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