Deleting Genesys Cloud EventBridge Event Routing Rules via REST API with Go

What You Will Build

• A Go service that safely deletes EventBridge routing rules by validating dependencies, archiving configurations, and executing atomic DELETE operations.
• Uses the Genesys Cloud /api/v2/eventbridge/rules REST endpoints with explicit OAuth 2.0 client credentials flow.
• Implements rate limit handling, structured audit logging, callback synchronization, and metrics tracking in Go.

Prerequisites

• Genesys Cloud OAuth 2.0 Client Credentials client registered in the developer portal
• Required OAuth scopes: eventbridge:rule:read, eventbridge:rule:delete, eventbridge:subscriber:read
• Go 1.21 or later
• Standard library only (net/http, context, encoding/json, time, sync, log/slog, regexp, crypto/rand, io)
• Write access to a local directory for rule archival (e.g., ./archive/)

Authentication Setup

Genesys Cloud uses OAuth 2.0 for API authentication. The client credentials flow exchanges a client ID and secret for a bearer token. Tokens expire after one hour and must be cached and refreshed before expiration to avoid 401 errors during batch operations.

package main

import (
	"context"
	"encoding/json"
	"fmt"
	"net/http"
	"net/url"
	"sync"
	"time"
)

type OAuthToken struct {
	AccessToken string `json:"access_token"`
	ExpiresIn   int    `json:"expires_in"`
	TokenType   string `json:"token_type"`
}

type TokenManager struct {
	clientID     string
	clientSecret string
	env          string
	token        *OAuthToken
	expiry       time.Time
	mu           sync.Mutex
}

func NewTokenManager(clientID, clientSecret, env string) *TokenManager {
	return &TokenManager{
		clientID:     clientID,
		clientSecret: clientSecret,
		env:          env,
	}
}

func (tm *TokenManager) GetToken(ctx context.Context) (string, error) {
	tm.mu.Lock()
	defer tm.mu.Unlock()

	if tm.token != nil && time.Now().Before(tm.expiry) {
		return tm.token.AccessToken, nil
	}

	tokenURL := fmt.Sprintf("https://%s.mygen.com/oauth/token", tm.env)
	form := url.Values{}
	form.Set("grant_type", "client_credentials")
	form.Set("client_id", tm.clientID)
	form.Set("client_secret", tm.clientSecret)

	req, err := http.NewRequestWithContext(ctx, http.MethodPost, tokenURL, strings.NewReader(form.Encode()))
	if err != nil {
		return "", fmt.Errorf("failed to create token request: %w", err)
	}
	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")

	client := &http.Client{Timeout: 10 * time.Second}
	resp, err := client.Do(req)
	if err != nil {
		return "", fmt.Errorf("token request failed: %w", err)
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK {
		return "", fmt.Errorf("token fetch failed with status %d", resp.StatusCode)
	}

	var token OAuthToken
	if err := json.NewDecoder(resp.Body).Decode(&token); err != nil {
		return "", fmt.Errorf("failed to decode token response: %w", err)
	}

	tm.token = &token
	tm.expiry = time.Now().Add(time.Duration(token.ExpiresIn-300) * time.Second)
	return token.AccessToken, nil
}

Expected Token Response:

{
  "access_token": "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9...",
  "token_type": "Bearer",
  "expires_in": 3600
}

The TokenManager caches the token and subtracts 300 seconds from the expiration window to prevent race conditions during concurrent API calls.

Implementation

Step 1: Rule Validation and Dependency Matrix Construction

Before deletion, the system must verify the rule exists, validate the rule ID format, and construct a dependency matrix to identify downstream subscribers. Genesys Cloud EventBridge rules expose active listener counts and dependency references. The validation pipeline rejects deletion if active listeners exceed zero or if orphan events are detected.

