Routing Genesys Cloud System Alerts to Outbound Campaigns via EventBridge with Node.js

What You Will Build

• A Node.js microservice that consumes Genesys Cloud system alerts, validates them against event bus constraints, and triggers outbound campaigns based on a configurable severity matrix.
• This implementation uses the Genesys Cloud Outbound Campaign API, Events API, and Alert API via the official JavaScript SDK combined with Express.js for routing.
• The code is written in modern JavaScript with async/await, AJV for schema validation, and Axios for external webhook synchronization.

Prerequisites

• OAuth Client Credentials flow with required scopes: outbound:campaign:read, outbound:campaign:write, alerts:read, events:read
• Genesys Cloud Platform Client SDK v2 (@genesyscloud/platform-client-v2)
• Node.js 18 LTS or higher
• External dependencies: express, axios, ajv, uuid, dotenv

Authentication Setup

The Genesys Cloud JavaScript SDK handles token acquisition and automatic refresh when configured with client credentials. You must initialize the platform client before any API calls. The SDK caches the access token and refreshes it silently before expiration.

require('dotenv').config();
const { PureCloudPlatformClientV2 } = require('@genesyscloud/platform-client-v2');

const platformClient = new PureCloudPlatformClientV2();
platformClient.setEnvironment(process.env.GC_ENVIRONMENT || 'mypurecloud.com');

async function initializeAuth() {
  try {
    await platformClient.loginClientCredentials({
      client_id: process.env.GC_CLIENT_ID,
      client_secret: process.env.GC_CLIENT_SECRET
    });
    console.log('OAuth client credentials flow successful. Token cached.');
  } catch (error) {
    console.error('Authentication failed:', error.response?.data || error.message);
    process.exit(1);
  }
}

Implementation

Step 1: Schema Validation & Severity Matrix Configuration

Event bus constraints require strict payload validation before routing. You define a JSON schema that enforces alert structure, then map alert severities to outbound campaign actions. This prevents malformed events from reaching the Outbound API and blocks routing failures caused by missing identifiers.

const Ajv = require('ajv');
const ajv = new Ajv({ allErrors: true, strict: false });

const ROUTE_SCHEMA = {
  type: 'object',
  required: ['alertId', 'severity', 'metricName', 'currentValue', 'campaignId'],
  properties: {
    alertId: { type: 'string', pattern: '^alert-[a-f0-9-]{36}$' },
    severity: { enum: ['low', 'medium', 'high', 'critical'] },
    metricName: { type: 'string' },
    currentValue: { type: 'number' },
    campaignId: { type: 'string' },
    timestamp: { type: 'string', format: 'date-time' }
  },
  additionalProperties: false
};

const validateRouteSchema = ajv.compile(ROUTE_SCHEMA);

const SEVERITY_MATRIX = {
  low: { action: 'pause', threshold: 80 },
  medium: { action: 'start', threshold: 90 },
  high: { action: 'start', threshold: 95 },
  critical: { action: 'start', threshold: 100 }
};

Step 2: Route Validation Logic

Before dispatching, you must verify that the alert actually crosses the configured threshold and that the target campaign exists in a routable state. Genesys Cloud campaigns must be in paused or inactive state before you can start them. You fetch the campaign metadata, check its status, and validate the metric value against the severity threshold.

const { OutboundApi } = require('@genesyscloud/platform-client-v2');
const outboundApi = new OutboundApi();

async function verifyCampaignStatus(campaignId) {
  try {
    const campaign = await outboundApi.getCampaign(campaignId);
    const routableStates = ['paused', 'inactive', 'draft'];
    if (!routableStates.includes(campaign.status)) {
      throw new Error(`Campaign ${campaignId} is in state ${campaign.status}. Cannot route.`);
    }
    return campaign;
  } catch (error) {
    if (error.code === 404) throw new Error(`Campaign ${campaignId} not found.`);
    throw error;
  }
}

function checkThresholdCrossing(currentValue, threshold) {
  return currentValue >= threshold;
}

