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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MOJO_PUBLIC_CPP_BINDINGS_LIB_ROUTER_H_
#define MOJO_PUBLIC_CPP_BINDINGS_LIB_ROUTER_H_
#include <map>
#include "mojo/public/cpp/bindings/lib/connector.h"
#include "mojo/public/cpp/bindings/lib/filter_chain.h"
#include "mojo/public/cpp/bindings/lib/shared_data.h"
#include "mojo/public/cpp/environment/environment.h"
namespace mojo {
namespace internal {
class Router : public MessageReceiverWithResponder {
public:
Router(ScopedMessagePipeHandle message_pipe,
FilterChain filters,
const MojoAsyncWaiter* waiter = Environment::GetDefaultAsyncWaiter());
~Router() override;
// Sets the receiver to handle messages read from the message pipe that do
// not have the kMessageIsResponse flag set.
void set_incoming_receiver(MessageReceiverWithResponder* receiver) {
incoming_receiver_ = receiver;
}
// Sets the error handler to receive notifications when an error is
// encountered while reading from the pipe or waiting to read from the pipe.
void set_error_handler(ErrorHandler* error_handler) {
connector_.set_error_handler(error_handler);
}
// Returns true if an error was encountered while reading from the pipe or
// waiting to read from the pipe.
bool encountered_error() const { return connector_.encountered_error(); }
void CloseMessagePipe() { connector_.CloseMessagePipe(); }
ScopedMessagePipeHandle PassMessagePipe() {
return connector_.PassMessagePipe();
}
// MessageReceiver implementation:
bool Accept(Message* message) override;
bool AcceptWithResponder(Message* message,
MessageReceiver* responder) override;
// Blocks the current thread for the first incoming method call, i.e., either
// a call to a client method or a callback method.
bool WaitForIncomingMessage() { return connector_.WaitForIncomingMessage(); }
// Sets this object to testing mode.
// In testing mode:
// - the object is more tolerant of unrecognized response messages;
// - the connector continues working after seeing errors from its incoming
// receiver.
void EnableTestingMode();
private:
typedef std::map<uint64_t, MessageReceiver*> ResponderMap;
class HandleIncomingMessageThunk : public MessageReceiver {
public:
HandleIncomingMessageThunk(Router* router);
~HandleIncomingMessageThunk() override;
// MessageReceiver implementation:
bool Accept(Message* message) override;
private:
Router* router_;
};
bool HandleIncomingMessage(Message* message);
HandleIncomingMessageThunk thunk_;
FilterChain filters_;
Connector connector_;
SharedData<Router*> weak_self_;
MessageReceiverWithResponder* incoming_receiver_;
ResponderMap responders_;
uint64_t next_request_id_;
bool testing_mode_;
};
} // namespace internal
} // namespace mojo
#endif // MOJO_PUBLIC_CPP_BINDINGS_LIB_ROUTER_H_
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