Retrieving Genesys Cloud Voice Recording Transcriptions via API with Go

What You Will Build

• A Go service that submits asynchronous transcription jobs for voice recordings, polls for completion with exponential backoff, parses diarized timestamps, dispatches webhooks, tracks latency and word error rates, and writes compliance audit logs.
• The implementation uses the Genesys Cloud Platform API v2 (/api/v2/recordings/transcripts) and the official Go SDK.
• The tutorial covers Go 1.21+ with production-grade error handling, retry logic, and structured data pipelines.

Prerequisites

• OAuth client credentials (confidential client) with the following scopes: recordings:download, transcription:read, transcription:write
• Genesys Cloud Go SDK version v1.x (github.com/mygenesys/genesyscloud)
• Go runtime version 1.21 or higher
• External dependencies: github.com/mygenesys/genesyscloud, github.com/mygenesys/genesyscloud/api, github.com/mygenesys/genesyscloud/auth, time, context, encoding/json, fmt, log, math, net/http, os, sync

Authentication Setup

Genesys Cloud uses OAuth 2.0 for API authentication. The confidential client flow requires exchanging client credentials for an access token. The official Go SDK handles token caching and automatic refresh when configured correctly.

package main

import (
	"context"
	"log"
	"os"

	"github.com/mygenesys/genesyscloud/auth"
	"github.com/mygenesys/genesyscloud/api"
)

func initClient(ctx context.Context) (*api.APIClient, error) {
	clientID := os.Getenv("GENESYS_CLIENT_ID")
	clientSecret := os.Getenv("GENESYS_CLIENT_SECRET")
	env := os.Getenv("GENESYS_ENV") // e.g., "us-east-1.mygen.com"

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

	// Configure OAuth2 client credentials flow
	cfg := auth.NewConfiguration()
	cfg.OAuthConfig.ClientId = clientID
	cfg.OAuthConfig.ClientSecret = clientSecret
	cfg.OAuthConfig.Environment = env
	cfg.OAuthConfig.Scopes = []string{"recordings:download", "transcription:read", "transcription:write"}

	// Create auth provider with automatic token refresh
	authProvider, err := auth.NewAuthProvider(cfg)
	if err != nil {
		return nil, fmt.Errorf("failed to initialize auth provider: %w", err)
	}

	// Initialize API client with cached token storage
	client := api.NewAPIClient(api.NewConfiguration())
	client.SetAuthProvider(authProvider)

	return client, nil
}

The auth.NewAuthProvider constructor establishes the token endpoint, caches the response, and refreshes automatically before expiration. The scopes transcription:read and transcription:write are mandatory for submitting jobs and retrieving results. The recordings:download scope validates that the caller has permission to access the source media.

Implementation

Step 1: Construct and Validate Transcription Request Payload

The transcription service accepts a POST request to /api/v2/recordings/transcripts. The payload must specify the recording identifier, language model, formatting directives, and optional webhook URL. Validation occurs before submission to reject malformed requests early.

package main

import (
	"fmt"
	"net/url"
	"regexp"
)

type TranscriptionRequest struct {
	RecordingID       string `json:"recordingId"`
	Language          string `json:"language"`
	Format            string `json:"format"`
	SpeakerDiarization bool  `json:"speakerDiarization"`
	WordConfidence    bool  `json:"wordConfidence"`
	Timestamps        bool  `json:"timestamps"`
	WebhookURL        string `json:"webhook,omitempty"`
}

var validLanguages = map[string]bool{
	"en-US": true, "en-GB": true, "es-ES": true, "fr-FR": true, "de-DE": true,
}

var validFormats = map[string]bool{
	"text": true, "srt": true, "vtt": true, "json": true,
}

func ValidateRequest(req TranscriptionRequest) error {
	if req.RecordingID == "" {
		return fmt.Errorf("recordingId is required")
	}
	if !validLanguages[req.Language] {
		return fmt.Errorf("unsupported language model: %s", req.Language)
	}
	if !validFormats[req.Format] {
		return fmt.Errorf("unsupported format: %s", req.Format)
	}
	if req.WebhookURL != "" {
		_, err := url.ParseRequestURI(req.WebhookURL)
		if err != nil {
			return fmt.Errorf("invalid webhook URL: %w", err)
		}
		if !regexp.MustCompile(`^https?://`).MatchString(req.WebhookURL) {
			return fmt.Errorf("webhook URL must use http or https scheme")
		}
	}
	return nil
}

The validation function rejects unsupported language models and formats before network transmission. The webhook URL undergoes scheme validation to prevent internal redirect attacks. The omitempty tag ensures the webhook field omits from JSON when empty, which matches the API specification.

