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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROMEOS_ASH_COMPONENTS_DBUS_SENESCHAL_SENESCHAL_CLIENT_H_
#define CHROMEOS_ASH_COMPONENTS_DBUS_SENESCHAL_SENESCHAL_CLIENT_H_
#include "base/component_export.h"
#include "base/observer_list_types.h"
#include "chromeos/ash/components/dbus/seneschal/seneschal_service.pb.h"
#include "chromeos/dbus/common/dbus_callback.h"
#include "chromeos/dbus/common/dbus_client.h"
#include "dbus/object_proxy.h"
namespace ash {
// SeneschalClient is used to communicate with Seneschal, which manages
// 9p file servers.
class COMPONENT_EXPORT(SENESCHAL) SeneschalClient
: public chromeos::DBusClient {
public:
class Observer : public base::CheckedObserver {
public:
// Called when Seneschal service exits.
virtual void SeneschalServiceStopped() = 0;
// Called when Seneschal service is either started or restarted.
virtual void SeneschalServiceStarted() = 0;
};
// Adds an observer.
virtual void AddObserver(Observer* observer) = 0;
// Removes an observer if added.
virtual void RemoveObserver(Observer* observer) = 0;
SeneschalClient(const SeneschalClient&) = delete;
SeneschalClient& operator=(const SeneschalClient&) = delete;
~SeneschalClient() override;
// Factory function, creates a new instance and returns ownership.
// For normal usage, access the singleton via Get().
static std::unique_ptr<SeneschalClient> Create();
// Registers |callback| to run when the Concierge service becomes available.
// If the service is already available, or if connecting to the name-owner-
// changed signal fails, |callback| will be run once asynchronously.
// Otherwise, |callback| will be run once in the future after the service
// becomes available.
virtual void WaitForServiceToBeAvailable(
dbus::ObjectProxy::WaitForServiceToBeAvailableCallback callback) = 0;
// Shares a path in the Chrome OS host with the container.
// |callback| is called after the method call finishes.
virtual void SharePath(
const vm_tools::seneschal::SharePathRequest& request,
chromeos::DBusMethodCallback<vm_tools::seneschal::SharePathResponse>
callback) = 0;
// Unshares a path in the Chrome OS host with the container.
// |callback| is called after the method call finishes.
virtual void UnsharePath(
const vm_tools::seneschal::UnsharePathRequest& request,
chromeos::DBusMethodCallback<vm_tools::seneschal::UnsharePathResponse>
callback) = 0;
// Creates and initializes the global instance. |bus| must not be null.
static void Initialize(dbus::Bus* bus);
// Creates and initializes a fake global instance if not already created.
static void InitializeFake();
// Destroys the global instance which must have been initialized.
static void Shutdown();
// Returns the global instance if initialized. May return null.
static SeneschalClient* Get();
protected:
// Initialize() should be used instead.
SeneschalClient();
};
} // namespace ash
#endif // CHROMEOS_ASH_COMPONENTS_DBUS_SENESCHAL_SENESCHAL_CLIENT_H_
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