Fix for upgradable metric for Prometheus

pkg/promunifi/collector.go

@@ -332,6 +332,12 @@ func (u *promUnifi) exportMetrics(r report, ch chan<- prometheus.Metric, ourChan
 				ch <- r.export(m, float64(v))
 			case int:
 				ch <- r.export(m, float64(v))
+			case bool:
+				if v {
+					ch <- r.export(m, 1)
+				} else {
+					ch <- r.export(m, 0)
+				}
 			default:
 				r.error(ch, m.Desc, fmt.Sprintf("not a number: %v", m.Value))
 			}

pkg/promunifi/uap.go

@@ -231,6 +231,7 @@ func (u *promUnifi) exportUAP(r report, d *unifi.UAP) {
 	r.send([]*metric{
 		{u.Device.Info, gauge, 1.0, append(labels, infoLabels...)},
 		{u.Device.Uptime, gauge, d.Uptime, labels},
+		{u.Device.Upgradeable, gauge, d.Upgradable.Val, labels},
 	})
 }