Perhaps the FileAppender can be enhanced to allow the underlying FileStream to
be opened by an inheritor:
// example code only...will not compile because CreateFileStream does not exist
in FileAppender
public class CustomFileStreamFileAppender : FileAppender
{
// called from OpenFile method
public override FileStream CreateFileStream(string fileName, FileMode
fileMode, FileAccess fileAccess, FileShare fileShare)
{
return new FileStream(fileName ,FileMode.Append, FileAccess.Write,
FileShare.ReadWrite);
}
}
----- Original Message ----
From: Frogg <[EMAIL PROTECTED]>
To: [email protected]
Sent: Thursday, April 5, 2007 9:25:01 AM
Subject: Re: FileAppender ExclusiveLock workaround (Not MinimalLock)
Thanks for the suggestion, I tried to add this to my code however it doesnt
seem to work, I may be missing some initialization command somewhere.... It
will create the log file but it will not input any text into it.
Ron Grabowski wrote:
>
> Have you tried something like this:
>
> // untested
> FileAppender fileAppender = new FileAppender();
> fileAppender.Writer =
> new QuietTextWriter(
> new StreamWriter(
> new
> FileStream("logs.txt",FileMode.Append,FileAccess.Write,FileShare.ReadWrite)),
> new OnlyOnceErrorHandler());
>
> ----- Original Message ----
> From: Frogg <[EMAIL PROTECTED]>
> To: [email protected]
> Sent: Wednesday, April 4, 2007 4:31:05 PM
> Subject: FileAppender ExclusiveLock workaround (Not MinimalLock)
>
>
> Hello,
>
> We used to use a really old version of log4net (1.2.03) but have since
> upgraded to 1.2.10. With the old log4net we created a custom FileAppender
> so that different application domains could log to the same file (this was
> before the days of MinimalLock). Basically, what we did was to override
> the
> OpenFile method to open the file stream in share mode, thus allowing many
> processes to write to the file at the same time.
>
> This is how the code looked that worked with the old log4net dll:
>
> ==================Code c#=========================
> protected override void OpenFile(string rawFileName, bool append)
> {
> lock(this)
> {
> // Release any current configuration and prepare for new.
> Reset();
>
> // Make THIS debuggable at least.
> LogLog.Debug(
> string.Format(
> "CustomFileAppender: Opening file for SHARED writing[{0}]
> append [{1}]
> ",fileName, append ) );
>
> // Create the directory if needed
> Directory.CreateDirectory((new FileInfo(fileName)).DirectoryName);
>
> // Open the file to allow reading and writing WHILE OPEN
> FileStream fs = new
> FileStream(fileName,FileMode.Append,FileAccess.Write,FileShare.ReadWrite);
>
> // and store for use in the base class
> SetQWForFiles(new StreamWriter(fs));
>
> // save the name and append settings
> base.File = fileName;
> base.AppendToFile = append;
>
> // and write out any header details
> WriteHeader();
> }
> ==============End Code======================
>
> When we upgraded to the 1.2.10 this code no longer worked. I tried using
> MinimalLock instead of the above code but that has the unfortunate side
> effects of being very slow(Lock, Unlock, Lock, Unlock, etc) and allowing
> some other process to maintain an exclusive lock on the file (no matter
> how
> short of time), someone other than the logger (for example, someone is
> viewing the log file, the application is not able to log events because
> that
> person viewing got a writer lock).
>
> I would like to be able to redo the code above to work with 1.2.10 but my
> attempts thus far have been unsuccessfull, if anyone has any ideas that
> may
> put me on the right track I would be greatly appreciative.
>
> Thanks,
> --
> View this message in context:
> http://www.nabble.com/FileAppender-ExclusiveLock-workaround-%28Not-MinimalLock%29-tf3528119.html#a9845029
> Sent from the Log4net - Users mailing list archive at Nabble.com.
>
>
>
>
>
>
--
View this message in context:
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Sent from the Log4net - Users mailing list archive at Nabble.com.
