[FELIX-5453] Swap callback not called when there are multiple aspects on a service and one of the aspects with lower rank is removed

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: org.apache.felix.dependencymanager-r8
• Component/s: Dependency Manager
• Assignee: Unassigned
• Reporter: Jeroen Daanen
• Created: 19/Dec/16 13:21
• Updated: 06/Feb/17 15:10
• Resolved: 06/Feb/17 15:10

Description

If you have multiple aspects on a service with interface X and one of the aspects with a lower rank is removed, the service requiring service X does not get the swap callback.

See the attached Activator with example code.
The swap method is not called when 'aspect1' is removed.
Actual output of running the activator:

Add: XImpl

Swap old: XImpl
Swap new: Aspect1

Swap old: Aspect1
Swap new: Aspect2

Swap old: Aspect2
Swap new: XImpl

I can understand why swap is not called, because for ServiceRequiringX Aspect1 does not get really 'swapped' (the service stays Aspect2) But is there any way to find out this is happening?