integrate propper logging system

Cargo.toml

@@ -8,7 +8,9 @@ edition = "2021"
 [dependencies]
 config = "0.13.3"
 ctrlc = "3.4.0"
+env_logger = "0.10.0"
 helios-dac = { version = "0.1", default-features = false, features = ["native"] }
+log = "0.4.18"
 redis = "0.23.0"
 ron = "0.8.0"
 serde = { version = "1.0.163", features = ["derive"] }

src/main.rs

@@ -22,6 +22,8 @@ use conf::Conf;
 use errors::{LJError,LJResult};
 use point::Point;
 use transformer::{Transformers,Translate,Replicate};
+use log::{LevelFilter,info,/* warn, */ error};
+use env_logger::Builder;
 
 const DEFAULT_CONF_FILE : &str = "settings.toml";
 const CENTER : (f32,f32) = (2000.0, 2000.0);
@@ -30,7 +32,7 @@ pub fn main() {
     match run_all() {
 	Ok(()) => {},
 	Err(err) => {
-	    println!("Error: {}", err);
+	    error!("Error: {}", err);
 	}
     }
 }
@@ -40,7 +42,11 @@ fn run_all() -> LJResult<()> {
 	DEFAULT_CONF_FILE.to_string()
     });
     
-    let config = Conf::new(&filename)?;
+    let config = Conf::new(&filename);
+    init_logging(&config);
+    let config = config?;
+    info!("Starting up");
+    
     let mut rs = RedisCtrl::new(&config.redis_url)?;
     
     let running = Arc::new(AtomicBool::new(true));
@@ -59,7 +65,7 @@ fn run_all() -> LJResult<()> {
     while running.load(Ordering::SeqCst) {
 	let order = rs.get_order(config.laser_id)?;
 	if order != Order::Draw {
-	    println!("{:?}", order);
+	    info!("Order: {:?}", order);
 	}
 
 	let frame = get_next_frame(&config, 1000, &transformers,
@@ -70,11 +76,26 @@ fn run_all() -> LJResult<()> {
         device.write_frame(frame)?;
     }
 
-    println!("Exiting, stoping device.");
+    info!("Exiting, stoping device.");
     device.stop()?;
     Ok(())
 }
 
+fn init_logging(config: &LJResult<Conf>) {
+    if let Ok(ref config) = config {
+	if config.debug {
+	    let mut builder = Builder::from_default_env();
+	    builder
+		.filter(None, LevelFilter::Info)
+		.init();
+	} else {
+	    env_logger::init();
+	}
+    } else {
+	env_logger::init();
+    }
+}
+
 fn get_helios_device() -> LJResult<NativeHeliosDac> {
     let controller = NativeHeliosDacController::new()?;
     let devices = controller.list_devices()?;
@@ -100,7 +121,7 @@ fn get_next_frame(
 	line = transformer.apply(&line);
     }
 
-    println!("{:?}", line);
+    info!("Line: {:?}", line);
     
     let line2 : Vec<helios_dac::Point> = line.into_iter().map(| p | p.into()).collect();
     Ok(Frame::new(speed, line2))