Hey Florian,
I believe SLF4j does logger object caching, so that when you call
LoggerFactory.getLogger(MyClass.class) it will produce a logger object
once, cache it, and return it for each additional call.
Ceki can correct me if I'm wrong about this.
Florian Huonder wrote:
Hi all,
I have a little question how to use slf4j correctly.
We use SLF4J as logging frontend in a framework.
There are lots of classes that contain business logic. These classes are
initialized once.
Here we have the following signature for the loggers "private final Logger
logger = LoggerFactory.getLogger(MyClass.class);".
On the other hand there are a lot of domain classes. In a productive
environment it is possible that there are 10'000 or 100'000s of domain
classes.
The domain classes also have to log stuff. I think there it won't be a good
idea to have the logger static.
But then the drawbacks of static occur (not ioc friendly, unknown behavior
because the logger is JVM wide the same).
We thought about the following solution but are not sure if SLF4J can be
used like that :
All business-logic classes that are initialized once get the logger like
written above :"private final Logger logger =
LoggerFactory.getLogger(MyClass.class);".
The domain classes are created through a factory. In this factory we have a
call like "private final Logger logger =
MySingletonLoggerFactory.getLogger(MyDomainClass.class) ;"
The MySingletonLoggerFactory class then is responsible of returning the same
logger for each type of domain object.
What do you think about the solution?
Is this a feasible way ? Are there better ways to go?
I am really looking forward to hearing from you.
Regards,
Florian
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