Enable pprof endpoints on metrics server

Using the helper from `pkg/runtime/pprof`, which follows the suggestion
from controller-runtime to use `AddMetricsExtraHandler`.

Signed-off-by: Hidde Beydals <[email protected]>

Author: hiddeco

go.mod

@@ -12,7 +12,7 @@ require (
 	github.com/fluxcd/image-reflector-controller/api v0.4.0
 	github.com/fluxcd/pkg/apis/meta v0.7.0
 	github.com/fluxcd/pkg/gittestserver v0.1.0
-	github.com/fluxcd/pkg/runtime v0.8.0
+	github.com/fluxcd/pkg/runtime v0.8.1
 	github.com/fluxcd/source-controller v0.7.0
 	// If you bump this, change SOURCE_VER in the Makefile to match
 	github.com/fluxcd/source-controller/api v0.7.0

go.sum

@@ -310,8 +310,9 @@ github.com/fluxcd/pkg/gittestserver v0.1.0 h1:BvIG+bBhgbmqhtpSS2qUpOXRIL1P1Ow2ja
 github.com/fluxcd/pkg/gittestserver v0.1.0/go.mod h1:HWZaoib03fQeSsauCAN2iAFdr6bnjKQ+CFxMFD2mwDY=
 github.com/fluxcd/pkg/helmtestserver v0.1.0/go.mod h1:3L+tbPn74PsHwHsyhbfk/kZAosrwMFTTA92XEFiwVAE=
 github.com/fluxcd/pkg/lockedfile v0.0.5/go.mod h1:uAtPUBId6a2RqO84MTH5HKGX0SbM1kNW3Wr/FhYyDVA=
-github.com/fluxcd/pkg/runtime v0.8.0 h1:cnSBZJLcXlKgjXpFFFExu+4ZncIxmPgNIx+ErLcCLnA=
 github.com/fluxcd/pkg/runtime v0.8.0/go.mod h1:tQwEN+RESjJmtwSSv7I+6bkNM9raIXpGsCjruaIVX6A=
+github.com/fluxcd/pkg/runtime v0.8.1 h1:8UxNz7GeI/HC3U5tpNCfrjRx2V7UjUegQOwCsd+EWxk=
+github.com/fluxcd/pkg/runtime v0.8.1/go.mod h1:tQwEN+RESjJmtwSSv7I+6bkNM9raIXpGsCjruaIVX6A=
 github.com/fluxcd/pkg/ssh v0.0.5 h1:rnbFZ7voy2JBlUfMbfyqArX2FYaLNpDhccGFC3qW83A=
 github.com/fluxcd/pkg/ssh v0.0.5/go.mod h1:7jXPdXZpc0ttMNz2kD9QuMi3RNn/e0DOFbj0Tij/+Hs=
 github.com/fluxcd/pkg/testserver v0.0.2/go.mod h1:pgUZTh9aQ44FSTQo+5NFlh7YMbUfdz1B80DalW7k96Y=

main.go

@@ -17,7 +17,6 @@ limitations under the License.
 package main
 
 import (
-	"github.com/fluxcd/pkg/runtime/client"
 	"os"
 
 	flag "github.com/spf13/pflag"
@@ -28,9 +27,11 @@ import (
 	ctrlmetrics "sigs.k8s.io/controller-runtime/pkg/metrics"
 
 	imagev1alpha1_reflect "github.com/fluxcd/image-reflector-controller/api/v1alpha1"
+	"github.com/fluxcd/pkg/runtime/client"
 	"github.com/fluxcd/pkg/runtime/events"
 	"github.com/fluxcd/pkg/runtime/logger"
 	"github.com/fluxcd/pkg/runtime/metrics"
+	"github.com/fluxcd/pkg/runtime/pprof"
 	"github.com/fluxcd/pkg/runtime/probes"
 	sourcev1 "github.com/fluxcd/source-controller/api/v1beta1"
 
@@ -117,6 +118,7 @@ func main() {
 	}
 
 	probes.SetupChecks(mgr, setupLog)
+	pprof.SetupHandlers(mgr, setupLog)
 
 	if err = (&controllers.ImageUpdateAutomationReconciler{
 		Client:                mgr.GetClient(),