Thanks for the idea, Scott. I don't know anything about MDC (yet), but
I'll look into it! :-) Ideally what I'd like is something of a cross
between a printf and an ODBC parameter binding. Each specified variable
piece of text would get it's own varbind, based on the delimited
conversion pattern. For example, if I write this:
myLog.debug("Host: <" + strHostXYZ + "> port: <" + intPortXYZ + ">
reported error: <" + strErrorXYZ + ">");
The conversion pattern would strip out the stuff in the brackets and put
each in its own SNMP varbind. That's what I thought the
DelimitedConversionPattern class would do for me. But, hey, I've got
the source, right? ;-)
Rgds,
Bret
> -----Original Message-----
> From: Scott Deboy [mailto:[EMAIL PROTECTED]
> Sent: Sunday, July 18, 2004 1:07 PM
> To: Log4J Users List
> Subject: RE: Anyone using SNMPTrapAppender?
>
> Wouldn setting the host name as an mdc entry and then using
> the mdc conversion pattern mechanism work?
>
> The thread that generates the events which require the
> hostname param should set the hostname MDC entry prior to
> generating events:
> MDC.put("hostname", "myhost");
>
> Any log entry generated on the thread after the MDC entry is
> set will automatically have the hostname entry. No need to
> specify it in the message text. Instead, you log your message:
> myLog.debug("my debug message");
>
> In the next version of log4j, a number of the network-based
> appenders support hostName and application params specified
> in the config file since they are so commonly needed.
>
> If set, these properties are provided with every event (no
> need to call mdc.put on each thread). Maybe smtpTrapAppender
> could be enhanced to provide this functionality as well.
>
> Arbitrary name/value pairs would still need set via MDC.
>
> Scott
> -----Original Message-----
> From: Schuhmacher, Bret [mailto:[EMAIL PROTECTED]
> Sent: Fri 7/16/2004 8:51 AM
> To: Log4J Users List
> Cc:
> Subject: Anyone using SNMPTrapAppender?
> I need a little push in the right direction, please...
>
> I have a question about using the DelimitedConversionPattern
> from inside my program that's doing the logging. Right now I
> have something like this:
> myLog.debug("my debug message from host " + strHostName);
>
> This writes a single string to the SNMP Trap appender like this:
> my deug message from host xyzhost
>
> Now I need to do variable bindings and I'm not sure how the
> actual log statement in the java source must change to
> accommodate the delimited conversion pattern. Should I
> delimit the log setting like this?
> myLog.debug("my debug message from host ;" + strHostName);
>
> this line puts a ";" in the log string so that, hopefully,
> the delimited conversion pattern will extract that as two
> strings - one containing "my debug message from host" and
> another with "xyzhost". Is this correct?
>
> If someone can merely supply me a line of working log code
> that uses the SNMPDelimitedConversionPattern and possibly the
> actual pattern from their rc or xml file I'd be really grateful!
>
> Thanks in advance!!
>
> Rgds,
>
> Bret
>
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