Use logback for logging¶
Context and Problem Statement¶
Each application should log.
Chosen option: “Logback”, because it
natively implements SLF4J and
SLF4J offers bridging legacy APIs and thus allows to unify logging.
Single point for logging configuration
Logging over SLF4J API
Developers have to include following dependencies in their
pom.xml, because the concrete logging framework should be chosen at the project executed by a user (or on a server). Tests still require logging and thus the concrete logging framework has to be included for tests.
org.slf4j slf4j-api 1.7.25 compile ch.qos.logback logback-classic 1.2.3 test org.slf4j jcl-over-slf4j 1.7.25 test
For easy logging, it is enough to include logback libraries at
WEB-INF/lib. Thus, following dependency has to be included at REST services:
ch.qos.logback logback-classic 1.2.3 compile
Any logging wrapper has also has to be included at “user-facing” ends (CLI or WAR). Note that it cannot be included at libraries, because it leads to an infinite loop.
org.slf4j jcl-over-slf4j 1.7.25 compile
Legacy/old libraries depending on a certain logging framework have to be loaded with an exclusion of the logging framework.
The documentation of Winery has to state that slf4j was chosen and that the logging has to be configured accordingly.
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