feat: add usage statistics logging for Qwen integration

docs/cli/configuration.md

@@ -523,3 +523,5 @@ You can opt out of usage statistics collection at any time by setting the `usage
   "usageStatisticsEnabled": false
 }
 ```
+
+Note: When usage statistics are enabled, events are sent to an Alibaba Cloud RUM collection endpoint.

packages/core/src/config/config.ts

@@ -43,7 +43,7 @@ import {
   DEFAULT_GEMINI_EMBEDDING_MODEL,
   DEFAULT_GEMINI_FLASH_MODEL,
 } from './models.js';
-import { ClearcutLogger } from '../telemetry/clearcut-logger/clearcut-logger.js';
+import { QwenLogger } from '../telemetry/qwen-logger/qwen-logger.js';
 import { shouldAttemptBrowserLaunch } from '../utils/browser.js';
 import { MCPOAuthConfig } from '../mcp/oauth-provider.js';
 import { IdeClient } from '../ide/ide-client.js';
@@ -360,7 +360,7 @@ export class Config {
     }
 
     if (this.getUsageStatisticsEnabled()) {
-      ClearcutLogger.getInstance(this)?.logStartSessionEvent(
+      QwenLogger.getInstance(this)?.logStartSessionEvent(
         new StartSessionEvent(this),
       );
     } else {

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

@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-// Defines valid event metadata keys for Clearcut logging.
+// Defines valid event metadata keys for Qwen logging.
 export enum EventMetadataKey {
   GEMINI_CLI_KEY_UNKNOWN = 0,
 

packages/core/src/telemetry/integration.test.circular.ts

@@ -9,11 +9,12 @@
  */
 
 import { describe, it, expect } from 'vitest';
-import { ClearcutLogger } from './clearcut-logger/clearcut-logger.js';
+import { QwenLogger } from './qwen-logger/qwen-logger.js';
+import { RumEvent } from './qwen-logger/event-types.js';
 import { Config } from '../config/config.js';
 
 describe('Circular Reference Integration Test', () => {
-  it('should handle HttpsProxyAgent-like circular references in clearcut logging', () => {
+  it('should handle HttpsProxyAgent-like circular references in qwen logging', () => {
     // Create a mock config with proxy
     const mockConfig = {
       getTelemetryEnabled: () => true,
@@ -44,16 +45,18 @@ describe('Circular Reference Integration Test', () => {
     proxyAgentLike.sockets['cloudcode-pa.googleapis.com:443'] = [socketLike];
 
     // Create an event that would contain this circular structure
-    const problematicEvent = {
+    const problematicEvent: RumEvent = {
+      timestamp: Date.now(),
+      event_type: 'exception',
       error: new Error('Network error'),
       function_args: {
         filePath: '/test/file.txt',
         httpAgent: proxyAgentLike, // This would cause the circular reference
       },
-    };
+    } as RumEvent;
 
-    // Test that ClearcutLogger can handle this
+    // Test that QwenLogger can handle this
-    const logger = ClearcutLogger.getInstance(mockConfig);
+    const logger = QwenLogger.getInstance(mockConfig);
 
     expect(() => {
       logger?.enqueueLogEvent(problematicEvent);

packages/core/src/telemetry/loggers.ts

@@ -39,7 +39,7 @@ import {
 } from './metrics.js';
 import { isTelemetrySdkInitialized } from './sdk.js';
 import { uiTelemetryService, UiEvent } from './uiTelemetry.js';
-import { ClearcutLogger } from './clearcut-logger/clearcut-logger.js';
+import { QwenLogger } from './qwen-logger/qwen-logger.js';
 import { safeJsonStringify } from '../utils/safeJsonStringify.js';
 
 const shouldLogUserPrompts = (config: Config): boolean =>
@@ -55,7 +55,7 @@ export function logCliConfiguration(
   config: Config,
   event: StartSessionEvent,
 ): void {
-  ClearcutLogger.getInstance(config)?.logStartSessionEvent(event);
+  QwenLogger.getInstance(config)?.logStartSessionEvent(event);
   if (!isTelemetrySdkInitialized()) return;
 
   const attributes: LogAttributes = {
