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/*
* Copyright (C) 2017 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 ANDROID_INSTALLD_CACHE_TRACKER_H
#define ANDROID_INSTALLD_CACHE_TRACKER_H
#include <memory>
#include <string>
#include <queue>
#include <sys/types.h>
#include <sys/stat.h>
#include <android-base/macros.h>
#include <cutils/multiuser.h>
#include "CacheItem.h"
namespace android {
namespace installd {
/**
* Cache tracker for a single UID. Each tracker is used in two modes: first
* for loading lightweight "stats", and then by loading detailed "items"
* which can then be purged to free up space.
*/
class CacheTracker {
public:
CacheTracker(userid_t userId, appid_t appId, const std::string& uuid);
~CacheTracker();
std::string toString();
void addDataPath(const std::string& dataPath);
void loadStats();
void loadItems();
void ensureItems();
int getCacheRatio();
int64_t cacheUsed;
int64_t cacheQuota;
std::vector<std::shared_ptr<CacheItem>> items;
private:
userid_t mUserId;
appid_t mAppId;
bool mItemsLoaded;
const std::string& mUuid;
std::vector<std::string> mDataPaths;
bool loadQuotaStats();
void loadItemsFrom(const std::string& path);
DISALLOW_COPY_AND_ASSIGN(CacheTracker);
};
} // namespace installd
} // namespace android
#endif // ANDROID_INSTALLD_CACHE_TRACKER_H
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