-
Notifications
You must be signed in to change notification settings - Fork 6
/
kube_multicluster_handler.go
158 lines (131 loc) · 4.99 KB
/
kube_multicluster_handler.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
157
158
package handler
import (
"fmt"
"sync"
"github.com/prometheus/client_golang/prometheus"
"github.com/symcn/meshach/pkg/adapter/component"
"github.com/symcn/meshach/pkg/adapter/convert"
"github.com/symcn/meshach/pkg/adapter/metrics"
types2 "github.com/symcn/meshach/pkg/adapter/types"
k8smanager "github.com/symcn/meshach/pkg/k8s/manager"
"k8s.io/klog"
)
// KubeMultiClusterEventHandler it used for synchronizing the component which has been send by the adapter client
// to a kubernetes cluster which has an istio controller there.
// It usually uses a CRD group to depict both registered services and instances.
type KubeMultiClusterEventHandler struct {
handlers []component.EventHandler
}
// NewKubeMultiClusterEventHandler ...
func NewKubeMultiClusterEventHandler(clustersMgr *k8smanager.ClusterManager) (component.EventHandler, error) {
converter := &convert.DubboConverter{DefaultNamespace: defaultNamespace}
var kubeHandlers []component.EventHandler
for _, c := range clustersMgr.GetAll() {
h, err := NewKubeSingleClusterEventHandler(c.Mgr, converter)
if err != nil {
return nil, fmt.Errorf("initializing kube handler with a manager failed: %v", err)
}
kubeHandlers = append(kubeHandlers, h)
}
return &KubeMultiClusterEventHandler{
handlers: kubeHandlers,
}, nil
}
// AddService ...
func (h *KubeMultiClusterEventHandler) AddService(event *types2.ServiceEvent) {
// klog.Infof("Kube multiple clusters event handler: Adding a service: %s", event.Service.Name)
klog.V(6).Infof("Adding a service has not been implemented yet by multiple clusters handler.")
// kubeMceh .ReplaceInstances(event, configuratorFinder)
}
// AddInstance ...
func (h *KubeMultiClusterEventHandler) AddInstance(event *types2.ServiceEvent) {
klog.V(6).Infof("Adding an instance has not been implemented yet by multiple clusters handler.")
}
// ReplaceInstances ...
func (h *KubeMultiClusterEventHandler) ReplaceInstances(event *types2.ServiceEvent) {
klog.V(6).Infof("event handler for multiple clusters: Replacing these instances(size: %d)", len(event.Instances))
metrics.SynchronizedServiceCounter.Inc()
metrics.SynchronizedInstanceCounter.Add(float64(len(event.Instances)))
timer := prometheus.NewTimer(metrics.ReplacingInstancesHistogram)
defer timer.ObserveDuration()
wg := sync.WaitGroup{}
wg.Add(len(h.handlers))
for _, h := range h.handlers {
go func(handler component.EventHandler) {
defer wg.Done()
handler.ReplaceInstances(event)
}(h)
}
wg.Wait()
}
// DeleteService we assume we need to remove the service Spec part of AppMeshConfig
// after received a service deleted notification.
func (h *KubeMultiClusterEventHandler) DeleteService(event *types2.ServiceEvent) {
klog.V(6).Infof("event handler for multiple clusters: Deleting a service: %v", event.Service)
metrics.DeletedServiceCounter.Inc()
wg := sync.WaitGroup{}
wg.Add(len(h.handlers))
for _, h := range h.handlers {
go func(handler component.EventHandler) {
defer wg.Done()
handler.DeleteService(event)
}(h)
}
wg.Wait()
}
// DeleteInstance ...
func (h *KubeMultiClusterEventHandler) DeleteInstance(event *types2.ServiceEvent) {
klog.V(6).Infof("Deleting an instance has not been implemented yet by multiple clusters handler.")
}
// ReplaceAccessorInstances ...
func (h *KubeMultiClusterEventHandler) ReplaceAccessorInstances(
event *types2.ServiceEvent,
getScopedServices func(s string) map[string]struct{}) {
klog.V(6).Infof("event handler for multiple clusters: Replacing these instances(size: %d)", len(event.Instances))
wg := sync.WaitGroup{}
wg.Add(len(h.handlers))
for _, h := range h.handlers {
go func(handler component.EventHandler) {
defer wg.Done()
handler.ReplaceAccessorInstances(event, getScopedServices)
}(h)
}
wg.Wait()
}
// AddConfigEntry ...
func (h *KubeMultiClusterEventHandler) AddConfigEntry(e *types2.ConfigEvent) {
klog.V(6).Infof("event handler for multiple clusters: adding a configuration: %s", e.Path)
metrics.AddedConfigurationCounter.Inc()
// Adding a new configuration for a service is same as changing it.
h.ChangeConfigEntry(e)
}
// ChangeConfigEntry ...
func (h *KubeMultiClusterEventHandler) ChangeConfigEntry(e *types2.ConfigEvent) {
klog.V(6).Infof("event handler for multiple clusters: changing a configuration: %s", e.Path)
metrics.ChangedConfigurationCounter.Inc()
timer := prometheus.NewTimer(metrics.ChangingConfigurationHistogram)
defer timer.ObserveDuration()
wg := sync.WaitGroup{}
wg.Add(len(h.handlers))
for _, h := range h.handlers {
go func(handler component.EventHandler) {
defer wg.Done()
handler.ChangeConfigEntry(e)
}(h)
}
wg.Wait()
}
// DeleteConfigEntry ...
func (h *KubeMultiClusterEventHandler) DeleteConfigEntry(e *types2.ConfigEvent) {
klog.V(6).Infof("event handler for multiple clusters: deleting a configuration %s", e.Path)
metrics.DeletedConfigurationCounter.Inc()
wg := sync.WaitGroup{}
wg.Add(len(h.handlers))
for _, h := range h.handlers {
go func(handler component.EventHandler) {
defer wg.Done()
handler.DeleteConfigEntry(e)
}(h)
}
wg.Wait()
}