@@ -84,7 +84,7 @@ export function logCliConfiguration(
 }
 
 export function logUserPrompt(config: Config, event: UserPromptEvent): void {
-  ClearcutLogger.getInstance(config)?.logNewPromptEvent(event);
+  QwenLogger.getInstance(config)?.logNewPromptEvent(event);
   if (!isTelemetrySdkInitialized()) return;
 
   const attributes: LogAttributes = {
@@ -113,7 +113,7 @@ export function logToolCall(config: Config, event: ToolCallEvent): void {
     'event.timestamp': new Date().toISOString(),
   } as UiEvent;
   uiTelemetryService.addEvent(uiEvent);
-  ClearcutLogger.getInstance(config)?.logToolCallEvent(event);
+  QwenLogger.getInstance(config)?.logToolCallEvent(event);
   if (!isTelemetrySdkInitialized()) return;
 
   const attributes: LogAttributes = {
@@ -146,7 +146,7 @@ export function logToolCall(config: Config, event: ToolCallEvent): void {
 }
 
 export function logApiRequest(config: Config, event: ApiRequestEvent): void {
-  ClearcutLogger.getInstance(config)?.logApiRequestEvent(event);
+  QwenLogger.getInstance(config)?.logApiRequestEvent(event);
   if (!isTelemetrySdkInitialized()) return;
 
   const attributes: LogAttributes = {
@@ -168,7 +168,7 @@ export function logFlashFallback(
   config: Config,
   event: FlashFallbackEvent,
 ): void {
-  ClearcutLogger.getInstance(config)?.logFlashFallbackEvent(event);
+  QwenLogger.getInstance(config)?.logFlashFallbackEvent(event);
   if (!isTelemetrySdkInitialized()) return;
 
   const attributes: LogAttributes = {
@@ -193,7 +193,7 @@ export function logApiError(config: Config, event: ApiErrorEvent): void {
     'event.timestamp': new Date().toISOString(),
   } as UiEvent;
   uiTelemetryService.addEvent(uiEvent);
-  ClearcutLogger.getInstance(config)?.logApiErrorEvent(event);
+  QwenLogger.getInstance(config)?.logApiErrorEvent(event);
   if (!isTelemetrySdkInitialized()) return;
 
   const attributes: LogAttributes = {
@@ -235,7 +235,7 @@ export function logApiResponse(config: Config, event: ApiResponseEvent): void {
     'event.timestamp': new Date().toISOString(),
   } as UiEvent;
   uiTelemetryService.addEvent(uiEvent);
-  ClearcutLogger.getInstance(config)?.logApiResponseEvent(event);
+  QwenLogger.getInstance(config)?.logApiResponseEvent(event);
   if (!isTelemetrySdkInitialized()) return;
   const attributes: LogAttributes = {
     ...getCommonAttributes(config),
@@ -298,7 +298,7 @@ export function logLoopDetected(
   config: Config,
   event: LoopDetectedEvent,
 ): void {
-  ClearcutLogger.getInstance(config)?.logLoopDetectedEvent(event);
+  QwenLogger.getInstance(config)?.logLoopDetectedEvent(event);
   if (!isTelemetrySdkInitialized()) return;
 
   const attributes: LogAttributes = {
@@ -318,7 +318,7 @@ export function logNextSpeakerCheck(
   config: Config,
   event: NextSpeakerCheckEvent,
 ): void {
-  ClearcutLogger.getInstance(config)?.logNextSpeakerCheck(event);
+  QwenLogger.getInstance(config)?.logNextSpeakerCheck(event);
   if (!isTelemetrySdkInitialized()) return;
 
   const attributes: LogAttributes = {
@@ -339,7 +339,7 @@ export function logSlashCommand(
   config: Config,
   event: SlashCommandEvent,
 ): void {
-  ClearcutLogger.getInstance(config)?.logSlashCommandEvent(event);
+  QwenLogger.getInstance(config)?.logSlashCommandEvent(event);
   if (!isTelemetrySdkInitialized()) return;
 
   const attributes: LogAttributes = {

packages/core/src/telemetry/qwen-logger/event-types.ts

@@ -0,0 +1,91 @@
+// RUM Protocol Data Structures
+export interface RumApp {
+  id: string;
+  env: string;
+  version: string;
+  type: 'cli' | 'extension';
+}
+
+export interface RumUser {
+  id: string;
+}
+
+export interface RumSession {
+  id: string;
+}
+
+export interface RumView {
+  id: string;
+  name: string;
+}
+
+export interface RumEvent {
