Worker Heartbeating #696
Description
Describe the solution you'd like
Build a new worker heartbeating mechanism. This will allow users to query the list of workers that server is aware of, to help with worker debugging, as well as seeing some basic info regarding each worker.
This requires a new background nexus worker that will send runtime+namespace+client level heartbeats to server.
Additional context
Per-SDK Tickets
- Go - Worker Heartbeating sdk-go#2094
- Java - Worker Heartbeating sdk-java#2716
- Core - Worker heartbeat sdk-core#953 and Worker Heartbeat: Plumb metrics and migrate to runtime/namespace/client level sdk-core#1038
- TypeScript - [Feature Request] Enable Worker Heartbeating sdk-typescript#1810
- Python - [Feature Request] Enable Worker Heartbeating sdk-python#1196
- .NET - [Feature Request] Enable Worker Heartbeating sdk-dotnet#551
- Ruby - [Feature Request] Enable Worker Heartbeating sdk-ruby#354
- PHP - TODO
- Temporal CLI - [Feature Request] Support ListWorkers and DescribeWorker cli#868