[SLING-4207] Add notifications upon tenant changes

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: Tenant 1.0.2
• Component/s: Extensions
• Assignee: Felix Meschberger
• Reporter: Timothee Maret
• Created: 27/Nov/14 19:18
• Updated: 03/Aug/23 05:00
• Resolved: 03/Aug/23 05:00

Description

Currently, there is no clean way to detect when a tenant has been added/removed/modified.

We may detect when a change is required by implementing the TenantCustomizer interface, however, it tells nothing about the actual completion of the change.
We may listen for OSGI events under /etc/tenants but this requires the user to know where the tenants are located (which afaik, currently is not exposed).

In order to allow apps reacting on tenant changes, I propose to either:

I. extend the current SPI with an interface TenantEventListener that users can implement ; or
II. send OSGI events form the current implementation.

In both cases, the events should cover

• Tenant added
• Tenant removed
• Property added
• Property removed