Step 2: Submit Job and Handle Asynchronous Polling with Retry Logic

Transcription jobs run asynchronously. The service returns a transcriptId and initial status (queued). You must poll GET /api/v2/recordings/transcripts/{id} until the status reaches completed or failed. The implementation includes exponential backoff for 429 rate limits and transient 5xx errors.

package main

import (
	"context"
	"fmt"
	"math"
	"net/http"
	"time"

	"github.com/mygenesys/genesyscloud/api"
)

const (
	maxRetries     = 5
	baseDelay      = 2 * time.Second
	maxDelay       = 30 * time.Second
	pollInterval   = 5 * time.Second
)

type TranscriptionJob struct {
	ID     string `json:"id"`
	Status string `json:"status"`
}

func submitTranscription(ctx context.Context, client *api.APIClient, req TranscriptionRequest) (*TranscriptionJob, error) {
	payload, err := json.Marshal(req)
	if err != nil {
		return nil, fmt.Errorf("failed to marshal request: %w", err)
	}

	var job TranscriptionJob
	err = retryOnTransient(ctx, func() error {
		resp, err := client.RecordingsAPI.PostRecordingsTranscripts(ctx).Body(payload).Execute()
		if err != nil {
			if resp != nil && (resp.StatusCode == http.StatusTooManyRequests || resp.StatusCode >= 500) {
				return fmt.Errorf("transient error: %d", resp.StatusCode)
			}
			return fmt.Errorf("submission failed: %w", err)
		}
		job.ID = resp.GetId()
		job.Status = resp.GetStatus()
		return nil
	})
	if err != nil {
		return nil, err
	}
	return &job, nil
}

func pollTranscription(ctx context.Context, client *api.APIClient, jobID string) (*api.TranscriptResult, error) {
	var result *api.TranscriptResult
	for {
		select {
		case <-ctx.Done():
			return nil, ctx.Err()
		default:
		}

		var response *api.TranscriptResult
		var err error
		err = retryOnTransient(ctx, func() error {
			resp, apiErr := client.RecordingsAPI.GetRecordingsTranscriptsId(ctx, jobID).Execute()
			if apiErr != nil {
				if resp != nil && (resp.StatusCode == http.StatusTooManyRequests || resp.StatusCode >= 500) {
					return fmt.Errorf("transient error: %d", resp.StatusCode)
				}
				return apiErr
			}
			response = resp
			return nil
		})
		if err != nil {
			return nil, fmt.Errorf("polling failed: %w", err)
		}

		status := response.GetStatus()
		if status == "completed" {
			result = response
			break
		}
		if status == "failed" {
			return nil, fmt.Errorf("transcription job failed: %s", response.GetError())
		}

		time.Sleep(pollInterval)
	}
	return result, nil
}

func retryOnTransient(ctx context.Context, fn func() error) error {
	var lastErr error
	for i := 0; i < maxRetries; i++ {
		lastErr = fn()
		if lastErr == nil {
			return nil
		}
		delay := time.Duration(math.Pow(2, float64(i))) * baseDelay
		if delay > maxDelay {
			delay = maxDelay
		}
		select {
		case <-ctx.Done():
			return ctx.Err()
		case <-time.After(delay):
		}
	}
	return fmt.Errorf("exceeded max retries: %w", lastErr)
}

The retryOnTransient function implements exponential backoff with jitter-free delays. It catches 429 and 5xx responses, treats them as retryable, and aborts on context cancellation. The polling loop checks the job status every five seconds and returns immediately upon completion or failure.

Step 3: Parse Diarization and Timestamp Alignment Pipeline

Raw transcript output contains a flat list of words with confidence scores, start/end timestamps, and speaker labels. The parsing pipeline groups words by speaker, aligns timestamps to seconds, and calculates word error rate proxies from confidence values.

package main

import (
	"encoding/json"
	"fmt"
	"math"
	"time"
)

type WordToken struct {
	Text           string  `json:"text"`
	Confidence     float64 `json:"confidence"`
	StartTimestamp string  `json:"startTimestamp"`
	EndTimestamp   string  `json:"endTimestamp"`
	Speaker        string  `json:"speaker"`
}

type SpeakerSegment struct {
	SpeakerID string    `json:"speaker_id"`
	Text      string    `json:"text"`
	StartTime time.Time `json:"start_time"`
	EndTime   time.Time `json:"end_time"`
	AvgConf   float64   `json:"avg_confidence"`
}

type ProcessingMetrics struct {
	LatencySeconds float64 `json:"latency_seconds"`
	WordErrorRate  float64 `json:"word_error_rate"`
	TotalWords     int     `json:"total_words"`
}

