Telemetry for ECS fetch and config read (#925)

src/common/ecs-features/ecsFeatureClient.ts

@@ -8,6 +8,7 @@ import { ITelemetry } from "../../client/telemetry/ITelemetry";
 import { createECSRequestURL } from "./ecsFeatureUtil";
 import { ECSFeatureDefinition as ECSFeatureProperties } from "./ecsFeatureProperties";
 import { ECSAPIFeatureFlagFilters } from "./ecsFeatureFlagFilters";
+import { ECSConfigFailedInit, ECSConfigSuccessfulInit } from "./ecsTelemetryConstants";
 
 export abstract class ECSFeaturesClient {
     private static _ecsConfig: Record<string, string | boolean>;
@@ -26,14 +27,16 @@ export abstract class ECSFeaturesClient {
                 throw new Error('Request failed');
             }
             const result = await response.json();
-            // Update telemetry in other PR
-            // telemetry.sendTelemetryEvent('ECSConfig', {});
 
             // Initialize ECS config
             this._ecsConfig = result[clientName];
+
+            // capture telemetry
+            telemetry.sendTelemetryEvent(ECSConfigSuccessfulInit, { clientName: clientName, configFlagCount: Object.keys(this._ecsConfig).length.toString() });
         } catch (error) {
+            const message = (error as Error)?.message;
             // Log error
-            // telemetry.sendTelemetryEvent('ECSConfigError', {});
+            telemetry.sendTelemetryErrorEvent(ECSConfigFailedInit, { error: message });
         }
     }
 

src/common/ecs-features/ecsTelemetryConstants.ts

@@ -0,0 +1,8 @@
+/*
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for license information.
+ */
+
+// Telemetry Event Names
+export const ECSConfigSuccessfulInit = 'ECSConfigSuccessfulInit';
+export const ECSConfigFailedInit = 'ECSConfigFailedInit';