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https://issues.apache.org/jira/browse/QPID-2012?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12754971#action_12754971
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Martin Ritchie commented on QPID-2012:
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Marnie,
The change here was to create a new RootLogger (StartupRootMessageLogger) that
is always enabled and logs to Standard Out. This allows status messages to
occur before the configuration file has been loaded.
This is important to log, for example, the configuration and logging
configuration file locations.
The additional a BrokerLogActor was created to log against during startup and
shutdown. There was no need to create a BrokerLogSubject as there would only
ever be one Broker per VM.
The SRML works by overriding the isMessageEnabled calls and returning true.
This ensures that it will always log so we can always tell when the broker
starts and stops and what configuration file is in use.
> Logging Design does not take into consideration logging before broker
> configuration has been processed
> ------------------------------------------------------------------------------------------------------
>
> Key: QPID-2012
> URL: https://issues.apache.org/jira/browse/QPID-2012
> Project: Qpid
> Issue Type: Bug
> Components: Java Broker
> Reporter: Martin Ritchie
> Assignee: Marnie McCormack
> Fix For: 0.6
>
>
> The current Technical Design only describes changes to be completed to use
> log4j for logging and to log based on the configuration setup.
> The majority of the Broker Startup messages in the specification are logged
> before the configuration has been loaded.
> The design also does not include a LogSubject against which Broker level
> messages should be logged, nor is there a LogActor to log messages during
> startup/shutdown. Although if shutdown could be requested via the
> ManagementConsole concievably that would be the current actor.
> One approach would be to:
> - create a SystemOutRootLogger that is always enabled and used until the
> configuration has been read.
> - create a BrokerLogSubject that would not add anything additional to the log
> format.
> - create a BrokerLogActor that is set during startup and broker initiated
> shutdown.
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