func parseTranscriptResult(result *api.TranscriptResult, submissionTime time.Time) ([]SpeakerSegment, ProcessingMetrics, error) {
	rawResult := result.GetResult()
	if rawResult == nil {
		return nil, ProcessingMetrics{}, fmt.Errorf("empty transcription result")
	}

	var words []WordToken
	wordBytes, err := json.Marshal(rawResult.GetWords())
	if err != nil {
		return nil, ProcessingMetrics{}, fmt.Errorf("failed to marshal words: %w", err)
	}
	if err := json.Unmarshal(wordBytes, &words); err != nil {
		return nil, ProcessingMetrics{}, fmt.Errorf("failed to unmarshal words: %w", err)
	}

	segments := make(map[string]*SpeakerSegment)
	var totalConfidence float64
	var validConfidences int

	for _, w := range words {
		start, err := time.Parse(time.RFC3339, w.StartTimestamp)
		if err != nil {
			return nil, ProcessingMetrics{}, fmt.Errorf("invalid start timestamp: %w", err)
		}
		end, err := time.Parse(time.RFC3339, w.EndTimestamp)
		if err != nil {
			return nil, ProcessingMetrics{}, fmt.Errorf("invalid end timestamp: %w", err)
		}

		seg, exists := segments[w.Speaker]
		if !exists {
			seg = &SpeakerSegment{SpeakerID: w.Speaker, StartTime: start, AvgConf: 0}
			segments[w.Speaker] = seg
		}
		seg.Text += " " + w.Text
		if end.After(seg.EndTime) {
			seg.EndTime = end
		}
		totalConfidence += w.Confidence
		validConfidences++
	}

	var speakerList []SpeakerSegment
	for _, seg := range segments {
		seg.AvgConf = totalConfidence / float64(validConfidences)
		speakerList = append(speakerList, *seg)
	}

	latency := time.Since(submissionTime).Seconds()
	wer := 1.0 - (totalConfidence / float64(validConfidences))
	metrics := ProcessingMetrics{
		LatencySeconds: math.Round(latency*100) / 100,
		WordErrorRate:  math.Round(wer*10000) / 10000,
		TotalWords:     len(words),
	}

	return speakerList, metrics, nil
}

The parser reconstructs speaker turns by merging consecutive words with matching speaker identifiers. Timestamp alignment uses RFC3339 parsing to establish segment boundaries. The word error rate metric derives from average word confidence, which correlates inversely with transcription errors in Genesys Cloud ASR models.

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

The pipeline dispatches completion status to external analytics platforms, calculates processing metrics, and writes structured audit logs for compliance verification. The audit log includes request parameters, job identifiers, metrics, and timestamps.

package main

import (
	"encoding/json"
	"fmt"
	"log"
	"net/http"
	"os"
	"time"
)

type AuditLog struct {
	Timestamp     time.Time          `json:"timestamp"`
	RecordingID   string             `json:"recording_id"`
	TranscriptID  string             `json:"transcript_id"`
	Status        string             `json:"status"`
	Metrics       ProcessingMetrics  `json:"metrics"`
	WebhookStatus string             `json:"webhook_status"`
}

func dispatchWebhook(url string, payload map[string]interface{}) error {
	body, err := json.Marshal(payload)
	if err != nil {
		return fmt.Errorf("webhook payload marshal failed: %w", err)
	}

	req, err := http.NewRequest(http.MethodPost, url, nil)
	if err != nil {
		return fmt.Errorf("webhook request creation failed: %w", err)
	}
	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("X-Transcript-Id", payload["transcript_id"].(string))

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

	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
		return fmt.Errorf("webhook returned non-2xx status: %d", resp.StatusCode)
	}
	return nil
}

func writeAuditLog(log AuditLog) error {
	file, err := os.OpenFile("transcription_audit.jsonl", os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
	if err != nil {
		return fmt.Errorf("failed to open audit log: %w", err)
	}
	defer file.Close()

	encoder := json.NewEncoder(file)
	encoder.SetIndent("", "  ")
	return encoder.Encode(log)
}

func syncExternalAnalytics(webhookURL string, transcriptID string, metrics ProcessingMetrics, speakers []SpeakerSegment) error {
	if webhookURL == "" {
		return nil
	}

	payload := map[string]interface{}{
		"transcript_id": transcriptID,
		"status":        "completed",
		"metrics":       metrics,
		"speakers":      speakers,
		"processed_at":  time.Now().UTC().Format(time.RFC3339),
	}

	return dispatchWebhook(webhookURL, payload)
}

The webhook dispatcher enforces a 10-second timeout and validates HTTP 2xx responses. The audit log appends JSON lines to a file for compliance tracking. The synchronization function packages metrics and parsed speakers for downstream quality assurance systems.

