Metric(extension) - Add logging for uninstalling extension (#8293)

Co-authored-by: Shi Shu <shii@google.com>

packages/core/src/telemetry/clearcut-logger/clearcut-logger.ts

@@ -26,6 +26,7 @@ import type {
   ContentRetryFailureEvent,
   ExtensionInstallEvent,
   ToolOutputTruncatedEvent,
+  ExtensionUninstallEvent,
 } from '../types.js';
 import { EventMetadataKey } from './event-metadata-key.js';
 import type { Config } from '../../config/config.js';
@@ -59,6 +60,7 @@ export enum EventNames {
   CONTENT_RETRY = 'content_retry',
   CONTENT_RETRY_FAILURE = 'content_retry_failure',
   EXTENSION_INSTALL = 'extension_install',
+  EXTENSION_UNINSTALL = 'extension_uninstall',
   TOOL_OUTPUT_TRUNCATED = 'tool_output_truncated',
 }
 
@@ -863,6 +865,24 @@ export class ClearcutLogger {
     this.flushIfNeeded();
   }
 
+  logExtensionUninstallEvent(event: ExtensionUninstallEvent): void {
+    const data: EventValue[] = [
+      {
+        gemini_cli_key: EventMetadataKey.GEMINI_CLI_EXTENSION_NAME,
+        value: event.extension_name,
+      },
+      {
+        gemini_cli_key: EventMetadataKey.GEMINI_CLI_EXTENSION_UNINSTALL_STATUS,
+        value: event.status,
+      },
+    ];
+
+    this.enqueueLogEvent(
+      this.createLogEvent(EventNames.EXTENSION_UNINSTALL, data),
+    );
+    this.flushIfNeeded();
+  }
+
   logToolOutputTruncatedEvent(event: ToolOutputTruncatedEvent): void {
     const data: EventValue[] = [
       {

packages/core/src/telemetry/clearcut-logger/event-metadata-key.ts

@@ -350,6 +350,9 @@ export enum EventMetadataKey {
   // Logs the status of the extension install.
   GEMINI_CLI_EXTENSION_INSTALL_STATUS = 88,
 
+  // Logs the status of the extension uninstall
+  GEMINI_CLI_EXTENSION_UNINSTALL_STATUS = 96,
+
   // ==========================================================================
   // Tool Output Truncated Event Keys
   // ===========================================================================

packages/core/src/telemetry/types.ts

@@ -535,6 +535,7 @@ export type TelemetryEvent =
   | ContentRetryEvent
   | ContentRetryFailureEvent
   | ExtensionInstallEvent
+  | ExtensionUninstallEvent
   | ToolOutputTruncatedEvent;
 
 export class ExtensionInstallEvent implements BaseTelemetryEvent {
@@ -590,3 +591,17 @@ export class ToolOutputTruncatedEvent implements BaseTelemetryEvent {
     this.lines = details.lines;
   }
 }
+
+export class ExtensionUninstallEvent implements BaseTelemetryEvent {
+  'event.name': 'extension_uninstall';
+  'event.timestamp': string;
+  extension_name: string;
+  status: 'success' | 'error';
+
+  constructor(extension_name: string, status: 'success' | 'error') {
+    this['event.name'] = 'extension_uninstall';
+    this['event.timestamp'] = new Date().toISOString();
+    this.extension_name = extension_name;
+    this.status = status;
+  }
+}