Hello Holger, Thank you for your response. Bender Heri has described a similar use case on the log4j-user list. I believe that the problem you describe, namely separation of logging (per thread), can be accomplished by means other than repository selectors. Assuming a new appender, say MultiAppender, was capable of embedding and managing other appenders per thread basis, you would no longer need context selectors. More importantly, most of the work would be done by MultiAppender. You would only need to configure it in logback.xml and push MDC values at the beginning of each thread. (I am making the assumption that the MDC can be used to distinguish threads.) Needless to say, there is no intention of removing support for context selectors. Mense, Holger wrote:
Hello,
I am in the process of fixing bugs related to context selectors in logback. However, while sometime ago I thought that context selectors were the wave of the future, I am increasingly skeptical about their usefulness (of context selectors).
If you are using context selectors, could you please explain why?
I am developing a multi threaded application, which can be executed all together in one JVM or in several JVMs. In order to have the possibility of different logback configurations and the same log behaviour in different runtime environments I am using my own ContextSelector, which decides on behalf of the source thread, where the log request comes from, which LoggerContext should be used for the log event.
So I would not like to see ContextSelector support gone in SLF4J or Logback.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Holger Mense Wincor Nixdorf International GmbH Banking Division Product Development (PSD5) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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