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Merge pull request #494 from crossplane/renovate/golang-1.x
Update dependency golang to v1.20.7
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| /* | ||
| Copyright 2023 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 managed | ||
|
|
||
| import ( | ||
| "context" | ||
| "sync" | ||
| "time" | ||
|
|
||
| "github.com/prometheus/client_golang/prometheus" | ||
| "k8s.io/apimachinery/pkg/runtime/schema" | ||
| "k8s.io/client-go/tools/cache" | ||
| kmetrics "k8s.io/component-base/metrics" | ||
| "sigs.k8s.io/controller-runtime/pkg/cluster" | ||
| "sigs.k8s.io/controller-runtime/pkg/manager" | ||
| "sigs.k8s.io/controller-runtime/pkg/metrics" | ||
|
|
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| "github.com/crossplane/crossplane-runtime/pkg/resource" | ||
| ) | ||
|
|
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| func init() { | ||
| metrics.Registry.MustRegister(drift) | ||
| } | ||
|
|
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| var subSystem = "crossplane" | ||
|
|
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| var ( | ||
| drift = prometheus.NewHistogramVec(prometheus.HistogramOpts{ | ||
| Subsystem: subSystem, | ||
| Name: "resource_drift_seconds", | ||
| Help: "ALPHA: How long since the previous reconcile when a resource was found to be out of sync; excludes restart of the provider", | ||
| Buckets: kmetrics.ExponentialBuckets(10e-9, 10, 10), | ||
| }, []string{"group", "kind"}) | ||
| ) | ||
|
|
||
| // driftRecorder records the time since the last observation of a resource | ||
| // and records the time since on update as a metric. This represents an upper | ||
| // bound for the duration the drift existed. | ||
| type driftRecorder struct { | ||
| lastObservation sync.Map | ||
| gvk schema.GroupVersionKind | ||
|
|
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| cluster cluster.Cluster | ||
| } | ||
|
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| var _ manager.Runnable = &driftRecorder{} | ||
|
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| func (r *driftRecorder) Start(ctx context.Context) error { | ||
| inf, err := r.cluster.GetCache().GetInformerForKind(ctx, r.gvk) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
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| registered, err := inf.AddEventHandler(cache.ResourceEventHandlerFuncs{ | ||
| DeleteFunc: func(obj interface{}) { | ||
| if final, ok := obj.(cache.DeletedFinalStateUnknown); ok { | ||
| obj = final.Obj | ||
| } | ||
| managed := obj.(resource.Managed) | ||
| r.lastObservation.Delete(managed.GetName()) | ||
| }, | ||
| }) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer inf.RemoveEventHandler(registered) //nolint:errcheck // this happens on destruction. We cannot do anything anyway. | ||
|
|
||
| <-ctx.Done() | ||
|
|
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| return nil | ||
| } | ||
|
|
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| func (r *driftRecorder) recordUnchanged(name string) { | ||
| r.lastObservation.Store(name, time.Now()) | ||
| } | ||
|
|
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| func (r *driftRecorder) recordUpdate(name string) { | ||
| last, ok := r.lastObservation.Load(name) | ||
| if !ok { | ||
| return | ||
| } | ||
|
|
||
| drift.WithLabelValues(r.gvk.Group, r.gvk.Kind).Observe(time.Since(last.(time.Time)).Seconds()) | ||
| } |
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