+  timestamp?: number;
+  event_type?: 'view' | 'action' | 'exception' | 'resource';
+  // [key: string]: unknown;
+}
+
+export interface RumViewEvent extends RumEvent {
+  type?: string; // View event type: pv, perf
+  name?: string; // View event name
+  view_type?: string; // View rendering type
+  time_spent?: number; // Time spent on current view in ms
+  snapshots?: string; // View snapshots JSON string, mainly for native apps
+}
+
+export interface RumActionEvent extends RumEvent {
+  type?: string; // User action type
+  name?: string; // Semantic name, e.g.: click#checkout
+  target_name?: string; // Element user interacted with (for auto-collected actions only)
+  duration?: number; // Action duration in ms
+  snapshots?: string; // Action snapshots
+  method_info?: string; // Action callback, e.g.: onClick()
+}
+
+export interface RumExceptionEvent extends RumEvent {
+  source?: string; // Error source, e.g.: console, event
+  file?: string; // Error file
+  type?: string; // Error type: crash, custom, error
+  subtype?: string; // Secondary classification of error type
+  name?: string; // Error name
+  message?: string; // Concise, readable message explaining the event
+  stack?: string; // Stack trace or supplemental information about the error
+  caused_by?: string; // Exception cause
+  line?: number; // Line number where exception occurred
+  column?: number; // Column number where exception occurred
+  thread_id?: string; // Thread ID
+  binary_images?: string; // Error source
+  snapshots?: string; // Error snapshots
+}
+
+export interface RumResourceEvent extends RumEvent {
+  type?: string; // Resource type: css, javascript, media, XHR, image, navigation (XHR/fetch will be considered as API)
+  method?: string; // HTTP request method: POST, GET, etc.
+  status_code?: string; // Resource status code
+  message?: string; // Error message content, corresponds to resource.error_msg
+  url?: string; // Resource URL
+  name?: string; // Default is URL path part, can be matched by rules or user configuration
+  provider_type?: string; // Resource provider type: first-party, cdn, ad, analytics
+  trace_id?: string; // Resource request TraceID
+  success?: number; // Resource loading success: 1 (default) success, 0 failure
+  duration?: number; // Total time spent loading resource in ms (responseEnd - redirectStart)
+  size?: number; // Resource size in bytes, corresponds to decodedBodySize
+  connect_duration?: number; // Time spent establishing connection to server in ms (connectEnd - connectStart)
+  ssl_duration?: number; // Time spent on TLS handshake in ms (connectEnd - secureConnectionStart), 0 if no SSL
+  dns_duration?: number; // Time spent resolving DNS name in ms (domainLookupEnd - domainLookupStart)
+  redirect_duration?: number; // Time spent on HTTP redirects in ms (redirectEnd - redirectStart)
+  first_byte_duration?: number; // Time waiting for first byte of response in ms (responseStart - requestStart)
+  download_duration?: number; // Time spent downloading response in ms (responseEnd - responseStart)
+  timing_data?: string; // JSON string of PerformanceResourceTiming
+  trace_data?: string; // Trace information snapshot JSON string
+  snapshots?: string; // View snapshots, mainly for native apps
+}
+
+export interface RumPayload {
+  app: RumApp;
+  user: RumUser;
+  session: RumSession;
+  view: RumView;
+  events: RumEvent[];
+  _v: string;
+}

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

@@ -0,0 +1,490 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { Buffer } from 'buffer';
+import * as https from 'https';
+import { HttpsProxyAgent } from 'https-proxy-agent';
+import { randomUUID } from 'crypto';
+
+import {
+  StartSessionEvent,
+  EndSessionEvent,
