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