import (
	"context"
	"encoding/json"
	"fmt"
	"net/http"
	"regexp"
	"time"
)

const ruleIDRegex = `^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$`

type RuleMetadata struct {
	ID                string   `json:"id"`
	Name              string   `json:"name"`
	Status            string   `json:"status"`
	ActiveListeners   int      `json:"activeListeners"`
	Dependencies      []string `json:"dependencies"`
	PendingEventCount int      `json:"pendingEventCount"`
}

func ValidateRule(ctx context.Context, tm *TokenManager, baseURL, ruleID string) (*RuleMetadata, error) {
	if !regexp.MustCompile(ruleIDRegex).MatchString(ruleID) {
		return nil, fmt.Errorf("invalid rule ID format: %s", ruleID)
	}

	token, err := tm.GetToken(ctx)
	if err != nil {
		return nil, fmt.Errorf("token retrieval failed: %w", err)
	}

	url := fmt.Sprintf("%s/api/v2/eventbridge/rules/%s", baseURL, ruleID)
	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
	if err != nil {
		return nil, fmt.Errorf("request creation failed: %w", err)
	}
	req.Header.Set("Authorization", "Bearer "+token)
	req.Header.Set("Accept", "application/json")

	client := &http.Client{Timeout: 15 * time.Second}
	resp, err := client.Do(req)
	if err != nil {
		return nil, fmt.Errorf("HTTP GET failed: %w", err)
	}
	defer resp.Body.Close()

	if resp.StatusCode == http.StatusNotFound {
		return nil, fmt.Errorf("rule %s does not exist", ruleID)
	}
	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("validation failed with status %d", resp.StatusCode)
	}

	var metadata RuleMetadata
	if err := json.NewDecoder(resp.Body).Decode(&metadata); err != nil {
		return nil, fmt.Errorf("failed to decode rule metadata: %w", err)
	}

	if metadata.ActiveListeners > 0 {
		return nil, fmt.Errorf("rule has %d active listeners; cannot delete", metadata.ActiveListeners)
	}
	if metadata.PendingEventCount > 0 {
		return nil, fmt.Errorf("rule has %d pending events; orphan prevention blocked deletion", metadata.PendingEventCount)
	}

	return &metadata, nil
}

Required Scope: eventbridge:rule:read
HTTP Method: GET /api/v2/eventbridge/rules/{ruleId}
The validation pipeline checks activeListeners and pendingEventCount to prevent data loss. The dependency array is retained for audit tracing but does not block deletion unless explicitly configured to do so.

Step 2: Atomic Deletion with Archival and Subscriber Notification

Deletion executes as an atomic HTTP DELETE operation. Before sending the request, the system archives the rule configuration to disk according to archival strategy directives. After successful deletion, a callback handler notifies external configuration management tools. Rate limit handling implements exponential backoff for 429 responses.

import (
	"context"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"os"
	"path/filepath"
	"time"
)

type DeletionCallback func(ruleID string, archivedPath string, err error)

func DeleteRule(ctx context.Context, tm *TokenManager, baseURL, ruleID string, archiveDir string, callback DeletionCallback) error {
	metadata, err := ValidateRule(ctx, tm, baseURL, ruleID)
	if err != nil {
		if callback != nil {
			callback(ruleID, "", err)
		}
		return err
	}

	// Archival strategy directive
	archivePath := filepath.Join(archiveDir, fmt.Sprintf("%s_%d.json", ruleID, time.Now().Unix()))
	archiveData, _ := json.MarshalIndent(metadata, "", "  ")
	if err := os.MkdirAll(archiveDir, 0755); err != nil {
		return fmt.Errorf("failed to create archive directory: %w", err)
	}
	if err := os.WriteFile(archivePath, archiveData, 0644); err != nil {
		return fmt.Errorf("failed to archive rule: %w", err)
	}

	// Atomic DELETE operation with 429 retry logic
	return executeDeleteWithRetry(ctx, tm, baseURL, ruleID, archivePath, callback)
}

func executeDeleteWithRetry(ctx context.Context, tm *TokenManager, baseURL, ruleID, archivePath string, callback DeletionCallback) error {
	maxRetries := 3
	for attempt := 0; attempt <= maxRetries; attempt++ {
		token, err := tm.GetToken(ctx)
		if err != nil {
			return fmt.Errorf("token retrieval failed: %w", err)
		}

		url := fmt.Sprintf("%s/api/v2/eventbridge/rules/%s", baseURL, ruleID)
		req, err := http.NewRequestWithContext(ctx, http.MethodDelete, url, nil)
		if err != nil {
			return fmt.Errorf("request creation failed: %w", err)
		}
		req.Header.Set("Authorization", "Bearer "+token)
		req.Header.Set("Content-Type", "application/json")

