66 lines
2.2 KiB
C++
66 lines
2.2 KiB
C++
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// Copyright (c) Facebook, Inc. and its affiliates.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://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,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "rsocket/framing/FrameSerializer.h"
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#include "rsocket/framing/FrameSerializer_v1_0.h"
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namespace rsocket {
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std::unique_ptr<FrameSerializer> FrameSerializer::createFrameSerializer(
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const ProtocolVersion& protocolVersion) {
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if (protocolVersion == FrameSerializerV1_0::Version) {
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return std::make_unique<FrameSerializerV1_0>();
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}
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DCHECK(protocolVersion == ProtocolVersion::Unknown);
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LOG_IF(ERROR, protocolVersion != ProtocolVersion::Unknown)
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<< "unknown protocol version " << protocolVersion;
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return nullptr;
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}
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std::unique_ptr<FrameSerializer> FrameSerializer::createAutodetectedSerializer(
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const folly::IOBuf& firstFrame) {
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auto detectedVersion = FrameSerializerV1_0::detectProtocolVersion(firstFrame);
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return createFrameSerializer(detectedVersion);
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}
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bool& FrameSerializer::preallocateFrameSizeField() {
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return preallocateFrameSizeField_;
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}
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folly::IOBufQueue FrameSerializer::createBufferQueue(size_t bufferSize) const {
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const auto prependSize =
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preallocateFrameSizeField_ ? frameLengthFieldSize() : 0;
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auto buf = folly::IOBuf::createCombined(bufferSize + prependSize);
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buf->advance(prependSize);
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folly::IOBufQueue queue(folly::IOBufQueue::cacheChainLength());
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queue.append(std::move(buf));
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return queue;
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}
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folly::Optional<StreamId> FrameSerializer::peekStreamId(
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const ProtocolVersion& protocolVersion,
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const folly::IOBuf& frame,
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bool skipFrameLengthBytes) {
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if (protocolVersion == FrameSerializerV1_0::Version) {
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return FrameSerializerV1_0().peekStreamId(frame, skipFrameLengthBytes);
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}
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auto* msg = "unknown protocol version";
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DCHECK(false) << msg;
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return folly::none;
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}
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} // namespace rsocket
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