func BuildAttributes()

in http/server/contextlogger/context_logging.go [72:99]

• 22 lines of code
• 6 McCabe index (conditional complexity)

func BuildAttributes(ctx context.Context, r *http.Request, extractFunc func(ctx context.Context, r *http.Request) map[string]interface{}) []interface{} {
	md, ok := metadata.FromIncomingContext(ctx)
	headers := make(map[string]string)
	if ok {
		for key, values := range md {
			if len(values) > 0 {
				headers[key] = values[0]
			}
		}
	}

	attributes := defaultCtxLogAttributes(r)
	logAttrs := make(map[string]interface{})

	// Use the extract function to get additional attributes.
	if extractFunc != nil {
		extractedAttrs := extractFunc(ctx, r)
		for k, v := range extractedAttrs {
			logAttrs[k] = v
		}
	}

	// Include metadata headers as part of the attributes.
	attributes = append(attributes, "log", logAttrs)
	// grab desired headers from the request (based on extraction function passed to request ID middleware)
	attributes = append(attributes, "headers", headers)
	return attributes
}