/
downstream.go
124 lines (107 loc) · 3.56 KB
/
downstream.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
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
/*
* Copyright 2020 The Multicluster-Scheduler 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 resources
import (
"context"
"fmt"
"reflect"
"time"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/errors"
v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
coreinformers "k8s.io/client-go/informers/core/v1"
corelisters "k8s.io/client-go/listers/core/v1"
"admiralty.io/multicluster-scheduler/pkg/apis/multicluster/v1alpha1"
"admiralty.io/multicluster-scheduler/pkg/common"
"admiralty.io/multicluster-scheduler/pkg/controller"
clientset "admiralty.io/multicluster-scheduler/pkg/generated/clientset/versioned"
)
type downstream struct {
customclientset clientset.Interface
nodeLister corelisters.NodeLister
}
const key = "key"
const singletonName = "singleton"
func NewDownstreamController(customclientset clientset.Interface,
nodeInformer coreinformers.NodeInformer) *controller.Controller {
r := &downstream{
customclientset: customclientset,
nodeLister: nodeInformer.Lister(),
}
c := controller.New("cluster-resources-downstream", r, nodeInformer.Informer().HasSynced)
nodeInformer.Informer().AddEventHandler(controller.HandleAllWith(func(obj interface{}) {
node := obj.(*corev1.Node)
if node.Labels[common.LabelAndTaintKeyVirtualKubeletProvider] != common.VirtualKubeletProviderName {
c.EnqueueKey(key)
}
}))
return c
}
func (r downstream) Handle(_ interface{}) (requeueAfter *time.Duration, err error) {
ctx := context.Background()
capacity := corev1.ResourceList{}
allocatable := corev1.ResourceList{}
sel, err := labels.Parse(fmt.Sprintf("%s!=%s", common.LabelAndTaintKeyVirtualKubeletProvider, common.VirtualKubeletProviderName))
utilruntime.Must(err)
nodes, err := r.nodeLister.List(sel)
if err != nil {
return nil, err
}
for _, node := range nodes {
for res, qty := range node.Status.Capacity {
if val, ok := capacity[res]; ok {
val.Add(qty)
capacity[res] = val
} else {
capacity[res] = qty
}
}
for res, qty := range node.Status.Allocatable {
if val, ok := allocatable[res]; ok {
val.Add(qty)
allocatable[res] = val
} else {
allocatable[res] = qty
}
}
}
actual, err := r.customclientset.MulticlusterV1alpha1().ClusterSummaries().Get(ctx, singletonName, v1.GetOptions{})
if err != nil {
if errors.IsNotFound(err) {
gold := &v1alpha1.ClusterSummary{
Allocatable: allocatable,
Capacity: capacity,
}
gold.Name = singletonName
actual, err = r.customclientset.MulticlusterV1alpha1().ClusterSummaries().Create(ctx, gold, v1.CreateOptions{})
if err != nil {
return nil, err
}
}
}
if !reflect.DeepEqual(capacity, actual.Capacity) || !reflect.DeepEqual(allocatable, actual.Allocatable) {
actualCopy := actual.DeepCopy()
actualCopy.Allocatable = allocatable
actualCopy.Capacity = capacity
actual, err = r.customclientset.MulticlusterV1alpha1().ClusterSummaries().Update(ctx, actualCopy, v1.UpdateOptions{})
if err != nil {
return nil, err
}
}
return nil, nil
}