[jira] Updated: (TUSCANY-1877) Classloading: Tuscany runtime extension classloading

["Rajini Sivaram (JIRA)" <tu...@ws.apache.org>]

     [ https://issues.apache.org/jira/browse/TUSCANY-1877?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rajini Sivaram updated TUSCANY-1877:
------------------------------------

    Attachment: tuscany-extension-classloading-patch.txt

> Classloading: Tuscany runtime extension classloading
> ----------------------------------------------------
>
>                 Key: TUSCANY-1877
>                 URL: https://issues.apache.org/jira/browse/TUSCANY-1877
>             Project: Tuscany
>          Issue Type: Improvement
>          Components: Java SCA Core Runtime
>            Reporter: Rajini Sivaram
>         Attachments: tuscany-extension-classloading-patch.txt
>
>
> Details of the discussion on classloading in Tuscany can be found on the mailing list:
>    http://marc.info/?l=tuscany-dev&m=119210552631425&w=2
> Details specific to this patch are here:
>     http://marc.info/?l=tuscany-dev&m=119340004217949&w=2
> This patch introduces a service discovery class with a set of registered classloaders which enables
> extensions to be added to Tuscany without requiring the SPI classloader to have visibility of the extension
> classes. By default, Tuscany will continue to run in a single-classloader mode. A multi-classloader
> test has been added which runs Tuscany runtime with four classloaders forming the hierarchy:
>   3rd party <-- SCA-API <-- Tuscany SPI + runtime <--  Tuscany extensions
> where <-- denotes a parent<--child relation.
> This patch does not address classloading requirements specific to the Node API.

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