64 lines
2.2 KiB
C
64 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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#pragma once
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#include <folly/io/async/EventBase.h>
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#include "rsocket/framing/FrameTransport.h"
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namespace rsocket {
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// This class is a wrapper around FrameTransport which ensures all methods of
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// FrameTransport get executed in a particular EventBase.
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//
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// This is currently used in the server where the resumed Transport of the
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// client is on a different EventBase compared to the EventBase on which the
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// original RSocketStateMachine was constructed for the client. Here the
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// RSocketStateMachine uses this class to schedule events of the Transport in
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// the new EventBase.
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class ScheduledFrameTransport : public FrameTransport {
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public:
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ScheduledFrameTransport(
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std::shared_ptr<FrameTransport> frameTransport,
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folly::EventBase* transportEvb,
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folly::EventBase* stateMachineEvb)
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: transportEvb_(transportEvb),
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stateMachineEvb_(stateMachineEvb),
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frameTransport_(std::move(frameTransport)) {}
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~ScheduledFrameTransport();
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void setFrameProcessor(std::shared_ptr<FrameProcessor>) override;
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void outputFrameOrDrop(std::unique_ptr<folly::IOBuf>) override;
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void close() override;
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bool isConnectionFramed() const override;
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private:
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DuplexConnection* getConnection() override {
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DLOG(FATAL)
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<< "ScheduledFrameTransport doesn't support getConnection method, "
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"because it can create safe usage issues when EventBase of the "
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"transport and the RSocketClient is not the same.";
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return nullptr;
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}
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private:
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folly::EventBase* const transportEvb_;
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folly::EventBase* const stateMachineEvb_;
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std::shared_ptr<FrameTransport> frameTransport_;
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};
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} // namespace rsocket
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