[jira] [Updated] (KARAF-4344) Migrate decanter to DS

["Christian Schneider (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KARAF-4344?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Christian Schneider updated KARAF-4344:
---------------------------------------
    Issue Type: Improvement  (was: Bug)

> Migrate decanter to DS
> ----------------------
>
>                 Key: KARAF-4344
>                 URL: https://issues.apache.org/jira/browse/KARAF-4344
>             Project: Karaf
>          Issue Type: Improvement
>          Components: decanter
>    Affects Versions: decanter-1.0.1
>            Reporter: Christian Schneider
>            Assignee: Christian Schneider
>             Fix For: decanter-1.1.0
>
>
> Currently we are using osgi APIs to bind services and configuration.
> This is becoming increasingly complicated and error prone.
> For example for some of the decanter components we need two services and multiple configurations (ManagedServiceFactory). This results in two stacked service trackers and a ManagedServiceFactoryImpl. It is difficult to make sure this code works correctly in all circumstances.
> So I plan to switch to declarative services where all of the above can be controlled by annoations. Additionally we can use the new type safe configurations that make it a lot easier to work with the configuration both as a user and as a developer of a component.
> One important question is the minimum environment we want to support with decanter 1.1.0. Older karaf versions do not support scr 2 (and DS spec 1.3) which is needed for some interesting DS features like field injection and type safe configs.



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