/// <summary>
/// 初始化
/// </summary>
public void Init()
{
lock (_cacheFileLibraryContent)
{
//todo 读取缓存库
if (!_isInit)
{
_isInit = true;
if (!Utility.FileUtil.IsFileExists(GetCacheLibraryFilePath()))
{
return;
}
var libraryInfo = File.ReadAllLines(GetCacheLibraryFilePath());
foreach (var line in libraryInfo)
{
var entity = FileCacheEntity.Deserialization(line);
_cacheFileLibraryContent.Add(_getKey(entity.Url, entity.FilePath), entity);
}
_clearCacheLibrary();
}
}
}
private void _addOrUpdateCache(DownloadUnitInfo info)
{
_sb.Clear();
var cacheTime = (ulong)DateTime.Now.Ticks;
ulong cacheExpiredTime = 0;
if (info.CacheExpiredDay > 0)
{
DateTime centuryBegin = new DateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day + CacheExpiredDay);
cacheExpiredTime = (ulong)centuryBegin.Ticks;
}
var expiredTime = cacheExpiredTime;
if (!_hasCache(info))
{
_cacheFileLibraryContent.Add(_getKey(info), new FileCacheEntity()
{
Url = info.Url,
FilePath = Utility.FileUtil.UpdatePathDirectorySeparator(Path.Combine(info.SavePath, info.FileName)),
CacheTime = cacheTime,
ExpiredTime = expiredTime
});
}
else
{
//更新缓存的缓存时间和过期时间
_cacheFileLibraryContent[_getKey(info)].CacheTime = cacheTime;
_cacheFileLibraryContent[_getKey(info)].ExpiredTime = expiredTime;
}
foreach (var cacheEntity in _cacheFileLibraryContent)
{
_sb.AppendLine(FileCacheEntity.Serialization(cacheEntity.Value));
}
File.WriteAllText(GetCacheLibraryFilePath(), _sb.ToString());
}