[jira] [Commented] (LOG4J2-2539) SMTPAppender displays empty message for priorEvents in the email

["Brandon (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LOG4J2-2539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17355848#comment-17355848 ] 

Brandon commented on LOG4J2-2539:
---------------------------------

I had the same issue when using -DLog4jContextSelector=org.apache.logging.log4j.core.async.AsyncLoggerContextSelector with Disruptor lib.  In the SMTP Appender I get a RingBufferLogEvent that gets added to the CyclicBuffer<LogEvent> buffer but later in the code a clear() is called on it.  When this type gets added there is some logic to make other types immutable, Log4jLogEvent and MutableLogEvent but not RingBufferLogEvent.  I added it in the add method so it looks like:

 
{code:java}
public void add(LogEvent event) {
    if (event instanceof Log4jLogEvent && event.getMessage() instanceof ReusableMessage) {
        ((Log4jLogEvent) event).makeMessageImmutable(); 
    } else if (event instanceof MutableLogEvent) { 
        event = ((MutableLogEvent) event).createMemento(); 
    } else if (event instanceof RingBufferLogEvent) { 
        event = ((RingBufferLogEvent) event).createMemento(); 
    } 
    buffer.add(event);
}
{code}

> SMTPAppender displays empty message for priorEvents in the email
> ----------------------------------------------------------------
>
>                 Key: LOG4J2-2539
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-2539
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.11.1
>         Environment: jvm: OpenJDK Runtime Environment 1.8.0_191-b12 OpenJDK 64-Bit Server VM) 
> os: Linux (unknown) amd64 4.14.88-88.76.amzn2.x86_64
> container: Apache Tomcat/9.0.14
>            Reporter: Anantha
>            Priority: Major
>         Attachments: log4j2_error_email.png
>
>
> Context entries display Level = Off and Logger = root, with no log message, instead of the actual log entry (see attachment), whereas console appender logs display the right message.



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