add XR state metrics

Signed-off-by: ezgidemirel <ezgidemirel91@gmail.com>

go.mod

@@ -19,6 +19,7 @@ require (
 	k8s.io/api v0.29.1
 	k8s.io/apiextensions-apiserver v0.29.1
 	k8s.io/apimachinery v0.29.1
+	k8s.io/apiserver v0.29.1
 	k8s.io/client-go v0.29.1
 	k8s.io/component-base v0.29.1
 	k8s.io/klog/v2 v2.110.1

go.sum

@@ -352,6 +352,8 @@ k8s.io/apiextensions-apiserver v0.29.1 h1:S9xOtyk9M3Sk1tIpQMu9wXHm5O2MX6Y1kIpPMi
 k8s.io/apiextensions-apiserver v0.29.1/go.mod h1:zZECpujY5yTW58co8V2EQR4BD6A9pktVgHhvc0uLfeU=
 k8s.io/apimachinery v0.29.1 h1:KY4/E6km/wLBguvCZv8cKTeOwwOBqFNjwJIdMkMbbRc=
 k8s.io/apimachinery v0.29.1/go.mod h1:6HVkd1FwxIagpYrHSwJlQqZI3G9LfYWRPAkUvLnXTKU=
+k8s.io/apiserver v0.29.1 h1:e2wwHUfEmMsa8+cuft8MT56+16EONIEK8A/gpBSco+g=
+k8s.io/apiserver v0.29.1/go.mod h1:V0EpkTRrJymyVT3M49we8uh2RvXf7fWC5XLB0P3SwRw=
 k8s.io/client-go v0.29.1 h1:19B/+2NGEwnFLzt0uB5kNJnfTsbV8w6TgQRz9l7ti7A=
 k8s.io/client-go v0.29.1/go.mod h1:TDG/psL9hdet0TI9mGyHJSgRkW3H9JZk2dNEUS7bRks=
 k8s.io/component-base v0.29.1 h1:MUimqJPCRnnHsskTTjKD+IC1EHBbRCVyi37IoFBrkYw=

pkg/controller/options.go

@@ -27,6 +27,7 @@ import (
 	"github.com/crossplane/crossplane-runtime/pkg/logging"
 	"github.com/crossplane/crossplane-runtime/pkg/ratelimiter"
 	"github.com/crossplane/crossplane-runtime/pkg/reconciler/managed"
+	"github.com/crossplane/crossplane-runtime/pkg/statemetrics"
 )
 
 // DefaultOptions returns a functional set of options with conservative
@@ -65,7 +66,7 @@ type Options struct {
 
 	MetricRecorder managed.MetricRecorder
 
-	StateRecorder managed.StateRecorder
+	StateRecorder statemetrics.StateRecorder
 }
 
 // ForControllerRuntime extracts options for controller-runtime.

pkg/reconciler/managed/metrics.go

@@ -61,25 +61,25 @@ func NewMRMetricRecorder() *MRMetricRecorder {
 			Name:      "managed_resource_time_to_first_reconcile_seconds",
 			Help:      "The time it took for a managed resource to be detected by the controller",
 			Buckets:   kmetrics.ExponentialBuckets(10e-9, 10, 10),
-		}, []string{"gvk", "claim", "composite"}),
+		}, []string{"gvk"}),
 		mrFirstTimeReady: prometheus.NewHistogramVec(prometheus.HistogramOpts{
 			Subsystem: subSystem,
 			Name:      "managed_resource_first_time_to_readiness_seconds",
 			Help:      "The time it took for a managed resource to become ready first time after creation",
 			Buckets:   []float64{1, 5, 10, 15, 30, 60, 120, 300, 600, 1800, 3600},
-		}, []string{"gvk", "claim", "composite"}),
+		}, []string{"gvk"}),
 		mrDeletion: prometheus.NewHistogramVec(prometheus.HistogramOpts{
 			Subsystem: subSystem,
 			Name:      "managed_resource_deletion_seconds",
 			Help:      "The time it took for a managed resource to be deleted",
 			Buckets:   []float64{1, 5, 10, 15, 30, 60, 120, 300, 600, 1800, 3600},
-		}, []string{"gvk", "claim", "composite"}),
+		}, []string{"gvk"}),
 		mrDrift: prometheus.NewHistogramVec(prometheus.HistogramOpts{
 			Subsystem: subSystem,
 			Name:      "managed_resource_drift_seconds",
 			Help:      "ALPHA: How long since the previous successful reconcile when a resource was found to be out of sync; excludes restart of the provider",
 			Buckets:   kmetrics.ExponentialBuckets(10e-9, 10, 10),
-		}, []string{"gvk", "claim", "composite"}),
+		}, []string{"gvk"}),
 	}
 }
 
