fluxo-rs

fluxo-rs is a high-performance system metrics daemon and client designed specifically for Waybar. It replaces standard shell scripts with a compiled Rust binary that collects data via a background polling loop and serves it over a Unix socket.

Key Features

• Asynchronous Architecture: Built on Tokio, the daemon handles concurrent IPC requests and background tasks with zero latency and minimal CPU overhead.
• Native Library Integrations:
  • Audio: Direct libpulse integration for event-driven, instant volume and device updates.
  • Bluetooth: Native bluer integration for robust device monitoring.
  • Pixel Buds Pro: Custom native RPC implementation for real-time battery and ANC control.
  • Network: Native nix and /proc inspection for high-speed interface monitoring.
  • Hyprland: Direct IPC Unix socket communication for gamemode and animation status.
• Circuit Breaker (Failsafe): Automatically detects failing modules and enters a "Cool down" state to prevent resource waste and log spam.
• Multi-threaded Polling: Decoupled subsystem threads ensure that a hang in one system (e.g., a slow GPU probe) never freezes your entire bar.

Modules

Command	Description	Tokens
cpu	CPU usage and temperature	{usage}, {temp}, {model}
mem	Memory usage	{used}, {total}
net	Network status & speeds	{interface}, {ip}, {rx}, {tx}
sys	System load and uptime	{uptime}, {load1}, {load5}, {load15}, {procs}
disk	Disk usage	{mount}, {used}, {total}
pool	Btrfs aggregate storage	{used}, {total}
vol	Audio output (sink)	{name}, {volume}, {icon}
mic	Audio input (source)	{name}, {volume}, {icon}
bt	Bluetooth status & plugins	{alias}, {mac}, {left}, {right}, {anc}
power	Battery and AC status	{percentage}, {icon}
game	Hyprland status	active/inactive icons

Setup

1. Build: cargo build --release
2. Configure: Create ~/.config/fluxo/config.toml (see example.config.toml).
3. Daemon: Start fluxo-rs daemon. It's recommended to run this as a systemd user service.

Waybar Configuration

To achieve zero-latency updates, use Waybar Signals:

"custom/audio": {
    "exec": "fluxo vol",
    "return-type": "json",
    "interval": 5,
    "signal": 8,
    "on-click": "fluxo audio cycle sink && pkill -RTMIN+8 waybar"
},
"custom/bluetooth": {
    "exec": "fluxo bt",
    "return-type": "json",
    "interval": 5,
    "signal": 9,
    "on-click": "fluxo bt menu && pkill -RTMIN+9 waybar",
    "on-click-right": "fluxo bt cycle_mode && pkill -RTMIN+9 waybar"
}

Debugging

Start the daemon with RUST_LOG=debug to see detailed logs of library interactions and circuit breaker status:

RUST_LOG=debug fluxo-rs daemon