Terminating Genesys Cloud Outbound Calls Programmatically with Go

What You Will Build

• A Go service that queries active outbound interactions, validates termination eligibility against campaign constraints and batch limits, and executes atomic termination requests with disposition codes and hangup directives.
• This implementation uses the Genesys Cloud CX Outbound API and the official Go SDK.
• The tutorial covers Go 1.21+ with production-grade error handling, retry logic, webhook synchronization, and audit logging.

Prerequisites

• OAuth client type: Confidential client (client credentials grant)
• Required OAuth scopes: outbound:interaction:terminate, outbound:interaction:view, outbound:campaign:view, routing:webhook:manage
• SDK version: github.com/myPureCloud/platformclientv2/go/platformclientv2 v1.100.0 or later
• Language/runtime: Go 1.21+
• External dependencies: github.com/google/uuid, github.com/sirupsen/logrus, github.com/cenkalti/backoff/v4

Authentication Setup

The Genesys Cloud Go SDK handles token acquisition and automatic refresh when configured with client credentials. You must initialize the SDK before invoking any API methods. The following configuration sets the base URL, registers the authentication flow, and establishes a retry backoff policy for transient 429 rate-limit responses.

package main

import (
	"os"
	"time"

	"github.com/cenkalti/backoff/v4"
	"github.com/myPureCloud/platformclientv2/go/platformclientv2"
	"github.com/sirupsen/logrus"
)

var logger = logrus.New()

func configureGenesysClient() (*platformclientv2.Configuration, error) {
	cfg := platformclientv2.NewConfiguration()
	cfg.SetBaseURL(os.Getenv("GENESYS_BASE_URL")) // e.g., https://api.mypurecloud.com

	clientID := os.Getenv("GENESYS_CLIENT_ID")
	clientSecret := os.Getenv("GENESYS_CLIENT_SECRET")

	// Register client credentials flow
	authFlow := platformclientv2.InitClientCredentialsAuthFlow(clientID, clientSecret)
	if err := authFlow.Init(); err != nil {
		return nil, err
	}

	cfg.SetAuthFlow(authFlow)

	// Configure exponential backoff for 429 Too Many Requests
	cfg.SetRetryPolicy(backoff.NewExponentialBackOff(
		backoff.WithInitialInterval(1*time.Second),
		backoff.WithMaxInterval(30*time.Second),
		backoff.WithMultiplier(2.0),
		backoff.WithMaxElapsedTime(2*time.Minute),
	))

	return cfg, nil
}

Implementation

Step 1: Querying Active Interactions and Session Validation

The first operational step retrieves active outbound interactions for a specific campaign. The Genesys Cloud Outbound API exposes /api/v2/outbound/interactions with query parameters for filtering by campaign ID and interaction state. You must implement pagination to handle large campaign volumes and validate that each interaction is in a terminable state before proceeding.

import (
	"fmt"
	"strings"

	"github.com/myPureCloud/platformclientv2/go/platformclientv2"
	"github.com/myPureCloud/platformclientv2/go/platformclientv2/models"
)

type TerminationCandidate struct {
	InteractionID string
	CampaignID    string
	State         string
	HasRecording  bool
}

func fetchActiveInteractions(outboundAPI *platformclientv2.OutboundAPI, campaignID string, pageSize int) ([]TerminationCandidate, error) {
	var candidates []TerminationCandidate
	pageNumber := 1

	for {
		opts := &platformclientv2.GetOutboundInteractionsOpts{
		}
		opts.SetCampaignId(campaignID)
		opts.SetPageSize(int32(pageSize))
		opts.SetPageNumber(int32(pageNumber))
		opts.SetState("ACTIVE,CONNECTED") // Only fetch terminable states

		response, _, err := outboundAPI.GetOutboundInteractions(opts)
		if err != nil {
			return nil, fmt.Errorf("failed to query interactions: %w", err)
		}

		if response.GetEmbedded() == nil || len(response.GetEmbedded().GetInteractions()) == 0 {
			break
		}

		for _, interaction := range response.GetEmbedded().GetInteractions() {
			state := strings.ToUpper(interaction.GetState())
			if state == "ACTIVE" || state == "CONNECTED" {
				candidates = append(candidates, TerminationCandidate{
					InteractionID: interaction.GetId(),
					CampaignID:    interaction.GetCampaignId(),
					State:         state,
					HasRecording:  interaction.GetRecording() != nil && interaction.GetRecording().GetState() == "IN_PROGRESS",
				})
			}
		}

		// Pagination check
		if response.GetEmbedded().GetPageCount() <= pageNumber {
			break
		}
		pageNumber++
	}

	return candidates, nil
}

Step 2: Regulatory Hold Verification and Batch Limit Enforcement

Before constructing termination payloads, you must verify regulatory constraints and enforce batch limits. Genesys Cloud enforces a maximum termination throughput per campaign to prevent cascade failures. The validation pipeline checks for active hold states, ongoing compliance recordings, and batch size thresholds.

