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//
// Copyright (C) 2020 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#ifndef UPDATE_ENGINE_AOSP_CLEANUP_PREVIOUS_UPDATE_ACTION_H_
#define UPDATE_ENGINE_AOSP_CLEANUP_PREVIOUS_UPDATE_ACTION_H_
#include <chrono> // NOLINT(build/c++11) -- for merge times
#include <memory>
#include <string>
#include <string_view>
#include <brillo/message_loops/message_loop.h>
#include <libsnapshot/snapshot.h>
#include <libsnapshot/snapshot_stats.h>
#include "update_engine/common/action.h"
#include "update_engine/common/boot_control_interface.h"
#include "update_engine/common/cleanup_previous_update_action_delegate.h"
#include "update_engine/common/error_code.h"
#include "update_engine/common/prefs_interface.h"
namespace chromeos_update_engine {
class CleanupPreviousUpdateAction;
template <>
class ActionTraits<CleanupPreviousUpdateAction> {
public:
typedef NoneType InputObjectType;
typedef NoneType OutputObjectType;
};
// On Android Virtual A/B devices, clean up snapshots from previous update
// attempt. See DynamicPartitionControlAndroid::CleanupSuccessfulUpdate.
class CleanupPreviousUpdateAction : public Action<CleanupPreviousUpdateAction> {
public:
CleanupPreviousUpdateAction(
PrefsInterface* prefs,
BootControlInterface* boot_control,
android::snapshot::ISnapshotManager* snapshot,
CleanupPreviousUpdateActionDelegateInterface* delegate);
~CleanupPreviousUpdateAction();
void PerformAction() override;
void SuspendAction() override;
void ResumeAction() override;
void TerminateProcessing() override;
void ActionCompleted(ErrorCode error_code) override;
std::string Type() const override;
static std::string StaticType();
typedef ActionTraits<CleanupPreviousUpdateAction>::InputObjectType
InputObjectType;
typedef ActionTraits<CleanupPreviousUpdateAction>::OutputObjectType
OutputObjectType;
private:
PrefsInterface* prefs_;
BootControlInterface* boot_control_;
android::snapshot::ISnapshotManager* snapshot_;
CleanupPreviousUpdateActionDelegateInterface* delegate_;
std::unique_ptr<android::snapshot::AutoDevice> metadata_device_;
bool running_{false};
bool cancel_failed_{false};
unsigned int last_percentage_{0};
android::snapshot::ISnapshotMergeStats* merge_stats_;
brillo::MessageLoop::TaskId scheduled_task_{brillo::MessageLoop::kTaskIdNull};
// Helpers for task management.
void AcknowledgeTaskExecuted();
void CheckTaskScheduled(std::string_view name);
void StopActionInternal();
void StartActionInternal();
void ScheduleWaitBootCompleted();
void WaitBootCompletedOrSchedule();
void ScheduleWaitMarkBootSuccessful();
void CheckSlotMarkedSuccessfulOrSchedule();
void ScheduleWaitForMerge();
void WaitForMergeOrSchedule();
void InitiateMergeAndWait();
void ReportMergeStats();
// Callbacks to ProcessUpdateState.
bool OnMergePercentageUpdate();
bool BeforeCancel();
};
} // namespace chromeos_update_engine
#endif // UPDATE_ENGINE_AOSP_CLEANUP_PREVIOUS_UPDATE_ACTION_H_
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