@@ -109,7 +109,8 @@ func (r *MRMetricRecorder) recordUnchanged(name string) {
 
 func (r *MRMetricRecorder) recordFirstTimeReconciled(managed resource.Managed) {
 	if managed.GetCondition(xpv1.TypeSynced).Status == corev1.ConditionUnknown {
-		r.mrDetected.With(getMRMetricLabels(managed)).Observe(time.Since(managed.GetCreationTimestamp().Time).Seconds())
+		r.mrDetected.WithLabelValues("gvk", managed.GetObjectKind().GroupVersionKind().String()).
+			Observe(time.Since(managed.GetCreationTimestamp().Time).Seconds())
 		r.firstObservation.Store(managed.GetName(), time.Now()) // this is the first time we reconciled on this resource
 	}
 }
@@ -125,13 +126,15 @@ func (r *MRMetricRecorder) recordDrift(managed resource.Managed) {
 		return
 	}
 
-	r.mrDrift.With(getMRMetricLabels(managed)).Observe(time.Since(lt).Seconds())
+	r.mrDrift.WithLabelValues("gvk", managed.GetObjectKind().GroupVersionKind().String()).
+		Observe(time.Since(lt).Seconds())
 
 	r.lastObservation.Store(name, time.Now())
 }
 
 func (r *MRMetricRecorder) recordDeleted(managed resource.Managed) {
-	r.mrDeletion.With(getMRMetricLabels(managed)).Observe(time.Since(managed.GetDeletionTimestamp().Time).Seconds())
+	r.mrDeletion.WithLabelValues("gvk", managed.GetObjectKind().GroupVersionKind().String()).
+		Observe(time.Since(managed.GetDeletionTimestamp().Time).Seconds())
 }
 
 func (r *MRMetricRecorder) recordFirstTimeReady(managed resource.Managed) {
@@ -142,7 +145,8 @@ func (r *MRMetricRecorder) recordFirstTimeReady(managed resource.Managed) {
 		if !ok {
 			return
 		}
-		r.mrFirstTimeReady.With(getMRMetricLabels(managed)).Observe(time.Since(managed.GetCreationTimestamp().Time).Seconds())
+		r.mrFirstTimeReady.WithLabelValues("gvk", managed.GetObjectKind().GroupVersionKind().String()).
+			Observe(time.Since(managed.GetCreationTimestamp().Time).Seconds())
 		r.firstObservation.Delete(managed.GetName())
 	}
 }
@@ -170,17 +174,3 @@ func (r *NopMetricRecorder) recordDrift(_ resource.Managed) {}
 func (r *NopMetricRecorder) recordDeleted(_ resource.Managed) {}
 
