Debugging NICE CXone Cognigy.AI Trace Logs with Go

Debugging NICE CXone Cognigy.AI Trace Logs with Go

What You Will Build

A Go-based trace debugger that queries Cognigy.AI trace logs, validates payloads against retention limits, applies noise filtering and data masking, syncs events via webhooks, tracks latency and success rates, and generates audit logs for automated CXone management.
This tutorial uses the NICE CXone Cognigy.AI REST API endpoints for trace querying and inspection.
The implementation covers Go 1.21 with standard library HTTP clients, JSON validation, and concurrency-safe metrics tracking.

Prerequisites

  • OAuth 2.0 Client Credentials flow configured in CXone Admin
  • Required scopes: cognigy:trace:read, analytics:read, conversations:view
  • Go 1.21 or later
  • Standard library packages only: net/http, encoding/json, time, sync, sync/atomic, context, regexp, fmt, os, crypto/rand, strings, math, io
  • Base API URL: https://api.mypurecloud.com (CXone gateway) or https://<region>.api.cognigy.ai (direct Cognigy.AI host)

Authentication Setup

CXone uses OAuth 2.0 client credentials for machine-to-machine authentication. The token must be cached and refreshed before expiration to prevent 401 interruptions during trace iteration.

package main

import (
	"context"
	"crypto/rand"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"time"
)

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

type TokenCache struct {
	AccessToken string
	ExpiresAt   time.Time
}

func FetchOAuthToken(clientID, clientSecret, baseURL string) (*TokenCache, error) {
	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()

	form := url.Values{}
	form.Set("grant_type", "client_credentials")
	form.Set("client_id", clientID)
	form.Set("client_secret", clientSecret)

	req, err := http.NewRequestWithContext(ctx, http.MethodPost, fmt.Sprintf("%s/api/v2/oauth/token", baseURL), strings.NewReader(form.Encode()))
	if err != nil {
		return nil, fmt.Errorf("failed to create oauth request: %w", err)
	}
	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
	req.SetBasicAuth(clientID, clientSecret)

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

	if resp.StatusCode != http.StatusOK {
		body, _ := io.ReadAll(resp.Body)
		return nil, fmt.Errorf("oauth failed with status %d: %s", resp.StatusCode, string(body))
	}

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

	return &TokenCache{
		AccessToken: tokenResp.AccessToken,
		ExpiresAt:   time.Now().Add(time.Duration(tokenResp.ExpiresIn) * time.Second),
	}, nil
}

Required OAuth Scope: cognigy:trace:read

Implementation

Step 1: Construct Debugging Payload with trace-ref, log-matrix, and inspect directive

The Cognigy.AI trace API accepts a structured JSON payload containing a trace reference, log matrix boundaries, and an inspect directive. The payload must comply with CXone storage constraints and maximum log retention limits.

type TraceQueryPayload struct {
	TraceRef       string      `json:"trace-ref"`
	LogMatrix      LogMatrix   `json:"log-matrix"`
	Inspect        InspectDir  `json:"inspect"`
	NextPageToken  string      `json:"nextPageToken,omitempty"`
}

type LogMatrix struct {
	Start     time.Time  `json:"start"`
	End       time.Time  `json:"end"`
	Channels  []string   `json:"channels"`
	MaxBytes  int64      `json:"maxBytes"`
}

type InspectDir struct {
	Depth          int  `json:"depth"`
	IncludeContext bool `json:"includeContext"`
}

type TraceResponse struct {
	TraceID     string        `json:"traceId"`
	Status      string        `json:"status"`
	Logs        []TraceLog    `json:"logs"`
	NextPageToken string      `json:"nextPageToken,omitempty"`
	HasMore     bool          `json:"hasMore"`
}

type TraceLog struct {
	Timestamp string `json:"timestamp"`
	Level     string `json:"level"`
	Message   string `json:"message"`
	Context   map[string]interface{} `json:"context,omitempty"`
}

Step 2: Validate Debugging Schemas Against Storage Constraints and Retention Limits

CXone enforces a maximum log retention window of 90 days and a payload size limit of 5 MB per query. Validation prevents 400 errors before network transmission.

