Log Model Slash Commands (#9250)

packages/cli/src/ui/components/ModelDialog.test.tsx

@@ -39,7 +39,20 @@ const renderComponent = (
 
   const mockConfig = contextValue
     ? ({
+        // --- Functions used by ModelDialog ---
         getModel: vi.fn(() => DEFAULT_GEMINI_MODEL_AUTO),
+        setModel: vi.fn(),
+
+        // --- Functions used by ClearcutLogger ---
+        getUsageStatisticsEnabled: vi.fn(() => true),
+        getSessionId: vi.fn(() => 'mock-session-id'),
+        getDebugMode: vi.fn(() => false),
+        getContentGeneratorConfig: vi.fn(() => ({ authType: 'mock' })),
+        getUseSmartEdit: vi.fn(() => false),
+        getUseModelRouter: vi.fn(() => false),
+        getProxy: vi.fn(() => undefined),
+
+        // --- Spread test-specific overrides ---
         ...contextValue,
       } as Config)
     : undefined;
@@ -132,15 +145,15 @@ describe('<ModelDialog />', () => {
   });
 
   it('calls config.setModel and onClose when DescriptiveRadioButtonSelect.onSelect is triggered', () => {
-    const mockSetModel = vi.fn();
-    const { props } = renderComponent({}, { setModel: mockSetModel });
+    const { props, mockConfig } = renderComponent({}, {}); // Pass empty object for contextValue
 
     const childOnSelect = mockedSelect.mock.calls[0][0].onSelect;
     expect(childOnSelect).toBeDefined();
 
     childOnSelect(DEFAULT_GEMINI_MODEL);
 
-    expect(mockSetModel).toHaveBeenCalledWith(DEFAULT_GEMINI_MODEL);
+    // Assert against the default mock provided by renderComponent
+    expect(mockConfig?.setModel).toHaveBeenCalledWith(DEFAULT_GEMINI_MODEL);
     expect(props.onClose).toHaveBeenCalledTimes(1);
   });
 

packages/cli/src/ui/components/ModelDialog.tsx

@@ -17,6 +17,8 @@ import { useKeypress } from '../hooks/useKeypress.js';
 import { theme } from '../semantic-colors.js';
 import { DescriptiveRadioButtonSelect } from './shared/DescriptiveRadioButtonSelect.js';
 import { ConfigContext } from '../contexts/ConfigContext.js';
+import { ModelSlashCommandEvent } from '@google/gemini-cli-core/src/telemetry/types.js';
+import { logModelSlashCommand } from '@google/gemini-cli-core/src/telemetry/loggers.js';
 
 interface ModelDialogProps {
   onClose: () => void;
@@ -71,6 +73,8 @@ export function ModelDialog({ onClose }: ModelDialogProps): React.JSX.Element {
     (model: string) => {
       if (config) {
         config.setModel(model);
+        const event = new ModelSlashCommandEvent(model);
+        logModelSlashCommand(config, event);
       }
       onClose();
     },

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

@@ -29,6 +29,7 @@ import type {
   ExtensionUninstallEvent,
   ModelRoutingEvent,
   ExtensionEnableEvent,
+  ModelSlashCommandEvent,
   ExtensionDisableEvent,
 } from '../types.js';
 import { EventMetadataKey } from './event-metadata-key.js';
@@ -69,6 +70,7 @@ export enum EventNames {
   EXTENSION_UNINSTALL = 'extension_uninstall',
   TOOL_OUTPUT_TRUNCATED = 'tool_output_truncated',
   MODEL_ROUTING = 'model_routing',
+  MODEL_SLASH_COMMAND = 'model_slash_command',
 }
 
 export interface LogResponse {
@@ -994,6 +996,20 @@ export class ClearcutLogger {
     this.flushIfNeeded();
   }
 
+  logModelSlashCommandEvent(event: ModelSlashCommandEvent): void {
+    const data: EventValue[] = [
+      {
+        gemini_cli_key: EventMetadataKey.GEMINI_CLI_MODEL_SLASH_COMMAND,
+        value: event.model_name,
+      },
+    ];
+
+    this.enqueueLogEvent(
+      this.createLogEvent(EventNames.MODEL_SLASH_COMMAND, data),
+    );
+    this.flushIfNeeded();
+  }
+
   logExtensionDisableEvent(event: ExtensionDisableEvent): void {
     const data: EventValue[] = [
       {

