| 55 | } |
| 56 | |
| 57 | func newHandler(includeExporterMetrics bool, maxRequests int, logger *slog.Logger) *handler { |
| 58 | h := &handler{ |
| 59 | exporterMetricsRegistry: prometheus.NewRegistry(), |
| 60 | includeExporterMetrics: includeExporterMetrics, |
| 61 | maxRequests: maxRequests, |
| 62 | logger: logger, |
| 63 | } |
| 64 | if h.includeExporterMetrics { |
| 65 | h.exporterMetricsRegistry.MustRegister( |
| 66 | promcollectors.NewProcessCollector(promcollectors.ProcessCollectorOpts{}), |
| 67 | promcollectors.NewGoCollector(), |
| 68 | ) |
| 69 | } |
| 70 | if innerHandler, err := h.innerHandler(); err != nil { |
| 71 | panic(fmt.Sprintf("Couldn't create metrics handler: %s", err)) |
| 72 | } else { |
| 73 | h.unfilteredHandler = innerHandler |
| 74 | } |
| 75 | return h |
| 76 | } |
| 77 | |
| 78 | // ServeHTTP implements http.Handler. |
| 79 | func (h *handler) ServeHTTP(w http.ResponseWriter, r *http.Request) { |