[CURATOR-598] InterProcessSemaphoreV2::getData to check against data changes on the semaphore

• Type: New Feature
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 5.1.0
• Component/s: Recipes
• Assignee: Unassigned
• Reporter: Francesco Nigro
• Created: 20/Jun/21 16:01
• Updated: 20/Jun/21 16:02

Description

InterProcessSemaphoreV2 allows holders to set data on the acquired lease: exposing an Optional<byte[]> getData would allow an observer to check against mutex state change despite not being the lock owner (assuming owner has used setData prior a mutex acquisition).
This can be used to weakly enforce order of mutex acquisition or just check owner's identity and/or presence (assuming owner setData prior a mutex acquisition).