Amit Mondal created FELIX-6407:
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Summary: SCR Log Extension still logs using the log level of the
other bundle
Key: FELIX-6407
URL: https://issues.apache.org/jira/browse/FELIX-6407
Project: Felix
Issue Type: Bug
Components: Declarative Services (SCR)
Affects Versions: scr-2.1.26, scr-2.1.24
Reporter: Amit Mondal
The SCR incorporates 3 different types of logging:
* Logging for SCR main code (_*ScrLogger*_)
* Logging on behalf of the bundle comprising the SCR component
(_*BundleLogger*_)
* Logging on behalf of the component under processing (_*ComponentLogger*_)
According to the current implementation, the SCR logging is by default enabled
and it logs using the log levels of the bundles comprising the SCR components.
This [PR|https://github.com/apache/felix-dev/pull/36] by [~pkriens] has been
merged to introduce a non-OSGi standard extension which enables consumers to
extend the SCR logging functionality, that is, a consumer can on demand set the
log level of the SCR bundle itself which after setting a specific property
(_*ds.log.extension*_) will be enabled. Now, SCR will be able to use the log
level of itself for all the logging. It won't use the log levels of the bundles
under processing.
The specified SCR versions still log using the log levels of the bundles under
processing even though _*ds.log.extension*_ framework property is correctly set.
This feature to extend SCR logging is useful in very low memory IoT devices
where many bundles (>200) are installed and SCR's intensive logging becomes
very costly.
The feature can further be extended to disable the logging completely. Hence, I
am proposing the following approach:
We should introduce another framework property to disable the SCR logging
completely, let's say _*ds.log.enabled*_
By default, this property will not be set which means the logging is enabled by
default, otherwise consumer can decide to disable the logging by setting it to
_*false*_
If the logging is still enabled, the consumer now has two options:
* Use the log level of the extended bundle (bundle under processing)
* Use the log level of the SCR bundle itself
If we decide to let SCR use its own log level, the _*ds.log.extension*_ needs
to be set.
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