The Celix Log Service realizes an adapted implementation of the OSGi Compendium Log Service. This is a very simple implementation which only stores the log in memory. It can be combined with one of the available Log Writers to forward the buffered entries to e.g. stdout or syslog.
To ease the use of the Log Service, the Log Helper can be used. It wraps and therefore simplifies the log service usage.
LOGHELPER_ENABLE_STDOUT_FALLBACK If set to any value and in case no Log Service is found the logs are still printed on stdout.