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