Optional assets category

Author: ohrebeniuk

src/DigmaSSEServer/DigmaClient.cs

@@ -106,12 +106,12 @@ public async Task<string> GetTrace(string traceId)
         return await response.Content.ReadAsStringAsync();
     }
 
-    public async Task<string> GetAssetsByCategory(string environmentId, string? category = null, int page = 0, int pageSize = 10)
+    public async Task<string> GetAssetsByCategory(string environmentId, string? category = "", int page = 0, int pageSize = 10)
     {
         var request = new
         {
             environmentId,
-            category,
+            category = string.IsNullOrEmpty(category) ? null : category,
             page,
             pageSize
         };

src/DigmaSSEServer/Tools/CodeObservabilityTool.cs

@@ -87,8 +87,8 @@ public static async Task<string> GetTrace(DigmaClient client,
          "Find out what affects performance in the application the most. Returns a list of assets (can be code locations, endpoints, database queries etc.) and their  performance impact, which is measured by the time cost of exeecuting these assets.")]
     public static async Task<string> GetTopPerformanceImpactingAssets(DigmaClient client,
         [Description("The environment id")] string environmentId,
-        [Description("The asset category name")]
-        string? assetCategory = null,
+        [Description("The asset category name. Leave empty string for all categories")]
+        string? assetCategory = "",
         [Description("Page number (zero-based)")]
         int page = 0,
         [Description("Number of items per page")]