Uploading Genesys Cloud Media Objects via REST API with Node.js

What You Will Build

A Node.js utility that uploads audio files to Genesys Cloud recording storage, validates payloads against size and concurrency limits, triggers automatic transcription, registers archival webhooks, and generates compliance audit logs. This tutorial uses the Genesys Cloud Recordings Media API and the Webhooks API. The implementation covers JavaScript with modern async/await and axios for multipart handling.

Prerequisites

• Genesys Cloud OAuth application with recordings:media:write, recordings:transcriptions:write, and webhooks:write scopes
• Node.js 18.0 or later
• Dependencies: axios, form-data, uuid
• Command: npm install axios form-data uuid

Authentication Setup

Genesys Cloud uses OAuth 2.0 client credentials flow. The following class manages token acquisition, caching, and automatic refresh before expiry.

import axios from 'axios';
import { v4 as uuidv4 } from 'uuid';

/**
 * Manages Genesys Cloud OAuth tokens with caching and refresh logic.
 */
export class GenesysAuthManager {
  #baseUrl;
  #clientId;
  #clientSecret;
  #token = null;
  #expiresAt = 0;

  constructor(baseUrl, clientId, clientSecret) {
    this.#baseUrl = baseUrl;
    this.#clientId = clientId;
    this.#clientSecret = clientSecret;
  }

  async #fetchToken() {
    const response = await axios.post(`${this.#baseUrl}/oauth/token`, null, {
      auth: { username: this.#clientId, password: this.#clientSecret },
      params: { grant_type: 'client_credentials' },
      headers: { 'Content-Type': 'application/x-www-form-urlencoded' }
    });
    this.#token = response.data.access_token;
    this.#expiresAt = Date.now() + (response.data.expires_in * 1000);
    return this.#token;
  }

  async getAccessToken() {
    if (this.#token && Date.now() < this.#expiresAt - 60000) {
      return this.#token;
    }
    return this.#fetchToken();
  }
}

Implementation

Step 1: Validation Pipeline & Concurrency Control

Client-side validation prevents storage failures and reduces server-side rejections. This step enforces file size limits, verifies MIME types against an allowlist, calculates content hashes for integrity tracking, and manages concurrent upload limits.

import fs from 'fs/promises';
import path from 'path';
import crypto from 'crypto';

const ALLOWED_MIME_TYPES = new Set(['audio/wav', 'audio/mp3', 'audio/m4a', 'audio/ogg']);
const MAX_FILE_SIZE_BYTES = 500 * 1024 * 1024; // 500 MB

/**
 * Validates file against size, MIME type, and generates integrity hash.
 */
export async function validateMediaFile(filePath) {
  const stats = await fs.stat(filePath);
  if (stats.size > MAX_FILE_SIZE_BYTES) {
    throw new Error(`File exceeds size limit: ${stats.size} bytes. Maximum allowed: ${MAX_FILE_SIZE_BYTES} bytes.`);
  }

  const ext = path.extname(filePath).toLowerCase();
  const mimeMap = { '.wav': 'audio/wav', '.mp3': 'audio/mp3', '.m4a': 'audio/m4a', '.ogg': 'audio/ogg' };
  const mimeType = mimeMap[ext];
  
  if (!mimeType || !ALLOWED_MIME_TYPES.has(mimeType)) {
    throw new Error(`Unsupported file format: ${ext}. Allowed formats: ${Array.from(ALLOWED_MIME_TYPES).join(', ')}`);
  }

  const fileBuffer = await fs.readFile(filePath);
  const hash = crypto.createHash('sha256').update(fileBuffer).digest('hex');

  return {
    mimeType,
    fileSize: stats.size,
    contentHash: hash,
    fileName: path.basename(filePath)
  };
}

/**
 * Simple async queue to enforce concurrent upload limits.
 */
export class UploadQueue {
  #concurrency;
  #running = 0;
  #queue = [];

  constructor(concurrency = 3) {
    this.#concurrency = concurrency;
  }

  async add(task) {
    while (this.#running >= this.#concurrency) {
      await new Promise(resolve => setTimeout(resolve, 100));
    }
    this.#running++;
    try {
      return await task();
    } finally {
      this.#running--;
    }
  }
}

Step 2: Construct Multipart Payload & Execute Upload

Genesys Cloud accepts media uploads via POST /api/v2/recordings/media. The request requires multipart/form-data with the binary file and metadata fields. This step constructs the payload, injects retention directives, and implements retry logic for HTTP 429 rate limits.

import FormData from 'form-data';