 func (r *NopMetricRecorder) recordFirstTimeReady(_ resource.Managed) {}
-
-func getMRMetricLabels(managed resource.Managed) prometheus.Labels {
-	l := prometheus.Labels{
-		"gvk":       managed.GetObjectKind().GroupVersionKind().String(),
-		"claim":     "",
-		"composite": managed.GetLabels()["crossplane.io/composite"],
-	}
-
-	if managed.GetLabels()["crossplane.io/claim-namespace"] != "" && managed.GetLabels()["crossplane.io/claim-name"] != "" {
-		l["claim"] = managed.GetLabels()["crossplane.io/claim-namespace"] + "/" + managed.GetLabels()["crossplane.io/claim-name"]
-	}
-
-	return l
-}

pkg/reconciler/managed/reconciler.go

@@ -36,6 +36,7 @@ import (
 	"github.com/crossplane/crossplane-runtime/pkg/logging"
 	"github.com/crossplane/crossplane-runtime/pkg/meta"
 	"github.com/crossplane/crossplane-runtime/pkg/resource"
+	"github.com/crossplane/crossplane-runtime/pkg/statemetrics"
 )
 
 const (
@@ -488,7 +489,7 @@ type Reconciler struct {
 	log            logging.Logger
 	record         event.Recorder
 	metricRecorder MetricRecorder
-	stateRecorder  StateRecorder
+	stateRecorder  statemetrics.StateRecorder
 }
 
 type mrManaged struct {
@@ -554,7 +555,7 @@ func WithMetricRecorder(recorder MetricRecorder) ReconcilerOption {
 }
 
 // WithStateRecorder configures the Reconciler to use the supplied StateRecorder.
-func WithStateRecorder(recorder StateRecorder) ReconcilerOption {
+func WithStateRecorder(recorder statemetrics.StateRecorder) ReconcilerOption {
 	return func(r *Reconciler) {
 		r.stateRecorder = recorder
 	}
@@ -718,7 +719,7 @@ func NewReconciler(m manager.Manager, of resource.ManagedKind, o ...ReconcilerOp
 		log:                         logging.NewNopLogger(),
 		record:                      event.NewNopRecorder(),
 		metricRecorder:              NewNopMetricRecorder(),
-		stateRecorder:               NewNopStateRecorder(),
+		stateRecorder:               statemetrics.NewNopStateRecorder(),
 	}
 
 	for _, ro := range o {

pkg/reconciler/managed/state_metrics.go → pkg/statemetrics/mr_state_metrics.go

@@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package managed
+package statemetrics
 
 import (
 	"context"
@@ -31,31 +31,26 @@ import (
 	"github.com/crossplane/crossplane-runtime/pkg/logging"
 )
 
-// A StateRecorder records the state of given GroupVersionKind.
-type StateRecorder interface {
-	Describe(ch chan<- *prometheus.Desc)
-	Collect(ch chan<- prometheus.Metric)
-
-	Record(ctx context.Context, gvk schema.GroupVersionKind)
-	Run(ctx context.Context, gvk schema.GroupVersionKind)
-}
+// A MRStateRecorderOption configures a MRStateRecorder.
+type MRStateRecorderOption func(*MRStateRecorder)
 
 // A MRStateRecorder records the state of managed resources.
 type MRStateRecorder struct {
-	client    client.Client
-	log       logging.Logger
-	frequency time.Duration
+	client   client.Client
+	log      logging.Logger
+	interval time.Duration
 
 	mrExists *prometheus.GaugeVec
 	mrReady  *prometheus.GaugeVec
 	mrSynced *prometheus.GaugeVec
 }
 
 // NewMRStateRecorder returns a new MRStateRecorder which records the state of managed resources.
-func NewMRStateRecorder(client client.Client, log logging.Logger, o ...StateRecorderOption) *MRStateRecorder {
-	r := &MRStateRecorder{
-		client: client,
-		log:    log,
+func NewMRStateRecorder(client client.Client, log logging.Logger, interval time.Duration) *MRStateRecorder {
+	return &MRStateRecorder{
+		client:   client,
+		log:      log,
+		interval: interval,
 
