feat: metrics (#1024)

* refactor: switch from opencensus to opentelemetry

* tempo works as designed nooooot

* fix: log traceids

* with grafana agent

* fix: http tracing

* fix: cleanup files

* chore: remove todo

* fix: bad test

* fix: ignore methods in grpc interceptors

* fix: remove test log

* clean up

* typo

* fix(config): configure tracing endpoint

* fix(span): add error id to span

* feat: metrics package

* feat: metrics package

* fix: counter

* fix: metric

* try metrics

* fix: coutner metrics

* fix: active sessin counter

* fix: active sessin counter

* fix: change current Sequence table

* fix: change current Sequence table

* fix: current sequences

* fix: spooler div metrics

* fix: console view

* fix: merge master

* fix: Last spool run on search result instead of eventtimestamp

* fix: go mod

* Update console/src/assets/i18n/de.json

Co-authored-by: Livio Amstutz <livio.a@gmail.com>

* fix: pr review

* fix: map

* update oidc pkg

* fix: handlers

* fix: value observer

* fix: remove fmt

* fix: handlers

* fix: tests

* fix: handler minimum cycle duration 1s

* fix(spooler): handler channel buffer

* fix interceptors

Co-authored-by: adlerhurst <silvan.reusser@gmail.com>
Co-authored-by: Livio Amstutz <livio.a@gmail.com>

internal/telemetry/http_handler.go

@@ -0,0 +1,33 @@
+package telemetry
+
+import (
+	"github.com/caos/zitadel/internal/telemetry/metrics"
+	"net/http"
+	"strings"
+
+	"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
+)
+
+func shouldNotIgnore(endpoints ...string) func(r *http.Request) bool {
+	return func(r *http.Request) bool {
+		for _, endpoint := range endpoints {
+			if strings.HasPrefix(r.URL.RequestURI(), endpoint) {
+				return false
+			}
+		}
+		return true
+	}
+}
+
+func TelemetryHandler(handler http.Handler, ignoredEndpoints ...string) http.Handler {
+	return otelhttp.NewHandler(handler,
+		"zitadel",
+		otelhttp.WithFilter(shouldNotIgnore(ignoredEndpoints...)),
+		otelhttp.WithPublicEndpoint(),
+		otelhttp.WithSpanNameFormatter(spanNameFormatter),
+		otelhttp.WithMeterProvider(metrics.GetMetricsProvider()))
+}
+
+func spanNameFormatter(_ string, r *http.Request) string {
+	return r.Host + r.URL.EscapedPath()
+}