/
port_table_role.go
123 lines (108 loc) · 3.06 KB
/
port_table_role.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
/*
Copyright 2018 ZTE Corporation. All rights reserved.
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 portrole
import (
"github.com/ZTE/Knitter/knitter-agent/err-obj"
"github.com/ZTE/Knitter/knitter-agent/infra"
"github.com/ZTE/Knitter/pkg/klog"
"os"
"sync"
)
type PortTableRole struct {
// key: portId
// value: portName
portMap map[string]string
rwLock sync.RWMutex
dp infra.DataPersister
}
func (this *PortTableRole) Get(portID string) (string, error) {
this.rwLock.RLock()
defer this.rwLock.RUnlock()
portName, ok := this.portMap[portID]
if ok {
return portName, nil
}
return "", errobj.ErrRecordNtExist
}
func (this *PortTableRole) Load() error {
klog.Infof("attempt to load portTable.")
_, err := os.Stat(this.dp.GetFilePath())
if err != nil {
klog.Errorf("PortTableRole:Load, port table doesn't exist!, err: %v", err)
return errobj.ErrTblNtExist
}
err = this.dp.LoadFromMemFile(&this.portMap)
if err != nil {
klog.Errorf("PortTableRole:Load, restore port table failed!, err: %v", err)
return err
}
return nil
}
func (this *PortTableRole) Insert(portID, portName string) error {
this.rwLock.Lock()
defer this.rwLock.Unlock()
this.portMap[portID] = portName
err := this.dp.SaveToMemFile(this.portMap)
if err != nil {
klog.Errorf("PortTableRole:Insert, store to ram failed!")
return err
}
return nil
}
func (this *PortTableRole) Delete(portID string) error {
this.rwLock.Lock()
defer this.rwLock.Unlock()
delete(this.portMap, portID)
err := this.dp.SaveToMemFile(this.portMap)
if err != nil {
klog.Errorf("PortTableRole:delete, store to ram failed!")
return err
}
return nil
}
func (this *PortTableRole) IsExist(vethName string) bool {
this.rwLock.Lock()
defer this.rwLock.Unlock()
for _, value := range this.portMap {
if vethName == value {
klog.Infof("PortTableRole:IsExist: veth:%s exist in bridge br-int", vethName)
return true
}
}
return false
}
var portTableSingleton *PortTableRole
var br0PortTableSingletonLock sync.Mutex
func GetPortTableSingleton() *PortTableRole {
if portTableSingleton != nil {
return portTableSingleton
}
br0PortTableSingletonLock.Lock()
defer br0PortTableSingletonLock.Unlock()
if portTableSingleton == nil {
portTableSingleton = &PortTableRole{
make(map[string]string),
sync.RWMutex{},
infra.DataPersister{
DirName: "bridge",
FileName: "portTable.dat",
},
}
err := portTableSingleton.Load()
if err != nil && err.Error() != errobj.ErrTblNtExist.Error() {
klog.Errorf("GetPortTableSingleton: portTableSingleton.Load() error: %v", err)
return nil
}
}
return portTableSingleton
}