forked from pingcap/tidb-operator
/
service_control.go
190 lines (164 loc) · 6.57 KB
/
service_control.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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
// Copyright 2018 PingCAP, Inc.
//
// 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,
// See the License for the specific language governing permissions and
// limitations under the License.
package controller
import (
"fmt"
"strings"
"github.com/golang/glog"
"github.com/pingcap/tidb-operator/pkg/apis/pingcap.com/v1alpha1"
tcinformers "github.com/pingcap/tidb-operator/pkg/client/informers/externalversions/pingcap.com/v1alpha1"
v1listers "github.com/pingcap/tidb-operator/pkg/client/listers/pingcap.com/v1alpha1"
corev1 "k8s.io/api/core/v1"
apierrors "k8s.io/apimachinery/pkg/api/errors"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
coreinformers "k8s.io/client-go/informers/core/v1"
"k8s.io/client-go/kubernetes"
corelisters "k8s.io/client-go/listers/core/v1"
"k8s.io/client-go/tools/cache"
"k8s.io/client-go/tools/record"
"k8s.io/client-go/util/retry"
)
// ExternalTrafficPolicy denotes if this Service desires to route external traffic to node-local or cluster-wide endpoints.
var ExternalTrafficPolicy string
// ServiceControlInterface manages Services used in TidbCluster
type ServiceControlInterface interface {
CreateService(*v1alpha1.TidbCluster, *corev1.Service) error
UpdateService(*v1alpha1.TidbCluster, *corev1.Service) (*corev1.Service, error)
DeleteService(*v1alpha1.TidbCluster, *corev1.Service) error
}
type realServiceControl struct {
kubeCli kubernetes.Interface
svcLister corelisters.ServiceLister
recorder record.EventRecorder
}
// NewRealServiceControl creates a new ServiceControlInterface
func NewRealServiceControl(kubeCli kubernetes.Interface, svcLister corelisters.ServiceLister, recorder record.EventRecorder) ServiceControlInterface {
return &realServiceControl{
kubeCli,
svcLister,
recorder,
}
}
func (sc *realServiceControl) CreateService(tc *v1alpha1.TidbCluster, svc *corev1.Service) error {
_, err := sc.kubeCli.CoreV1().Services(tc.Namespace).Create(svc)
if apierrors.IsAlreadyExists(err) {
return err
}
sc.recordServiceEvent("create", tc, svc, err)
return err
}
func (sc *realServiceControl) UpdateService(tc *v1alpha1.TidbCluster, svc *corev1.Service) (*corev1.Service, error) {
ns := tc.GetNamespace()
tcName := tc.GetName()
svcName := svc.GetName()
svcSpec := svc.Spec.DeepCopy()
var updateSvc *corev1.Service
err := retry.RetryOnConflict(retry.DefaultBackoff, func() error {
var updateErr error
updateSvc, updateErr = sc.kubeCli.CoreV1().Services(ns).Update(svc)
if updateErr == nil {
glog.Infof("update Service: [%s/%s] successfully, TidbCluster: %s", ns, svcName, tcName)
return nil
}
if updated, err := sc.svcLister.Services(tc.Namespace).Get(svcName); err != nil {
svc = updated.DeepCopy()
svc.Spec = *svcSpec
} else {
utilruntime.HandleError(fmt.Errorf("error getting updated Service %s/%s from lister: %v", ns, svcName, err))
}
return updateErr
})
sc.recordServiceEvent("update", tc, svc, err)
return updateSvc, err
}
func (sc *realServiceControl) DeleteService(tc *v1alpha1.TidbCluster, svc *corev1.Service) error {
err := sc.kubeCli.CoreV1().Services(tc.Namespace).Delete(svc.Name, nil)
sc.recordServiceEvent("delete", tc, svc, err)
return err
}
func (sc *realServiceControl) recordServiceEvent(verb string, tc *v1alpha1.TidbCluster, svc *corev1.Service, err error) {
tcName := tc.Name
svcName := svc.Name
if err == nil {
reason := fmt.Sprintf("Successful%s", strings.Title(verb))
msg := fmt.Sprintf("%s Service %s in TidbCluster %s successful",
strings.ToLower(verb), svcName, tcName)
sc.recorder.Event(tc, corev1.EventTypeNormal, reason, msg)
} else {
reason := fmt.Sprintf("Failed%s", strings.Title(verb))
msg := fmt.Sprintf("%s Service %s in TidbCluster %s failed error: %s",
strings.ToLower(verb), svcName, tcName, err)
sc.recorder.Event(tc, corev1.EventTypeWarning, reason, msg)
}
}
var _ ServiceControlInterface = &realServiceControl{}
// FakeServiceControl is a fake ServiceControlInterface
type FakeServiceControl struct {
SvcLister corelisters.ServiceLister
SvcIndexer cache.Indexer
TcLister v1listers.TidbClusterLister
TcIndexer cache.Indexer
createServiceTracker requestTracker
updateServiceTracker requestTracker
deleteStatefulSetTracker requestTracker
}
// NewFakeServiceControl returns a FakeServiceControl
func NewFakeServiceControl(svcInformer coreinformers.ServiceInformer, tcInformer tcinformers.TidbClusterInformer) *FakeServiceControl {
return &FakeServiceControl{
svcInformer.Lister(),
svcInformer.Informer().GetIndexer(),
tcInformer.Lister(),
tcInformer.Informer().GetIndexer(),
requestTracker{0, nil, 0},
requestTracker{0, nil, 0},
requestTracker{0, nil, 0},
}
}
// SetCreateServiceError sets the error attributes of createServiceTracker
func (ssc *FakeServiceControl) SetCreateServiceError(err error, after int) {
ssc.createServiceTracker.err = err
ssc.createServiceTracker.after = after
}
// SetUpdateServiceError sets the error attributes of updateServiceTracker
func (ssc *FakeServiceControl) SetUpdateServiceError(err error, after int) {
ssc.updateServiceTracker.err = err
ssc.updateServiceTracker.after = after
}
// SetDeleteServiceError sets the error attributes of deleteServiceTracker
func (ssc *FakeServiceControl) SetDeleteServiceError(err error, after int) {
ssc.deleteStatefulSetTracker.err = err
ssc.deleteStatefulSetTracker.after = after
}
// CreateService adds the service to SvcIndexer
func (ssc *FakeServiceControl) CreateService(_ *v1alpha1.TidbCluster, svc *corev1.Service) error {
defer ssc.createServiceTracker.inc()
if ssc.createServiceTracker.errorReady() {
defer ssc.createServiceTracker.reset()
return ssc.createServiceTracker.err
}
return ssc.SvcIndexer.Add(svc)
}
// UpdateService updates the service of SvcIndexer
func (ssc *FakeServiceControl) UpdateService(_ *v1alpha1.TidbCluster, svc *corev1.Service) (*corev1.Service, error) {
defer ssc.updateServiceTracker.inc()
if ssc.updateServiceTracker.errorReady() {
defer ssc.updateServiceTracker.reset()
return nil, ssc.updateServiceTracker.err
}
return svc, ssc.SvcIndexer.Update(svc)
}
// DeleteService deletes the service of SvcIndexer
func (ssc *FakeServiceControl) DeleteService(_ *v1alpha1.TidbCluster, _ *corev1.Service) error {
return nil
}
var _ ServiceControlInterface = &FakeServiceControl{}