Complete Working Example

The following module combines all components into a single executable service. Replace environment variables with your Genesys Cloud credentials before execution.

package main

import (
	"context"
	"encoding/json"
	"fmt"
	"log"
	"os"
	"time"

	"github.com/mygenesys/genesyscloud/api"
)

func main() {
	ctx := context.Background()
	client, err := initClient(ctx)
	if err != nil {
		log.Fatalf("authentication failed: %v", err)
	}

	req := TranscriptionRequest{
		RecordingID:       os.Getenv("RECORDING_ID"),
		Language:          "en-US",
		Format:            "text",
		SpeakerDiarization: true,
		WordConfidence:    true,
		Timestamps:        true,
		WebhookURL:        os.Getenv("WEBHOOK_URL"),
	}

	if err := ValidateRequest(req); err != nil {
		log.Fatalf("validation failed: %v", err)
	}

	submissionTime := time.Now()
	job, err := submitTranscription(ctx, client, req)
	if err != nil {
		log.Fatalf("job submission failed: %v", err)
	}
	fmt.Printf("Transcription job submitted: ID=%s, Status=%s\n", job.ID, job.Status)

	result, err := pollTranscription(ctx, client, job.ID)
	if err != nil {
		log.Fatalf("polling failed: %v", err)
	}

	speakers, metrics, err := parseTranscriptResult(result, submissionTime)
	if err != nil {
		log.Fatalf("parsing failed: %v", err)
	}

	webhookStatus := "skipped"
	if req.WebhookURL != "" {
		if err := syncExternalAnalytics(req.WebhookURL, job.ID, metrics, speakers); err != nil {
			webhookStatus = fmt.Sprintf("failed: %v", err)
		} else {
			webhookStatus = "delivered"
		}
	}

	audit := AuditLog{
		Timestamp:     time.Now().UTC(),
		RecordingID:   req.RecordingID,
		TranscriptID:  job.ID,
		Status:        "completed",
		Metrics:       metrics,
		WebhookStatus: webhookStatus,
	}

	if err := writeAuditLog(audit); err != nil {
		log.Fatalf("audit log write failed: %v", err)
	}

	fmt.Printf("Processing complete. Latency: %.2fs, WER: %.4f, Words: %d\n", 
		metrics.LatencySeconds, metrics.WordErrorRate, metrics.TotalWords)
	for _, s := range speakers {
		fmt.Printf("Speaker %s: %s (Conf: %.2f)\n", s.SpeakerID, s.Text, s.AvgConf)
	}
}

The executable initializes authentication, validates the request, submits the job, polls for completion, parses the output, dispatches webhooks, calculates metrics, and writes the audit log. All operations run sequentially with context-aware cancellation support.

Common Errors & Debugging

Error: 401 Unauthorized

• Cause: Expired OAuth token, missing scopes, or invalid client credentials.
• Fix: Verify GENESYS_CLIENT_ID and GENESYS_CLIENT_SECRET match the configured confidential client. Ensure the client has transcription:read and transcription:write scopes assigned. Restart the application to force token refresh.
• Code: The initClient function returns an explicit error if credentials are missing. Check the auth provider logs for token endpoint failures.

Error: 403 Forbidden

• Cause: The authenticated user lacks permission to access the recording ID or the transcription service is disabled for the organization.
• Fix: Confirm the recording ID belongs to a queue or user accessible by the OAuth client. Enable transcription in the Genesys Cloud administration console under Analytics > Transcription.
• Code: Add a pre-flight check to GET /api/v2/recordings/{id} before submission to verify media access.

Error: 429 Too Many Requests

• Cause: Exceeding API rate limits for transcription submissions or polling.
• Fix: The retryOnTransient function implements exponential backoff. Increase baseDelay or implement request queuing if submitting bulk jobs.
• Code: Monitor the Retry-After header in 429 responses. The SDK automatically parses it, but custom logic can adjust maxDelay dynamically.

Error: 404 Not Found

• Cause: Invalid recording ID or transcription job ID.
• Fix: Validate recording IDs against /api/v2/recordings before submission. Ensure job IDs are stored correctly during submission.
• Code: Add explicit string validation for UUID formats in ValidateRequest.

Error: 500/503 Service Unavailable

• Cause: Transcription compute cluster is temporarily overloaded or undergoing maintenance.
• Fix: The polling loop catches 5xx errors and retries with backoff. Schedule non-critical jobs during off-peak hours.
• Code: The retryOnTransient function treats status codes >= 500 as transient. Adjust maxRetries for extended outages.

Official References

• Genesys Cloud Transcription API Documentation
• Genesys Cloud Go SDK Reference
• OAuth 2.0 Client Credentials Flow
• Recording API Reference