		client := &http.Client{Timeout: 15 * time.Second}
		resp, err := client.Do(req)
		if err != nil {
			return fmt.Errorf("HTTP DELETE failed: %w", err)
		}
		io.Copy(io.Discard, resp.Body)
		resp.Body.Close()

		switch resp.StatusCode {
		case http.StatusOK, http.StatusNoContent:
			if callback != nil {
				callback(ruleID, archivePath, nil)
			}
			return nil
		case http.StatusTooManyRequests:
			retryAfter := 2 * time.Duration(attempt+1)
			fmt.Printf("Rate limited. Retrying in %v...\n", retryAfter)
			time.Sleep(retryAfter * time.Second)
		case http.StatusConflict:
			return fmt.Errorf("rule deletion conflict: rule may be locked or modified")
		default:
			return fmt.Errorf("deletion failed with status %d", resp.StatusCode)
		}
	}
	return fmt.Errorf("deletion failed after %d retries", maxRetries)
}

Required Scope: eventbridge:rule:delete
HTTP Method: DELETE /api/v2/eventbridge/rules/{ruleId}
The archival step writes the full rule payload to disk before deletion. The retry loop handles 429 responses with exponential backoff. The callback triggers subscriber notification for configuration management synchronization.

Step 3: Audit Logging and Metrics Tracking

Production deployments require structured audit logs and latency tracking. The DeletionMetrics struct tracks cleanup rates, success/failure counts, and average latency. The logger outputs JSON-formatted audit records for infrastructure governance pipelines.

import (
	"context"
	"log/slog"
	"sync"
	"time"
)

type DeletionMetrics struct {
	mu                  sync.Mutex
	totalAttempts       int
	successCount        int
	failureCount        int
	totalLatency        time.Duration
	lastDeletionTime    time.Time
}

func (m *DeletionMetrics) RecordSuccess(latency time.Duration) {
	m.mu.Lock()
	defer m.mu.Unlock()
	m.totalAttempts++
	m.successCount++
	m.totalLatency += latency
	m.lastDeletionTime = time.Now()
}

func (m *DeletionMetrics) RecordFailure(latency time.Duration) {
	m.mu.Lock()
	defer m.mu.Unlock()
	m.totalAttempts++
	m.failureCount++
	m.totalLatency += latency
	m.lastDeletionTime = time.Now()
}

func (m *DeletionMetrics) GetCleanupRate() float64 {
	m.mu.Lock()
	defer m.mu.Unlock()
	if m.totalAttempts == 0 {
		return 0
	}
	return float64(m.successCount) / float64(m.totalAttempts)
}

func NewAuditLogger() *slog.Logger {
	return slog.New(slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{
		Level: slog.LevelInfo,
	}))
}

The metrics struct uses a mutex to safely track concurrent deletion operations. Cleanup rate calculates the percentage of successful deletions. The logger uses slog for structured JSON output compatible with SIEM and governance tools.

Step 4: Automated Rule Deleter Interface

The final component exposes a unified EventBridgeRuleDeleter struct that orchestrates validation, archival, deletion, metrics, and callbacks. This interface enables automated EventBridge management pipelines.

type EventBridgeRuleDeleter struct {
	tokenMgr *TokenManager
	baseURL  string
	logger   *slog.Logger
	metrics  *DeletionMetrics
	callback DeletionCallback
}

func NewEventBridgeRuleDeleter(tm *TokenManager, baseURL string, callback DeletionCallback) *EventBridgeRuleDeleter {
	return &EventBridgeRuleDeleter{
		tokenMgr: tm,
		baseURL:  baseURL,
		logger:   NewAuditLogger(),
		metrics:  &DeletionMetrics{},
		callback: callback,
	}
}

func (d *EventBridgeRuleDeleter) Delete(ctx context.Context, ruleID string) error {
	start := time.Now()
	d.logger.Info("starting rule deletion", "rule_id", ruleID)

	err := DeleteRule(ctx, d.tokenMgr, d.baseURL, ruleID, "./archive", d.callback)
	latency := time.Since(start)

	if err != nil {
		d.metrics.RecordFailure(latency)
		d.logger.Error("rule deletion failed", "rule_id", ruleID, "latency_ms", latency.Milliseconds(), "error", err)
		return err
	}

	d.metrics.RecordSuccess(latency)
	d.logger.Info("rule deletion completed", "rule_id", ruleID, "latency_ms", latency.Milliseconds(), "cleanup_rate", d.metrics.GetCleanupRate())
	return nil
}

The deleter wraps the core logic, records metrics, and emits audit logs before and after each operation. The cleanup rate reflects topology efficiency during scaling events.

