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From "Simon Wallis" <mail...@wallis.ca>
Subject Re: Is there anything resembling a "WebServicesAppender"?
Date Wed, 01 Feb 2006 18:29:37 GMT
I looked at this a while back and wrote my own web services appender. I first wrote it to send
a fixed set of log parameters, but then you have a problem if you ever write exensions to
log4net and your set of parameters changes. You would also have to change your web service
methods each time. Then I tried to send over the log4net event object itself, but ran into
serialization issues. Maybe others got this to work, but I ended up scrapping this approach.

I found .NET Remoting to be so much easier to deal with. If you have a .NET client and .NET
server then you can use binary Remoting over TCP (as opposed to SOAP), which offers better
performance and you don't need to worry about serialization. To make it even easier, if you
look at the sample code in the log4net distribution, you will find a .NET Remoting server
and a full example. This server also uses log4net, so on the receiving end you use log4net
to log the events, meaning you can log them to files, databases, or whatever you want. 

I have been using this approach for almost a year now. I have a bunch of application servers
that use .NET Remoting appenders to log to a centralized cluster of "logging servers". These
logging servers run the .NET Remoting Server (I run it as an NT service), listen on a port
for incoming events, and when events are received it uses log4net to route the events to final
destination (usually a database).

I actually wrote my own .NET Remoting appender that would make the calls asynchronous, but
this was with 1.2.8, and I believe 1.2.9 has asynchronous built in with the .NET Remoting
appender. I think the only case where you would want to use a web service appender instead
of Remoting is either when your environment is not all .NET-based, or you can only open port
80 on your firewall (.NET remoting requires a port other than 80 to be open).


-----Original message-----
From: "Billy Barnum" bbarnum@spamcop.net
Date: Sun, 15 Jan 2006 23:30:18 -0800
To: log4net-user@logging.apache.org
Subject: Is there anything resembling a "WebServicesAppender"?

> I've gotten pretty familiar with the file, smtp, adonet, and eventlog
> appenders, and have even written my own simple extensions. Now I'm being
> asked to make log4net logging happen over the public internet from a .NET
> Winforms client app, and I'm on unfamiliar ground.
> The client is a .NET Winforms app that will do some work locally and hit up
> servers over http via .NET web services for other work, but log entries must
> be made to the central servers. My customer doesn't want to log locally and
> then have users email local logs; they want to see errors and info entries
> as they happen, or pretty soon thereafter. Ultimately, log entries are to be
> written to NTFS files a la FileAppender.
> I'm talking about something resembling a "Web Services Appender", methinks.
> Is there some relatively easy way to achieve this with RemotingAppender and
> an almost-empty server host in IIS that just passes everything through via a
> server-side log4net config file that names a FileAppender? Or is there
> another, better approach?
> I'm looking for general advice, samples, links to other resources - anything
> at all. Grateful for whatever tidbits I can get that don't take up too much
> of folks' time. Thanks in advance.
> -BillyB

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