80 lines
2.8 KiB
C++
80 lines
2.8 KiB
C++
// Copyright 2020 The Pigweed Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not
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// use this file except in compliance with the License. You may obtain a copy of
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// the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations under
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// the License.
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// clang-format off
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#include "pw_rpc/internal/log_config.h" // PW_LOG_* macros must be first.
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#include "pw_rpc/nanopb/internal/method.h"
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// clang-format on
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#include "pb_decode.h"
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#include "pb_encode.h"
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#include "pw_log/log.h"
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#include "pw_rpc/internal/packet.h"
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namespace pw::rpc {
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namespace internal {
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void NanopbMethod::CallSynchronousUnary(const CallContext& context,
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const Packet& request,
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void* request_struct,
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void* response_struct) const {
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if (!DecodeRequest(context, request, request_struct)) {
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rpc_lock().unlock();
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return;
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}
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NanopbServerCall responder(context, MethodType::kUnary);
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rpc_lock().unlock();
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const Status status = function_.synchronous_unary(
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context.service(), request_struct, response_struct);
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responder.SendUnaryResponse(response_struct, status).IgnoreError();
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}
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void NanopbMethod::CallUnaryRequest(const CallContext& context,
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MethodType type,
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const Packet& request,
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void* request_struct) const {
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if (!DecodeRequest(context, request, request_struct)) {
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rpc_lock().unlock();
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return;
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}
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NanopbServerCall server_writer(context, type);
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rpc_lock().unlock();
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function_.unary_request(context.service(), request_struct, server_writer);
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}
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bool NanopbMethod::DecodeRequest(const CallContext& context,
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const Packet& request,
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void* proto_struct) const {
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if (serde_.DecodeRequest(request.payload(), proto_struct)) {
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return true;
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}
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// The channel is known to exist. It was found when the request was processed
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// and the lock has been held since, so GetInternalChannel cannot fail.
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static_cast<internal::Channel*>(
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context.server().GetInternalChannel(context.channel_id()))
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->Send(Packet::ServerError(request, Status::DataLoss()))
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.IgnoreError();
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PW_LOG_WARN("Nanopb failed to decode request payload from channel %u",
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unsigned(context.channel_id()));
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return false;
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}
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} // namespace internal
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} // namespace pw::rpc
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