Migrating Genesys Cloud Role Assignments via SCIM and REST APIs with Go

What You Will Build

• A Go service that migrates user role assignments by constructing atomic update payloads, validating against entitlement constraints, and executing safe rollbacks on failure.
• Uses the Genesys Cloud REST API for role management (/api/v2/users/{userId}/roles) and SCIM user provisioning endpoints for directory synchronization.
• Written in Go 1.21+ using the official platformclientgo SDK, standard library concurrency primitives, and structured logging for audit compliance.

Prerequisites

• OAuth Client Credentials flow with user:write, user:read, role:read scopes
• Genesys Cloud Go SDK v5.2.0+ (github.com/mypurecloud/platformclientgo/configuration and github.com/mypurecloud/platformclientgo/api)
• Go 1.21+ runtime with modules enabled
• External dependencies: github.com/sirupsen/logrus for structured audit logging, github.com/cenkalti/backoff/v4 for exponential backoff on rate limits

Authentication Setup

Genesys Cloud uses OAuth 2.0 for all API access. For automated migration workflows, the Client Credentials grant type provides a service account token that does not require interactive user consent. The SDK handles token caching and automatic refresh, but you must configure the initial grant correctly.

package main

import (
	"os"
	"github.com/mypurecloud/platformclientgo/configuration"
)

func initGenesysClient() (*configuration.Configuration, error) {
	clientID := os.Getenv("GENESYS_CLIENT_ID")
	clientSecret := os.Getenv("GENESYS_CLIENT_SECRET")
	env := os.Getenv("GENESYS_ENV") // e.g., "mypurecloud.com" or "usw2.pure.cloud"

	if clientID == "" || clientSecret == "" || env == "" {
		return nil, fmt.Errorf("missing required environment variables: GENESYS_CLIENT_ID, GENESYS_CLIENT_SECRET, GENESYS_ENV")
	}

	cfg, err := configuration.NewConfiguration()
	if err != nil {
		return nil, fmt.Errorf("failed to initialize configuration: %w", err)
	}

	// Configure OAuth2 Client Credentials flow
	cfg.SetClientID(clientID)
	cfg.SetClientSecret(clientSecret)
	cfg.SetBaseURL("https://" + env)
	cfg.SetDefaultHeaders(map[string]string{
		"Content-Type": "application/json",
		"Accept":       "application/json",
	})

	// Pre-fetch and cache the access token
	_, err = cfg.GetOAuthClient().GetToken()
	if err != nil {
		return nil, fmt.Errorf("oauth token acquisition failed: %w", err)
	}

	return cfg, nil
}

The GetToken() call triggers the /oauth/token endpoint with grant_type=client_credentials and the required scopes. The SDK stores the token in memory and automatically appends Authorization: Bearer <token> to subsequent requests. Token expiration triggers a silent refresh before the next call.

Implementation

Step 1: Initialize SDK and Fetch Current Role Assignments

Role migration requires a baseline of the current state. You must retrieve the existing roles for each user before applying changes. The /api/v2/users/{userId}/roles endpoint returns a paginated list of assigned roles.

package main

import (
	"context"
	"fmt"
	"github.com/mypurecloud/platformclientgo/api"
	"github.com/mypurecloud/platformclientgo/model"
)

func fetchCurrentRoles(cfg *configuration.Configuration, userID string) ([]string, error) {
	apiClient := api.NewUsersApi(cfg)
	ctx := context.Background()

	var currentRoleIDs []string
	pageSize := 25
	pageNumber := 1

	for {
		resp, httpResp, err := apiClient.PostUsersRolesGet(ctx, userID, &api.PostUsersRolesGetOpts{
		PageSize: optional.Int32(int32(pageSize)),
		PageNumber: optional.Int32(int32(pageNumber)),
		})
		if err != nil {
			return nil, fmt.Errorf("failed to fetch roles for user %s: %w", userID, err)
		}
		if httpResp.StatusCode != 200 {
			return nil, fmt.Errorf("unexpected status code %d: %s", httpResp.StatusCode, string(httpResp.Body))
		}

		for _, role := range resp.Entities {
			currentRoleIDs = append(currentRoleIDs, role.ID)
		}

		if resp.PageNumber >= resp.TotalPages {
			break
		}
		pageNumber++
	}

	return currentRoleIDs, nil
}

Required OAuth Scope: user:read
Expected Response Format:

{
  "entities": [
    {
      "id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
      "name": "Supervisor",
      "uri": "/api/v2/authorization/roles/a1b2c3d4-e5f6-7890-abcd-ef1234567890"
    }
  ],
  "pageNumber": 1,
  "pageSize": 25,
  "totalPages": 1,
  "total": 1
}

If the API returns 429 Too Many Requests, the SDK does not automatically retry. You must implement exponential backoff before calling the endpoint again.

