croslog/file_change_watcher.h

// Copyright 2020 The Chromium OS 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 CROSLOG_FILE_CHANGE_WATCHER_H_
#define CROSLOG_FILE_CHANGE_WATCHER_H_

#include "base/callback.h"
#include "base/files/file_path.h"
#include "base/memory/singleton.h"

namespace croslog {

class InotifyReader;

class FileChangeWatcher {
 public:
  static FileChangeWatcher* GetInstance();

  // Add a handler to retrieve file change events.
  virtual bool AddWatch(const base::FilePath& path, base::Closure callback) = 0;
  // Remove a handler to retrieve file change events.
  virtual void RemoveWatch(const base::FilePath& path) = 0;

 protected:
  FileChangeWatcher();

 private:
  DISALLOW_COPY_AND_ASSIGN(FileChangeWatcher);
};

}  // namespace croslog

#endif  // CROSLOG_FILE_CHANGE_WATCHER_H_