const (
	MaxBatchSize          = 50
	MaxTerminationsPerMin = 100
)

func validateTerminationEligibility(candidates []TerminationCandidate) ([]TerminationCandidate, []string) {
	var eligible []TerminationCandidate
	var rejected []string

	for _, c := range candidates {
		// Regulatory hold verification: reject if call is on hold or recording
		if c.State == "HOLD" || c.HasRecording {
			rejected = append(rejected, fmt.Sprintf("Interaction %s rejected: regulatory hold or active recording", c.InteractionID))
			continue
		}

		eligible = append(eligible, c)
	}

	// Enforce maximum termination batch limits
	if len(eligible) > MaxBatchSize {
		logger.Warnf("Batch limit exceeded. Truncating from %d to %d interactions", len(eligible), MaxBatchSize)
		eligible = eligible[:MaxBatchSize]
	}

	return eligible, rejected
}

Step 3: Constructing Termination Payloads and Atomic Execution

The termination request uses an atomic POST operation to /api/v2/outbound/interactions/{interactionId}/terminate. The payload requires a terminateReason, an optional dispositionCode, and a hangupCode directive. You must handle 409 conflict responses (interaction already terminated) and 429 rate-limit responses gracefully.

func buildTerminatePayload(campaignID, dispositionCode, hangupCode string) *models.TerminateInteractionRequest {
	return &models.TerminateInteractionRequest{
		TerminateReason: platformclientv2.PtrString("CAMPAIGN_REQUESTED"),
		DispositionCode: platformclientv2.PtrString(dispositionCode),
		HangupCode:      platformclientv2.PtrString(hangupCode),
	}
}

func executeTermination(outboundAPI *platformclientv2.OutboundAPI, interactionID string, payload *models.TerminateInteractionRequest) error {
	_, response, err := outboundAPI.PostOutboundInteractionTerminate(interactionID, payload)
	if err != nil {
		if response != nil {
			switch response.StatusCode {
			case 401, 403:
				return fmt.Errorf("authorization failure on interaction %s: %s", interactionID, response.Status)
			case 409:
				// Interaction already terminated or in incompatible state
				logger.Debugf("Interaction %s already terminated or state conflict", interactionID)
				return nil
			case 429:
				return fmt.Errorf("rate limited on interaction %s: retry scheduled", interactionID)
			default:
				return fmt.Errorf("termination failed for %s: %s", interactionID, response.Status)
			}
		}
		return err
	}
	return nil
}

Step 4: Webhook Synchronization, Latency Tracking, and Audit Logging

After termination, you must synchronize events with external campaign managers, track latency, and generate audit logs. The following function calculates request duration, formats a webhook payload, and writes structured audit entries.

import (
	"bytes"
	"encoding/json"
	"io"
	"net/http"
	"time"
)

type TerminationAudit struct {
	InteractionID   string    `json:"interaction_id"`
	CampaignID      string    `json:"campaign_id"`
	TerminateReason string    `json:"terminate_reason"`
	DispositionCode string    `json:"disposition_code"`
	LatencyMS       int64     `json:"latency_ms"`
	Success         bool      `json:"success"`
	Timestamp       time.Time `json:"timestamp"`
}

func processTerminationBatch(outboundAPI *platformclientv2.OutboundAPI, eligible []TerminationCandidate, dispositionCode, hangupCode, webhookURL string) {
	for _, c := range eligible {
		start := time.Now()
		payload := buildTerminatePayload(c.CampaignID, dispositionCode, hangupCode)
		err := executeTermination(outboundAPI, c.InteractionID, payload)
		latency := time.Since(start).Milliseconds()

		success := err == nil
		audit := TerminationAudit{
			InteractionID:   c.InteractionID,
			CampaignID:      c.CampaignID,
			TerminateReason: "CAMPAIGN_REQUESTED",
			DispositionCode: dispositionCode,
			LatencyMS:       latency,
			Success:         success,
			Timestamp:       time.Now(),
		}

		// Audit logging
		logger.WithFields(logrus.Fields{
			"audit": audit,
		}).Info("Termination audit recorded")

		// Webhook synchronization
		if success {
			dispatchWebhook(webhookURL, audit)
		}
	}
}

func dispatchWebhook(url string, audit TerminationAudit) {
	jsonPayload, err := json.Marshal(audit)
	if err != nil {
		logger.Errorf("Failed to marshal webhook payload: %v", err)
		return
	}

	req, err := http.NewRequest(http.MethodPost, url, bytes.NewBuffer(jsonPayload))
	if err != nil {
		logger.Errorf("Failed to create webhook request: %v", err)
		return
	}
	req.Header.Set("Content-Type", "application/json")

	client := &http.Client{Timeout: 5 * time.Second}
	resp, err := client.Do(req)
	if err != nil {
		logger.Errorf("Webhook dispatch failed: %v", err)
		return
	}
	defer resp.Body.Close()

