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status.go
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status.go
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// Copyright 2023 The prometheus-operator 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 operator
import (
"context"
"time"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
monitoringv1 "github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring/v1"
)
type StatusReconciler interface {
Iterate(func(metav1.Object, []monitoringv1.Condition))
RefreshStatusFor(metav1.Object)
}
// StatusPoller refreshes regularly the objects for which the Available
// condition isn't True. It ensures that the status subresource eventually
// reflects the pods conditions.
// For instance when a new version of the statefulset is rolled out and the
// updated pod has non-ready containers, the statefulset status won't see
// any update because the number of ready/updated replicas doesn't change.
// Without the periodic refresh, the object's status would report "containers
// with incomplete status: [init-config-reloader]" forever.
func StatusPoller(ctx context.Context, sr StatusReconciler) {
ticker := time.NewTicker(1 * time.Minute)
defer ticker.Stop()
for {
select {
case <-ctx.Done():
return
case <-ticker.C:
sr.Iterate(func(meta metav1.Object, conditions []monitoringv1.Condition) {
for _, cond := range conditions {
if cond.Type == monitoringv1.Available && cond.Status != monitoringv1.ConditionTrue {
sr.RefreshStatusFor(meta)
break
}
}
})
}
}
}