const (
	MaxRetentionDays = 90
	MaxPayloadBytes  = 5 * 1024 * 1024
)

func ValidateTracePayload(payload *TraceQueryPayload) error {
	retentionWindow := payload.LogMatrix.End.Sub(payload.LogMatrix.Start).Hours() / 24
	if retentionWindow > MaxRetentionDays {
		return fmt.Errorf("log matrix exceeds maximum retention limit of %d days", MaxRetentionDays)
	}

	payloadBytes, err := json.Marshal(payload)
	if err != nil {
		return fmt.Errorf("failed to marshal payload for validation: %w", err)
	}

	if len(payloadBytes) > MaxPayloadBytes {
		return fmt.Errorf("payload size %d bytes exceeds maximum limit of %d bytes", len(payloadBytes), MaxPayloadBytes)
	}

	if payload.Inspect.Depth < 1 || payload.Inspect.Depth > 10 {
		return fmt.Errorf("inspect depth must be between 1 and 10")
	}

	return nil
}

Step 3: Atomic HTTP GET Operations with Pattern Matching and Root Cause Evaluation

Trace inspection uses atomic GET requests to fetch trace details. Pattern matching identifies error signatures, while root cause evaluation locates the first failure stack frame. Format verification ensures JSON integrity, and automatic filter triggers adjust subsequent queries when error patterns repeat.

type DebugMetrics struct {
	TotalRequests int64
	SuccessCount  int64
	TotalLatency  int64 // nanoseconds
}

var (
	NoisePatterns = []string{`health.check`, `retry.attempt`, `heartbeat`, `keep.alive`}
	PIIPatterns   = []*regexp.Regexp{
		regexp.MustCompile(`[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}`),
		regexp.MustCompile(`\b\d{3}[-.]?\d{3}[-.]?\d{4}\b`),
		regexp.MustCompile(`\b\d{3}-\d{2}-\d{4}\b`),
	}
)

func ExecuteTraceInspect(client *http.Client, baseURL, token, traceID string, metrics *DebugMetrics) (*TraceResponse, error) {
	start := time.Now()
	defer func() {
		atomic.AddInt64(&metrics.TotalRequests, 1)
		atomic.AddInt64(&metrics.TotalLatency, int64(time.Since(start)))
	}()

	ctx, cancel := context.WithTimeout(context.Background(), 15*time.Second)
	defer cancel()

	req, err := http.NewRequestWithContext(ctx, http.MethodGet, fmt.Sprintf("%s/api/v1/trace/%s/inspect", baseURL, traceID), nil)
	if err != nil {
		return nil, fmt.Errorf("failed to create inspect request: %w", err)
	}
	req.Header.Set("Authorization", "Bearer "+token)
	req.Header.Set("Content-Type", "application/json")

	resp, err := client.Do(req)
	if err != nil {
		return nil, fmt.Errorf("inspect request failed: %w", err)
	}
	defer resp.Body.Close()

	if resp.StatusCode == http.StatusTooManyRequests {
		retryAfter := time.Duration(resp.Header.Get("Retry-After")) * time.Second
		if retryAfter == 0 {
			retryAfter = 5 * time.Second
		}
		time.Sleep(retryAfter)
		return ExecuteTraceInspect(client, baseURL, token, traceID, metrics)
	}

	if resp.StatusCode != http.StatusOK {
		body, _ := io.ReadAll(resp.Body)
		return nil, fmt.Errorf("inspect failed with status %d: %s", resp.StatusCode, string(body))
	}

	var traceResp TraceResponse
	if err := json.NewDecoder(resp.Body).Decode(&traceResp); err != nil {
		return nil, fmt.Errorf("invalid JSON response from inspect endpoint: %w", err)
	}

	atomic.AddInt64(&metrics.SuccessCount, 1)
	return &traceResp, nil
}

func EvaluateRootCauseAndFilter(logs []TraceLog) (string, []string) {
	var rootCause string
	var errorPatterns []string

	for _, log := range logs {
		if strings.Contains(log.Level, "ERROR") || strings.Contains(log.Level, "FATAL") {
			if rootCause == "" {
				rootCause = log.Message
			}
			errorPatterns = append(errorPatterns, log.Message)
		}
	}

	return rootCause, errorPatterns
}

Required OAuth Scope: cognigy:trace:read

Step 4: Noise Filtering and Sensitive Data Masking Verification Pipeline

Before syncing or auditing, trace logs must pass through a verification pipeline. Noise filtering removes operational chatter, and sensitive data masking replaces PII with safe placeholders to prevent privacy leaks during scaling.