Step 3: Atomic Dispatch, Deduplication & Webhook Sync

Routing failures often occur from duplicate triggers during event bus scaling. You implement a TTL-based deduplication map keyed by alertId. Once validated, you perform an atomic POST to the Outbound Campaign API. The SDK handles the HTTP request, but you must implement retry logic for 429 rate limits. After the Genesys call completes, you synchronize the routing event with an external telephony gateway via webhook.

const axios = require('axios');
const { v4: uuidv4 } = require('uuid');

const DEDUP_CACHE = new Map();
const DEDUP_TTL_MS = 300000; // 5 minutes

function isDuplicate(alertId) {
  const now = Date.now();
  if (DEDUP_CACHE.has(alertId)) {
    const entry = DEDUP_CACHE.get(alertId);
    if (now - entry.timestamp < DEDUP_TTL_MS) {
      DEDUP_CACHE.set(alertId, { timestamp: now });
      return true;
    }
  }
  DEDUP_CACHE.set(alertId, { timestamp: now });
  return false;
}

async function dispatchWithRetry(apiCallFn, maxRetries = 3) {
  let attempt = 0;
  while (attempt < maxRetries) {
    try {
      return await apiCallFn();
    } catch (error) {
      if (error.code === 429 && attempt < maxRetries - 1) {
        const retryAfter = error.response?.headers?.['retry-after'] 
          ? parseInt(error.response.headers['retry-after']) * 1000 
          : Math.pow(2, attempt) * 1000;
        console.warn(`Rate limited (429). Retrying in ${retryAfter}ms...`);
        await new Promise(resolve => setTimeout(resolve, retryAfter));
        attempt++;
      } else {
        throw error;
      }
    }
  }
}

async function syncTelephonyWebhook(routingPayload) {
  const webhookUrl = process.env.TELEPHONY_GATEWAY_WEBHOOK;
  if (!webhookUrl) return;

  await axios.post(webhookUrl, {
    routingId: uuidv4(),
    payload: routingPayload,
    syncedAt: new Date().toISOString()
  }, {
    headers: { 'Content-Type': 'application/json' },
    timeout: 5000
  });
}

Step 4: Metrics Tracking & Audit Logging

You track routing latency, dispatch success rates, and generate structured audit logs for event governance. These metrics help identify bottlenecks during EventBridge scaling and provide traceability for compliance reviews.

const METRICS = { total: 0, success: 0, failed: 0, latencySum: 0 };
const AUDIT_LOG = [];

function recordMetrics(durationMs, success) {
  METRICS.total++;
  METRICS.latencySum += durationMs;
  if (success) METRICS.success++;
  else METRICS.failed++;
}

function writeAuditLog(entry) {
  AUDIT_LOG.push({
    ...entry,
    recordedAt: new Date().toISOString(),
    metricsSnapshot: { ...METRICS }
  });
  console.log(JSON.stringify(entry));
}

Complete Working Example

The following Express module integrates all components into a single runnable service. It exposes a POST endpoint that accepts EventBridge alert payloads, validates them, routes them to Outbound Campaigns, synchronizes with external gateways, and tracks governance metrics.

require('dotenv').config();
const express = require('express');
const { PureCloudPlatformClientV2 } = require('@genesyscloud/platform-client-v2');
const { OutboundApi } = require('@genesyscloud/platform-client-v2');
const axios = require('axios');
const Ajv = require('ajv');
const { v4: uuidv4 } = require('uuid');

// Configuration
const app = express();
app.use(express.json({ limit: '1mb' }));

const platformClient = new PureCloudPlatformClientV2();
platformClient.setEnvironment(process.env.GC_ENVIRONMENT || 'mypurecloud.com');
const outboundApi = new OutboundApi();

const ajv = new Ajv({ allErrors: true });
const validateRouteSchema = ajv.compile({
  type: 'object',
  required: ['alertId', 'severity', 'metricName', 'currentValue', 'campaignId'],
  properties: {
    alertId: { type: 'string', pattern: '^alert-[a-f0-9-]{36}$' },
    severity: { enum: ['low', 'medium', 'high', 'critical'] },
    metricName: { type: 'string' },
    currentValue: { type: 'number' },
    campaignId: { type: 'string' },
    timestamp: { type: 'string', format: 'date-time' }
  },
  additionalProperties: false
});

const SEVERITY_MATRIX = {
  low: { action: 'pause', threshold: 80 },
  medium: { action: 'start', threshold: 90 },
  high: { action: 'start', threshold: 95 },
  critical: { action: 'start', threshold: 100 }
};

const DEDUP_CACHE = new Map();
const DEDUP_TTL_MS = 300000;
const METRICS = { total: 0, success: 0, failed: 0, latencySum: 0 };
const AUDIT_LOG = [];

