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// Copyright 2019 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef SRC_SYS_APPMGR_STORAGE_WATCHDOG_H_
#define SRC_SYS_APPMGR_STORAGE_WATCHDOG_H_
#include <fuchsia/io/c/fidl.h>
#include <lib/async/dispatcher.h>
#include <lib/zx/channel.h>
#include <string>
// StorageWatchdog can be used to observe the storage usage on a given
// partition, and when the storage usage reaches 95% the isolated component
// storage under a given path will be deleted.
class StorageWatchdog {
public:
StorageWatchdog(std::string path_to_watch, std::string path_to_clean)
: path_to_watch_(path_to_watch), path_to_clean_(path_to_clean) {}
void Run(async_dispatcher_t* dispatcher);
size_t GetStorageUsage();
void CheckStorage(async_dispatcher_t* dispatcher);
void PurgeCache();
protected:
virtual zx_status_t GetFilesystemInfo(zx_handle_t directory, fuchsia_io_FilesystemInfo* out_info);
private:
const std::string path_to_watch_;
const std::string path_to_clean_;
};
#endif // SRC_SYS_APPMGR_STORAGE_WATCHDOG_H_