Hi Remko, Thank you very much for the explanation. That was exactly what I needed. I think it is better if those information can be included the log4j2 documentation in the migrating from log4j 1.2 section because most of the applications are still using log4j 1.2.x and need to convert to log4j2. No need to add long descriptions but just adding feature mappings between log4j 1.2 and log4j2 is enough I think.
Regards, Chathura. On Fri, May 8, 2015 at 10:55 AM, Remko Popma <[email protected]> wrote: > Thanks for the additional detail. > With log4j-1.x, a custom appender may have been the best solution, but it > sounds like log4j2's built-in features provide all you need. > > If your application calls > ThreadContext.put("serviceId", getServiceId()); > ThreadContext.put("serviceName", getServiceName()); > // etc > > ...then if you configure this pattern in the ConsoleAppender layout: > <PatternLayout pattern="%d %p %m %X{serviceId} %X{serviceName}" /> > > ...you will see the values that your application put in the ThreadContext > map appear in the logs. > > This does not require a custom appender or custom log events. > > Sent from my iPhone > > On 2015/05/08, at 14:00, Chathura Priyankara <[email protected]> > wrote: > > Hi All, > > Thank you for the replies. > Currently I'm migrating a large application from log4j 1.2.17 to log4j 2.2. > That application has custom console appender which takes logging event and > create custom logging events with some additional application specific data > such as service id, service name etc. > Then it uses custom pattern layout to log those information. > Now I want to migrate this scenario to log4j2. > > Can you please provide a brief guidance on this ? > > Thanks! > Chathura. > > On Fri, May 8, 2015 at 4:00 AM, Remko Popma <[email protected]> wrote: > >> You may not need to write a custom appender. Have you looked at the >> ThreadContext map? Your application threads can put key-value pairs in that >> map, and following that, all log events generated by that thread will carry >> those key-value pairs. You can output the values with the %X pattern in >> your pattern layout. >> >> Remko >> >> Sent from my iPhone >> >> On 2015/05/07, at 22:14, Chathura Priyankara <[email protected]> >> wrote: >> >> Hi Beharooz, >> >> I want to log some application specific data such as domain, userid etc >> using custom console appender. >> Is this possible ? >> >> Thanks! >> >> On Thu, May 7, 2015 at 5:20 PM, Behrooz Nobakht <[email protected]> wrote: >> >>> Hi, >>> >>> What is the customization that you wanna apply? >>> >>> Cheers, >>> Behrooz >>> >>> >>> On Thu, May 7, 2015 at 1:26 PM, Chathura Priyankara < >>> [email protected]> wrote: >>> >>>> Hi devs, >>>> >>>> I want to create a custom console appender for log4j2 but I cannot find >>>> any resource or sample about this. The only resource [1] is not enough for >>>> this. >>>> >>>> [1] >>>> https://logging.apache.org/log4j/2.x/manual/extending.html#Appenders >>>> >>>> Can anyone provide me a sample for this ? (both configuration and >>>> custom appender) >>>> >>>> Any help is appreciated. >>>> >>>> Thanks! >>>> >>>> -- >>>> Chathura Priyankara, >>>> Faculty of Information Technology, >>>> University of Moratuwa. >>>> Blog : www.codeoncloud.blogspot.com >>>> >>> >>> >>> >>> -- >>> -- Behrooz Nobakht >>> >> >> >> >> -- >> Chathura Priyankara, >> Faculty of Information Technology, >> University of Moratuwa. >> Blog : www.codeoncloud.blogspot.com >> >> > > > -- > Chathura Priyankara, > Faculty of Information Technology, > University of Moratuwa. > Blog : www.codeoncloud.blogspot.com > > -- Chathura Priyankara, Faculty of Information Technology, University of Moratuwa. Blog : www.codeoncloud.blogspot.com