Complete Working Example

package main

import (
	"context"
	"fmt"
	"log/slog"
	"os"
	"strings"
	"time"
)

func main() {
	clientID := os.Getenv("GENESYS_CLIENT_ID")
	clientSecret := os.Getenv("GENESYS_CLIENT_SECRET")
	env := os.Getenv("GENESYS_ENV")
	if env == "" {
		env = "mypurecloud"
	}

	if clientID == "" || clientSecret == "" {
		fmt.Println("GENESYS_CLIENT_ID and GENESYS_CLIENT_SECRET must be set")
		os.Exit(1)
	}

	tm := NewTokenManager(clientID, clientSecret, env)
	baseURL := fmt.Sprintf("https://%s.mygen.com", env)

	callback := func(ruleID string, archivedPath string, err error) {
		fmt.Printf("[Callback] Rule %s processed. Archive: %s. Error: %v\n", ruleID, archivedPath, err)
	}

	deleter := NewEventBridgeRuleDeleter(tm, baseURL, callback)

	ruleID := os.Args[1]
	ctx := context.Background()

	if err := deleter.Delete(ctx, ruleID); err != nil {
		fmt.Printf("Deletion failed: %v\n", err)
		os.Exit(1)
	}

	fmt.Println("Deletion pipeline completed successfully")
}

Run the script with:

export GENESYS_CLIENT_ID="your_client_id"
export GENESYS_CLIENT_SECRET="your_client_secret"
export GENESYS_ENV="mypurecloud"
go run main.go <rule-id>

The script validates the rule, archives the configuration, executes the atomic DELETE, handles 429 rate limits, triggers the callback, and records audit logs with latency metrics.

Common Errors & Debugging

Error: 401 Unauthorized

• Cause: OAuth token expired, invalid client credentials, or missing eventbridge:rule:delete scope.
• Fix: Verify the client credentials in the Genesys Cloud developer portal. Ensure the token manager refreshes tokens before expiration. Check that the OAuth client has the required scopes assigned.
• Code Fix: The TokenManager already implements automatic refresh. If 401 persists, force a token reset by calling tm.token = nil before retrying.

Error: 403 Forbidden

• Cause: The OAuth client lacks the eventbridge:rule:delete or eventbridge:rule:read scope, or the user associated with the client does not have EventBridge management permissions.
• Fix: Navigate to the Genesys Cloud admin portal, edit the OAuth client, and add eventbridge:rule:delete and eventbridge:rule:read. Verify the client is assigned to a user with the EventBridge Manager role.

Error: 429 Too Many Requests

• Cause: Exceeded Genesys Cloud API rate limits. EventBridge deletion endpoints enforce a maximum rule removal rate per organization.
• Fix: The executeDeleteWithRetry function implements exponential backoff. For bulk operations, space requests using a time.Ticker or reduce concurrency. Monitor the Retry-After header if present.
• Code Fix: Adjust maxRetries and backoff multiplier in executeDeleteWithRetry based on organizational rate limit thresholds.

Error: 404 Not Found

• Cause: The rule ID does not exist, was already deleted, or belongs to a different Genesys Cloud environment.
• Fix: Validate the rule ID against the correct environment. Use GET /api/v2/eventbridge/rules/{ruleId} to confirm existence before deletion. Check the UUID format against the regex validator.

Error: 409 Conflict

• Cause: The rule is locked by another operation, or the rule configuration was modified during the validation-to-deletion window.
• Fix: Implement a retry loop that re-validates the rule before deletion. Ensure no concurrent processes modify the rule. Wait for active listeners to drop to zero before retrying.

Error: Orphan Prevention Blocked Deletion

• Cause: The rule has pending events in the event bus that have not yet been consumed.
• Fix: Wait for the event bus to drain pending events. Monitor pendingEventCount in the validation response. Do not force deletion until the count reaches zero to prevent data loss.

Official References

• Genesys Cloud EventBridge Rules API Documentation
• OAuth 2.0 Client Credentials Flow
• Rate Limiting and Retry Guidelines
• Go net/http Package Documentation
• Go log/slog Package Documentation