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// Copyright 2018 The Operator-SDK 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 utils
import (
appsv1 "k8s.io/api/apps/v1"
"sigs.k8s.io/controller-runtime/pkg/event"
"sigs.k8s.io/controller-runtime/pkg/predicate"
logf "sigs.k8s.io/controller-runtime/pkg/runtime/log"
)
var plog = logf.Log.WithName("predicate").WithName("eventFilters")
// DaemonSetStatusChangedPredicate implements a default update predicate function on status change for Daemonsets
// (adapted from sigs.k8s.io/controller-runtime/pkg/predicate/predicate.GenerationChangedPredicate)
type DaemonSetStatusChangedPredicate struct {
predicate.Funcs
}
// Update implements default UpdateEvent filter for validating generation change
func (DaemonSetStatusChangedPredicate) Update(e event.UpdateEvent) bool {
newDS := e.ObjectNew.DeepCopyObject().(*appsv1.DaemonSet)
oldDS := e.ObjectOld.DeepCopyObject().(*appsv1.DaemonSet)
plog.V(2).Info("newDS", "nUNS:=", newDS.Status.UpdatedNumberScheduled, "oUNS:=", oldDS.Status.UpdatedNumberScheduled, "nDNS:=", newDS.Status.DesiredNumberScheduled, "nNR:=", newDS.Status.NumberReady, "nNA:=", newDS.Status.NumberAvailable)
if newDS.Status.UpdatedNumberScheduled >= oldDS.Status.UpdatedNumberScheduled {
if (newDS.Status.UpdatedNumberScheduled == newDS.Status.NumberReady) &&
(newDS.Status.UpdatedNumberScheduled == newDS.Status.NumberAvailable) {
return true
}
}
if e.MetaOld == nil {
plog.Error(nil, "Update event has no old metadata", "event", e)
return false
}
if e.ObjectOld == nil {
plog.Error(nil, "Update event has no old runtime object to update", "event", e)
return false
}
if e.ObjectNew == nil {
plog.Error(nil, "Update event has no new runtime object for update", "event", e)
return false
}
if e.MetaNew == nil {
plog.Error(nil, "Update event has no new metadata", "event", e)
return false
}
if e.MetaNew.GetGeneration() == e.MetaOld.GetGeneration() {
return false
}
return true
}
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