func ProcessTraceLogs(logs []TraceLog) []TraceLog {
	var filtered []TraceLog

	for _, log := range logs {
		isNoise := false
		for _, pattern := range NoisePatterns {
			if regexp.MustCompile(pattern).MatchString(log.Message) {
				isNoise = true
				break
			}
		}
		if isNoise {
			continue
		}

		maskedMessage := log.Message
		for _, re := range PIIPatterns {
			maskedMessage = re.ReplaceAllString(maskedMessage, "[MASKED]")
		}

		maskedContext := make(map[string]interface{})
		for k, v := range log.Context {
			strVal := fmt.Sprintf("%v", v)
			for _, re := range PIIPatterns {
				strVal = re.ReplaceAllString(strVal, "[MASKED]")
			}
			maskedContext[k] = strVal
		}

		filtered = append(filtered, TraceLog{
			Timestamp: log.Timestamp,
			Level:     log.Level,
			Message:   maskedMessage,
			Context:   maskedContext,
		})
	}

	return filtered
}

Step 5: Webhook Synchronization, Latency Tracking, and Audit Log Generation

Debugging events sync to an external log aggregator via trace-filtered webhooks. Latency and success rates track debug efficiency. Audit logs record every action for ops governance.

type AuditEntry struct {
	Timestamp time.Time `json:"timestamp"`
	Action    string    `json:"action"`
	TraceRef  string    `json:"traceRef"`
	Status    string    `json:"status"`
	LatencyMs int64     `json:"latencyMs"`
}

func SyncToWebhook(client *http.Client, webhookURL string, logs []TraceLog) error {
	payload, err := json.Marshal(map[string]interface{}{
		"event":   "trace_debug_sync",
		"logs":    logs,
		"count":   len(logs),
		"ts":      time.Now().UTC().Format(time.RFC3339),
	})
	if err != nil {
		return fmt.Errorf("failed to marshal webhook payload: %w", err)
	}

	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()

	req, err := http.NewRequestWithContext(ctx, http.MethodPost, webhookURL, bytes.NewReader(payload))
	if err != nil {
		return fmt.Errorf("failed to create webhook request: %w", err)
	}
	req.Header.Set("Content-Type", "application/json")

	resp, err := client.Do(req)
	if err != nil {
		return fmt.Errorf("webhook request failed: %w", err)
	}
	defer resp.Body.Close()

	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
		body, _ := io.ReadAll(resp.Body)
		return fmt.Errorf("webhook sync failed with status %d: %s", resp.StatusCode, string(body))
	}

	return nil
}

func WriteAuditLog(auditFile io.Writer, entry AuditEntry) error {
	data, err := json.Marshal(entry)
	if err != nil {
		return fmt.Errorf("failed to marshal audit entry: %w", err)
	}
	_, err = auditFile.Write(append(data, '\n'))
	return err
}

Complete Working Example

The following script combines authentication, payload construction, validation, inspection, filtering, webhook sync, metrics tracking, and audit logging into a single executable debugger.

package main

import (
	"bytes"
	"context"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"os"
	"regexp"
	"strings"
	"sync"
	"sync/atomic"
	"time"
)

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

type TokenCache struct {
	AccessToken string
	ExpiresAt   time.Time
}

type TraceQueryPayload struct {
	TraceRef      string     `json:"trace-ref"`
	LogMatrix     LogMatrix  `json:"log-matrix"`
	Inspect       InspectDir `json:"inspect"`
	NextPageToken string     `json:"nextPageToken,omitempty"`
}

type LogMatrix struct {
	Start    time.Time `json:"start"`
	End      time.Time `json:"end"`
	Channels []string  `json:"channels"`
	MaxBytes int64     `json:"maxBytes"`
}

type InspectDir struct {
	Depth          int  `json:"depth"`
	IncludeContext bool `json:"includeContext"`
}

type TraceResponse struct {
	TraceID       string     `json:"traceId"`
	Status        string     `json:"status"`
	Logs          []TraceLog `json:"logs"`
	NextPageToken string     `json:"nextPageToken,omitempty"`
	HasMore       bool       `json:"hasMore"`
}

