[IGNITE-14653] Generify Vault and Metastorage services interfaces

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Labels: iep-61 ignite-3
• Ignite Flags: Docs Required, Release Notes Required
• Assignee: Unassigned
• Reporter: Mirza Aliev
• Created: 26/Apr/21 15:15
• Updated: 15/Jun/21 09:02
• Resolved: 15/Jun/21 09:01

Description

Currently, we have two separate interfaces ValutService and MetastorageService, but they have a lot of common methods. Seems that it would be convenient to have a common interface.

• Retrieve a common interface for vault and metastorage
• We need a common interface for listeners on vault and metastorage with onUpdate and onError methods
• We should have Entry interface for vault that will be extended with metastorage Entry with extra revision logic
• Also seems that Watcher from metastorage and vault might have a common parent
• Use common contract for watch method in vault and metastorage