-
Notifications
You must be signed in to change notification settings - Fork 110
/
set_replicas_on_machine_deployment.go
executable file
·156 lines (126 loc) · 3.87 KB
/
set_replicas_on_machine_deployment.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
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
/*
Copyright 2021 Flant JSC
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 hooks
import (
"github.com/flant/addon-operator/pkg/module_manager/go_hook"
"github.com/flant/addon-operator/sdk"
"github.com/flant/shell-operator/pkg/kube_events_manager/types"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/utils/pointer"
"github.com/deckhouse/deckhouse/modules/040-node-manager/hooks/internal/mcm/v1alpha1"
ngv1 "github.com/deckhouse/deckhouse/modules/040-node-manager/hooks/internal/v1"
)
var _ = sdk.RegisterFunc(&go_hook.HookConfig{
Queue: "/modules/node-manager/set_replicas_on_machine_deployment",
Kubernetes: []go_hook.KubernetesConfig{
{
Name: "mds",
ApiVersion: "machine.sapcloud.io/v1alpha1",
Kind: "MachineDeployment",
WaitForSynchronization: pointer.BoolPtr(false),
NamespaceSelector: &types.NamespaceSelector{
NameSelector: &types.NameSelector{
MatchNames: []string{"d8-cloud-instance-manager"},
},
},
FilterFunc: setReplicasFilterMD,
},
{
Name: "ngs",
ApiVersion: "deckhouse.io/v1",
Kind: "NodeGroup",
WaitForSynchronization: pointer.BoolPtr(false),
FilterFunc: setReplicasFilterNG,
},
},
}, handleSetReplicas)
type setReplicasNodeGroup struct {
Name string
Min int32
Max int32
}
type setReplicasMachineDeployment struct {
Name string
NodeGroup string
Replicas int32
}
func setReplicasFilterNG(obj *unstructured.Unstructured) (go_hook.FilterResult, error) {
var ng ngv1.NodeGroup
err := sdk.FromUnstructured(obj, &ng)
if err != nil {
return nil, err
}
var min, max int32
if ng.Spec.CloudInstances.MinPerZone != nil {
min = *ng.Spec.CloudInstances.MinPerZone
}
if ng.Spec.CloudInstances.MaxPerZone != nil {
max = *ng.Spec.CloudInstances.MaxPerZone
}
return setReplicasNodeGroup{
Name: ng.Name,
Min: min,
Max: max,
}, nil
}
func setReplicasFilterMD(obj *unstructured.Unstructured) (go_hook.FilterResult, error) {
var md v1alpha1.MachineDeployment
err := sdk.FromUnstructured(obj, &md)
if err != nil {
return nil, err
}
return setReplicasMachineDeployment{
Name: md.Name,
NodeGroup: md.Labels["node-group"],
Replicas: md.Spec.Replicas,
}, nil
}
func handleSetReplicas(input *go_hook.HookInput) error {
nodeGroups := make(map[string]setReplicasNodeGroup)
snap := input.Snapshots["ngs"]
for _, sn := range snap {
ng := sn.(setReplicasNodeGroup)
nodeGroups[ng.Name] = ng
}
snap = input.Snapshots["mds"]
for _, sn := range snap {
md := sn.(setReplicasMachineDeployment)
ng, ok := nodeGroups[md.NodeGroup]
if !ok {
input.LogEntry.Warnf("can't find NodeGroup %s to get min and max instances per zone", md.NodeGroup)
continue
}
var desiredReplicas = md.Replicas
switch {
case ng.Min >= ng.Max:
desiredReplicas = ng.Max
case md.Replicas == 0:
desiredReplicas = ng.Min
case md.Replicas <= ng.Min:
desiredReplicas = ng.Min
case md.Replicas > ng.Max:
desiredReplicas = ng.Max
}
if desiredReplicas == md.Replicas {
// replicas not changed, we don't need to patch deployment
continue
}
patch := map[string]interface{}{
"spec": map[string]interface{}{
"replicas": desiredReplicas,
},
}
input.PatchCollector.MergePatch(patch, "machine.sapcloud.io/v1alpha1", "MachineDeployment", "d8-cloud-instance-manager", md.Name)
}
return nil
}