outposts: remove duplicate startup/setup code, add pyroscope, make sentry not reconfigure every time (#14724)

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

internal/debug/debug.go

@@ -5,19 +5,24 @@ import (
 	"fmt"
 	"net/http"
 	"net/http/pprof"
+	"os"
+	"runtime"
 
 	"github.com/gorilla/mux"
+	"github.com/grafana/pyroscope-go"
 	log "github.com/sirupsen/logrus"
 	"goauthentik.io/internal/config"
 	"goauthentik.io/internal/utils/web"
 )
 
-func EnableDebugServer() {
-	l := log.WithField("logger", "authentik.go_debugger")
+var l = log.WithField("logger", "authentik.debugger.go")
+
+func EnableDebugServer(appName string) {
 	if !config.Get().Debug {
 		return
 	}
 	h := mux.NewRouter()
+	enablePyroscope(appName)
 	h.HandleFunc("/debug/pprof/", pprof.Index)
 	h.HandleFunc("/debug/pprof/cmdline", pprof.Cmdline)
 	h.HandleFunc("/debug/pprof/profile", pprof.Profile)
@@ -54,3 +59,38 @@ func EnableDebugServer() {
 		}
 	}()
 }
+
+func enablePyroscope(appName string) {
+	p, pok := os.LookupEnv("AUTHENTIK_PYROSCOPE_HOST")
+	if !pok {
+		return
+	}
+	l.Debug("Enabling pyroscope")
+	runtime.SetMutexProfileFraction(5)
+	runtime.SetBlockProfileRate(5)
+	hostname, err := os.Hostname()
+	if err != nil {
+		panic(err)
+	}
+	_, err = pyroscope.Start(pyroscope.Config{
+		ApplicationName: appName,
+		ServerAddress:   p,
+		Logger:          pyroscope.StandardLogger,
+		Tags:            map[string]string{"hostname": hostname},
+		ProfileTypes: []pyroscope.ProfileType{
+			pyroscope.ProfileCPU,
+			pyroscope.ProfileAllocObjects,
+			pyroscope.ProfileAllocSpace,
+			pyroscope.ProfileInuseObjects,
+			pyroscope.ProfileInuseSpace,
+			pyroscope.ProfileGoroutines,
+			pyroscope.ProfileMutexCount,
+			pyroscope.ProfileMutexDuration,
+			pyroscope.ProfileBlockCount,
+			pyroscope.ProfileBlockDuration,
+		},
+	})
+	if err != nil {
+		panic(err)
+	}
+}