How to capture process StandardError stream in controller RSS

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  kobruleht

  Member

  589 Points

  463 Posts

  How to capture process StandardError stream in controller

  Mar 25, 2012 11:56 AM|LINK

  Code below is used for backup. pg_dump never finishes, cpu usage is 0%. If line

              process.StartInfo.RedirectStandardError = true;

  is removed, code works ok but error result cannot captured. It looks like deadlock.

  How to get error info writtent to stderr by pg_dump ?

  [Authorize]
  public class BackupController : ControllerBase
      {
          [AcceptVerbs(HttpVerbs.Get)]
          public FileStreamResult Backup()
          {
              var process = new Process();
              process.StartInfo.FileName = "c:\\Program Files\\PostgreSql\\9.1\\bin\\pg_dump.exe";
              process.StartInfo.UseShellExecute = false;
              process.StartInfo.RedirectStandardOutput = true;
              // todo: why if this line is present, pg_dump never finishes
              process.StartInfo.RedirectStandardError = true;
              process.EnableRaisingEvents = true;
              process.Exited += (sender, e) =>
              {
                  Writelog( process.StandardError.ReadToEnd() );
              };
              Server.ScriptTimeout = 1 * 60 * 60;
              process.Start();
              return new FileStreamResult(process.StandardOutput.BaseStream, "application/backup");
      }
  }

  Microsoft Community Contributor
  • Edited by kobruleht on Mar 25, 2012 11:56 AM