From 34e8239c82cb2d11a810138053f33573e23a0daf Mon Sep 17 00:00:00 2001
From: tyaginidhi <tyaginidhi@users.noreply.github.com>
Date: Thu, 2 May 2024 12:55:49 +0530
Subject: [PATCH] Telemetry for ECS fetch and config read (#925)

---
 src/common/ecs-features/ecsFeatureClient.ts      | 9 ++++++---
 src/common/ecs-features/ecsTelemetryConstants.ts | 8 ++++++++
 2 files changed, 14 insertions(+), 3 deletions(-)
 create mode 100644 src/common/ecs-features/ecsTelemetryConstants.ts

diff --git a/src/common/ecs-features/ecsFeatureClient.ts b/src/common/ecs-features/ecsFeatureClient.ts
index 589aedd4..2d8852e2 100644
--- a/src/common/ecs-features/ecsFeatureClient.ts
+++ b/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 });
         }
     }
 
diff --git a/src/common/ecs-features/ecsTelemetryConstants.ts b/src/common/ecs-features/ecsTelemetryConstants.ts
new file mode 100644
index 00000000..dbbe721a
--- /dev/null
+++ b/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';