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

@@ -401,4 +401,7 @@ export enum EventMetadataKey {
 
   // Logs the source of the decision.
   GEMINI_CLI_ROUTING_DECISION_SOURCE = 101,
+
+  // Logs an event when the user uses the /model command.
+  GEMINI_CLI_MODEL_SLASH_COMMAND = 103,
 }

packages/core/src/telemetry/constants.ts

@@ -30,6 +30,7 @@ export const EVENT_CONTENT_RETRY = 'gemini_cli.chat.content_retry';
 export const EVENT_CONTENT_RETRY_FAILURE =
   'gemini_cli.chat.content_retry_failure';
 export const EVENT_FILE_OPERATION = 'gemini_cli.file_operation';
+export const EVENT_MODEL_SLASH_COMMAND = 'gemini_cli.slash_command.model';
 export const METRIC_TOOL_CALL_COUNT = 'gemini_cli.tool.call.count';
 export const METRIC_TOOL_CALL_LATENCY = 'gemini_cli.tool.call.latency';
 export const METRIC_API_REQUEST_COUNT = 'gemini_cli.api.request.count';
@@ -45,3 +46,5 @@ export const EVENT_MODEL_ROUTING = 'gemini_cli.model_routing';
 export const METRIC_MODEL_ROUTING_LATENCY = 'gemini_cli.model_routing.latency';
 export const METRIC_MODEL_ROUTING_FAILURE_COUNT =
   'gemini_cli.model_routing.failure.count';
+export const METRIC_MODEL_SLASH_COMMAND_CALL_COUNT =
+  'gemini_cli.slash_command.model.call_count';

packages/core/src/telemetry/loggers.ts

@@ -32,6 +32,7 @@ import {
   EVENT_RIPGREP_FALLBACK,
   EVENT_MODEL_ROUTING,
   EVENT_EXTENSION_INSTALL,
+  EVENT_MODEL_SLASH_COMMAND,
   EVENT_EXTENSION_DISABLE,
 } from './constants.js';
 import type {
@@ -62,6 +63,7 @@ import type {
   ExtensionEnableEvent,
   ExtensionUninstallEvent,
   ExtensionInstallEvent,
+  ModelSlashCommandEvent,
 } from './types.js';
 import {
   recordApiErrorMetrics,
@@ -74,6 +76,7 @@ import {
   recordContentRetry,
   recordContentRetryFailure,
   recordModelRoutingMetrics,
+  recordModelSlashCommand,
 } from './metrics.js';
 import { isTelemetrySdkInitialized } from './sdk.js';
 import type { UiEvent } from './uiTelemetry.js';
@@ -700,6 +703,28 @@ export function logModelRouting(
   recordModelRoutingMetrics(config, event);
 }
 
+export function logModelSlashCommand(
+  config: Config,
+  event: ModelSlashCommandEvent,
+): void {
+  ClearcutLogger.getInstance(config)?.logModelSlashCommandEvent(event);
+  if (!isTelemetrySdkInitialized()) return;
+
+  const attributes: LogAttributes = {
+    ...getCommonAttributes(config),
+    ...event,
+    'event.name': EVENT_MODEL_SLASH_COMMAND,
+  };
+
+  const logger = logs.getLogger(SERVICE_NAME);
+  const logRecord: LogRecord = {
+    body: `Model slash command. Model: ${event.model_name}`,
+    attributes,
+  };
+  logger.emit(logRecord);
+  recordModelSlashCommand(config, event);
+}
+
 export function logExtensionInstallEvent(
   config: Config,
   event: ExtensionInstallEvent,

packages/core/src/telemetry/metrics.ts

@@ -21,9 +21,10 @@ import {
   METRIC_CONTENT_RETRY_FAILURE_COUNT,
   METRIC_MODEL_ROUTING_LATENCY,
   METRIC_MODEL_ROUTING_FAILURE_COUNT,
+  METRIC_MODEL_SLASH_COMMAND_CALL_COUNT,
 } from './constants.js';
 import type { Config } from '../config/config.js';
-import type { ModelRoutingEvent } from './types.js';
+import type { ModelRoutingEvent, ModelSlashCommandEvent } from './types.js';
 
