/// <summary>
/// 执行下载，并标记状态
/// </summary>
/// <param name="localFilePathes"></param>
/// <param name="url"></param>
/// <param name="state"></param>
/// <param name="userName"></param>
/// <param name="password"></param>
/// <param name="IsOverwrite"></param>
/// <param name="throwException"></param>
private bool DoDownload(List <string> localFilePathes, string url, FileWritingState state, string userName = "******", string password = "******", bool IsOverwrite = false, bool throwException = false)
{
// state.IsWriting = true;
lock (downLocker)
{
//内有log记录
if (NetUtil.FtpDownload(url, state.LocalPath, userName, password, IsOverwrite, throwException))
{
state.Update(url, true);
if (state.IsAvailable())
{
localFilePathes.Add(state.LocalPath);
return(true);
}
}
}
// state.IsWriting = false;
return(false);
}
/// <summary>
/// 尝试下载一个。
/// </summary>
/// <param name="userName"></param>
/// <param name="password"></param>
/// <param name="IsOverwrite"></param>
/// <param name="throwException"></param>
/// <param name="localFilePathes"></param>
/// <param name="url"></param>
/// <param name="localPath"></param>
private bool TryDownloadOne(List <string> localFilePathes, string url, string localPath, string userName = "******", string password = "******", bool IsOverwrite = false, bool throwException = false)
{
bool result = false;
if (LocaFileWritingManager.Contains(localPath))
{
var state = LocaFileWritingManager.Get(localPath);
state.WaitWrting();
if (state.IsAvailable())
{
log.Info("文件 " + localPath + " 可用");
localFilePathes.Add(localPath);
}
else
{
if (!state.IsRegisted(url))
{
log.Info(localPath + " 获得新来源 " + url);
state.Regist(url);
}
if (!state.IsWrited(url))
{
log.Info("尝试从 " + url + " 下载 " + localPath + "");
result = DoDownload(localFilePathes, url, state, userName, password, IsOverwrite, throwException);
}
}
}
else
{
var state = new FileWritingState(localPath);
state.Regist(url);
log.Info("第一次下载 " + url + " 到 " + localPath + "");
LocaFileWritingManager.Add(localPath, state);
result = DoDownload(localFilePathes, url, state, userName, password, IsOverwrite, throwException);
}
return(result);
}
