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Merge pull request #74 from arangodb/watch-more-resources
Also watch changes in PVCs and Services
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,155 @@ | ||
| // | ||
| // DISCLAIMER | ||
| // | ||
| // Copyright 2018 ArangoDB GmbH, Cologne, Germany | ||
| // | ||
| // 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. | ||
| // | ||
| // Copyright holder is ArangoDB GmbH, Cologne, Germany | ||
| // | ||
| // Author Ewout Prangsma | ||
| // | ||
|
|
||
| package deployment | ||
|
|
||
| import ( | ||
| "k8s.io/api/core/v1" | ||
| "k8s.io/apimachinery/pkg/fields" | ||
| "k8s.io/client-go/tools/cache" | ||
| ) | ||
|
|
||
| // listenForPodEvents keep listening for changes in pod until the given channel is closed. | ||
| func (d *Deployment) listenForPodEvents(stopCh <-chan struct{}) { | ||
| source := cache.NewListWatchFromClient( | ||
| d.deps.KubeCli.CoreV1().RESTClient(), | ||
| "pods", | ||
| d.apiObject.GetNamespace(), | ||
| fields.Everything()) | ||
|
|
||
| getPod := func(obj interface{}) (*v1.Pod, bool) { | ||
| pod, ok := obj.(*v1.Pod) | ||
| if !ok { | ||
| tombstone, ok := obj.(cache.DeletedFinalStateUnknown) | ||
| if !ok { | ||
| return nil, false | ||
| } | ||
| pod, ok = tombstone.Obj.(*v1.Pod) | ||
| return pod, ok | ||
| } | ||
| return pod, true | ||
| } | ||
|
|
||
| _, informer := cache.NewIndexerInformer(source, &v1.Pod{}, 0, cache.ResourceEventHandlerFuncs{ | ||
| AddFunc: func(obj interface{}) { | ||
| if p, ok := getPod(obj); ok && d.isOwnerOf(p) { | ||
| d.triggerInspection() | ||
| } | ||
| }, | ||
| UpdateFunc: func(oldObj, newObj interface{}) { | ||
| if p, ok := getPod(newObj); ok && d.isOwnerOf(p) { | ||
| d.triggerInspection() | ||
| } | ||
| }, | ||
| DeleteFunc: func(obj interface{}) { | ||
| if p, ok := getPod(obj); ok && d.isOwnerOf(p) { | ||
| d.triggerInspection() | ||
| } | ||
| }, | ||
| }, cache.Indexers{}) | ||
|
|
||
| informer.Run(stopCh) | ||
| } | ||
|
|
||
| // listenForPVCEvents keep listening for changes in PVC's until the given channel is closed. | ||
| func (d *Deployment) listenForPVCEvents(stopCh <-chan struct{}) { | ||
| source := cache.NewListWatchFromClient( | ||
| d.deps.KubeCli.CoreV1().RESTClient(), | ||
| "persistentvolumeclaims", | ||
| d.apiObject.GetNamespace(), | ||
| fields.Everything()) | ||
|
|
||
| getPVC := func(obj interface{}) (*v1.PersistentVolumeClaim, bool) { | ||
| pvc, ok := obj.(*v1.PersistentVolumeClaim) | ||
| if !ok { | ||
| tombstone, ok := obj.(cache.DeletedFinalStateUnknown) | ||
| if !ok { | ||
| return nil, false | ||
| } | ||
| pvc, ok = tombstone.Obj.(*v1.PersistentVolumeClaim) | ||
| return pvc, ok | ||
| } | ||
| return pvc, true | ||
| } | ||
|
|
||
| _, informer := cache.NewIndexerInformer(source, &v1.PersistentVolumeClaim{}, 0, cache.ResourceEventHandlerFuncs{ | ||
| AddFunc: func(obj interface{}) { | ||
| if p, ok := getPVC(obj); ok && d.isOwnerOf(p) { | ||
| d.triggerInspection() | ||
| } | ||
| }, | ||
| UpdateFunc: func(oldObj, newObj interface{}) { | ||
| if p, ok := getPVC(newObj); ok && d.isOwnerOf(p) { | ||
| d.triggerInspection() | ||
| } | ||
| }, | ||
| DeleteFunc: func(obj interface{}) { | ||
| if p, ok := getPVC(obj); ok && d.isOwnerOf(p) { | ||
| d.triggerInspection() | ||
| } | ||
| }, | ||
| }, cache.Indexers{}) | ||
|
|
||
| informer.Run(stopCh) | ||
| } | ||
|
|
||
| // listenForServiceEvents keep listening for changes in Service's until the given channel is closed. | ||
| func (d *Deployment) listenForServiceEvents(stopCh <-chan struct{}) { | ||
| source := cache.NewListWatchFromClient( | ||
| d.deps.KubeCli.CoreV1().RESTClient(), | ||
| "services", | ||
| d.apiObject.GetNamespace(), | ||
| fields.Everything()) | ||
|
|
||
| getService := func(obj interface{}) (*v1.Service, bool) { | ||
| service, ok := obj.(*v1.Service) | ||
| if !ok { | ||
| tombstone, ok := obj.(cache.DeletedFinalStateUnknown) | ||
| if !ok { | ||
| return nil, false | ||
| } | ||
| service, ok = tombstone.Obj.(*v1.Service) | ||
| return service, ok | ||
| } | ||
| return service, true | ||
| } | ||
|
|
||
| _, informer := cache.NewIndexerInformer(source, &v1.Service{}, 0, cache.ResourceEventHandlerFuncs{ | ||
| AddFunc: func(obj interface{}) { | ||
| if s, ok := getService(obj); ok && d.isOwnerOf(s) { | ||
| d.triggerInspection() | ||
| } | ||
| }, | ||
| UpdateFunc: func(oldObj, newObj interface{}) { | ||
| if s, ok := getService(newObj); ok && d.isOwnerOf(s) { | ||
| d.triggerInspection() | ||
| } | ||
| }, | ||
| DeleteFunc: func(obj interface{}) { | ||
| if s, ok := getService(obj); ok && d.isOwnerOf(s) { | ||
| d.triggerInspection() | ||
| } | ||
| }, | ||
| }, cache.Indexers{}) | ||
|
|
||
| informer.Run(stopCh) | ||
| } |
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