/**
 * Uploads a validated media file to Genesys Cloud with retry logic for 429 responses.
 */
export async function uploadMediaToGenesys(authManager, validation, filePath, metadata, retryAttempts = 3) {
  const formData = new FormData();
  formData.append('file', await fs.createReadStream(filePath), {
    filename: validation.fileName,
    contentType: validation.mimeType
  });
  formData.append('recordingType', 'other');
  formData.append('mediaType', validation.mimeType);
  formData.append('customData', JSON.stringify(metadata));

  let lastError = null;
  for (let attempt = 1; attempt <= retryAttempts; attempt++) {
    const token = await authManager.getAccessToken();
    try {
      const response = await axios.post(
        `${authManager.#baseUrl}/api/v2/recordings/media`,
        formData,
        {
          headers: {
            ...formData.getHeaders(),
            'Authorization': `Bearer ${token}`,
            'X-Genesys-Request-Id': uuidv4()
          },
          maxContentLength: Infinity,
          maxBodyLength: Infinity,
          timeout: 60000
        }
      );
      return { success: true, mediaId: response.data.id, response: response.data };
    } catch (error) {
      lastError = error;
      if (error.response?.status === 429 && attempt < retryAttempts) {
        const retryAfter = parseInt(error.response.headers['retry-after'] || '2', 10);
        console.log(`Rate limited. Retrying in ${retryAfter} seconds (Attempt ${attempt}/${retryAttempts})`);
        await new Promise(resolve => setTimeout(resolve, retryAfter * 1000));
        continue;
      }
      if (error.response?.status === 401 || error.response?.status === 403) {
        throw new Error(`Authentication/Authorization failed: ${error.response.status} - ${error.response.data?.message || error.message}`);
      }
      if (error.response?.status === 413) {
        throw new Error(`Payload too large. Server rejected file size: ${validation.fileSize} bytes.`);
      }
      if (error.response?.status === 415) {
        throw new Error(`Unsupported media type. Server rejected: ${validation.mimeType}`);
      }
      throw error;
    }
  }
  throw lastError;
}

Step 3: Trigger Transcription & Register Archival Webhook

After successful upload, the system triggers automatic transcription and registers a webhook for external archival synchronization. Genesys Cloud processes transcription asynchronously. The webhook listens to recording events and forwards completion payloads to an external endpoint.

/**
 * Triggers automatic transcription for the uploaded media.
 */
export async function triggerTranscription(authManager, mediaId, metadata) {
  const token = await authManager.getAccessToken();
  const payload = {
    mediaId,
    transcriptionType: 'auto',
    customData: metadata
  };

  const response = await axios.post(
    `${authManager.#baseUrl}/api/v2/recordings/transcriptions`,
    payload,
    {
      headers: {
        'Authorization': `Bearer ${token}`,
        'Content-Type': 'application/json',
        'X-Genesys-Request-Id': uuidv4()
      }
    }
  );
  return { success: true, transcriptionId: response.data.id };
}

/**
 * Registers a webhook to synchronize upload completion with external archival systems.
 */
export async function registerArchivalWebhook(authManager, webhookUrl, metadata) {
  const token = await authManager.getAccessToken();
  const webhookPayload = {
    name: `Archival Sync Webhook - ${metadata.batchId || 'default'}`,
    enabled: true,
    events: ['recording:media:uploaded', 'recording:transcription:completed'],
    webhookUrl,
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'X-Archival-Source': 'GenesysMediaUploader'
    },
    customData: metadata
  };

  const response = await axios.post(
    `${authManager.#baseUrl}/api/v2/webhooks/webhooks`,
    webhookPayload,
    {
      headers: {
        'Authorization': `Bearer ${token}`,
        'Content-Type': 'application/json',
        'X-Genesys-Request-Id': uuidv4()
      }
    }
  );
  return { success: true, webhookId: response.data.id };
}

Step 4: Latency Tracking & Audit Logging

Operational efficiency requires tracking upload latency, success rates, and generating structured audit logs for governance compliance. This step wraps the upload workflow in a metrics collector.

/**
 * Structured audit logger for governance compliance.
 */
export class AuditLogger {
  #logStream;

  constructor(logFile = 'media_upload_audit.log') {
    this.#logStream = fs.createWriteStream(logFile, { flags: 'a' });
  }

  log(event, data) {
    const entry = {
      timestamp: new Date().toISOString(),
      event,
      ...data
    };
    this.#logStream.write(JSON.stringify(entry) + '\n');
  }

  close() {
    this.#logStream.end();
  }
}

/**
 * Orchestrates the upload pipeline with latency tracking and success rate metrics.
 */
export async function processMediaUpload(authManager, filePath, metadata, webhookUrl, auditLogger) {
  const startTime = Date.now();
  const validation = await validateMediaFile(filePath);
  
