# EPF Cohort 6 – Week 2 Update

After switching focus from consensus improvements to observability work, this week has been about getting practical experience with Tokio Tracing and preparing for integration into the Grandine client.

## Tokio Tracing Practice Project

To get comfortable with `tokio-tracing`, I created a small asynchronous Rust project from scratch. In this toy project, I experimented with:

- Setting up `tracing` dependencies (`tracing`, `tracing-subscriber`, `tracing-futures`)
- Configuring structured logs and spans
- Testing different subscriber configurations
- Practicing filtering and log levels

This hands-on work helped me better understand how tracing differs from traditional logging and how to design useful instrumentation in async Rust code.

## Grandine Exploration

In parallel, I started exploring the Grandine codebase more systematically:

- Cloned the repository and built it locally on both Ubuntu and Windows WSL
- Studying how large-scale Rust projects like Grandine organize modules, crates, and dependencies

## Next Steps

For the next week, my focus will be:

- Identifying the most critical parts of Grandine where tracing instrumentation would be most useful (e.g., block processing, networking, validator duties)
- Studied the main crates and module layout to understand where tracing hooks could be inserted
- Documenting how to configure and use the tracing output for debugging

## Resources

- [Tokio Tracing Documentation](https://docs.rs/tracing)
- [Tokio Tracing Cookbook](https://tokio.rs/tokio/topics/tracing)
- [Grandine GitHub Repository](https://github.com/grandinetech/grandine)