+  UserPromptEvent,
+  ToolCallEvent,
+  ApiRequestEvent,
+  ApiResponseEvent,
+  ApiErrorEvent,
+  FlashFallbackEvent,
+  LoopDetectedEvent,
+  NextSpeakerCheckEvent,
+  SlashCommandEvent,
+  MalformedJsonResponseEvent,
+} from '../types.js';
+import {
+  RumEvent,
+  RumViewEvent,
+  RumActionEvent,
+  RumResourceEvent,
+  RumExceptionEvent,
+  RumPayload,
+} from './event-types.js';
+// Removed unused EventMetadataKey import
+import { Config } from '../../config/config.js';
+import { safeJsonStringify } from '../../utils/safeJsonStringify.js';
+// Removed unused import
+import { HttpError, retryWithBackoff } from '../../utils/retry.js';
+import { getInstallationId } from '../../utils/user_id.js';
+
+// Usage statistics collection endpoint
+const USAGE_STATS_HOSTNAME = 'gb4w8c3ygj-default-sea.rum.aliyuncs.com';
+const USAGE_STATS_PATH = '/';
+
+const RUN_APP_ID = 'gb4w8c3ygj@851d5d500f08f92';
+
+export interface LogResponse {
+  nextRequestWaitMs?: number;
+}
+
+// Singleton class for batch posting log events to RUM. When a new event comes in, the elapsed time
+// is checked and events are flushed to RUM if at least a minute has passed since the last flush.
+export class QwenLogger {
+  private static instance: QwenLogger;
+  private config?: Config;
+  private readonly events: RumEvent[] = [];
+  private last_flush_time: number = Date.now();
+  private flush_interval_ms: number = 1000 * 60; // Wait at least a minute before flushing events.
+  private userId: string;
+  private sessionId: string;
+  private viewId: string;
+  private isFlushInProgress: boolean = false;
+
+  private constructor(config?: Config) {
+    this.config = config;
+    this.userId = this.generateUserId();
+    this.sessionId = this.config?.getSessionId() ?? '';
+    this.viewId = randomUUID();
+  }
+
+  private generateUserId(): string {
+    // Use installation ID as user ID for consistency
+    return `user-${getInstallationId()}`;
+  }
+
+  static getInstance(config?: Config): QwenLogger | undefined {
+    if (config === undefined || !config?.getUsageStatisticsEnabled())
+      return undefined;
+    if (!QwenLogger.instance) {
+      QwenLogger.instance = new QwenLogger(config);
+    }
+    return QwenLogger.instance;
+  }
+
+  enqueueLogEvent(event: RumEvent): void {
+    this.events.push(event);
+  }
+
+  createRumEvent(
+    eventType: 'view' | 'action' | 'exception' | 'resource',
+    properties: RumEvent,
+  ): RumEvent {
+    return {
+      timestamp: Date.now(),
+      event_type: eventType,
+      ...properties,
+    };
+  }
+
+  createViewEvent(properties: RumViewEvent): RumEvent {
+    return this.createRumEvent('view', properties);
+  }
+
+  createActionEvent(properties: RumActionEvent): RumEvent {
+    return this.createRumEvent('action', properties);
+  }
+
+  createResourceEvent(properties: RumResourceEvent): RumEvent {
+    return this.createRumEvent('resource', properties);
+  }
+
+  createExceptionEvent(properties: RumExceptionEvent): RumEvent {
+    return this.createRumEvent('exception', properties);
+  }
+
+  createRumPayload(): RumPayload {
+    const version = process.env.CLI_VERSION || process.version;
+
+    return {
+      app: {
+        id: RUN_APP_ID,
+        env: process.env.DEBUG ? 'dev' : 'prod',
+        version,
+        type: 'cli',
+      },
+      user: {
+        id: this.userId,
+      },
+      session: {
+        id: this.sessionId,
+      },
+      view: {
+        id: this.viewId,
+        name: 'qwen-code-cli',
+      },
+      events: [...this.events],
+      _v: `qwen-code@${version}`,
+    };
+  }
+
+  flushIfNeeded(): void {
+    if (Date.now() - this.last_flush_time < this.flush_interval_ms) {
+      return;
+    }
+
+    // Prevent concurrent flush operations