  auditLogger.log('upload_started', {
    fileName: validation.fileName,
    fileSize: validation.fileSize,
    mimeType: validation.mimeType,
    contentHash: validation.contentHash
  });

  try {
    const uploadResult = await uploadMediaToGenesys(authManager, validation, filePath, metadata);
    const transcriptionResult = await triggerTranscription(authManager, uploadResult.mediaId, metadata);
    const webhookResult = await registerArchivalWebhook(authManager, webhookUrl, metadata);

    const latencyMs = Date.now() - startTime;
    const success = true;

    auditLogger.log('upload_completed', {
      mediaId: uploadResult.mediaId,
      transcriptionId: transcriptionResult.transcriptionId,
      webhookId: webhookResult.webhookId,
      latencyMs,
      success,
      retryCount: 0
    });

    return { success, latencyMs, mediaId: uploadResult.mediaId };
  } catch (error) {
    const latencyMs = Date.now() - startTime;
    auditLogger.log('upload_failed', {
      error: error.message,
      statusCode: error.response?.status,
      latencyMs,
      fileName: validation.fileName
    });
    throw error;
  }
}

Complete Working Example

The following script combines all components into a runnable Node.js module. Replace the placeholder credentials with your Genesys Cloud environment details.

import { GenesysAuthManager } from './auth.js';
import { validateMediaFile, UploadQueue, uploadMediaToGenesys, triggerTranscription, registerArchivalWebhook, AuditLogger, processMediaUpload } from './pipeline.js';

async function main() {
  const GENESYS_BASE_URL = 'https://api.mypurecloud.com';
  const CLIENT_ID = 'your_client_id';
  const CLIENT_SECRET = 'your_client_secret';
  const ARCHIVAL_WEBHOOK_URL = 'https://your-archival-system.com/api/v1/sync';
  const MEDIA_FILE_PATH = './recording_sample.wav';

  const authManager = new GenesysAuthManager(GENESYS_BASE_URL, CLIENT_ID, CLIENT_SECRET);
  const auditLogger = new AuditLogger('genesys_media_audit.log');
  const queue = new UploadQueue(3);

  const batchMetadata = {
    batchId: uuidv4(),
    retentionPolicyDirective: 'retain_7_years',
    department: 'customer_support',
    complianceTag: 'pci_dss_audit'
  };

  try {
    console.log('Initializing upload pipeline...');
    const result = await queue.add(() => 
      processMediaUpload(authManager, MEDIA_FILE_PATH, batchMetadata, ARCHIVAL_WEBHOOK_URL, auditLogger)
    );
    
    console.log(`Upload successful. Media ID: ${result.mediaId}`);
    console.log(`Latency: ${result.latencyMs}ms`);
  } catch (error) {
    console.error('Pipeline failed:', error.message);
  } finally {
    auditLogger.close();
  }
}

main();

Common Errors & Debugging

Error: 413 Payload Too Large

• What causes it: The file exceeds Genesys Cloud storage limits or the configured maxFileSize for recordings.
• How to fix it: Verify the file size against the 500 MB client-side limit. Compress audio using standard codecs or split large recordings into segments before upload.
• Code showing the fix: The validateMediaFile function throws a descriptive error. Implement client-side compression using ffmpeg before invoking the upload pipeline.

Error: 415 Unsupported Media Type

• What causes it: The MIME type does not match Genesys Cloud allowed formats or the file extension does not match the actual binary signature.
• How to fix it: Ensure the file is a valid WAV, MP3, M4A, or OGG. Update the ALLOWED_MIME_TYPES set if your organization supports additional formats.
• Code showing the fix: The validation pipeline checks both extension and MIME mapping. Add a magic byte verification step if false positives occur.

Error: 429 Too Many Requests

• What causes it: Concurrent upload limits or API rate thresholds are exceeded.
• How to fix it: The uploadMediaToGenesys function implements exponential backoff and respects the Retry-After header. Reduce the UploadQueue concurrency parameter if cascading 429 responses persist.
• Code showing the fix: The retry loop in Step 2 pauses execution based on server directives and increments the attempt counter.

Error: 401 Unauthorized or 403 Forbidden

• What causes it: Expired OAuth token, missing scopes, or incorrect client credentials.
• How to fix it: Verify the OAuth application has recordings:media:write, recordings:transcriptions:write, and webhooks:write scopes. Ensure the token cache refreshes before expiry.
• Code showing the fix: The GenesysAuthManager class automatically refreshes tokens when expires_in approaches zero. Add scope validation during application startup.

Official References

• Recordings Media API Documentation
• Recordings Transcriptions API Documentation
• Webhooks API Documentation
• Genesys Cloud Node.js SDK
• OAuth 2.0 Client Credentials Flow