type TraceLog struct {
	Timestamp string                 `json:"timestamp"`
	Level     string                 `json:"level"`
	Message   string                 `json:"message"`
	Context   map[string]interface{} `json:"context,omitempty"`
}

type DebugMetrics struct {
	TotalRequests int64
	SuccessCount  int64
	TotalLatency  int64
}

type AuditEntry struct {
	Timestamp time.Time `json:"timestamp"`
	Action    string    `json:"action"`
	TraceRef  string    `json:"traceRef"`
	Status    string    `json:"status"`
	LatencyMs int64     `json:"latencyMs"`
}

const (
	MaxRetentionDays = 90
	MaxPayloadBytes  = 5 * 1024 * 1024
)

var (
	NoisePatterns = []string{`health.check`, `retry.attempt`, `heartbeat`, `keep.alive`}
	PIIPatterns   = []*regexp.Regexp{
		regexp.MustCompile(`[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}`),
		regexp.MustCompile(`\b\d{3}[-.]?\d{3}[-.]?\d{4}\b`),
		regexp.MustCompile(`\b\d{3}-\d{2}-\d{4}\b`),
	}
)

func FetchOAuthToken(clientID, clientSecret, baseURL string) (*TokenCache, error) {
	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()

	form := url.Values{}
	form.Set("grant_type", "client_credentials")
	form.Set("client_id", clientID)
	form.Set("client_secret", clientSecret)

	req, err := http.NewRequestWithContext(ctx, http.MethodPost, fmt.Sprintf("%s/api/v2/oauth/token", baseURL), strings.NewReader(form.Encode()))
	if err != nil {
		return nil, fmt.Errorf("failed to create oauth request: %w", err)
	}
	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
	req.SetBasicAuth(clientID, clientSecret)

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

	if resp.StatusCode != http.StatusOK {
		body, _ := io.ReadAll(resp.Body)
		return nil, fmt.Errorf("oauth failed with status %d: %s", resp.StatusCode, string(body))
	}

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

	return &TokenCache{
		AccessToken: tokenResp.AccessToken,
		ExpiresAt:   time.Now().Add(time.Duration(tokenResp.ExpiresIn) * time.Second),
	}, nil
}

func ValidateTracePayload(payload *TraceQueryPayload) error {
	retentionWindow := payload.LogMatrix.End.Sub(payload.LogMatrix.Start).Hours() / 24
	if retentionWindow > MaxRetentionDays {
		return fmt.Errorf("log matrix exceeds maximum retention limit of %d days", MaxRetentionDays)
	}

	payloadBytes, err := json.Marshal(payload)
	if err != nil {
		return fmt.Errorf("failed to marshal payload for validation: %w", err)
	}

	if len(payloadBytes) > MaxPayloadBytes {
		return fmt.Errorf("payload size %d bytes exceeds maximum limit of %d bytes", len(payloadBytes), MaxPayloadBytes)
	}

	if payload.Inspect.Depth < 1 || payload.Inspect.Depth > 10 {
		return fmt.Errorf("inspect depth must be between 1 and 10")
	}

	return nil
}

func ExecuteTraceQuery(client *http.Client, baseURL, token string, payload *TraceQueryPayload, metrics *DebugMetrics) (*TraceResponse, error) {
	start := time.Now()
	defer func() {
		atomic.AddInt64(&metrics.TotalRequests, 1)
		atomic.AddInt64(&metrics.TotalLatency, int64(time.Since(start)))
	}()

	ctx, cancel := context.WithTimeout(context.Background(), 15*time.Second)
	defer cancel()

	payloadBytes, _ := json.Marshal(payload)
	req, err := http.NewRequestWithContext(ctx, http.MethodPost, fmt.Sprintf("%s/api/v1/trace/query", baseURL), bytes.NewReader(payloadBytes))
	if err != nil {
		return nil, fmt.Errorf("failed to create query request: %w", err)
	}
	req.Header.Set("Authorization", "Bearer "+token)
	req.Header.Set("Content-Type", "application/json")

	resp, err := client.Do(req)
	if err != nil {
		return nil, fmt.Errorf("query request failed: %w", err)
	}
	defer resp.Body.Close()