 		mrExists: prometheus.NewGaugeVec(prometheus.GaugeOpts{
 			Subsystem: subSystem,
@@ -73,23 +68,6 @@ func NewMRStateRecorder(client client.Client, log logging.Logger, o ...StateReco
 			Help:      "The number of managed resources in Synced=True state",
 		}, []string{"gvk"}),
 	}
-
-	for _, ro := range o {
-		ro(r)
-	}
-
-	return r
-}
-
-// A StateRecorderOption configures a MRStateRecorder.
-type StateRecorderOption func(*MRStateRecorder)
-
-// WithFrequency configures the frequency at which the MRStateRecorder
-// will record.
-func WithFrequency(f time.Duration) StateRecorderOption {
-	return func(r *MRStateRecorder) {
-		r.frequency = f
-	}
 }
 
 // Describe sends the super-set of all possible descriptors of metrics
@@ -145,9 +123,9 @@ func (r *MRStateRecorder) Record(ctx context.Context, gvk schema.GroupVersionKin
 	r.mrSynced.WithLabelValues(label).Set(numSynced)
 }
 
-// Run records state of managed resources with given frequency.
+// Run records state of managed resources with given interval.
 func (r *MRStateRecorder) Run(ctx context.Context, gvk schema.GroupVersionKind) {
-	ticker := time.NewTicker(r.frequency)
+	ticker := time.NewTicker(r.interval)
 	quit := make(chan struct{})
 	go func() {
 		for {
@@ -161,23 +139,3 @@ func (r *MRStateRecorder) Run(ctx context.Context, gvk schema.GroupVersionKind)
 		}
 	}()
 }
-
-// A NopStateRecorder does nothing.
-type NopStateRecorder struct{}
-
-// NewNopStateRecorder returns a NopStateRecorder that does nothing.
-func NewNopStateRecorder() *NopStateRecorder {
-	return &NopStateRecorder{}
-}
-
-// Describe does nothing.
-func (r *NopStateRecorder) Describe(_ chan<- *prometheus.Desc) {}
-
-// Collect does nothing.
-func (r *NopStateRecorder) Collect(_ chan<- prometheus.Metric) {}
-
-// Record does nothing.
-func (r *NopStateRecorder) Record(_ context.Context, _ schema.GroupVersionKind) {}
-
-// Run does nothing.
-func (r *NopStateRecorder) Run(_ context.Context, _ schema.GroupVersionKind) {}

pkg/statemetrics/state_recorder.go

@@ -0,0 +1,56 @@
+/*
+Copyright 2024 The Crossplane Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+	http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package statemetrics contains utilities for recording Crossplane resource state metrics.
+package statemetrics
+
+import (
+	"context"
+
+	"github.com/prometheus/client_golang/prometheus"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+)
+
+const subSystem = "crossplane"
+
+// A StateRecorder records the state of given GroupVersionKind.
+type StateRecorder interface {
+	Describe(ch chan<- *prometheus.Desc)
+	Collect(ch chan<- prometheus.Metric)
+
+	Record(ctx context.Context, gvk schema.GroupVersionKind)
+	Run(ctx context.Context, gvk schema.GroupVersionKind)
+}
+
+// A NopStateRecorder does nothing.
+type NopStateRecorder struct{}
+
+// NewNopStateRecorder returns a NopStateRecorder that does nothing.
+func NewNopStateRecorder() *NopStateRecorder {
+	return &NopStateRecorder{}
+}
+
+// Describe does nothing.
+func (r *NopStateRecorder) Describe(_ chan<- *prometheus.Desc) {}
+
+// Collect does nothing.
+func (r *NopStateRecorder) Collect(_ chan<- prometheus.Metric) {}
+
+// Record does nothing.
+func (r *NopStateRecorder) Record(_ context.Context, _ schema.GroupVersionKind) {}
+
+// Run does nothing.
+func (r *NopStateRecorder) Run(_ context.Context, _ schema.GroupVersionKind) {}