+    if (this.isFlushInProgress) {
+      return;
+    }
+
+    this.flushToRum().catch((error) => {
+      console.debug('Error flushing to RUM:', error);
+    });
+  }
+
+  async flushToRum(): Promise<LogResponse> {
+    if (this.config?.getDebugMode()) {
+      console.log('Flushing log events to RUM.');
+    }
+    if (this.events.length === 0) {
+      return {};
+    }
+
+    this.isFlushInProgress = true;
+
+    const rumPayload = this.createRumPayload();
+    const flushFn = () =>
+      new Promise<Buffer>((resolve, reject) => {
+        const body = safeJsonStringify(rumPayload);
+        const options = {
+          hostname: USAGE_STATS_HOSTNAME,
+          path: USAGE_STATS_PATH,
+          method: 'POST',
+          headers: {
+            'Content-Length': Buffer.byteLength(body),
+            'Content-Type': 'text/plain;charset=UTF-8',
+          },
+        };
+        const bufs: Buffer[] = [];
+        const req = https.request(
+          {
+            ...options,
+            agent: this.getProxyAgent(),
+          },
+          (res) => {
+            if (
+              res.statusCode &&
+              (res.statusCode < 200 || res.statusCode >= 300)
+            ) {
+              const err: HttpError = new Error(
+                `Request failed with status ${res.statusCode}`,
+              );
+              err.status = res.statusCode;
+              res.resume();
+              return reject(err);
+            }
+            res.on('data', (buf) => bufs.push(buf));
+            res.on('end', () => resolve(Buffer.concat(bufs)));
+          },
+        );
+        req.on('error', reject);
+        req.end(body);
+      });
+
+    try {
+      await retryWithBackoff(flushFn, {
+        maxAttempts: 3,
+        initialDelayMs: 200,
+        shouldRetry: (err: unknown) => {
+          if (!(err instanceof Error)) return false;
+          const status = (err as HttpError).status as number | undefined;
+          // If status is not available, it's likely a network error
+          if (status === undefined) return true;
+
+          // Retry on 429 (Too many Requests) and 5xx server errors.
+          return status === 429 || (status >= 500 && status < 600);
+        },
+      });
+
+      this.events.splice(0, this.events.length);
+      this.last_flush_time = Date.now();
+      return {};
+    } catch (error) {
+      if (this.config?.getDebugMode()) {
+        console.error('RUM flush failed after multiple retries.', error);
+      }
+      return {};
+    } finally {
+      this.isFlushInProgress = false;
+    }
+  }
+
+  // Visible for testing. Decodes protobuf-encoded response from Qwen server.
+  decodeLogResponse(buf: Buffer): LogResponse | undefined {
+    // TODO(obrienowen): return specific errors to facilitate debugging.
+    if (buf.length < 1) {
+      return undefined;
+    }
+
+    // The first byte of the buffer is `field<<3 | type`. We're looking for field
+    // 1, with type varint, represented by type=0. If the first byte isn't 8, that
+    // means field 1 is missing or the message is corrupted. Either way, we return
+    // undefined.
+    if (buf.readUInt8(0) !== 8) {
+      return undefined;
+    }
+
+    let ms = BigInt(0);
+    let cont = true;
+
+    // In each byte, the most significant bit is the continuation bit. If it's
+    // set, we keep going. The lowest 7 bits, are data bits. They are concatenated
+    // in reverse order to form the final number.
+    for (let i = 1; cont && i < buf.length; i++) {
+      const byte = buf.readUInt8(i);
+      ms |= BigInt(byte & 0x7f) << BigInt(7 * (i - 1));
+      cont = (byte & 0x80) !== 0;
+    }
+
+    if (cont) {
+      // We have fallen off the buffer without seeing a terminating byte. The
+      // message is corrupted.
