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https://issues.apache.org/jira/browse/ARTEMIS-4020?focusedWorklogId=813368&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-813368
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ASF GitHub Bot logged work on ARTEMIS-4020:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 29/Sep/22 14:54
            Start Date: 29/Sep/22 14:54
    Worklog Time Spent: 10m 
      Work Description: gemmellr commented on code in PR #4237:
URL: https://github.com/apache/activemq-artemis/pull/4237#discussion_r983656021


##########
artemis-server/src/main/java/org/apache/activemq/artemis/spi/core/security/jaas/AbstractPrincipalLoginModule.java:
##########
@@ -31,12 +31,13 @@
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import java.lang.invoke.MethodHandles;
 
 /**
  * Abstract login module that uses an external authenticated principal
  */
 public abstract class AbstractPrincipalLoginModule implements AuditLoginModule 
{
-   private final Logger logger = LoggerFactory.getLogger(getClass());
+   private static final Logger logger = 
LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());

Review Comment:
   Basically all this is doing by using getClass() as the key is sharing a 
logger name (which various places in the codebase do with the code loggers, by 
using the package name as the key), so that all the logging for a given 
LoginModule all comes out the same logger name and can be reasoned about as a 
unit.
   
   If you make this class have a static logger like this youll also need to 
change all the log messages themselves to better reflect what module they are 
logging about or you simply wont be able to tell which the logging is about 
unless there is only one. Passing a logger for such cases is not that unusual, 
it is done elsewhere in the codebase.





Issue Time Tracking
-------------------

    Worklog Id:     (was: 813368)
    Time Spent: 5h  (was: 4h 50m)

> switch to using SLF4J for logging API and use Log4j 2 for broker distribution
> -----------------------------------------------------------------------------
>
>                 Key: ARTEMIS-4020
>                 URL: https://issues.apache.org/jira/browse/ARTEMIS-4020
>             Project: ActiveMQ Artemis
>          Issue Type: Improvement
>            Reporter: Robbie Gemmell
>            Priority: Major
>             Fix For: 2.27.0
>
>          Time Spent: 5h
>  Remaining Estimate: 0h
>
> Switch to using [SLF4J|https://www.slf4j.org/] as the logging API for the 
> code base, with end-uses supplying and configuring an SLF4J-supporting 
> logging implementation of their choice based on their needs.
> For the client, applications will need to supply an SLF4J binding to a 
> logging implementation of their choice to enable logging. An example of doing 
> so using [Log4J 2|https://logging.apache.org/log4j/2.x/manual/index.html] is 
> given in (/will be, once the release is out) the [client logging 
> documentation|https://activemq.apache.org/components/artemis/documentation/latest/logging.html#logging-in-a-client-application].
> For the broker, the assembly distribution will include [Log4J 
> 2|https://logging.apache.org/log4j/2.x/manual/index.html] as its logging 
> implentation, with the "artemis create" CLI command used to create broker 
> instances now creating a log4j2.properties configuration within the 
> <broker-instance>/etc/ directory to configure Log4J. Details for upgrading an 
> existing broker-instance is given in (/will be, once the release is out) the 
> [version upgrade 
> documentation|https://activemq.apache.org/components/artemis/documentation/latest/versions.html].



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