Description

Pre-Ingest plugins are invoked before an ingest operation is sent to a Source.  This is an opportunity to take any action on the ingest request, including but not limited to:

• validation
• logging
• auditing
• optimization
• security filtering

Invocation

Pre-Ingest plugins are invoked serially, prioritized by descending OSGi service ranking.  That is, the plugin with the highest service ranking will be executed first. 

The output of a Pre-Ingest plugin is sent to the next Pre-Ingest plugin, until all have executed and the ingest operation is sent to the requested Source.