location-tracking-service

Setting up development environment

Nix

1. Install Nix
   • If you already have Nix installed, you must enable Flakes manually.
   • Then, run the following to check that everything is green ✅.

     nix run nixpkgs#nix-health

2. [Optional] Setup the Nix binary cache:

   nix run nixpkgs#cachix use nammayatri

   • For this command to succeed, you must have added yourself to the trusted-users list of nix.conf
3. Install home-manager¹ and setup nix-direnv and starship by following the instructions in this home-manager template.² You want this to facilitate a nice Nix develoment environment.

Rust

cargo is available in the Nix develop shell. You can also use one of the just commands (shown in Nix shell banner) to invoke cargo indirectly.

VSCode

The necessary extensions are configured in .vscode/. See nammayatri README for complete instructions.

Autoformatting

Run just fmt (or treefmt) to auto-format the project tree. The CI checks for it.

pre-commit

pre-commit hooks will be installed in the Nix devshell. Run the pre-commit command to manually run them. You can also run pre-commit run -a to run pre-commit hooks on all files (modified or not).

Services

Run just services to run the service dependencies (example: redis-server) using services-flake.

Usage / Installing

Run nix build in the project which produces a ./result symlink. You can also run nix run to run the program immediately after build.

Upstream Dependent Service

Clone and Run dynamic-driver-offer-app as it will be used for Internal Authentication and Testing postman flow.

Postman Collection

Import the Postman Collection in postman to test the API flow or Run newman run LocationTrackingService.postman_collection.json --delay-request 2000.

Contributing PRs

Run nix run nixpkgs#nixci locally to make sure that the project builds. The CI runs the same.

Profiling

In cargo.toml add :

debug = true
debug-assertions = false

[profile.release]
debug = true
debug-assertions = false```

Footnotes

1. Unless you are using NixOS in which case home-manager is not strictly needed. ↩

2. Not strictly required to develop the project. If you do not use direnv however you would have to remember to manually restart the nix develop shell, and know when exactly to do this each time. ↩