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// Copyright 2022 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_MOJO_SERVICE_MANAGER_FAKE_MOJO_SERVICE_MANAGER_H_
#define CHROMEOS_ASH_COMPONENTS_MOJO_SERVICE_MANAGER_FAKE_MOJO_SERVICE_MANAGER_H_
#include <string>
#include <vector>
#include "base/component_export.h"
#include "chromeos/ash/components/mojo_service_manager/mojom/mojo_service_manager.mojom.h"
#include "mojo/public/cpp/bindings/receiver_set.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "mojo/public/cpp/bindings/remote_set.h"
namespace ash::mojo_service_manager {
// Provides fake implementation of the service manager for testing. It also
// overrides the global service manager connection and reset it when destructed.
//
// The behaviors are different from the real service:
// * No permission checking. A fake identity can be set when binding the mojo
// remote. It will be used as the identity of owner or requester.
// * Register always succeeds, except that the services has already been
// registered.
// * Request always succeeds. Timeout is ignored (always wait forever).
// * Query returns "not found" if the service is not yet registered / requested,
// otherwise returns the state of the service.
// * The ServiceObserver can receive all the event (no permission checking).
//
class COMPONENT_EXPORT(CHROMEOS_MOJO_SERVICE_MANAGER) FakeMojoServiceManager
: public chromeos::mojo_service_manager::mojom::ServiceManager {
public:
FakeMojoServiceManager();
FakeMojoServiceManager(FakeMojoServiceManager&) = delete;
FakeMojoServiceManager& operator=(FakeMojoServiceManager&) = delete;
~FakeMojoServiceManager() override;
// Adds a new pipe and pass the pending remote. The identity of remote will
// be bound to |security_context|.
mojo::PendingRemote<chromeos::mojo_service_manager::mojom::ServiceManager>
AddNewPipeAndPassRemote(const std::string& security_context);
private:
// Keeps all the objects related to a mojo service.
struct ServiceState {
ServiceState();
~ServiceState();
// The pending requests to be sent after the service is available.
std::vector<
std::pair<chromeos::mojo_service_manager::mojom::ProcessIdentityPtr,
mojo::ScopedMessagePipeHandle>>
pending_requests;
// The owner of the service.
chromeos::mojo_service_manager::mojom::ProcessIdentityPtr owner;
// The mojo remote to the service provider.
mojo::Remote<chromeos::mojo_service_manager::mojom::ServiceProvider>
service_provider;
};
// chromeos::mojo_service_manager::mojom::ServiceManager overrides.
void Register(const std::string& service_name,
mojo::PendingRemote<
chromeos::mojo_service_manager::mojom::ServiceProvider>
service_provider) override;
void Request(const std::string& service_name,
std::optional<base::TimeDelta> timeout,
mojo::ScopedMessagePipeHandle receiver) override;
void Query(const std::string& service_name, QueryCallback callback) override;
void AddServiceObserver(
mojo::PendingRemote<
chromeos::mojo_service_manager::mojom::ServiceObserver> observer)
override;
// Handles disconnection from service providers.
void ServiceProviderDisconnectHandler(const std::string& service_name);
// Sends service event to all the observers.
void SendServiceEvent(
chromeos::mojo_service_manager::mojom::ServiceEventPtr event);
// The receiver set to provide the fake service manager.
mojo::ReceiverSet<chromeos::mojo_service_manager::mojom::ServiceManager,
chromeos::mojo_service_manager::mojom::ProcessIdentityPtr>
receiver_set_;
// The map of the service name to the service state.
std::map<std::string, ServiceState> service_map_;
// The remote set for the service observer.
mojo::RemoteSet<chromeos::mojo_service_manager::mojom::ServiceObserver>
service_observers_;
};
} // namespace ash::mojo_service_manager
#endif // CHROMEOS_ASH_COMPONENTS_MOJO_SERVICE_MANAGER_FAKE_MOJO_SERVICE_MANAGER_H_
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