[FELIX-6135] Plugin mechanism to ensure plugins are available when configuration is processed

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Component/s: Configuration Admin
• Assignee: Unassigned
• Reporter: Christian Schneider
• Created: 25/May/19 06:55
• Updated: 20/Apr/20 14:59
• Resolved: 12/Jun/19 07:43

Description

This is a proposal for a plugin mechanism for configuration that ensures the configuration is only processed when the plugin is available.

The idea is to use prefixes for placeholders like ${prefix:key}. 

The plugin publishes an OSGi service and announces the prefix as a service property.

The configuration will then only be processed and given to users of config admin as long as all plugins are present that are referenced from the configuration.