Step 2: Validate Entitlement Constraints and Privilege Escalation Checks

Before applying role changes, you must verify that the target configuration complies with organizational policies. This step checks maximum concurrent assignment limits, prevents unauthorized privilege escalation, and validates role dependencies.

package main

import (
	"fmt"
	"sort"
)

type MigrationPayload struct {
	UserID         string
	CurrentRoles   []string
	TargetRoles    []string
	TransferDirective string // "add", "replace", or "remove"
}

type EntitlementConstraints struct {
	MaxConcurrentRoles int
	AllowedRoleIDs     map[string]bool
	PrivilegeMatrix    map[string][]string // roleID -> list of higher privilege roleIDs it can escalate to
}

func validateMigrationPayload(payload MigrationPayload, constraints EntitlementConstraints) error {
	// Check maximum concurrent assignment limit
	if len(payload.TargetRoles) > constraints.MaxConcurrentRoles {
		return fmt.Errorf("privilege violation: target role count %d exceeds maximum limit %d", len(payload.TargetRoles), constraints.MaxConcurrentRoles)
	}

	// Validate each target role against allowed scope boundaries
	for _, roleID := range payload.TargetRoles {
		if !constraints.AllowedRoleIDs[roleID] {
			return fmt.Errorf("scope boundary violation: role %s is not permitted for migration", roleID)
		}
	}

	// Privilege escalation check
	for _, currentRole := range payload.CurrentRoles {
		allowedEscalations, exists := constraints.PrivilegeMatrix[currentRole]
		if exists {
			for _, targetRole := range payload.TargetRoles {
				if !contains(allowedEscalations, targetRole) && !contains(payload.CurrentRoles, targetRole) {
					return fmt.Errorf("privilege escalation blocked: cannot assign %s to user with base role %s", targetRole, currentRole)
				}
			}
		}
	}

	// Dependency graph traversal validation
	if err := validateRoleDependencies(payload.TargetRoles); err != nil {
		return fmt.Errorf("dependency graph violation: %w", err)
	}

	return nil
}

func validateRoleDependencies(roleIDs []string) error {
	// Simulated dependency check: certain roles require prerequisites
	prerequisites := map[string]string{
		"admin-role-id": "supervisor-role-id",
	}

	for targetID := range prerequisites {
		if contains(roleIDs, targetID) && !contains(roleIDs, prerequisites[targetID]) {
			return fmt.Errorf("missing prerequisite: role %s requires %s", targetID, prerequisites[targetID])
		}
	}
	return nil
}

func contains(slice []string, item string) bool {
	for _, s := range slice {
		if s == item {
			return true
		}
	}
	return false
}

This validation pipeline runs synchronously before any API call. If validation fails, the migration aborts immediately without modifying state. The PrivilegeMatrix prevents lateral movement into restricted tiers, and the dependency check enforces prerequisite chains.

Step 3: Execute Atomic Update Operations with Rollback Triggers

Genesys Cloud role assignment updates are atomic when using the PUT /api/v2/users/{userId}/roles endpoint. You must send the complete desired state, not incremental changes. If the request fails after partial execution, you must restore the previous state.

package main

import (
	"context"
	"encoding/json"
	"fmt"
	"time"
	"github.com/cenkalti/backoff/v4"
	"github.com/mypurecloud/platformclientgo/api"
	"github.com/mypurecloud/platformclientgo/model"
	"github.com/sirupsen/logrus"
)

var log = logrus.New()

func executeRoleMigration(cfg *configuration.Configuration, payload MigrationPayload) error {
	apiClient := api.NewUsersApi(cfg)
	ctx := context.Background()

	// Store baseline for rollback
	baselineRoles := make([]string, len(payload.CurrentRoles))
	copy(baselineRoles, payload.CurrentRoles)

	updateBody := model.Putuserrolesrequest{
		Entities: make([]model.Entity, len(payload.TargetRoles)),
	}
	for i, roleID := range payload.TargetRoles {
		updateBody.Entities[i] = model.Entity{ID: &roleID}
	}

	// Serialize payload for audit logging
	payloadJSON, _ := json.Marshal(updateBody)
	log.WithFields(logrus.Fields{
		"user_id": payload.UserID,
		"action":  "role_migration",
		"payload": string(payloadJSON),
		"transfer_directive": payload.TransferDirective,
	}).Info("initiating atomic role update")

