IDEA
Original idea is here - https://github.com/MicroUtils/kotlin-logging
The idea is to pass Supplier<String> to debug (info, error, etc.)
methods instead of template string and object varargs array.
KOTLIN (just for example)
In kotlin it looks like that:
logger.debug { "Some $expensive message!" }
So you pass just function and framework decides evaluate for message
producing it or not.
JAVA
in java it may looks like that:
logger.debug(() -> "Code which produce heavy log message"));
or
logger.debug(() -> {
return "Code which produce heavy log message"
}));
E.g. we put isDebugEnabled call into framework and make code cleaner.
IMPLEMENTATION
It is necessary to add counterpart method with Supplier<String>
argument for all methods that have final String s, final Object...
objects arguments in signature.
DISADVANATAGES
For now I can see only one - slf4j framework will require java 8 version
Do you agree to add such feature?
Feel free to ask any me any questions.
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