[jira] [Work logged] (LOG4J2-1192) Dynamic Subject for SMTP Appender

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     [ https://issues.apache.org/jira/browse/LOG4J2-1192?focusedWorklogId=305836&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-305836 ]

ASF GitHub Bot logged work on LOG4J2-1192:
------------------------------------------

                Author: ASF GitHub Bot
            Created on: 03/Sep/19 20:01
            Start Date: 03/Sep/19 20:01
    Worklog Time Spent: 10m 
      Work Description: willdieh commented on pull request #308: LOG4J2-1192 (support dynamic Subject)
URL: https://github.com/apache/logging-log4j2/pull/308
 
 
   Edit sendMultipartMessage() to accept dynamic email Subject per comments made in ticket LOG4J2-1192 by Harry Bawls
 
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Issue Time Tracking
-------------------

            Worklog Id:     (was: 305836)
    Remaining Estimate: 0h
            Time Spent: 10m

> Dynamic Subject for SMTP Appender
> ---------------------------------
>
>                 Key: LOG4J2-1192
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-1192
>             Project: Log4j 2
>          Issue Type: New Feature
>          Components: Appenders
>    Affects Versions: 2.4.1
>         Environment: ALL
>            Reporter: Jörg Bretschneider
>            Assignee: Gary Gregory
>            Priority: Major
>              Labels: features
>             Fix For: 2.6
>
>         Attachments: ExtendedSmtpAppender.java, ExtendedSmtpManager.java, MaxLengthConverter.java
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> It is annoying to have log messages sent to users via SMTP Appender with a static subject, requiring recipients to open each of possibly a vast amount of log emails in order to find out what went wrong.
> Users should be able to insert runtime diagnostic context information to the message text AND to the message subject as well. 
> While the first seems to be working with Patternlayout using the mechanism with the %X{<key>} pattern based on a NDC or MDC <key> in the "ConversionPattern" parameter, it does NOT work with the "Subject" parameter with log4j (neither 1.2 nor 2.x), though some bloggers suggest it, e.g. http://stackoverflow.com/a/7015453. 
> See http://stackoverflow.com/questions/29435825/log4j2-custom-email-subject-from-map as an example where others found this also.
> This issue should have been fixed long ago.
> I suggest to extend SMTP appender in order to be able to use %X and other Pattern conversion in the "Subject" parameter properly. 
> http://openutils.sourceforge.net/openutils-log4j/smtpappender.html 
> has already done the part for applying PatternLayout to the SMTP Appender "Subject". I didn't test if this works properly. 
> Maybe this work can be included into log4j with minimal effort?
> This feature has originally been realized in LOGBACK using an MDC in Patternlayouts: http://logback.qos.ch/manual/mdc.html



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