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From "Scott Deboy (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LOG4J2-155) add getFormat to Layout
Date Sun, 03 Mar 2013 16:51:12 GMT

    [ https://issues.apache.org/jira/browse/LOG4J2-155?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13591783#comment-13591783
] 

Scott Deboy commented on LOG4J2-155:
------------------------------------

I expected it would be a core type..but elementType?

And does defining this as a plugin mean it can't be an attribute of the configuration node,
but must be an element?

                
> add getFormat to Layout
> -----------------------
>
>                 Key: LOG4J2-155
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-155
>             Project: Log4j 2
>          Issue Type: Improvement
>            Reporter: Scott Deboy
>         Attachments: log4j2-155-feb21-rev1.patch, log4j2-155-feb24-rev1.patch, log4j2-155-jan22-rev1.patch,
log4j2-155-jan23-rev1.patch
>
>
> I was looking at an old rev - getContentType is now exposed - thanks!
> Now if we could add a 'getFormat':
> It would be useful to expose information about a Layout's format.
> If the content type is text/plain, exposing the layout format as a conversion pattern
would work fine.
> If the content type is text/html or text/xml we could expose something else (or null).
> My primary interest is adding the ability to 'discover' the file-based logging configurations
in order to support them via Chainsaw and multicast DNS.
> If all Layouts supporting text/plain content types exposed their format as a conversion
pattern, and the file-based appenders (optionally) provided the ability to advertise their
configuration, the files could be remotely tailed without the far endpoint even knowing anything
about the file configuration.
> For an example, see how multicast appenders are exposed via zeroconf/multicast dns in
log4j 1.x in activateOptions - something very similar could be done with contenttype and format
properties in a fileappender with a layout.
>     if (advertiseViaMulticastDNS) {
>         Map properties = new HashMap();
>         properties.put("multicastAddress", remoteHost);
>         zeroConf = new ZeroConfSupport(ZONE, port, getName(), properties);
>         zeroConf.advertise();
>     }

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