replace debug() with our custom logger

mostly we want trace() and log(). trace() can be enabled whenever
we want by flipping a flag and restarting box

src/apptaskmanager.js

@@ -1,6 +1,6 @@
 import assert from 'node:assert';
 import BoxError from './boxerror.js';
-import debugModule from 'debug';
+import logger from './logger.js';
 import fs from 'node:fs';
 import locks from './locks.js';
 import path from 'node:path';
@@ -9,7 +9,7 @@ import safe from 'safetydance';
 import scheduler from './scheduler.js';
 import tasks from './tasks.js';
 
-const debug = debugModule('box:apptaskmanager');
+const { log, trace } = logger('apptaskmanager');
 
 
 const gActiveTasks = {}; // indexed by app id
@@ -22,12 +22,12 @@ const DRAIN_TIMER_SECS = 1000;
 let gDrainTimerId = null;
 
 async function drain() {
-    debug(`drain: ${gPendingTasks.length} apptasks pending`);
+    log(`drain: ${gPendingTasks.length} apptasks pending`);
 
     for (let i = 0; i < gPendingTasks.length; i++) {
         const space = Object.keys(gActiveTasks).length - TASK_CONCURRENCY;
         if (space == 0) {
-            debug('At concurrency limit, cannot drain anymore');
+            log('At concurrency limit, cannot drain anymore');
             break;
         }
 
@@ -53,7 +53,7 @@ async function drain() {
             .catch((error) => { taskError = error; })
             .finally(async () => {
                 delete gActiveTasks[appId];
-                await safe(onFinished(taskError, taskResult), { debug }); // hasPendingTasks() can now return false
+                await safe(onFinished(taskError, taskResult), { debug: log }); // hasPendingTasks() can now return false
                 await locks.release(`${locks.TYPE_APP_TASK_PREFIX}${appId}`);
                 await locks.releaseByTaskId(taskId);
                 scheduler.resumeAppJobs(appId);
@@ -68,7 +68,7 @@ async function start() {
     assert.strictEqual(gDrainTimerId, null);
     assert.strictEqual(gStarted, false);
 
-    debug('started');
+    log('started');
     gStarted = true;
 
     if (gPendingTasks.length) gDrainTimerId = setTimeout(drain, DRAIN_TIMER_SECS);