private static void Execute()
{
DateTime now = DateTime.Now;
TimeSpan timeout = Initializer.SessionConfig.Timeout.Add(TimeSpan.FromMinutes(5)); // 多加 5 分钟
StringBuilder s = new StringBuilder();
foreach (string filePath in Directory.GetFiles(Initializer.TempPath, "*.dat"))
{
if (File.Exists(filePath) == false)
{
continue;
}
FileInfo file = new FileInfo(filePath);
bool delete = file.LastAccessTime.Add(timeout) < now;
if (delete)
{
s.AppendLine(filePath);
RetryFile.Delete(filePath);
// 删除内存中的用户锁对象，以免内存泄露
string sessionId = FileStore.GetSessionId(filePath);
UserLock.XInstance.RemoveLock(sessionId);
}
}
if (s.Length > 0)
{
string message = "XSession.Modules.FileCleanTask 已清理文件:\r\n" + s.ToString();
WinLogger.WriteInfo(message);
}
}
public static void DeleteFile(string sessionId)
{
string filePath = GetSessionFilePath(sessionId);
object lockObject = SidLock.Instance.GetLock(sessionId);
lock ( lockObject ) {
if (File.Exists(filePath))
{
RetryFile.Delete(filePath);
}
}
SidLock.Instance.RemoveLock(sessionId);
}
public static void SaveToFile(byte[] bytes, string sessionId)
{
if (bytes == null)
{
return;
}
string filePath = GetSessionFilePath(sessionId);
object lockObject = SidLock.Instance.GetLock(sessionId);
lock ( lockObject ) {
RetryFile.Write(filePath, bytes);
File.SetLastAccessTime(filePath, DateTime.Now);
}
}
public static byte[] ReadFile(string sessionId, bool checkTimeout)
{
string filePath = GetSessionFilePath(sessionId);
object lockObject = SidLock.Instance.GetLock(sessionId);
lock ( lockObject ) {
if (File.Exists(filePath))
{
DateTime now = DateTime.Now;
if (checkTimeout)
{
// 从文件加载时，检查数据是否已过期
DateTime time = File.GetLastAccessTime(filePath);
// Session数据已过期
if (time.Add(Initializer.SessionConfig.Timeout) < now)
{
return(null);
}
}
byte[] bytes = RetryFile.Read(filePath);
if (checkTimeout)
{
File.SetLastAccessTime(filePath, now);
}
return(bytes);
}
else
{
return(null);
}
}
}
