[SUBMARINE-1020] Use Watcher and Websocket to Update The Info of Experiments.

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: Backend Server, Workbench
• Target Version: 0.9.0, 0.10.0
• Assignee: Unassigned
• Reporter: You Ting Wang
• Created: 10/Sep/21 14:32
• Updated: 23/Sep/23 09:04

Description

Current way of fetching new status or information from all experiment pods is to use listExperiments and passing it with status = null, and it will also update the database when pod is being deleted.
But to display the current condition in k8s, workbench needs to request server every several seconds, which is inefficient and brute-force.
We can utilize the informer to get the change in k8s then use websocket to tell the workbench what happend.

Sub-Tasks

• Watcher for experiments: Resolved
• Websocket in Submarine Server: Resolved
• Delete Old Notebook Websocket: Open