[jboss-jira] [JBoss JIRA] (LOGMGR-191) Amend NullPointerException in regex filters

[James Perkins (JIRA)]

     [ https://issues.jboss.org/browse/LOGMGR-191?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

James Perkins reassigned LOGMGR-191:
------------------------------------

    Assignee: James Perkins  (was: Toshiya Kobayashi)


> Amend NullPointerException in regex filters
> -------------------------------------------
>
>                 Key: LOGMGR-191
>                 URL: https://issues.jboss.org/browse/LOGMGR-191
>             Project: JBoss Log Manager
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 2.1.0.Alpha5
>            Reporter: Toshiya Kobayashi
>            Assignee: James Perkins
>              Labels: support
>             Fix For: 1.3.3.Final, 1.4.4.Final, 1.5.10.Final, 2.0.10.Final, 2.1.0.Alpha6
>
>
> When log message is null, RegexFilter.isLoggable() throws NullPointerException.
> https://github.com/jboss-logging/jboss-logmanager/blob/master/src/main/java/org/jboss/logmanager/filters/RegexFilter.java#L63
> It often results in unexpected outcomes. For example, assuming you have a filter-spec with "not(match(xxx))" to suppress some messages in your logger configuration:
> {code:xml}
>     <subsystem xmlns="urn:jboss:domain:logging:3.0">
>             <console-handler name="CONSOLE">
>                 <level name="INFO"/>
>                 <filter-spec value="not(match(&quot;SOME_MESSAGE&quot;))"/>
>                 <formatter>
>                     <named-formatter name="COLOR-PATTERN"/>
>                 </formatter>
>             </console-handler>
> {code}
> and an application has a code like this:
> {code:java}
>         try {
>             ...
>         } catch (Exception e) {
>             logger.error(e.getMessage(), e);
>         }
> {code}
> "e.getMessage()" could be null. But you want to log the stacktrace 'e' anyway.
> In this case, NullPointerException is thrown from RegexFilter and reaches to LoggerNode and disappears. ConsoleHandler cannot publish the log at all.
> https://github.com/jboss-logging/jboss-logmanager/blob/master/src/main/java/org/jboss/logmanager/LoggerNode.java#L317-L319
> I think 'null' message should simply return 'false' in RegexFilter.isLoggable().



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