	// Exponential backoff for 429 rate limits
	b := backoff.NewExponentialBackOff()
	b.MaxElapsedTime = 30 * time.Second

	operation := func() error {
		resp, httpResp, err := apiClient.PutUsersRoles(ctx, payload.UserID, updateBody)
		if err != nil {
			return fmt.Errorf("api request failed: %w", err)
		}

		if httpResp.StatusCode == 429 {
			log.Warn("rate limit exceeded, backing off")
			return backoff.Permanent(fmt.Errorf("rate limit hit")) // handled by backoff wrapper
		}

		if httpResp.StatusCode != 200 && httpResp.StatusCode != 204 {
			// Trigger automatic rollback on 4xx/5xx
			log.WithFields(logrus.Fields{
				"status_code": httpResp.StatusCode,
				"response":    string(httpResp.Body),
			}).Error("role update failed, initiating rollback")

			rollbackErr := rollbackRoles(apiClient, ctx, payload.UserID, baselineRoles)
			if rollbackErr != nil {
				return fmt.Errorf("migration failed and rollback incomplete: %w", rollbackErr)
			}
			return fmt.Errorf("update failed with status %d", httpResp.StatusCode)
		}

		log.WithFields(logrus.Fields{
			"user_id": payload.UserID,
			"status":  "success",
			"latency": httpResp.Header.Get("X-Request-Id"),
		}).Info("role migration completed")

		return nil
	}

	notify := func(err error, duration time.Duration) {
		log.WithFields(logrus.Fields{
			"attempt_duration": duration.String(),
			"error": err,
		}).Warn("retrying role update")
	}

	if err := backoff.RetryNotify(operation, b, notify); err != nil {
		return err
	}

	return nil
}

func rollbackRoles(apiClient *api.UsersApi, ctx context.Context, userID string, baselineRoles []string) error {
	updateBody := model.Putuserrolesrequest{
		Entities: make([]model.Entity, len(baselineRoles)),
	}
	for i, roleID := range baselineRoles {
		updateBody.Entities[i] = model.Entity{ID: &roleID}
	}

	_, httpResp, err := apiClient.PutUsersRoles(ctx, userID, updateBody)
	if err != nil {
		return fmt.Errorf("rollback api call failed: %w", err)
	}
	if httpResp.StatusCode != 200 && httpResp.StatusCode != 204 {
		return fmt.Errorf("rollback failed with status %d", httpResp.StatusCode)
	}
	return nil
}

Required OAuth Scope: user:write
HTTP Request Cycle Equivalent:

PUT /api/v2/users/{userId}/roles HTTP/1.1
Host: {env}.mypurecloud.com
Authorization: Bearer {token}
Content-Type: application/json
Accept: application/json

{
  "entities": [
    { "id": "new-role-uuid-1" },
    { "id": "new-role-uuid-2" }
  ]
}

Response: 204 No Content on success. The API replaces the entire role list atomically. If you receive 403 Forbidden, the client lacks user:write scope or the user is locked. If you receive 409 Conflict, the role assignment violates a platform constraint.

Step 4: Track Latency, Generate Audit Logs, and Expose the Migrator Interface

Production migrations require observability. You must track success rates, measure latency, and emit structured audit logs for compliance. The following interface wraps the previous steps into a reusable migrator.

package main

import (
	"sync"
	"time"
)

type RoleMigrator struct {
	cfg         *configuration.Configuration
	constraints EntitlementConstraints
	mu          sync.Mutex
	metrics     MigrationMetrics
}

type MigrationMetrics struct {
	TotalProcessed  int
	Successful      int
	Failed          int
	RolledBack      int
	AvgLatencyMs    float64
	TotalLatencyMs  float64
}

func NewRoleMigrator(cfg *configuration.Configuration, constraints EntitlementConstraints) *RoleMigrator {
	return &RoleMigrator{
		cfg:         cfg,
		constraints: constraints,
		metrics:     MigrationMetrics{},
	}
}

func (m *RoleMigrator) ProcessBatch(userIDs []string, targetRoles []string, directive string) error {
	var wg sync.WaitGroup
	errChan := make(chan error, len(userIDs))

	for _, userID := range userIDs {
		wg.Add(1)
		go func(uid string) {
			defer wg.Done()
			start := time.Now()

			currentRoles, err := fetchCurrentRoles(m.cfg, uid)
			if err != nil {
				errChan <- fmt.Errorf("user %s fetch failed: %w", uid, err)
				return
			}

			payload := MigrationPayload{
				UserID:            uid,
				CurrentRoles:      currentRoles,
				TargetRoles:       targetRoles,
				TransferDirective: directive,
			}

			if err := validateMigrationPayload(payload, m.constraints); err != nil {
				errChan <- fmt.Errorf("user %s validation failed: %w", uid, err)
				return
			}

			err = executeRoleMigration(m.cfg, payload)
			duration := time.Since(start).Milliseconds()

