Add clearcut logging for extensions install command

packages/cli/src/commands/extensions/install.ts

@@ -45,10 +45,8 @@ export async function handleInstall(args: InstallArgs) {
       throw new Error('Either --source or --path must be provided.');
     }
 
-    const extensionName = await installExtension(installMetadata);
-    console.log(
-      `Extension "${extensionName}" installed successfully and enabled.`,
-    );
+    const name = await installExtension(installMetadata);
+    console.log(`Extension "${name}" installed successfully and enabled.`);
   } catch (error) {
     console.error(getErrorMessage(error));
     process.exit(1);

packages/cli/src/config/extension.test.ts

@@ -26,6 +26,8 @@ import {
   GEMINI_DIR,
   type GeminiCLIExtension,
   type MCPServerConfig,
+  ClearcutLogger,
+  type Config,
 } from '@google/gemini-cli-core';
 import { execSync } from 'node:child_process';
 import { SettingScope, loadSettings } from './settings.js';
@@ -52,6 +54,22 @@ vi.mock('./trustedFolders.js', async (importOriginal) => {
   };
 });
 
+vi.mock('@google/gemini-cli-core', async (importOriginal) => {
+  const actual =
+    await importOriginal<typeof import('@google/gemini-cli-core')>();
+  const mockLogExtensionInstallEvent = vi.fn();
+  return {
+    ...actual,
+    ClearcutLogger: {
+      getInstance: vi.fn(() => ({
+        logExtensionInstallEvent: mockLogExtensionInstallEvent,
+      })),
+    },
+    Config: vi.fn(),
+    ExtensionInstallEvent: vi.fn(),
+  };
+});
+
 vi.mock('child_process', async (importOriginal) => {
   const actual = await importOriginal<typeof import('child_process')>();
   return {
@@ -519,6 +537,19 @@ describe('installExtension', () => {
     });
     fs.rmSync(targetExtDir, { recursive: true, force: true });
   });
+
+  it('should log to clearcut on successful install', async () => {
+    const sourceExtDir = createExtension({
+      extensionsDir: tempHomeDir,
+      name: 'my-local-extension',
+      version: '1.0.0',
+    });
+
+    await installExtension({ source: sourceExtDir, type: 'local' });
+
+    const logger = ClearcutLogger.getInstance({} as Config);
+    expect(logger?.logExtensionInstallEvent).toHaveBeenCalled();
+  });
 });
 
 describe('uninstallExtension', () => {

packages/cli/src/config/extension.ts

@@ -8,7 +8,13 @@ import type {
   MCPServerConfig,
   GeminiCLIExtension,
 } from '@google/gemini-cli-core';
-import { GEMINI_DIR, Storage } from '@google/gemini-cli-core';
+import {
+  GEMINI_DIR,
+  Storage,
+  ClearcutLogger,
+  Config,
+  ExtensionInstallEvent,
+} from '@google/gemini-cli-core';
 import * as fs from 'node:fs';
 import * as path from 'node:path';
 import * as os from 'node:os';
@@ -18,6 +24,7 @@ import { getErrorMessage } from '../utils/errors.js';
 import { recursivelyHydrateStrings } from './extensions/variables.js';
 import { isWorkspaceTrusted } from './trustedFolders.js';
 import { resolveEnvVarsInObject } from '../utils/envVarResolver.js';
+import { randomUUID } from 'node:crypto';
 
 export const EXTENSIONS_DIRECTORY_NAME = path.join(GEMINI_DIR, 'extensions');
 
@@ -346,83 +353,120 @@ export async function installExtension(
   installMetadata: ExtensionInstallMetadata,
   cwd: string = process.cwd(),
 ): Promise<string> {
-  const settings = loadSettings(cwd).merged;
-  if (!isWorkspaceTrusted(settings)) {
-    throw new Error(
-      `Could not install extension from untrusted folder at ${installMetadata.source}`,
-    );
-  }
-
-  const extensionsDir = ExtensionStorage.getUserExtensionsDir();
-  await fs.promises.mkdir(extensionsDir, { recursive: true });
-
-  // Convert relative paths to absolute paths for the metadata file.
-  if (
-    !path.isAbsolute(installMetadata.source) &&
-    (installMetadata.type === 'local' || installMetadata.type === 'link')
-  ) {
-    installMetadata.source = path.resolve(cwd, installMetadata.source);
-  }
-
-  let localSourcePath: string;
-  let tempDir: string | undefined;
-  let newExtensionName: string | undefined;
-
-  if (installMetadata.type === 'git') {
-    tempDir = await ExtensionStorage.createTmpDir();
-    await cloneFromGit(installMetadata.source, tempDir);
-    localSourcePath = tempDir;
-  } else if (
-    installMetadata.type === 'local' ||
-    installMetadata.type === 'link'
-  ) {
-    localSourcePath = installMetadata.source;
-  } else {
-    throw new Error(`Unsupported install type: ${installMetadata.type}`);
-  }
+  const config = new Config({
+    sessionId: randomUUID(),
+    targetDir: process.cwd(),
+    cwd: process.cwd(),
+    model: '',
+    debugMode: false,
+  });
+  const logger = ClearcutLogger.getInstance(config);
+  let newExtensionConfig: ExtensionConfig | null = null;
+  let localSourcePath: string | undefined;
 
