/
ccnp_event.go
143 lines (126 loc) · 4.62 KB
/
ccnp_event.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
// Copyright 2018-2020 Authors of Cilium
//
// 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 main
import (
"context"
"time"
operatorOption "github.com/cilium/cilium/operator/option"
"github.com/cilium/cilium/pkg/controller"
"github.com/cilium/cilium/pkg/k8s"
cilium_v2 "github.com/cilium/cilium/pkg/k8s/apis/cilium.io/v2"
"github.com/cilium/cilium/pkg/k8s/informer"
k8sversion "github.com/cilium/cilium/pkg/k8s/version"
"github.com/cilium/cilium/pkg/kvstore/store"
"github.com/cilium/cilium/pkg/metrics"
"github.com/cilium/cilium/pkg/policy/groups"
"k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/fields"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/tools/cache"
)
// enableCCNPWatcher is similar to enableCNPWatcher but handles the watch events for
// clusterwide policies. Since, internally Clusterwide policies are implemented
// using CiliumNetworkPolicy itself, the entire implementation uses the methods
// associcated with CiliumNetworkPolicy.
func enableCCNPWatcher() error {
log.Info("Starting to garbage collect stale CiliumClusterwideNetworkPolicy status field entries...")
var (
ccnpConverterFunc informer.ConvertFunc
ccnpStatusMgr *k8s.CCNPStatusEventHandler
)
ccnpStore := cache.NewStore(cache.DeletionHandlingMetaNamespaceKeyFunc)
switch {
case k8sversion.Capabilities().Patch:
// k8s >= 1.13 does not require a store to update CNP status so
// we don't even need to keep the status of a CNP with us.
ccnpConverterFunc = k8s.ConvertToCCNP
default:
ccnpConverterFunc = k8s.ConvertToCCNPWithStatus
}
if kvstoreEnabled() {
ccnpSharedStore, err := store.JoinSharedStore(store.Configuration{
Prefix: k8s.CCNPStatusesPath,
KeyCreator: func() store.Key {
return &k8s.CNPNSWithMeta{}
},
})
if err != nil {
return err
}
ccnpStatusMgr = k8s.NewCCNPStatusEventHandler(ccnpSharedStore, ccnpStore, operatorOption.Config.CNPStatusUpdateInterval)
go ccnpStatusMgr.WatchForCCNPStatusEvents()
}
ciliumV2Controller := informer.NewInformerWithStore(
cache.NewListWatchFromClient(k8s.CiliumClient().CiliumV2().RESTClient(),
"ciliumclusterwidenetworkpolicies", v1.NamespaceAll, fields.Everything()),
&cilium_v2.CiliumClusterwideNetworkPolicy{},
0,
cache.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
metrics.EventTSK8s.SetToCurrentTime()
if cnp := k8s.ObjToSlimCNP(obj); cnp != nil {
// We need to deepcopy this structure because we are writing
// fields.
// See https://github.com/cilium/cilium/blob/27fee207f5422c95479422162e9ea0d2f2b6c770/pkg/policy/api/ingress.go#L112-L134
cnpCpy := cnp.DeepCopy()
groups.AddDerivativeCNPIfNeeded(cnpCpy.CiliumNetworkPolicy)
if kvstoreEnabled() {
ccnpStatusMgr.StartStatusHandler(cnpCpy)
}
}
},
UpdateFunc: func(oldObj, newObj interface{}) {
metrics.EventTSK8s.SetToCurrentTime()
if oldCNP := k8s.ObjToSlimCNP(oldObj); oldCNP != nil {
if newCNP := k8s.ObjToSlimCNP(newObj); newCNP != nil {
if oldCNP.DeepEqual(newCNP) {
return
}
// We need to deepcopy this structure because we are writing
// fields.
// See https://github.com/cilium/cilium/blob/27fee207f5422c95479422162e9ea0d2f2b6c770/pkg/policy/api/ingress.go#L112-L134
newCNPCpy := newCNP.DeepCopy()
oldCNPCpy := oldCNP.DeepCopy()
groups.UpdateDerivativeCNPIfNeeded(newCNPCpy.CiliumNetworkPolicy, oldCNPCpy.CiliumNetworkPolicy)
}
}
},
DeleteFunc: func(obj interface{}) {
metrics.EventTSK8s.SetToCurrentTime()
cnp := k8s.ObjToSlimCNP(obj)
if cnp == nil {
return
}
// The derivative policy will be deleted by the parent but need
// to delete the cnp from the pooling.
groups.DeleteDerivativeFromCache(cnp.CiliumNetworkPolicy)
if kvstoreEnabled() {
ccnpStatusMgr.StopStatusHandler(cnp)
}
},
},
ccnpConverterFunc,
ccnpStore,
)
go ciliumV2Controller.Run(wait.NeverStop)
controller.NewManager().UpdateController("ccnp-to-groups",
controller.ControllerParams{
DoFunc: func(ctx context.Context) error {
groups.UpdateCNPInformation()
return nil
},
RunInterval: 5 * time.Minute,
})
return nil
}