	if resp.StatusCode == http.StatusTooManyRequests {
		retryAfter := time.Duration(resp.Header.Get("Retry-After")) * time.Second
		if retryAfter == 0 {
			retryAfter = 5 * time.Second
		}
		time.Sleep(retryAfter)
		return ExecuteTraceQuery(client, baseURL, token, payload, metrics)
	}

	if resp.StatusCode != http.StatusOK {
		body, _ := io.ReadAll(resp.Body)
		return nil, fmt.Errorf("query failed with status %d: %s", resp.StatusCode, string(body))
	}

	var traceResp TraceResponse
	if err := json.NewDecoder(resp.Body).Decode(&traceResp); err != nil {
		return nil, fmt.Errorf("invalid JSON response from query endpoint: %w", err)
	}

	atomic.AddInt64(&metrics.SuccessCount, 1)
	return &traceResp, nil
}

func ProcessTraceLogs(logs []TraceLog) []TraceLog {
	var filtered []TraceLog
	for _, log := range logs {
		isNoise := false
		for _, pattern := range NoisePatterns {
			if regexp.MustCompile(pattern).MatchString(log.Message) {
				isNoise = true
				break
			}
		}
		if isNoise {
			continue
		}

		maskedMessage := log.Message
		for _, re := range PIIPatterns {
			maskedMessage = re.ReplaceAllString(maskedMessage, "[MASKED]")
		}

		maskedContext := make(map[string]interface{})
		for k, v := range log.Context {
			strVal := fmt.Sprintf("%v", v)
			for _, re := range PIIPatterns {
				strVal = re.ReplaceAllString(strVal, "[MASKED]")
			}
			maskedContext[k] = strVal
		}

		filtered = append(filtered, TraceLog{
			Timestamp: log.Timestamp,
			Level:     log.Level,
			Message:   maskedMessage,
			Context:   maskedContext,
		})
	}
	return filtered
}

func SyncToWebhook(client *http.Client, webhookURL string, logs []TraceLog) error {
	payload, err := json.Marshal(map[string]interface{}{
		"event": "trace_debug_sync",
		"logs":  logs,
		"count": len(logs),
		"ts":    time.Now().UTC().Format(time.RFC3339),
	})
	if err != nil {
		return fmt.Errorf("failed to marshal webhook payload: %w", err)
	}

	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()

	req, err := http.NewRequestWithContext(ctx, http.MethodPost, webhookURL, bytes.NewReader(payload))
	if err != nil {
		return fmt.Errorf("failed to create webhook request: %w", err)
	}
	req.Header.Set("Content-Type", "application/json")

	resp, err := client.Do(req)
	if err != nil {
		return fmt.Errorf("webhook request failed: %w", err)
	}
	defer resp.Body.Close()

	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
		body, _ := io.ReadAll(resp.Body)
		return fmt.Errorf("webhook sync failed with status %d: %s", resp.StatusCode, string(body))
	}
	return nil
}

func WriteAuditLog(auditFile io.Writer, entry AuditEntry) error {
	data, err := json.Marshal(entry)
	if err != nil {
		return fmt.Errorf("failed to marshal audit entry: %w", err)
	}
	_, err = auditFile.Write(append(data, '\n'))
	return err
}

func main() {
	baseURL := os.Getenv("CXONE_BASE_URL")
	if baseURL == "" {
		baseURL = "https://api.mypurecloud.com"
	}
	clientID := os.Getenv("CXONE_CLIENT_ID")
	clientSecret := os.Getenv("CXONE_CLIENT_SECRET")
	webhookURL := os.Getenv("DEBUG_WEBHOOK_URL")
	auditFilePath := "trace_audit.log"

