use logger

lights.js

@@ -1,7 +1,9 @@
 import ws281x from 'rpi-ws281x'
 import * as fs from 'fs'
+import { Logger, levels } from './logger'
 
 const cfg = JSON.parse(fs.readFileSync('./config.json'));
+const log = new Logger("lights", cfg.log_level ? levels[cfg.log_level] : levels.INFO);
 
 const fade_ticks = cfg.fade_ticks || 20;
 var pixels = new Uint32Array(cfg.leds);
@@ -35,7 +37,7 @@ export function set_pattern(pat) {
 
 function tick_pattern() {
   // do the parsing stuff here
-  console.log("TICKING PATTERN")
+  log.debug("TICKING PATTERN")
 
   for (let i = 0; i < cfg.leds; i++) {
     var r = Math.floor(Math.random() * 256)
@@ -50,7 +52,7 @@ export function tick() {
   for (let i = 0; i < cfg.leds; i++) {
     if (next_pattern[i] != pixels[i]) {
       if (next_pattern[i] == pixel_cache[i]) {
-        console.log("INCONGRUENCE WITH " + i);
+        log.debug("INCONGRUENCE WITH " + i);
         pixels[i] = next_pattern[i];
       }
       else {
@@ -59,7 +61,7 @@ export function tick() {
       }
     }
     else if (pixel_cache[i] != pixels[i]) {
-      console.log("PATTERN NOT STORED " + i);
+      log.debug("PATTERN NOT STORED " + i);
       pixel_cache[i] = pixels[i];
     }
   }
@@ -85,11 +87,11 @@ function fade(index) {
   var sign_r = diff_r === Math.abs(diff_r) ? 1 : -1;
   var sign_g = diff_g === Math.abs(diff_g) ? 1 : -1;
   var sign_b = diff_b === Math.abs(diff_b) ? 1 : -1;
-  console.log(`${diff_r} ${sign_r} ${diff_g} ${sign_g} ${diff_b} ${sign_b}`);
+  log.debug(`${diff_r} ${sign_r} ${diff_g} ${sign_g} ${diff_b} ${sign_b}`);
   var interval_r = sign_r * Math.ceil(Math.abs(diff_r) / fade_ticks);
   var interval_g = sign_g * Math.ceil(Math.abs(diff_g) / fade_ticks);
   var interval_b = sign_b * Math.ceil(Math.abs(diff_b) / fade_ticks);
-  console.log(`r${Math.abs(diff_r) / fade_ticks} ${Math.ceil(Math.abs(diff_r) / fade_ticks)}` +
+  log.debug(`r${Math.abs(diff_r) / fade_ticks} ${Math.ceil(Math.abs(diff_r) / fade_ticks)}` +
     `g${Math.abs(diff_g) / fade_ticks} ${Math.ceil(Math.abs(diff_g) / fade_ticks)}` +
     `b${Math.abs(diff_b) / fade_ticks} ${Math.ceil(Math.abs(diff_b) / fade_ticks)}`);
 
@@ -124,7 +126,7 @@ function fade(index) {
   if (current_tick_r + 1 >= fade_ticks &&
     current_tick_g + 1 >= fade_ticks &&
     current_tick_b + 1 >= fade_ticks) {
-    console.log("FINISHED");
+    log.debug("FINISHED");
     pixel_cache[index] = next_pattern[index];
   }
   else {
@@ -132,7 +134,7 @@ function fade(index) {
       current.g + interval_g,
       current.b + interval_b);
     let prev = int_to_rgb(pixel_cache[index]);
-    console.log(`${current_tick_r} ${current_tick_g} ${current_tick_b}: `
+    log.debug(`${current_tick_r} ${current_tick_g} ${current_tick_b}: `
       + `CURRENT COLOR: ${current.r} ${current.g} ${current.b} NEW COLOR: ${current.r + interval_r} ${current.g + interval_g} ${current.b + interval_b} ` +
       `FINAL: ${final.r} ${final.g} ${final.b} ` +
       `\nINTERVAL: ${interval_r} ${interval_g} ${interval_b} ` +

logger.js

@@ -0,0 +1,51 @@
+export const levels = {
+	DEBUG: 4,
+	INFO: 3,
+	WARN: 2,
+	ERROR: 1,
+	PANIC: 0,
+};
+
+export default class Logger {
+	constructor(name, level) {
+		console.log(`created new logger for ${name} with level ${level}`);
+		this.sn(name);
+		this.s(level);
+	}
+	n = 'DEFAULT';
+	l = 0;
+	sn(n) {
+		this.n = n;
+	}
+	s(l) {
+		if (l && l.constructor === Number) {
+			this.l = l;
+		} else {
+			this.l = levels[l];
+		}
+	}
+
+	lo(l, m) {
+		if (l <= this.l) {
+			let level = Object.keys(levels).find((key) => levels[key] === l);
+			let ms = typeof m == 'object' ? JSON.stringify(m) : m;
+			console.log(`${level} [${this.n}]: ${ms}`);
+		}
+	}
+
+	debug(msg) {
+		this.lo(levels.DEBUG, msg);
+	}
+	info(msg) {
+		this.lo(levels.INFO, msg);
+	}
+	warn(msg) {
+		this.lo(levels.WARN, msg);
+	}
+	error(msg) {
+		this.lo(levels.ERROR, msg);
+	}
+	panic(msg) {
+		this.lo(levels.PANIC, msg);
+	}
+}