/
link-controller.go
111 lines (85 loc) · 3.04 KB
/
link-controller.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
/*
* Copyright (C) 2023 Kendall Tauser
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package interfaces
import (
"context"
"time"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/util/wait"
clientset "k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/record"
"k8s.io/client-go/kubernetes/scheme"
v1core "k8s.io/client-go/kubernetes/typed/core/v1"
"k8s.io/client-go/tools/cache"
"k8s.io/client-go/util/workqueue"
)
type LinkController struct {
client clientset.Interface
eventRecorder record.EventRecorder
lListerSynched cache.InformerSynced
// Deployments that need to be synced
queue workqueue.RateLimitingInterface
// workerLoopPeriod is the time between worker runs. The workers process the queue of service and pod changes.
workerLoopPeriod time.Duration
}
// NewLinkConntroller creates a new LinkController
func NewLinkController(client clientset.Interface) (*LinkController, error) {
eventBroadcaster := record.NewBroadcaster()
eventBroadcaster.StartStructuredLogging(0)
eventBroadcaster.StartRecordingToSink(&v1core.EventSinkImpl{Interface: client.CoreV1().Events("")}) // Need to implement local clientset.
lc := &LinkController{
client: client,
eventRecorder: eventBroadcaster.NewRecorder(scheme.Scheme, v1.EventSource{Component: "link-controller"}),
queue: workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "link"),
}
return lc, nil
}
// Run starts off the number of worker threads as defined by workers.
// Each thread watches and syncs state of Link objects.
func (c *LinkController) Run(ctx context.Context, workers int) {
defer c.queue.ShutDown()
for i := 0; i < workers; i++ {
go wait.UntilWithContext(ctx, c.worker, c.workerLoopPeriod)
}
<-ctx.Done()
}
// Pops events off of the workqueues, processes them, and then marks
// them as done. Is thread safe due tothe worker queue implementation.
func (c *LinkController) worker(ctx context.Context) {
for c.processNextWorkItem(ctx) {
}
}
func (c *LinkController) processNextWorkItem(ctx context.Context) bool {
lkey, quit := c.queue.Get()
if quit {
return false
}
defer c.queue.Done(lkey)
c.syncLink(ctx, lkey.(string))
c.queue.Forget(lkey)
return true
}
func (c *LinkController) addLink() {
}
func (c *LinkController) delLink() {
}
func (c *LinkController) updateLink() {
}
func (c *LinkController) syncLink(ctx context.Context, key string) error {
return nil
}