+      return undefined;
+    }
+
+    const returnVal = {
+      nextRequestWaitMs: Number(ms),
+    };
+    return returnVal;
+  }
+
+  logStartSessionEvent(event: StartSessionEvent): void {
+    const applicationEvent = this.createViewEvent({
+      type: 'session',
+      name: 'session_start',
+      snapshots: JSON.stringify({
+        model: event.model,
+        embedding_model: event.embedding_model,
+        sandbox_enabled: event.sandbox_enabled,
+        core_tools_enabled: event.core_tools_enabled,
+        approval_mode: event.approval_mode,
+        api_key_enabled: event.api_key_enabled,
+        vertex_ai_enabled: event.vertex_ai_enabled,
+        debug_enabled: event.debug_enabled,
+        mcp_servers: event.mcp_servers,
+        telemetry_enabled: event.telemetry_enabled,
+        telemetry_log_user_prompts_enabled:
+          event.telemetry_log_user_prompts_enabled,
+        file_filtering_respect_git_ignore:
+          event.file_filtering_respect_git_ignore,
+      }),
+    });
+
+    // Flush start event immediately
+    this.enqueueLogEvent(applicationEvent);
+    this.flushToRum().catch((error: unknown) => {
+      console.debug('Error flushing to RUM:', error);
+    });
+  }
+
+  logNewPromptEvent(event: UserPromptEvent): void {
+    const rumEvent = this.createActionEvent({
+      type: 'user_prompt',
+      name: 'user_prompt',
+      snapshots: JSON.stringify({
+        prompt_length: event.prompt_length,
+        prompt_id: event.prompt_id,
+        auth_type: event.auth_type,
+      }),
+    });
+
+    this.enqueueLogEvent(rumEvent);
+    this.flushIfNeeded();
+  }
+
+  logToolCallEvent(event: ToolCallEvent): void {
+    const rumEvent = this.createActionEvent({
+      type: 'tool_call',
+      name: `tool_call#${event.function_name}`,
+      snapshots: JSON.stringify({
+        function_name: event.function_name,
+        prompt_id: event.prompt_id,
+        decision: event.decision,
+        success: event.success,
+        duration_ms: event.duration_ms,
+        error: event.error,
+        error_type: event.error_type,
+      }),
+    });
+
+    this.enqueueLogEvent(rumEvent);
+    this.flushIfNeeded();
+  }
+
+  logApiRequestEvent(event: ApiRequestEvent): void {
+    const rumEvent = this.createResourceEvent({
+      type: 'api',
+      name: 'api_request',
+      snapshots: JSON.stringify({
+        model: event.model,
+        prompt_id: event.prompt_id,
+      }),
+    });
+
+    this.enqueueLogEvent(rumEvent);
+    this.flushIfNeeded();
+  }
+
+  logApiResponseEvent(event: ApiResponseEvent): void {
+    const rumEvent = this.createResourceEvent({
+      type: 'api',
+      name: 'api_response',
+      status_code: event.status_code?.toString() ?? '',
+      duration: event.duration_ms,
+      success: event.status_code === 200 ? 1 : 0,
+      message: event.error,
+      snapshots: JSON.stringify({
+        model: event.model,
+        prompt_id: event.prompt_id,
+        input_token_count: event.input_token_count,
+        output_token_count: event.output_token_count,
+        cached_content_token_count: event.cached_content_token_count,
+        thoughts_token_count: event.thoughts_token_count,
+        tool_token_count: event.tool_token_count,
+        auth_type: event.auth_type,
+      }),
+    });
+
+    this.enqueueLogEvent(rumEvent);
+    this.flushIfNeeded();
+  }
+
+  logApiErrorEvent(event: ApiErrorEvent): void {
+    const rumEvent = this.createExceptionEvent({
+      type: 'error',
+      subtype: 'api_error',
+      message: event.error,
+      snapshots: JSON.stringify({
+        model: event.model,
+        prompt_id: event.prompt_id,
+        error_type: event.error_type,
