Feature Request: Implement a Debugging and Profiling Tool Similar to Tokio-Console

[davisuga]

I am writing to propose the implementation of a feature similar to the tokio-console used in asynchronous Rust applications. This tool has proven to be extremely useful for collecting and displaying in-depth diagnostic data on asynchronous tasks, resources, and operations in an application.

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In Cats-Effect, we already have the ability to remotely trigger fiber snapshots (see LiveFiberSnapshotTriggerMBean.scala) and expose some coarse metrics in various MBeans (see ComputePoolSamplerMBean.scala). These can be accessed by tools, but a more integrated and user-friendly tool like tokio-console would be a great addition to the ecosystem.

I believe that the implementation of a similar tool for Cats-Effect would greatly enhance the debugging and profiling experience for developers. I look forward to hearing your thoughts on this proposal.

[keynmol]

While I was trying to nerdsnipe @mpilquist into doing this, following links were thrown around:

1. Basic intro JMX: I'm just going to keep adding - here's an example of starting the mbean server: https://www.baeldung.com/java-management-extensions
2. cjmx - command line JMX tool: https://github.com/cjmx/cjmx
3. tui-scala - to implement the rich TUI: https://github.com/oyvindberg/tui-scala

[mpilquist]

I’m interested in working on something like this. I will create a repo so we can collect ideas, etc.

[mpilquist]

https://github.com/typelevel/cats-effect-shell

[djspiewak]

This is cool af. I knew about Tokio shell but had mentally written it off as something we probably wouldn't be able to do. JMX probably gives us an avenue though.