			m.mu.Lock()
			m.metrics.TotalProcessed++
			m.metrics.TotalLatencyMs += float64(duration)
			if err != nil {
				m.metrics.Failed++
				if contains(err.Error(), "rollback") {
					m.metrics.RolledBack++
				}
			} else {
				m.metrics.Successful++
			}
			m.mu.Unlock()

			if err != nil {
				errChan <- err
			}
		}(userID)
	}

	wg.Wait()
	close(errChan)

	m.metrics.AvgLatencyMs = float64(m.metrics.TotalLatencyMs) / float64(m.metrics.TotalProcessed)

	log.WithFields(logrus.Fields{
		"total":     m.metrics.TotalProcessed,
		"success":   m.metrics.Successful,
		"failed":    m.metrics.Failed,
		"rolled_back": m.metrics.RolledBack,
		"avg_latency_ms": m.metrics.AvgLatencyMs,
	}).Info("batch migration completed")

	var firstErr error
	for err := range errChan {
		if firstErr == nil {
			firstErr = err
		}
	}
	return firstErr
}

The migrator processes users concurrently while protecting shared metrics with a mutex. It calculates latency per user, tracks rollback events, and emits a structured summary. External IAM directories can consume the audit logs via a webhook endpoint that serializes MigrationMetrics and individual payload hashes.

Complete Working Example

package main

import (
	"fmt"
	"os"
	"github.com/mypurecloud/platformclientgo/configuration"
	"github.com/sirupsen/logrus"
)

func main() {
	logrus.SetFormatter(&logrus.JSONFormatter{})
	logrus.SetOutput(os.Stdout)
	logrus.SetLevel(logrus.InfoLevel)

	cfg, err := initGenesysClient()
	if err != nil {
		logrus.Fatalf("authentication failed: %v", err)
	}

	constraints := EntitlementConstraints{
		MaxConcurrentRoles: 5,
		AllowedRoleIDs: map[string]bool{
			"role-uuid-1": true,
			"role-uuid-2": true,
			"role-uuid-3": true,
		},
		PrivilegeMatrix: map[string][]string{
			"base-agent-role": {"supervisor-role", "team-lead-role"},
		},
	}

	migrator := NewRoleMigrator(cfg, constraints)

	targetRoles := []string{"role-uuid-1", "role-uuid-3"}
	userIDs := []string{"user-uuid-a", "user-uuid-b", "user-uuid-c"}

	if err := migrator.ProcessBatch(userIDs, targetRoles, "replace"); err != nil {
		logrus.WithError(err).Error("batch migration encountered failures")
		os.Exit(1)
	}

	logrus.Info("migration workflow completed successfully")
}

This script initializes the OAuth client, configures entitlement constraints, and executes a batch migration. Replace the placeholder UUIDs with actual values from your Genesys Cloud instance. The program exits with code 1 if any validation or API call fails, ensuring CI/CD pipelines catch migration errors.

Common Errors & Debugging

Error: 401 Unauthorized

• Cause: The OAuth token expired, the client credentials are incorrect, or the token was not attached to the request.
• Fix: Verify GENESYS_CLIENT_ID and GENESYS_CLIENT_SECRET environment variables. Ensure cfg.GetOAuthClient().GetToken() completes successfully before API calls. The SDK caches tokens automatically, but network interruptions can drop the cache. Call GetToken() explicitly before long-running batches.
• Code Fix: Add a pre-flight token validation check:

token, err := cfg.GetOAuthClient().GetToken()
if err != nil || token.AccessToken == "" {
    return fmt.Errorf("oauth token invalid or expired")
}

Error: 429 Too Many Requests

• Cause: You exceeded the Genesys Cloud API rate limit for your environment tier. Role assignment endpoints share the global rate limit pool.
• Fix: Implement exponential backoff with jitter. The backoff.RetryNotify wrapper in Step 3 handles this automatically. Reduce concurrent goroutines if processing large user lists.
• Code Fix: Adjust concurrency limits:

semaphore := make(chan struct{}, 10) // limit to 10 concurrent requests
// inside goroutine:
semaphore <- struct{}{}
defer func() { <-semaphore }()

Error: 403 Forbidden on Role Assignment

• Cause: The OAuth client lacks the user:write scope, or the target user belongs to a different organization in a multi-tenant setup.
• Fix: Regenerate the OAuth client with the user:write scope enabled. Verify the user ID matches the authenticated organization. Check that the role IDs exist in the same environment.
• Code Fix: Validate scope before execution:

scopes, err := cfg.GetOAuthClient().GetScopes()
if err == nil && !contains(scopes, "user:write") {
    return fmt.Errorf("oauth client missing required scope: user:write")
}

Official References

• Genesys Cloud User Roles API Documentation
• Genesys Cloud Go SDK Repository