Avoid timeout issue with GetMachineDescription

Author: arthurkehrwald

Runtime/MpfGamelogicEngine.cs

@@ -106,7 +106,7 @@ public async Task QueryParseAndStoreMpfMachineDescription(CancellationToken ct)
                 var initialState = new MachineState();
 
                 await _mpfWrangler.StartMpf(initialState, ct);
-                var machineDescription = await _mpfWrangler.GetMachineDescription(ct);
+                var machineDescription = await _mpfWrangler.GetMachineDescription(timeout: 3f, ct);
                 await _mpfWrangler.StopMpf();
 
                 ct.ThrowIfCancellationRequested();
@@ -155,9 +155,11 @@ CancellationToken ct
             OnDisplaysRequested?.Invoke(this, new RequestedDisplays(_mpfDotMatrixDisplays));
             OnStarted?.Invoke(this, EventArgs.Empty);
 
-            var md = await _mpfWrangler.GetMachineDescription(ct);
+            var md = await _mpfWrangler.GetMachineDescription(timeout: 3f, ct);
             if (!DoesMachineDescriptionMatch(md))
                 Logger.Warn("Mismatch between MPF's and VPE's machine description detected.");
+            else
+                Logger.Info("MPF's machine description matches VPE's machine description.");
         }
 
         private async void OnDestroy()

Runtime/MpfWrangler.cs

@@ -234,7 +234,10 @@ public async Task StartMpf(MachineState initialState, CancellationToken ct)
             MpfState = MpfState.Connected;
         }
 
-        public async Task<MachineDescription> GetMachineDescription(CancellationToken ct)
+        public async Task<MachineDescription> GetMachineDescription(
+            float timeout,
+            CancellationToken ct
+        )
         {
             ct.ThrowIfCancellationRequested();
             if (MpfState != MpfState.Connected)
@@ -245,7 +248,7 @@ public async Task<MachineDescription> GetMachineDescription(CancellationToken ct
             var client = new MpfHardwareService.MpfHardwareServiceClient(_grpcChannel);
             return await client.GetMachineDescriptionAsync(
                 new EmptyRequest(),
-                deadline: DateTime.UtcNow.AddSeconds(1),
+                deadline: DateTime.UtcNow.AddSeconds(timeout),
                 cancellationToken: ct
             );
         }