core/services/pipeline: hide deadline from monitor

core/services/pipeline/runner.go

@@ -236,10 +236,16 @@ func init() {
 // results, even after context cancellation.
 func overtimeContext(ctx context.Context) (context.Context, context.CancelFunc) {
 	if d, ok := ctx.Deadline(); ok {
-		// extend deadline
-		return context.WithDeadline(context.WithoutCancel(ctx), d.Add(overtime))
-	}
-	// remove cancellation
+		// We do not use context.WithDeadline/Timeout in order to prevent the monitor hook from logging noisily, since
+		// we expect and want these operations to use most of their allotted time.
+		// TODO replace with custom thresholds: https://smartcontract-it.atlassian.net/browse/BCF-3252
+		var cancel context.CancelFunc
+		ctx, cancel = context.WithCancel(context.WithoutCancel(ctx))
+		t := time.AfterFunc(time.Until(d.Add(overtime)), cancel)
+		stop := context.AfterFunc(ctx, func() { t.Stop() })
+		return ctx, func() { cancel(); stop() }
+	}
+	// do not propagate cancellation in any case
 	return context.WithoutCancel(ctx), func() {}
 }