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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef REMOTING_PROTOCOL_FAKE_MESSAGE_PIPE_H_
#define REMOTING_PROTOCOL_FAKE_MESSAGE_PIPE_H_
#include <memory>
#include <string>
#include <vector>
#include "base/containers/queue.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "remoting/protocol/message_pipe.h"
namespace google {
namespace protobuf {
class MessageLite;
} // namespace protobuf
} // namespace google
namespace remoting::protocol {
class FakeMessagePipeWrapper;
class FakeMessagePipe final : public MessagePipe {
public:
explicit FakeMessagePipe(bool asynchronous);
~FakeMessagePipe() override;
// Creates an std::unique_ptr<FakeMessagePipeWrapper> instance to wrap |this|.
// All operations will be forwarded to |this| except for the destructor.
//
// Most of the components take ownership of std::unique_ptr<MessagePipe>,
// which makes the test cases hard to maintain the lifetime of a
// FakeMessagePipe. So this function creates a "weak" unique_ptr of this
// instance to let the test case decide the lifetime of a FakeMessagePipe.
std::unique_ptr<FakeMessagePipeWrapper> Wrap();
// MessagePipe implementation.
void Start(EventHandler* event_handler) override;
void Send(google::protobuf::MessageLite* message,
base::OnceClosure done) override;
// Forwards |message| to EventHandler.
void Receive(std::unique_ptr<CompoundBuffer> message);
// Similar to Receive(), but takes a protobuf and serializes it before sending
// it to EventHandler.
void ReceiveProtobufMessage(const google::protobuf::MessageLite& message);
// Simulates the operation to open the pipe.
void OpenPipe();
// Simulates the operation to close the pipe.
void ClosePipe();
// Returns true if there is at least one valid wrapper that hasn't been
// destroyed.
bool HasWrappers() const;
// Returns all messages sent using Send().
const base::queue<std::string>& sent_messages() { return sent_messages_; }
bool pipe_opened() const { return pipe_opened_; }
private:
void SendImpl(google::protobuf::MessageLite* message, base::OnceClosure done);
void ReceiveImpl(std::unique_ptr<CompoundBuffer> message);
void OpenPipeImpl();
void ClosePipeImpl();
const bool asynchronous_;
bool pipe_opened_ = false;
raw_ptr<EventHandler, AcrossTasksDanglingUntriaged> event_handler_ = nullptr;
base::queue<std::string> sent_messages_;
std::vector<base::WeakPtr<FakeMessagePipeWrapper>> wrappers_;
};
} // namespace remoting::protocol
#endif // REMOTING_PROTOCOL_FAKE_MESSAGE_PIPE_H_
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