Support collecting GC collect only trace using a simplified profile

documentation/openapi.json

@@ -2174,7 +2174,8 @@
           "Cpu",
           "Http",
           "Logs",
-          "Metrics"
+          "Metrics",
+          "GcCollect"
         ],
         "type": "string"
       },

documentation/schema.json

@@ -2093,13 +2093,15 @@
         "Cpu",
         "Http",
         "Logs",
-        "Metrics"
+        "Metrics",
+        "GcCollect"
       ],
       "enum": [
         "Cpu",
         "Http",
         "Logs",
-        "Metrics"
+        "Metrics",
+        "GcCollect"
       ]
     },
     "EventPipeProvider": {

src/Microsoft.Diagnostics.Monitoring.WebApi/Controllers/DiagController.cs

@@ -33,7 +33,7 @@ namespace Microsoft.Diagnostics.Monitoring.WebApi.Controllers
     [ProducesResponseType(typeof(void), StatusCodes.Status401Unauthorized)]
     public partial class DiagController : DiagnosticsControllerBase
     {
-        private const TraceProfile DefaultTraceProfiles = TraceProfile.Cpu | TraceProfile.Http | TraceProfile.Metrics;
+        private const TraceProfile DefaultTraceProfiles = TraceProfile.Cpu | TraceProfile.Http | TraceProfile.Metrics | TraceProfile.GcCollect;
 
         private readonly IOptions<DiagnosticPortOptions> _diagnosticPortOptions;
         private readonly IOptions<CallStacksOptions> _callStacksOptions;

src/Microsoft.Diagnostics.Monitoring.WebApi/Models/TraceProfile.cs

@@ -11,6 +11,7 @@ public enum TraceProfile
         Cpu = 0x1,
         Http = 0x2,
         Logs = 0x4,
-        Metrics = 0x8
+        Metrics = 0x8,
+        GcCollect = 0x10,
     }
 }

src/Microsoft.Diagnostics.Monitoring.WebApi/Utilities/TraceUtilities.cs

@@ -44,6 +44,10 @@ public static MonitoringSourceConfiguration GetTraceConfiguration(Models.TracePr
 
                 configurations.Add(new MetricSourceConfiguration(options.GetIntervalSeconds(), defaultProviders));
             }
+            if (profile.HasFlag(Models.TraceProfile.GcCollect))
+            {
+                configurations.Add(new GcCollectConfiguration());
+            }
 
             return new AggregateSourceConfiguration(configurations.ToArray());
         }

src/Tests/Microsoft.Diagnostics.Monitoring.Tool.UnitTestCommon/ActionTestsHelper.cs

@@ -57,6 +57,7 @@ public static IEnumerable<object[]> GetTfmsAndTraceProfiles()
                 yield return new object[] { tfm, TraceProfile.Metrics };
                 yield return new object[] { tfm, TraceProfile.Http };
                 yield return new object[] { tfm, TraceProfile.Cpu };
+                yield return new object[] { tfm, TraceProfile.GcCollect };
             }
         }