// OAuth Initialization
async function initializeAuth() {
  await platformClient.loginClientCredentials({
    client_id: process.env.GC_CLIENT_ID,
    client_secret: process.env.GC_CLIENT_SECRET
  });
}

// Deduplication Logic
function isDuplicate(alertId) {
  const now = Date.now();
  if (DEDUP_CACHE.has(alertId)) {
    const entry = DEDUP_CACHE.get(alertId);
    if (now - entry.timestamp < DEDUP_TTL_MS) {
      DEDUP_CACHE.set(alertId, { timestamp: now });
      return true;
    }
  }
  DEDUP_CACHE.set(alertId, { timestamp: now });
  return false;
}

// Campaign Status Verification
async function verifyCampaignStatus(campaignId) {
  const campaign = await outboundApi.getCampaign(campaignId);
  const routableStates = ['paused', 'inactive', 'draft'];
  if (!routableStates.includes(campaign.status)) {
    throw new Error(`Campaign ${campaignId} is in state ${campaign.status}. Routing blocked.`);
  }
  return campaign;
}

// Threshold Crossing Check
function checkThresholdCrossing(currentValue, threshold) {
  return currentValue >= threshold;
}

// Retry Logic for 429 Rate Limits
async function dispatchWithRetry(apiCallFn, maxRetries = 3) {
  let attempt = 0;
  while (attempt < maxRetries) {
    try {
      return await apiCallFn();
    } catch (error) {
      if (error.code === 429 && attempt < maxRetries - 1) {
        const retryAfter = error.response?.headers?.['retry-after'] 
          ? parseInt(error.response.headers['retry-after']) * 1000 
          : Math.pow(2, attempt) * 1000;
        console.warn(`Rate limited (429). Retrying in ${retryAfter}ms...`);
        await new Promise(resolve => setTimeout(resolve, retryAfter));
        attempt++;
      } else {
        throw error;
      }
    }
  }
}

// External Webhook Sync
async function syncTelephonyWebhook(routingPayload) {
  const webhookUrl = process.env.TELEPHONY_GATEWAY_WEBHOOK;
  if (!webhookUrl) return;
  await axios.post(webhookUrl, {
    routingId: uuidv4(),
    payload: routingPayload,
    syncedAt: new Date().toISOString()
  }, { headers: { 'Content-Type': 'application/json' }, timeout: 5000 });
}

// Core Router Handler
async function processAlertEvent(req, res) {
  const startTime = Date.now();
  const event = req.body;

  // 1. Schema Validation
  const valid = validateRouteSchema(event);
  if (!valid) {
    writeAuditLog({ type: 'schema_failure', alertId: event.alertId, errors: validateRouteSchema.errors });
    return res.status(400).json({ error: 'Invalid route schema', details: validateRouteSchema.errors });
  }

  // 2. Deduplication
  if (isDuplicate(event.alertId)) {
    return res.status(200).json({ status: 'deduplicated', alertId: event.alertId });
  }

  try {
    // 3. Threshold & Severity Validation
    const matrix = SEVERITY_MATRIX[event.severity];
    if (!matrix || !checkThresholdCrossing(event.currentValue, matrix.threshold)) {
      return res.status(400).json({ error: 'Alert does not cross severity threshold' });
    }

    // 4. Campaign Status Verification
    const campaign = await verifyCampaignStatus(event.campaignId);

    // 5. Atomic Dispatch via SDK
    const apiCallFn = () => {
      if (matrix.action === 'start') {
        return outboundApi.startCampaign(event.campaignId);
      } else if (matrix.action === 'pause') {
        return outboundApi.pauseCampaign(event.campaignId);
      }
      throw new Error('Unsupported action');
    };

    await dispatchWithRetry(apiCallFn);