   try {
-    const newExtensionConfig = await loadExtensionConfig(localSourcePath);
-    if (!newExtensionConfig) {
+    const settings = loadSettings(cwd).merged;
+    if (!isWorkspaceTrusted(settings)) {
       throw new Error(
-        `Invalid extension at ${installMetadata.source}. Please make sure it has a valid gemini-extension.json file.`,
+        `Could not install extension from untrusted folder at ${installMetadata.source}`,
       );
     }
 
-    newExtensionName = newExtensionConfig.name;
-    const extensionStorage = new ExtensionStorage(newExtensionName);
-    const destinationPath = extensionStorage.getExtensionDir();
+    const extensionsDir = ExtensionStorage.getUserExtensionsDir();
+    await fs.promises.mkdir(extensionsDir, { recursive: true });
 
-    const installedExtensions = loadUserExtensions();
     if (
-      installedExtensions.some(
-        (installed) => installed.config.name === newExtensionName,
-      )
+      !path.isAbsolute(installMetadata.source) &&
+      (installMetadata.type === 'local' || installMetadata.type === 'link')
     ) {
-      throw new Error(
-        `Extension "${newExtensionName}" is already installed. Please uninstall it first.`,
-      );
+      installMetadata.source = path.resolve(cwd, installMetadata.source);
     }
 
-    await fs.promises.mkdir(destinationPath, { recursive: true });
+    let tempDir: string | undefined;
 
-    if (installMetadata.type === 'local' || installMetadata.type === 'git') {
-      await copyExtension(localSourcePath, destinationPath);
+    if (installMetadata.type === 'git') {
+      tempDir = await ExtensionStorage.createTmpDir();
+      await cloneFromGit(installMetadata.source, tempDir);
+      localSourcePath = tempDir;
+    } else if (
+      installMetadata.type === 'local' ||
+      installMetadata.type === 'link'
+    ) {
+      localSourcePath = installMetadata.source;
+    } else {
+      throw new Error(`Unsupported install type: ${installMetadata.type}`);
     }
 
-    const metadataString = JSON.stringify(installMetadata, null, 2);
-    const metadataPath = path.join(destinationPath, INSTALL_METADATA_FILENAME);
-    await fs.promises.writeFile(metadataPath, metadataString);
-  } finally {
-    if (tempDir) {
-      await fs.promises.rm(tempDir, { recursive: true, force: true });
+    try {
+      newExtensionConfig = await loadExtensionConfig(localSourcePath);
+      if (!newExtensionConfig) {
+        throw new Error(
+          `Invalid extension at ${installMetadata.source}. Please make sure it has a valid gemini-extension.json file.`,
+        );
+      }
+
+      const newExtensionName = newExtensionConfig.name;
+      const extensionStorage = new ExtensionStorage(newExtensionName);
+      const destinationPath = extensionStorage.getExtensionDir();
+
+      const installedExtensions = loadUserExtensions();
+      if (
+        installedExtensions.some(
+          (installed) => installed.config.name === newExtensionName,
+        )
+      ) {
+        throw new Error(
+          `Extension "${newExtensionName}" is already installed. Please uninstall it first.`,
+        );
+      }
+
+      await fs.promises.mkdir(destinationPath, { recursive: true });
+
+      if (installMetadata.type === 'local' || installMetadata.type === 'git') {
+        await copyExtension(localSourcePath, destinationPath);
+      }
+
+      const metadataString = JSON.stringify(installMetadata, null, 2);
+      const metadataPath = path.join(
+        destinationPath,
+        INSTALL_METADATA_FILENAME,
+      );
+      await fs.promises.writeFile(metadataPath, metadataString);
+    } finally {
+      if (tempDir) {
+        await fs.promises.rm(tempDir, { recursive: true, force: true });
+      }
     }
-  }
 
-  return newExtensionName;
+    logger?.logExtensionInstallEvent(
+      new ExtensionInstallEvent(
+        newExtensionConfig!.name,
+        newExtensionConfig!.version,
+        installMetadata.source,
+        'success',
+      ),
+    );
+
+    return newExtensionConfig!.name;
+  } catch (error) {
+    // Attempt to load config from the source path even if installation fails
+    // to get the name and version for logging.
+    if (!newExtensionConfig && localSourcePath) {
+      newExtensionConfig = await loadExtensionConfig(localSourcePath);
+    }
+    logger?.logExtensionInstallEvent(
+      new ExtensionInstallEvent(
+        newExtensionConfig?.name ?? '',
+        newExtensionConfig?.version ?? '',
+        installMetadata.source,
+        'error',
+      ),
+    );
+    throw error;
+  }
 }
 
