OK con filtraggio in cascata

MP.SPEC/Components/ParamsFilter.razor

@@ -1,34 +1,36 @@
-<div class="row">
-    <div class="col-6">
+
+<div class="d-flex justify-content-end">
+    <div class="px-2">
+        <select @bind="@selMacchina" class="form-select">
+            <option value="*">--- Tutti ---</option>
+            @if (ListMacchine != null)
+            {
+                foreach (var item in ListMacchine)
+                {
+                    <option value="@item">@item</option>
+                }
+            }
+        </select>
     </div>
-    <div class="col-6 text-end">
-        <div class="d-flex justify-content-between">
-            <div class="px-2">
-            </div>
-            <div class="px-2">
-                <select @bind="@selMacchina" class="form-select">
-                    <option value="*">--- Tutti ---</option>
-                    @if (ListMacchine != null)
-                    {
-                        foreach (var item in ListMacchine)
-                        {
-                            <option value="@item">@item</option>
-                        }
-                    }
-                </select>
-            </div>
-            <div class="px-2">
-                <select @bind="@selFlux" class="form-select">
-                    <option value="*">--- Tutti ---</option>
-                    @if (ListFlux != null)
-                    {
-                        foreach (var item in ListFlux)
-                        {
-                            <option value="@item">@item</option>
-                        }
-                    }
-                </select>
-            </div>
-        </div>
+    <div class="px-2">
+        @if (isLoading)
+        {
+            <select disabled>
+                <option value="*">...loading</option>
+            </select>
+        }
+        else
+        {   
+        <select @bind="@selFlux" class="form-select">
+            <option value="*">--- Tutti ---</option>
+            @if (ListFlux != null)
+            {
+                foreach (var item in ListFlux)
+                {
+                    <option value="@item">@item</option>
+                }
+            }
+        </select>
+        }
     </div>
 </div>

MP.SPEC/Components/ParamsFilter.razor.cs

@@ -37,14 +37,17 @@ namespace MP.SPEC.Components
             {
                 if (!SelFilter.IdxMacchina.Equals(value))
                 {
+                    isLoading = true;
+                    Task.Delay(1);
+                    //StateHasChanged();
                     SelFilter.IdxMacchina = value;
                     SelFilter.CodFlux = "*";
-                    Task.Delay(1);
                     ListFlux = MDService.ParametriGetFilt(selMacchina).Result;
                     Task.Delay(1);
                     StateHasChanged();
                     Task.Delay(1); 
                     reportChange();
+                    isLoading = false;
                 }
             }
         }
@@ -79,6 +82,8 @@ namespace MP.SPEC.Components
         }
 
 
+        private bool isLoading = false;
+
         private List<string>? ListFlux;
 
         private List<string>? ListMacchine;

MP.SPEC/Data/MpDataService.cs

@@ -391,6 +391,7 @@ namespace MP.SPEC.Data
         {
             return Task.FromResult(dbController.MacchineGetAll());
         }
+
         /// <summary>
         /// Elenco ID macchine con dati FluxLog gestite
         /// </summary>
@@ -438,9 +439,40 @@ namespace MP.SPEC.Data
         /// </summary>
         /// <param name="IdxMacchina">* = tutte, altrimenti solo x una data macchina</param>
         /// <returns></returns>
-        public Task<List<string>> ParametriGetFilt(string IdxMacchina)
+        public async Task<List<string>> ParametriGetFilt(string IdxMacchina)
         {
-            return Task.FromResult(dbController.ParametriGetFilt(IdxMacchina));
+            List<string>? result = new List<string>();
+            result = await Task.FromResult(dbController.ParametriGetFilt(IdxMacchina));
+#if false
+            // 2 minuti valore cache
+            int maxAgeMin = 5;
+            Stopwatch stopWatch = new Stopwatch();
+            stopWatch.Start();
+            // cerco in redis dato valore sel macchina...
+            RedisValue rawData = await redisDb.StringGetAsync($"{redisFluxByMac}:{IdxMacchina}");
+            if (!string.IsNullOrEmpty($"{rawData}"))
+            {
+                result = JsonConvert.DeserializeObject<List<string>>($"{rawData}");
+                stopWatch.Stop();
+                TimeSpan ts = stopWatch.Elapsed;
+                Log.Debug($"ParametriGetFilt | Read from REDIS: {ts.TotalMilliseconds}ms");
+            }
+            else
+            {
+                result = await Task.FromResult(dbController.ParametriGetFilt(IdxMacchina));
+                // serializzp e salvo...
+                rawData = JsonConvert.SerializeObject(result);
+                await redisDb.StringSetAsync($"{redisFluxByMac}:{IdxMacchina}", rawData, TimeSpan.FromMinutes(maxAgeMin));
+                stopWatch.Stop();
+                TimeSpan ts = stopWatch.Elapsed;
+                Log.Debug($"ParametriGetFilt | Read from DB: {ts.TotalMilliseconds}ms");
+            }
+            if (result == null)
+            {
+                result = new List<string>();
+            } 
+#endif
+            return result;
         }
 
         /// <summary>
@@ -499,6 +531,7 @@ namespace MP.SPEC.Data
         private string redisMseKey = "MP:MON:Cache:MSE";
         private string redisStatoCom = "MP:MON:Cache:StatoCom";
         private string redisTipoArt = "MP:MON:Cache:TipoArt";
+        private string redisFluxByMac = "MP:MON:Cache:FluxByMac";
 
         #endregion Private Fields