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From "Gary Gregory (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (LOG4J2-1192) Dynamic Subject for SMTP Appender
Date Mon, 04 Jan 2016 23:10:40 GMT

     [ https://issues.apache.org/jira/browse/LOG4J2-1192?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Gary Gregory reassigned LOG4J2-1192:

    Assignee: Gary Gregory

> 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
>              Labels: features
>         Attachments: ExtendedSmtpAppender.java, ExtendedSmtpManager.java, MaxLengthConverter.java
> 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:

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