grafana/k6 · error

failed to create request: %w

Error message

failed to create request: %w

What it means

Building the HTTP request for a secret fetch failed at http.NewRequestWithContext — almost always an invalid URL after substituting the key into urlTemplate, or an invalid HTTP method configured for the source.

Source

Thrown at internal/secretsource/url/url.go:178

func (us *urlSecrets) Get(key string) (string, error) {
	ctx := context.Background()

	if err := us.limiter.Wait(ctx); err != nil {
		return "", fmt.Errorf("rate limiter error: %w", err)
	}

	var secret string
	// MaxRetries is the number of retries, so total attempts = retries + 1
	maxAttempts := int(us.config.MaxRetries.Int64) + 1
	backoff := time.Duration(us.config.RetryBackoff.Duration)

	err := retry(ctx, maxAttempts, backoff, us.logger, func() (error, bool) {
		// Replace {key} placeholder in URL template
		url := strings.ReplaceAll(us.config.URLTemplate, "{key}", key)

		req, err := http.NewRequestWithContext(ctx, us.config.Method.String, url, nil)
		if err != nil {
			return fmt.Errorf("failed to create request: %w", err), true
		}

		// Add headers
		for k, v := range us.config.Headers {
			req.Header.Set(k, v)
		}

		response, err := us.httpClient.Do(req) //nolint:gosec
		if err != nil {
			// Network errors are retryable
			return fmt.Errorf("failed to get secret: %w", err), true
		}
		defer func() { _ = response.Body.Close() }()

		if response.StatusCode != http.StatusOK {
			statusErr := fmt.Errorf("status code %d: %w", response.StatusCode, errFailedToGetSecret)

			// Retry on server errors (5xx) and rate limiting (429)

View on GitHub (pinned to 01ffac6f24)

Solutions

1. Fix urlTemplate so it forms a valid absolute URL for any key
2. Verify the configured HTTP method (GET/POST) is valid

When it happens

Trigger: Thrown at internal/secretsource/url/url.go:178 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of grafana/k6@01ffac6f24 (2026-08-18). Data as JSON: /api/errors/9ac6a58e5f4a8183. Report an issue: GitHub.