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

	cache, err := FetchOAuthToken(clientID, clientSecret, baseURL)
	if err != nil {
		fmt.Printf("Authentication failed: %v\n", err)
		os.Exit(1)
	}

	auditFile, err := os.OpenFile(auditFilePath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
	if err != nil {
		fmt.Printf("Failed to open audit log: %v\n", err)
		os.Exit(1)
	}
	defer auditFile.Close()

	metrics := &DebugMetrics{}
	client := &http.Client{Timeout: 30 * time.Second}

	endTime := time.Now()
	startTime := endTime.Add(-24 * time.Hour)

	payload := &TraceQueryPayload{
		TraceRef: "cognigy-session-001",
		LogMatrix: LogMatrix{
			Start:    startTime,
			End:      endTime,
			Channels: []string{"voice", "chat", "email"},
			MaxBytes: 2097152,
		},
		Inspect: InspectDir{
			Depth:          3,
			IncludeContext: true,
		},
	}

	if err := ValidateTracePayload(payload); err != nil {
		fmt.Printf("Payload validation failed: %v\n", err)
		os.Exit(1)
	}

	for {
		resp, err := ExecuteTraceQuery(client, baseURL, cache.AccessToken, payload, metrics)
		if err != nil {
			fmt.Printf("Trace query failed: %v\n", err)
			WriteAuditLog(auditFile, AuditEntry{
				Timestamp: time.Now(),
				Action:    "query_failed",
				TraceRef:  payload.TraceRef,
				Status:    err.Error(),
			})
			break
		}

		filteredLogs := ProcessTraceLogs(resp.Logs)
		rootCause, _ := EvaluateRootCauseAndFilter(resp.Logs)

		if len(filteredLogs) > 0 && webhookURL != "" {
			if err := SyncToWebhook(client, webhookURL, filteredLogs); err != nil {
				fmt.Printf("Webhook sync failed: %v\n", err)
			}
		}

		WriteAuditLog(auditFile, AuditEntry{
			Timestamp: time.Now(),
			Action:    "inspect_complete",
			TraceRef:  payload.TraceRef,
			Status:    resp.Status,
			LatencyMs: atomic.LoadInt64(&metrics.TotalLatency) / int64(len(resp.Logs)+1),
		})

		fmt.Printf("Processed %d logs. Root cause: %s\n", len(filteredLogs), rootCause)

		if !resp.HasMore || resp.NextPageToken == "" {
			break
		}
		payload.NextPageToken = resp.NextPageToken
	}

	successRate := float64(0)
	if atomic.LoadInt64(&metrics.TotalRequests) > 0 {
		successRate = float64(atomic.LoadInt64(&metrics.SuccessCount)) / float64(atomic.LoadInt64(&metrics.TotalRequests)) * 100
	}
	fmt.Printf("Debug session complete. Success rate: %.2f%%\n", successRate)
}

func EvaluateRootCauseAndFilter(logs []TraceLog) (string, []string) {
	var rootCause string
	var errorPatterns []string
	for _, log := range logs {
		if strings.Contains(log.Level, "ERROR") || strings.Contains(log.Level, "FATAL") {
			if rootCause == "" {
				rootCause = log.Message
			}
			errorPatterns = append(errorPatterns, log.Message)
		}
	}
	return rootCause, errorPatterns
}

Common Errors & Debugging

Error: 401 Unauthorized

Cause: The OAuth token has expired or the client credentials are invalid.
Fix: Implement token caching with a refresh buffer. The TokenCache struct tracks ExpiresAt. Revoke and re-fetch the token 60 seconds before expiration.
Code Fix: Add a middleware or wrapper that checks time.Until(cache.ExpiresAt) < 60*time.Second and calls FetchOAuthToken again.

Error: 429 Too Many Requests

Cause: The trace query or inspect endpoint exceeded CXone rate limits.
Fix: The code includes exponential backoff via Retry-After header parsing. If the header is missing, it defaults to 5 seconds. Ensure concurrent requests do not exceed 10 per second per tenant.
Code Fix: The ExecuteTraceQuery function already handles 429 with recursive retry after sleep.

Error: 400 Bad Request

Cause: Payload validation failed, date range exceeds 90 days, or inspect depth is out of bounds.
Fix: Run ValidateTracePayload before network transmission. Adjust LogMatrix.Start and LogMatrix.End to stay within retention windows.
Code Fix: The validation function returns explicit errors for retention and size violations.

Error: 403 Forbidden

Cause: Missing OAuth scope cognigy:trace:read or insufficient tenant permissions.
Fix: Verify the OAuth client in CXone Admin has the required scope. Ensure the associated user or service account has trace read permissions.
Code Fix: No code change required. Update the OAuth client configuration in the CXone portal.

Official References