| // 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/channel.h" |
| |
| #include "pw_log/log.h" |
| #include "pw_rpc/internal/packet.h" |
| |
| namespace pw::rpc::internal { |
| |
| using std::byte; |
| |
| std::span<byte> Channel::OutputBuffer::payload(const Packet& packet) const { |
| const size_t reserved_size = packet.MinEncodedSizeBytes(); |
| return reserved_size <= buffer_.size() ? buffer_.subspan(reserved_size) |
| : std::span<byte>(); |
| } |
| |
| Status Channel::Send(OutputBuffer& buffer, const internal::Packet& packet) { |
| Result encoded = packet.Encode(buffer.buffer_); |
| |
| if (!encoded.ok()) { |
| PW_LOG_ERROR("Failed to encode response packet to channel buffer"); |
| output().DiscardBuffer(buffer.buffer_); |
| buffer.buffer_ = {}; |
| return Status::Internal(); |
| } |
| |
| buffer.buffer_ = {}; |
| return output().SendAndReleaseBuffer(encoded.value()); |
| } |
| |
| } // namespace pw::rpc::internal |