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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.
#include "chrome/browser/ash/arc/session/arc_disk_space_monitor.h"
#include "ash/public/cpp/notification_utils.h"
#include "base/logging.h"
#include "chrome/app/vector_icons/vector_icons.h"
#include "chrome/browser/ash/arc/arc_util.h"
#include "chrome/browser/ash/arc/session/arc_session_manager.h"
#include "chrome/browser/notifications/notification_display_service.h"
#include "chrome/browser/notifications/notification_display_service_factory.h"
#include "chrome/grit/generated_resources.h"
#include "chromeos/ash/components/dbus/spaced/spaced_client.h"
#include "chromeos/ash/components/demo_mode/utils/demo_session_utils.h"
#include "chromeos/ash/experiences/arc/arc_util.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/chromeos/resources/grit/ui_chromeos_resources.h"
#include "ui/message_center/public/cpp/notification.h"
#include "ui/message_center/public/cpp/notification_types.h"
#include "ui/message_center/public/cpp/notifier_id.h"
namespace arc {
namespace {
// Returns whether ArcDiskSpaceMonitor should be activated.
bool ShouldActivate() {
DCHECK(ArcSessionManager::Get());
DCHECK(ArcSessionManager::Get()->profile());
// Activate if and only if virtio-blk is used for /data.
return ShouldUseVirtioBlkData(
ArcSessionManager::Get()->profile()->GetPrefs());
}
} // namespace
ArcDiskSpaceMonitor::ArcDiskSpaceMonitor() {
ArcSessionManager::Get()->AddObserver(this);
}
ArcDiskSpaceMonitor::~ArcDiskSpaceMonitor() {
ArcSessionManager::Get()->RemoveObserver(this);
}
void ArcDiskSpaceMonitor::OnArcStarted() {
if (!ShouldActivate()) {
VLOG(1) << "Skipping Activation of ArcDiskSpaceMonitor because virtio-blk "
"is not used for /data";
return;
}
VLOG(1) << "ARC started. Activating ArcDiskSpaceMonitor.";
// Calling ScheduleCheckDiskSpace(Seconds(0)) instead of CheckDiskSpace()
// because ArcSessionManager::RequestStopOnLowDiskSpace() doesn't work if it
// is called directly inside OnArcStarted().
ScheduleCheckDiskSpace(base::Seconds(0));
}
void ArcDiskSpaceMonitor::OnArcSessionStopped(ArcStopReason stop_reason) {
if (!ShouldActivate()) {
return;
}
VLOG(1) << "ARC stopped. Deactivating ArcDiskSpaceMonitor.";
timer_.Stop();
}
void ArcDiskSpaceMonitor::ScheduleCheckDiskSpace(base::TimeDelta delay) {
timer_.Start(FROM_HERE, delay,
base::BindOnce(&ArcDiskSpaceMonitor::CheckDiskSpace,
weak_ptr_factory_.GetWeakPtr()));
}
void ArcDiskSpaceMonitor::CheckDiskSpace() {
ash::SpacedClient::Get()->GetFreeDiskSpace(
"/home/chronos/user",
base::BindOnce(&ArcDiskSpaceMonitor::OnGetFreeDiskSpace,
weak_ptr_factory_.GetWeakPtr()));
}
void ArcDiskSpaceMonitor::OnGetFreeDiskSpace(std::optional<int64_t> reply) {
if (!reply.has_value() || reply.value() < 0) {
LOG(ERROR) << "spaced::GetFreeDiskSpace failed. "
<< "Deactivating ArcDiskSpaceMonitor.";
return;
}
const int64_t free_disk_space = reply.value();
arc::ArcSessionManager* const arc_session_manager =
arc::ArcSessionManager::Get();
const ArcSessionManager::State state = arc_session_manager->state();
VLOG(1) << "ArcSessionManager::State:" << state
<< ", free_disk_space:" << free_disk_space;
if (state != ArcSessionManager::State::ACTIVE) {
LOG(WARNING) << "ARC is not active.";
// No need to call ScheduleCheckDiskSpace() because
// OnArcStarted() will trigger CheckDiskSpace() when ARC starts.
return;
}
if (free_disk_space < kDiskSpaceThresholdForStoppingArc) {
LOG(WARNING) << "Stopping ARC due to low disk space. free_disk_space:"
<< free_disk_space;
arc_session_manager->RequestStopOnLowDiskSpace();
// Show a post-stop warning notification.
