[SCB-1964] make schema discovery to be core process

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Won't Fix
• Component/s: Java-Chassis
• Assignee: liubao
• Reporter: liubao
• Created: 30/May/20 08:52
• Updated: 19/Jun/20 06:36
• Resolved: 19/Jun/20 06:36

Description

Now schema discovery is implementing Discovery interface. 

Current schema loading process: load from local, load from remote discovery implementation. 

 

Some important scenarios:

1. when calling to a MicroserviceInstance, can discovery schema from MicroserviceInstance. This can avoid java-chassis constraints that the same version of Microservice instances has the same schema. 
2. can load schema on demand. Do not to load all instances, and construct schema for the instance itself. When instance schema changes, can notified immediatly.