 export enum FileOperation {
   CREATE = 'create',
@@ -44,6 +45,7 @@ let contentRetryCounter: Counter | undefined;
 let contentRetryFailureCounter: Counter | undefined;
 let modelRoutingLatencyHistogram: Histogram | undefined;
 let modelRoutingFailureCounter: Counter | undefined;
+let modelSlashCommandCallCounter: Counter | undefined;
 let isMetricsInitialized = false;
 
 function getCommonAttributes(config: Config): Attributes {
@@ -130,6 +132,13 @@ export function initializeMetrics(config: Config): void {
       valueType: ValueType.INT,
     },
   );
+  modelSlashCommandCallCounter = meter.createCounter(
+    METRIC_MODEL_SLASH_COMMAND_CALL_COUNT,
+    {
+      description: 'Counts model slash command calls.',
+      valueType: ValueType.INT,
+    },
+  );
 
   const sessionCounter = meter.createCounter(METRIC_SESSION_COUNT, {
     description: 'Count of CLI sessions started.',
@@ -287,6 +296,17 @@ export function recordContentRetryFailure(config: Config): void {
   contentRetryFailureCounter.add(1, getCommonAttributes(config));
 }
 
+export function recordModelSlashCommand(
+  config: Config,
+  event: ModelSlashCommandEvent,
+): void {
+  if (!modelSlashCommandCallCounter || !isMetricsInitialized) return;
+  modelSlashCommandCallCounter.add(1, {
+    ...getCommonAttributes(config),
+    'slash_command.model.model_name': event.model_name,
+  });
+}
+
 export function recordModelRoutingMetrics(
   config: Config,
   event: ModelRoutingEvent,

packages/core/src/telemetry/types.ts

@@ -567,33 +567,6 @@ export class ModelRoutingEvent implements BaseTelemetryEvent {
   }
 }
 
-export type TelemetryEvent =
-  | StartSessionEvent
-  | EndSessionEvent
-  | UserPromptEvent
-  | ToolCallEvent
-  | ApiRequestEvent
-  | ApiErrorEvent
-  | ApiResponseEvent
-  | FlashFallbackEvent
-  | LoopDetectedEvent
-  | LoopDetectionDisabledEvent
-  | NextSpeakerCheckEvent
-  | KittySequenceOverflowEvent
-  | MalformedJsonResponseEvent
-  | IdeConnectionEvent
-  | ConversationFinishedEvent
-  | SlashCommandEvent
-  | FileOperationEvent
-  | InvalidChunkEvent
-  | ContentRetryEvent
-  | ContentRetryFailureEvent
-  | ExtensionEnableEvent
-  | ExtensionInstallEvent
-  | ExtensionUninstallEvent
-  | ModelRoutingEvent
-  | ToolOutputTruncatedEvent;
-
 export class ExtensionInstallEvent implements BaseTelemetryEvent {
   'event.name': 'extension_install';
   'event.timestamp': string;
@@ -676,6 +649,46 @@ export class ExtensionEnableEvent implements BaseTelemetryEvent {
   }
 }
 
+export class ModelSlashCommandEvent implements BaseTelemetryEvent {
+  'event.name': 'model_slash_command';
+  'event.timestamp': string;
+  model_name: string;
+
+  constructor(model_name: string) {
+    this['event.name'] = 'model_slash_command';
+    this['event.timestamp'] = new Date().toISOString();
+    this.model_name = model_name;
+  }
+}
+
+export type TelemetryEvent =
+  | StartSessionEvent
+  | EndSessionEvent
+  | UserPromptEvent
+  | ToolCallEvent
+  | ApiRequestEvent
+  | ApiErrorEvent
+  | ApiResponseEvent
+  | FlashFallbackEvent
+  | LoopDetectedEvent
+  | LoopDetectionDisabledEvent
+  | NextSpeakerCheckEvent
+  | KittySequenceOverflowEvent
+  | MalformedJsonResponseEvent
+  | IdeConnectionEvent
+  | ConversationFinishedEvent
+  | SlashCommandEvent
+  | FileOperationEvent
+  | InvalidChunkEvent
+  | ContentRetryEvent
+  | ContentRetryFailureEvent
+  | ExtensionEnableEvent
+  | ExtensionInstallEvent
+  | ExtensionUninstallEvent
+  | ModelRoutingEvent
+  | ToolOutputTruncatedEvent
+  | ModelSlashCommandEvent;
+
 export class ExtensionDisableEvent implements BaseTelemetryEvent {
   'event.name': 'extension_disable';
   'event.timestamp': string;