-async function loadExtensionConfig(
+export async function loadExtensionConfig(
   extensionDir: string,
 ): Promise<ExtensionConfig | null> {
   const configFilePath = path.join(extensionDir, EXTENSIONS_CONFIG_FILENAME);

packages/core/index.ts

@@ -21,7 +21,9 @@ export { logIdeConnection } from './src/telemetry/loggers.js';
 export {
   IdeConnectionEvent,
   IdeConnectionType,
+  ExtensionInstallEvent,
 } from './src/telemetry/types.js';
 export { getIdeTrust } from './src/utils/ide-trust.js';
 export { makeFakeConfig } from './src/test-utils/config.js';
 export * from './src/utils/pathReader.js';
+export { ClearcutLogger } from './src/telemetry/clearcut-logger/clearcut-logger.js';

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

@@ -24,6 +24,7 @@ import type {
   InvalidChunkEvent,
   ContentRetryEvent,
   ContentRetryFailureEvent,
+  ExtensionInstallEvent,
 } from '../types.js';
 import { EventMetadataKey } from './event-metadata-key.js';
 import type { Config } from '../../config/config.js';
@@ -56,6 +57,7 @@ export enum EventNames {
   INVALID_CHUNK = 'invalid_chunk',
   CONTENT_RETRY = 'content_retry',
   CONTENT_RETRY_FAILURE = 'content_retry_failure',
+  EXTENSION_INSTALL = 'extension_install',
 }
 
 export interface LogResponse {
@@ -833,6 +835,32 @@ export class ClearcutLogger {
     this.flushIfNeeded();
   }
 
+  logExtensionInstallEvent(event: ExtensionInstallEvent): void {
+    const data: EventValue[] = [
+      {
+        gemini_cli_key: EventMetadataKey.GEMINI_CLI_EXTENSION_NAME,
+        value: event.extension_name,
+      },
+      {
+        gemini_cli_key: EventMetadataKey.GEMINI_CLI_EXTENSION_VERSION,
+        value: event.extension_version,
+      },
+      {
+        gemini_cli_key: EventMetadataKey.GEMINI_CLI_EXTENSION_SOURCE,
+        value: event.extension_source,
+      },
+      {
+        gemini_cli_key: EventMetadataKey.GEMINI_CLI_EXTENSION_INSTALL_STATUS,
+        value: event.status,
+      },
+    ];
+
+    this.enqueueLogEvent(
+      this.createLogEvent(EventNames.EXTENSION_INSTALL, data),
+    );
+    this.flushIfNeeded();
+  }
+
   /**
    * Adds default fields to data, and returns a new data array.  This fields
    * should exist on all log events.

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

@@ -331,4 +331,20 @@ export enum EventMetadataKey {
 
   // Logs the current nodejs version
   GEMINI_CLI_NODE_VERSION = 83,
+
+  // ==========================================================================
+  // Extension Install Event Keys
+  // ===========================================================================
+
+  // Logs the name of the extension.
+  GEMINI_CLI_EXTENSION_NAME = 85,
+
+  // Logs the version of the extension.
+  GEMINI_CLI_EXTENSION_VERSION = 86,
+
+  // Logs the source of the extension.
+  GEMINI_CLI_EXTENSION_SOURCE = 87,
+
+  // Logs the status of the extension install.
+  GEMINI_CLI_EXTENSION_INSTALL_STATUS = 88,
 }

packages/core/src/telemetry/types.ts

@@ -531,4 +531,28 @@ export type TelemetryEvent =
   | FileOperationEvent
   | InvalidChunkEvent
   | ContentRetryEvent
-  | ContentRetryFailureEvent;
+  | ContentRetryFailureEvent
+  | ExtensionInstallEvent;
+
+export class ExtensionInstallEvent implements BaseTelemetryEvent {
+  'event.name': 'extension_install';
+  'event.timestamp': string;
+  extension_name: string;
+  extension_version: string;
+  extension_source: string;
+  status: 'success' | 'error';
+
+  constructor(
+    extension_name: string,
+    extension_version: string,
+    extension_source: string,
+    status: 'success' | 'error',
+  ) {
+    this['event.name'] = 'extension_install';
+    this['event.timestamp'] = new Date().toISOString();
+    this.extension_name = extension_name;
+    this.extension_version = extension_version;
+    this.extension_source = extension_source;
+    this.status = status;
+  }
+}