naiveproxy/base/fuchsia/fidl_interface_request.h
2018-08-11 05:35:24 +00:00

77 lines
2.5 KiB
C++

// Copyright 2018 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 BASE_FUCHSIA_FIDL_INTERFACE_REQUEST_H_
#define BASE_FUCHSIA_FIDL_INTERFACE_REQUEST_H_
#include "base/base_export.h"
#include "base/fuchsia/scoped_zx_handle.h"
#include "base/macros.h"
#include "base/strings/string_piece.h"
namespace fidl {
template <typename Interface>
class InterfaceRequest;
template <typename Interface>
class InterfacePtr;
template <typename Interface>
class SynchronousInterfacePtr;
} // namespace fidl
namespace base {
namespace fuchsia {
// A request for a FIDL interface. FidlInterfaceRequest contains interface name
// and channel handle. Interface consumers create FidlInterfaceRequest when they
// need to connect to a service. FidlInterfaceRequest is resolved when the
// channel is passed to the service implementation, e.g. through
// ComponentContext.
class BASE_EXPORT FidlInterfaceRequest {
public:
template <typename Interface>
explicit FidlInterfaceRequest(fidl::InterfaceRequest<Interface> request)
: FidlInterfaceRequest(
Interface::Name_,
ScopedZxHandle::FromZxChannel(request.TakeChannel())) {}
// Creates a new request for |Interface| and binds the client end to the
// |stub|. |stub| can be used immediately after the request is created, even
// before the request is passed to the service that implements the interface.
template <typename Interface>
explicit FidlInterfaceRequest(fidl::InterfacePtr<Interface>* stub)
: FidlInterfaceRequest(stub->NewRequest()) {}
template <typename Interface>
explicit FidlInterfaceRequest(fidl::SynchronousInterfacePtr<Interface>* stub)
: FidlInterfaceRequest(stub->NewRequest()) {}
FidlInterfaceRequest(FidlInterfaceRequest&&);
~FidlInterfaceRequest();
bool is_valid() const { return interface_name_ && channel_; }
const char* interface_name() const { return interface_name_; }
// Extracts the channel handle to be passed to service implementation. The
// request becomes invalid after this call, i.e. TakeChannel() can be called
// only once.
ScopedZxHandle TakeChannel();
private:
FidlInterfaceRequest(const char* interface_name, ScopedZxHandle channel);
const char* interface_name_;
ScopedZxHandle channel_;
DISALLOW_COPY_AND_ASSIGN(FidlInterfaceRequest);
};
} // namespace fuchsia
} // namespace base
#endif // BASE_FUCHSIA_FIDL_INTERFACE_REQUEST_H_