    // 6. Webhook Sync
    await syncTelephonyWebhook({
      alertId: event.alertId,
      campaignId: event.campaignId,
      action: matrix.action,
      triggeredAt: new Date().toISOString()
    });

    // 7. Metrics & Audit
    const duration = Date.now() - startTime;
    recordMetrics(duration, true);
    writeAuditLog({
      type: 'route_success',
      alertId: event.alertId,
      campaignId: event.campaignId,
      action: matrix.action,
      latencyMs: duration
    });

    return res.status(200).json({ status: 'routed', latencyMs: duration });
  } catch (error) {
    const duration = Date.now() - startTime;
    recordMetrics(duration, false);
    writeAuditLog({
      type: 'route_failure',
      alertId: event.alertId,
      error: error.message || error.code,
      latencyMs: duration
    });
    return res.status(500).json({ error: 'Routing failed', details: error.message });
  }
}

// Expose Router Endpoint
app.post('/api/alert-router', processAlertEvent);

// Health & Metrics Endpoint
app.get('/api/router/metrics', (req, res) => {
  res.json({
    metrics: METRICS,
    avgLatencyMs: METRICS.total > 0 ? METRICS.latencySum / METRICS.total : 0,
    successRate: METRICS.total > 0 ? (METRICS.success / METRICS.total) * 100 : 0,
    auditLogCount: AUDIT_LOG.length
  });
});

// Startup
async function start() {
  await initializeAuth();
  const PORT = process.env.PORT || 3000;
  app.listen(PORT, () => console.log(`Alert router listening on port ${PORT}`));
}

start().catch(console.error);

HTTP Request/Response Cycle Reference

The SDK abstracts the underlying HTTP call, but the actual request sent to Genesys Cloud follows this structure. Understanding the raw cycle helps when debugging proxy issues or firewall blocks.

Request:

POST /api/v2/outbound/campaigns/{campaignId}/start HTTP/1.1
Host: mycompany.mypurecloud.com
Authorization: Bearer eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9...
Content-Type: application/json
Accept: application/json

Response:

HTTP/1.1 200 OK
Content-Type: application/json
{
  "id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "name": "Proactive Outreach Campaign",
  "status": "active",
  "updatedTimestamp": "2024-05-15T14:32:00.000Z"
}

Common Errors & Debugging

Error: 401 Unauthorized

• Cause: The OAuth client credentials are expired, incorrect, or the SDK token cache was cleared.
• Fix: Verify GC_CLIENT_ID and GC_CLIENT_SECRET in your environment. Restart the service to trigger a fresh loginClientCredentials call. Check the Genesys Cloud admin console for client status.

Error: 403 Forbidden

• Cause: The OAuth token lacks the required scopes. The router requires outbound:campaign:write and outbound:campaign:read.
• Fix: Edit the OAuth client in Genesys Cloud Administration. Add the missing scopes. Revoke and reissue the client secret, then update your environment variables.

Error: 429 Too Many Requests

• Cause: EventBridge scaling events trigger rapid alert bursts, exceeding Genesys Cloud API rate limits.
• Fix: The dispatchWithRetry function implements exponential backoff. Ensure your event bus consumer implements rate limiting before hitting the router endpoint. Monitor the Retry-After header in 429 responses.

Error: 400 Bad Request (Campaign State)

• Cause: The target campaign is already active or archived. Genesys Cloud blocks start/pause actions on campaigns outside routable states.
• Fix: The verifyCampaignStatus function checks for paused, inactive, or draft. Route alerts to a campaign management API that transitions the state before triggering, or update your severity matrix to skip active campaigns.

Error: 500 Internal Server Error (Webhook Timeout)

• Cause: The external telephony gateway webhook did not respond within 5 seconds.
• Fix: Increase the timeout in the syncTelephonyWebhook function or implement an asynchronous message queue (SQS/SNS) to decouple webhook dispatch from the routing pipeline.

Official References

• Genesys Cloud Outbound Campaign API Documentation
• Genesys Cloud JavaScript SDK Reference
• Genesys Cloud OAuth 2.0 Client Credentials Flow
• Genesys Cloud Events & Alerts API