private void TimerAction(object o)
{
var tc = DateTime.Now;
try
{
_backtimer.Change(Timeout.Infinite, Timeout.Infinite);
if (_queueWriter != null && !this._isdispose)
{
_queueWriter.Flush();
}
if (!IsRuning && _queueReader != null)
{
new Action(ProcessQueue).BeginInvoke(null, null);
}
SaveConfig();
}
finally
{
_backtimer.Change((int)Math.Max(1000 - (DateTime.Now.Subtract(tc)).TotalMilliseconds, 0), 0);
}
}
public LocalFileQueue(string queuename, string queuefilepath, bool canwrite = true, bool canread = true)
{
if (string.IsNullOrWhiteSpace(queuename))
{
throw new ArgumentNullException("queuename");
}
QueueName = queuename;
if (string.IsNullOrWhiteSpace(queuefilepath))
{
throw new ArgumentNullException("queuefilepath");
}
QueueFilePath = queuefilepath;
if (!File.Exists(queuefilepath))
{
FileInfo file = new FileInfo(queuefilepath);
if (!file.Directory.Exists)
{
try
{
file.Directory.Create();
}
catch (Exception ex)
{
throw new Exception("创建文件夹失败:" + file.Directory.FullName, ex);
}
}
}
if (canwrite)
{
//由于文件写是独占式的，当程序快速重启时，文件可能未及时释放
int trytimes = 0;
while (true)
{
try
{
//_queueWriter = ObjTextWriter.CreateWriter(queuefilepath, ObjTextReaderWriterEncodeType.jsonbuf);
_queueWriter = ObjTextWriter.CreateWriter(queuefilepath, ObjTextReaderWriterEncodeType.entitybuf);
_queueWriter.Flush();
break;
}
catch (Exception ex)
{
trytimes++;
if (trytimes >= 3)
{
throw ex;
}
Thread.Sleep(1000 * trytimes);
}
}
}
if (canread)
{
while (true)
{
if (File.Exists(queuefilepath))
{
break;
}
Thread.Sleep(1000);
}
_queueReader = ObjTextReader.CreateReader(queuefilepath);
FileInfo finfo = new FileInfo(queuefilepath);
QueueCfgFile = finfo.Directory.FullName + "\\" + queuename + ".cfg";
if (File.Exists(QueueCfgFile))
{
_logger = LJC.FrameWork.Comm.SerializerHelper.DeSerializerFile <LocalFileQueueCfg>(QueueCfgFile, true);
if (_logger.LastPos > 0)
{
_queueReader.SetPostion(_logger.LastPos);
}
}
else
{
_logger = new LocalFileQueueCfg();
_logger.LastChageTime = DateTime.Now;
_logger.QueueFile = queuefilepath;
SaveConfig();
}
}
_backtimer = new Timer(new TimerCallback(TimerAction), null, 0, 0);
}