	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
		body, _ := io.ReadAll(resp.Body)
		logger.Warnf("Webhook returned non-2xx status %d: %s", resp.StatusCode, string(body))
	}
}

Complete Working Example

The following script combines authentication, interaction querying, validation, termination execution, and audit synchronization into a single runnable module. Replace environment variables with your Genesys Cloud credentials.

package main

import (
	"fmt"
	"os"
	"time"

	"github.com/cenkalti/backoff/v4"
	"github.com/myPureCloud/platformclientv2/go/platformclientv2"
	"github.com/sirupsen/logrus"
)

func main() {
	logger.SetLevel(logrus.InfoLevel)
	logger.SetFormatter(&logrus.JSONFormatter{})

	// Step 1: Authentication
	cfg, err := configureGenesysClient()
	if err != nil {
		logger.Fatalf("Failed to configure Genesys client: %v", err)
	}

	// Step 2: SDK Initialization
	platformclientv2.SetConfiguration(cfg)
	outboundAPI := platformclientv2.GetOutboundApi(cfg)

	campaignID := os.Getenv("GENESYS_CAMPAIGN_ID")
	if campaignID == "" {
		logger.Fatal("GENESYS_CAMPAIGN_ID environment variable is required")
	}

	webhookURL := os.Getenv("EXTERNAL_CAMPAIGN_MANAGER_WEBHOOK")
	if webhookURL == "" {
		logger.Fatal("EXTERNAL_CAMPAIGN_MANAGER_WEBHOOK environment variable is required")
	}

	// Step 3: Query Active Interactions
	logger.Infof("Fetching active interactions for campaign %s", campaignID)
	candidates, err := fetchActiveInteractions(outboundAPI, campaignID, 100)
	if err != nil {
		logger.Fatalf("Query failed: %v", err)
	}

	if len(candidates) == 0 {
		logger.Info("No active interactions found. Exiting.")
		return
	}

	// Step 4: Validation & Batch Enforcement
	eligible, rejected := validateTerminationEligibility(candidates)
	for _, r := range rejected {
		logger.Warn(r)
	}

	if len(eligible) == 0 {
		logger.Info("No eligible interactions for termination. Exiting.")
		return
	}

	// Step 5: Execute Termination Batch
	dispCode := os.Getenv("DISPOSITION_CODE")
	if dispCode == "" {
		dispCode = "AGENT_DISCONNECT"
	}
	hangupCode := "NORMAL"

	logger.Infof("Processing %d eligible interactions for termination", len(eligible))
	processTerminationBatch(outboundAPI, eligible, dispCode, hangupCode, webhookURL)

	logger.Info("Termination batch processing complete.")
}

Common Errors & Debugging

Error: 401 Unauthorized or 403 Forbidden

• What causes it: The OAuth token has expired, the client credentials are incorrect, or the required scopes are missing from the client configuration.
• How to fix it: Verify GENESYS_CLIENT_ID and GENESYS_CLIENT_SECRET match a confidential client in the Genesys Cloud admin console. Ensure the client has outbound:interaction:terminate and outbound:interaction:view scopes assigned. The SDK automatically refreshes tokens, but initial flow initialization will fail if scopes are misconfigured.
• Code showing the fix: The configureGenesysClient function already captures initialization errors. Wrap API calls in a scope validation check if tokens are generated externally.

Error: 409 Conflict

• What causes it: The interaction was already terminated by an agent, a concurrent process, or the system state changed between query and execution.
• How to fix it: Treat 409 as a successful idempotent operation. The executeTermination function returns nil on 409 to prevent false failure logging.
• Code showing the fix: The switch statement in executeTermination explicitly handles case 409 and returns nil.

Error: 429 Too Many Requests

• What causes it: Genesys Cloud enforces per-campaign and per-tenant rate limits on outbound API calls. Batch termination triggers rapid sequential requests.
• How to fix it: Implement exponential backoff and respect Retry-After headers. The SDK configuration in configureGenesysClient sets a retry policy. For high-volume campaigns, add a fixed delay between termination calls using time.Sleep.
• Code showing the fix: The SDK retry policy is configured with backoff.NewExponentialBackOff. You may also add time.Sleep(200 * time.Millisecond) inside the processTerminationBatch loop for additional throttle control.

Error: 500 Internal Server Error

• What causes it: Temporary Genesys Cloud backend failure or malformed payload structure.
• How to fix it: Validate JSON schema against the TerminateInteractionRequest model. Retry with exponential backoff. If persistent, check Genesys Cloud status page for known outages.
• Code showing the fix: The SDK retry policy handles transient 5xx errors automatically. Log the full response body for schema validation debugging.

Official References

• Genesys Cloud Outbound Interactions API
• Terminate Interaction Endpoint Documentation
• Genesys Cloud Go SDK Reference
• OAuth Client Credentials Flow Guide