This repository has been archived by the owner on Apr 25, 2023. It is now read-only.
/
namespace.go
69 lines (58 loc) · 2.3 KB
/
namespace.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
/*
Copyright 2018 The Kubernetes 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 placement
import (
"github.com/kubernetes-sigs/federation-v2/pkg/controller/util"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
pkgruntime "k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/client-go/tools/cache"
)
type NamespacePlacementPlugin struct {
// Store for the placement directives of the federated type
store cache.Store
// Informer controller for placement directives of the federated type
controller cache.Controller
}
func NewNamespacePlacementPlugin(client util.ResourceClient, targetNamespace string, triggerFunc func(pkgruntime.Object)) PlacementPlugin {
store, controller := util.NewResourceInformer(client, targetNamespace, triggerFunc)
return &NamespacePlacementPlugin{
store: store,
controller: controller,
}
}
func (p *NamespacePlacementPlugin) Run(stopCh <-chan struct{}) {
p.controller.Run(stopCh)
}
func (p *NamespacePlacementPlugin) HasSynced() bool {
return p.controller.HasSynced()
}
func (p *NamespacePlacementPlugin) ComputePlacement(qualifiedName util.QualifiedName, clusterNames []string) (selectedClusters, unselectedClusters []string, err error) {
key := qualifiedName.String()
cachedObj, _, err := p.store.GetByKey(key)
if err != nil {
return nil, nil, err
}
if cachedObj == nil {
// TODO(marun) Compute placement from the placement decisions of contained resources
return clusterNames, []string{}, nil
}
unstructuredObj := cachedObj.(*unstructured.Unstructured)
selectedNames, err := util.GetClusterNames(unstructuredObj)
if err != nil {
return nil, nil, err
}
clusterSet := sets.NewString(clusterNames...)
selectedSet := sets.NewString(selectedNames...)
return clusterSet.Intersection(selectedSet).List(), clusterSet.Difference(selectedSet).List(), nil
}