[jira] [Commented] (CONFIGURATION-676) Configuration with OS Environment Variables

["Oliver Heger (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CONFIGURATION-676?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16265517#comment-16265517 ] 

Oliver Heger commented on CONFIGURATION-676:
--------------------------------------------

Commons Configuration already has support for reading environment variables. There is the dedicated {{EnviromentConfiguration}} class for this purpose.

It is also possible to integrate values from environment variables into other configurations using interpolation with the {{env}} prefix. This is described in the user's guide at http://commons.apache.org/proper/commons-configuration/userguide/howto_basicfeatures.html#Variable_Interpolation


> Configuration with OS Environment Variables
> -------------------------------------------
>
>                 Key: CONFIGURATION-676
>                 URL: https://issues.apache.org/jira/browse/CONFIGURATION-676
>             Project: Commons Configuration
>          Issue Type: New Feature
>            Reporter: Robin Björklin
>
> Handling configuration with Environment Variables have become more commonplace with the advent of containers and it would be very nice if it were to be supported by commons-configuration.
> An example project doing this would be Spring Boot where where an configuration property such as *colors.background* could be picked up as the environment variable *COLORS_BACKGROUND*.
> Would this make sense for commons-configuration?
> Reference: https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-external-config.html



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