MaybeShowNotification(/*is_pre_stop=*/false);
// ArcDiskSpaceMonitor will be deactivated after ARC is stopeed.
return;
}
if (free_disk_space < kDiskSpaceThresholdForPreStopNotification) {
// Show a pre-stop warning notification.
MaybeShowNotification(/*is_pre_stop=*/true);
ScheduleCheckDiskSpace(kDiskSpaceCheckIntervalShort);
} else {
ScheduleCheckDiskSpace(kDiskSpaceCheckIntervalLong);
}
if (on_get_free_disk_space_callback_for_testing_) {
std::move(on_get_free_disk_space_callback_for_testing_).Run();
}
}
void ArcDiskSpaceMonitor::MaybeShowNotification(bool is_pre_stop) {
if (is_pre_stop) {
if (!pre_stop_notification_last_shown_time_.is_null() &&
base::Time::Now() - pre_stop_notification_last_shown_time_ <
kPreStopNotificationReshowInterval) {
// Don't reshow a pre-stop warning notification yet.
return;
}
pre_stop_notification_last_shown_time_ = base::Time::Now();
}
if (ash::demo_mode::IsDeviceInDemoMode()) {
LOG(WARNING) << "Device is low on disk space, but the notification was "
<< "suppressed on a demo mode device.";
return;
}
const std::string notification_id = is_pre_stop
? kLowDiskSpacePreStopNotificationId
: kLowDiskSpacePostStopNotificationId;
const ash::NotificationCatalogName catalog_name =
is_pre_stop ? ash::NotificationCatalogName::kArcLowDiskSpacePreStop
: ash::NotificationCatalogName::kArcLowDiskSpacePostStop;
const int title_id =
is_pre_stop ? IDS_ARC_LOW_DISK_SPACE_PRE_STOP_NOTIFICATION_TITLE
: IDS_ARC_LOW_DISK_SPACE_POST_STOP_NOTIFICATION_TITLE;
const int message_id =
is_pre_stop ? IDS_ARC_LOW_DISK_SPACE_PRE_STOP_NOTIFICATION_MESSAGE
: IDS_ARC_LOW_DISK_SPACE_POST_STOP_NOTIFICATION_MESSAGE;
message_center::Notification notification = ash::CreateSystemNotification(
message_center::NOTIFICATION_TYPE_SIMPLE, notification_id,
l10n_util::GetStringUTF16(title_id),
l10n_util::GetStringUTF16(message_id),
l10n_util::GetStringUTF16(IDS_ARC_NOTIFICATION_DISPLAY_SOURCE),
/*origin_url=*/GURL(),
message_center::NotifierId(message_center::NotifierType::SYSTEM_COMPONENT,
kDiskSpaceMonitorNotifierId, catalog_name),
/*optional_fields=*/message_center::RichNotificationData(),
base::MakeRefCounted<message_center::HandleNotificationClickDelegate>(
base::BindRepeating([](std::optional<int> button_index) {})),
kNotificationStorageFullIcon,
message_center::SystemNotificationWarningLevel::CRITICAL_WARNING);
Profile* profile = arc::ArcSessionManager::Get()->profile();
NotificationDisplayServiceFactory::GetForProfile(profile)->Display(
NotificationHandler::Type::TRANSIENT, notification,
/*metadata=*/nullptr);
}
} // namespace arc
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