channel.Send(response_buffer,
|
||
|
|
Packet::ServerError(request, Status::Internal()));
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace pw::rpc::internal
|