+        status_code: event.status_code,
+        duration_ms: event.duration_ms,
+        auth_type: event.auth_type,
+      }),
+    });
+
+    this.enqueueLogEvent(rumEvent);
+    this.flushIfNeeded();
+  }
+
+  logFlashFallbackEvent(event: FlashFallbackEvent): void {
+    const rumEvent = this.createActionEvent({
+      type: 'fallback',
+      name: 'flash_fallback',
+      snapshots: JSON.stringify({
+        auth_type: event.auth_type,
+      }),
+    });
+
+    this.enqueueLogEvent(rumEvent);
+    this.flushIfNeeded();
+  }
+
+  logLoopDetectedEvent(event: LoopDetectedEvent): void {
+    const rumEvent = this.createExceptionEvent({
+      type: 'error',
+      subtype: 'loop_detected',
+      snapshots: JSON.stringify({
+        prompt_id: event.prompt_id,
+        loop_type: event.loop_type,
+      }),
+    });
+
+    this.enqueueLogEvent(rumEvent);
+    this.flushIfNeeded();
+  }
+
+  logNextSpeakerCheck(event: NextSpeakerCheckEvent): void {
+    const rumEvent = this.createActionEvent({
+      type: 'check',
+      name: 'next_speaker_check',
+      snapshots: JSON.stringify({
+        prompt_id: event.prompt_id,
+        finish_reason: event.finish_reason,
+        result: event.result,
+      }),
+    });
+
+    this.enqueueLogEvent(rumEvent);
+    this.flushIfNeeded();
+  }
+
+  logSlashCommandEvent(event: SlashCommandEvent): void {
+    const rumEvent = this.createActionEvent({
+      type: 'command',
+      name: 'slash_command',
+      snapshots: JSON.stringify({
+        command: event.command,
+        subcommand: event.subcommand,
+      }),
+    });
+
+    this.enqueueLogEvent(rumEvent);
+    this.flushIfNeeded();
+  }
+
+  logMalformedJsonResponseEvent(event: MalformedJsonResponseEvent): void {
+    const rumEvent = this.createExceptionEvent({
+      type: 'error',
+      subtype: 'malformed_json_response',
+      snapshots: JSON.stringify({
+        model: event.model,
+      }),
+    });
+
+    this.enqueueLogEvent(rumEvent);
+    this.flushIfNeeded();
+  }
+
+  logEndSessionEvent(_event: EndSessionEvent): void {
+    const applicationEvent = this.createViewEvent({
+      type: 'session',
+      name: 'session_end',
+    });
+
+    // Flush immediately on session end.
+    this.enqueueLogEvent(applicationEvent);
+    this.flushToRum().catch((error: unknown) => {
+      console.debug('Error flushing to RUM:', error);
+    });
+  }
+
+  getProxyAgent() {
+    const proxyUrl = this.config?.getProxy();
+    if (!proxyUrl) return undefined;
+    // undici which is widely used in the repo can only support http & https proxy protocol,
+    // https://github.com/nodejs/undici/issues/2224
+    if (proxyUrl.startsWith('http')) {
+      return new HttpsProxyAgent(proxyUrl);
+    } else {
+      throw new Error('Unsupported proxy type');
+    }
+  }
+
+  shutdown() {
+    const event = new EndSessionEvent(this.config);
+    this.logEndSessionEvent(event);
+  }
+}

packages/core/src/telemetry/sdk.ts

@@ -28,7 +28,7 @@ import { HttpInstrumentation } from '@opentelemetry/instrumentation-http';
 import { Config } from '../config/config.js';
 import { SERVICE_NAME } from './constants.js';
 import { initializeMetrics } from './metrics.js';
-import { ClearcutLogger } from './clearcut-logger/clearcut-logger.js';
+import { QwenLogger } from './qwen-logger/qwen-logger.js';
 import {
   FileLogExporter,
   FileMetricExporter,
@@ -141,7 +141,7 @@ export async function shutdownTelemetry(): Promise<void> {
     return;
   }
   try {
-    ClearcutLogger.getInstance()?.shutdown();
+    QwenLogger.getInstance()?.shutdown();
     await sdk.shutdown();
     console.log('OpenTelemetry SDK shut down successfully.');
   } catch (error) {