[logback-dev] [JIRA] Commented: (LBCLASSIC-182) Evaluable properties

[Ceki Gulcu (JIRA)]

    [ http://jira.qos.ch/browse/LBCLASSIC-182?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=11694#action_11694 ] 

Ceki Gulcu commented on LBCLASSIC-182:
--------------------------------------

Hello Aleksey.

While applying your patch, I noticed that the PropertyDefinerBase class contained a copyright notice with the mention "Magenta Corporation Ltd". Was that intended?  Given the file in question, I suppose not but you never know. 


> Evaluable properties
> --------------------
>
>                 Key: LBCLASSIC-182
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-182
>             Project: logback-classic
>          Issue Type: New Feature
>          Components: Other
>    Affects Versions: 0.9.18
>            Reporter: Aleksey Didik
>            Assignee: Ceki Gulcu
>            Priority: Minor
>         Attachments: define_properties_functionality.patch
>
>
> Necessary to have properties which could be evaluated dynamically in time of configuration file read.
> Currently we have statical defined property values (by property tag or files) or we could get properties from System properties.
> In version 0.9.17 was made possibility to save formatted timestamp in property.
> May be possible to create property evaluator tag, to define some properties value dynamically?
> Something like this:
> <property name="hostName" evaluator="a.b.c.HostPropertyEvaluator">
>       <parameter name="host_type">ip</parameter>
> </property>
> Evaluator will be called on property initialization with listed parameters.

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