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From "Remko Popma (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LOG4J2-1010) Injectable context properties
Date Tue, 30 Aug 2016 00:20:20 GMT

    [ https://issues.apache.org/jira/browse/LOG4J2-1010?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15447531#comment-15447531
] 

Remko Popma commented on LOG4J2-1010:
-------------------------------------

The performance concerns Ralph raised regarding global Filters have been addressed.

For further reviews, may I propose that people review the {{LOG4J2-1349-gcfree-threadcontext}}
branch instead? It has the same changes as the {{LOG4J2-1010&LOG4J2-1447-injectable-contextdata&better-datastructure}}
branch, but in addition moved ContextData and related interfaces to org.apache.logging.log4j.spi
package in log4j-api.

Without the LOG4J2-1349 changes
* context data-based Filters and Lookups need to make an unnecessary copy
* injecting context data into the log event needs to make an unnecessary copy

> Injectable context properties
> -----------------------------
>
>                 Key: LOG4J2-1010
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-1010
>             Project: Log4j 2
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 2.2
>            Reporter: Mikael Ståldal
>            Assignee: Remko Popma
>             Fix For: 2.7
>
>         Attachments: properties.patch
>
>
> It would be useful to have a way to inject context properties into a {{LogEvent}}, as
an alternative to {{ThreadContext}}.
> In an asynchronous environment, using ThreadContext as currently implemented is not so
useful since JVM threads might not be coupled to the logical flow of the application.



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