File Move with in time limits [Answered]RSS

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  jayakumarvin...

  Member

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  262 Posts

  File Move with in time limits

  Jul 22, 2017 07:07 PM|jayakumarvinayagam|LINK

  HI All,

  I have a requirement like to move/copy a file from folder to another folder with in time limits.

  Folder: Input

   file Name: sample.txt

  Folder: Output

  the same sample.txt,

  just assume that sample.txt has 500mb size, it takes 5 minutes to complete, but I wanna set time out for 3 minutes.

  if it takes more than 3minutes, stop the moving process, like sample.txt file resides in same input folder. 

  Thanks, 

• • Reply
  JBetancourt

  Participant

  1370 Points

  608 Posts

  Re: File Move with in time limits

  Jul 23, 2017 04:04 AM|JBetancourt|LINK

  Before giving you the answer consider that moving files in the same drive doesn't transfer the data, only affect the directory entries in the hard drive, so it would be very fast,

  Other simpler option you can implement is to determine if copying/moving the file based on the file size, that way you dont have to wait for the timeout.

  Well here is the code for copying with timeout, this one is implemented using an async method with a timed cancellation token:

  static async Task Copy(string destFilePath, string sourceFilePath, int timeoutSecs)
  {
      var cancellationSource = new CancellationTokenSource(TimeSpan.FromSeconds(timeoutSecs));
  
      using (var dest = File.Create(destFilePath))
      using (var src = File.OpenRead(sourceFilePath))
      {
          await src.CopyToAsync(dest, 81920, cancellationSource.Token);
      }
  }

  then you can do:

  try
  {
      await Copy(@"c:\temp\test2.bin", @"c:\temp\test.bin", 60);
      Console.WriteLine("finished..");
  }
  catch (OperationCanceledException ex)
  {
      Console.WriteLine("cancelled..");
  }
  catch (Exception ex)
  {
      Console.WriteLine("error..");
  }

  thanks

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• • Reply
  jayakumarvin...

  Member

  583 Points

  262 Posts

  Re: File Move with in time limits

  Jul 25, 2017 05:49 AM|jayakumarvinayagam|LINK

  Thanks, I updated little bit in order to accomplish my task. 

  I will remove the file in the source if it successfully copied from source to destination.

  If it canceled in between some buffered content in the destination folder, so I will remove those file if it not fully copied from the source.

  var fileMoveStatus = await _fileCopyProcess.Copy(source, destination, 100);
  if (fileMoveStatus.isMoved)
  {
     // remove file from source
  }else
  {
    // uncopied file removed from destination
  }
  

  public async Task<(bool isMoved, string fileName)> Copy(string sourceFilePath, string destFilePath, int timeoutSecs)
          {
              bool isMoved = false;
              string sourceFileName = string.Empty;
              string fileName = string.Empty;
              try
              {
                  if (File.Exists(sourceFilePath))
                  {
                      sourceFileName = Path.GetFileName(sourceFilePath);
                      await _fileCopy.CopyAsync(sourceFilePath, destFilePath, timeoutSecs);
                      fileName = Path.GetFileName(destFilePath);
                      isMoved = true;
                  }
              }
              catch (OperationCanceledException ex)
              {
                  fileName = sourceFileName; ;
              }
              catch (Exception ex)
              {
                  fileName = sourceFileName;
              }
              return (isMoved, fileName);
          }

  public async Task CopyAsync(string sourceFilePath, string destFilePath, int timeoutSecs)
          {
              var cancellationTokenSource = new CancellationTokenSource(TimeSpan.FromSeconds(timeoutSecs));
              using (var dest = File.Create(destFilePath))
              using (var src = File.OpenRead(sourceFilePath))
              {
                  await src.CopyToAsync(dest, 81920, cancellationTokenSource.Token);
              }
          }

  
  
  Thanks,