Add ServicesMonitor

src/apps/SettingsWindow/src/AppDelegate.swift

@@ -60,6 +60,7 @@ public class AppDelegate: NSObject, NSApplicationDelegate {
     LibKrbn.ConnectedDevices.shared.watch()
     LibKrbn.GrabberClient.shared.start()
     LibKrbn.Settings.shared.watch()
+    ServicesMonitor.shared.start()
     StateJsonMonitor.shared.start()
     SystemPreferences.shared.start()
 

src/apps/SettingsWindow/src/ContentViewStates.swift

@@ -7,6 +7,7 @@ final class ContentViewStates: ObservableObject {
   // Alerts
   //
 
+  @Published public var showServicesNotRunningAlert = false
   @Published public var showDriverNotActivatedAlert = false
   @Published public var showDriverVersionMismatchedAlert = false
   @Published public var showInputMonitoringPermissionsAlert = false

src/apps/SettingsWindow/src/ServicesMonitor.swift

@@ -0,0 +1,22 @@
+import Foundation
+
+public class ServicesMonitor {
+  static let shared = ServicesMonitor()
+
+  private var timer: Timer?
+
+  public func start() {
+    timer = Timer.scheduledTimer(
+      withTimeInterval: 3.0,
+      repeats: true
+    ) { (_: Timer) in
+      ContentViewStates.shared.showServicesNotRunningAlert =
+        !libkrbn_services_grabber_daemon_running()
+    }
+  }
+
+  public func stop() {
+    timer?.invalidate()
+    timer = nil
+  }
+}