-
Notifications
You must be signed in to change notification settings - Fork 315
/
driver.go
executable file
·170 lines (152 loc) · 3.84 KB
/
driver.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
package driver
import (
"sync"
"fmt"
"regexp"
"strings"
"log"
"encoding/json"
"time"
)
const API_VERSION = "v1.0"
func init(){}
type PluginDataType struct {
Timestamp uint32
EventType string
Rows []map[string]interface{}
Query string
SchemaName string
TableName string
BinlogFileNum int
BinlogPosition uint32
Pri []*string
}
func GetApiVersion() string{
return API_VERSION
}
type Driver interface {
Open(uri string) ConnFun
GetUriExample() string
CheckUri(uri string) error
}
type ConnFun interface {
GetConnStatus() string
SetConnStatus(status string)
Connect() bool
ReConnect() bool
HeartCheck()
Close() bool
Insert(data *PluginDataType) (*PluginBinlog,error) //状态,是否立马更新binlog,错误内容
Update(data *PluginDataType) (*PluginBinlog,error)
Del(data *PluginDataType) (*PluginBinlog,error)
Query(data *PluginDataType) (*PluginBinlog,error)
SetParam(p interface{})(interface{},error)
Commit() (*PluginBinlog,error)
}
type PluginBinlog struct {
BinlogFileNum int
BinlogPosition uint32
}
type ToPluginParam struct {
FromPluginBinlogChan chan PluginBinlog
}
type DriverStructure struct{
Version string // 插件版本
BifrostVersion string // 插件开发所使用的Bifrost的版本
Error string
ExampleConnUri string
driver Driver
}
var (
driversMu sync.RWMutex
drivers = make(map[string]DriverStructure)
)
func Register(name string, driver Driver,version string,bifrost_version string) {
defer func() {
if err := recover();err!=nil{
log.Println(err)
}
}()
driversMu.Lock()
defer driversMu.Unlock()
if driver == nil {
panic("Register driver is nil")
}
if _, ok := drivers[name]; ok {
panic("Register called twice for driver " + name)
}
drivers[name] = DriverStructure{
Version:version,
BifrostVersion:bifrost_version,
Error:"",
ExampleConnUri:driver.GetUriExample(),
driver:driver,
}
}
func Drivers() map[string]DriverStructure {
driversMu.RLock()
defer driversMu.RUnlock()
//json 一次是为了重新拷贝一个内存空间的map出来,防止外部新增修改
s,err :=json.Marshal(drivers)
if err != nil{
return make(map[string]DriverStructure,0)
}
var data map[string]DriverStructure
json.Unmarshal(s,&data)
return data
}
func Open(name string,uri string) ConnFun{
driversMu.RLock()
defer driversMu.RUnlock()
if _,ok := drivers[name];!ok{
return nil
}
return drivers[name].driver.Open(uri)
}
func CheckUri(name string,uri string) error{
driversMu.RLock()
defer driversMu.RUnlock()
if _,ok := drivers[name];!ok{
return fmt.Errorf("no "+name)
}
return drivers[name].driver.CheckUri(uri)
}
const RegularxEpression = `\{\$([a-zA-Z0-9\-\_]+)\}`
func TransfeResult(val string, data *PluginDataType,rowIndex int) string {
r, _ := regexp.Compile(RegularxEpression)
p := r.FindAllStringSubmatch(val, -1)
n := len(data.Rows) - 1
for _, v := range p {
switch v[1] {
case "TableName":
val = strings.Replace(val, "{$TableName}", data.TableName, -1)
break
case "SchemaName":
val = strings.Replace(val, "{$SchemaName}", data.SchemaName, -1)
break
case "EventType":
val = strings.Replace(val, "{$EventType}", data.EventType, -1)
break
case "Timestamp":
val = strings.Replace(val, "{$Timestamp}", fmt.Sprint(time.Now().Unix()), -1)
break
case "BinlogTimestamp":
val = strings.Replace(val, "{$BinlogTimestamp}", fmt.Sprint(data.Timestamp), -1)
break
case "BinlogFileNum":
val = strings.Replace(val, "{$BinlogFileNum}", fmt.Sprint(data.BinlogFileNum), -1)
break
case "BinlogPosition":
val = strings.Replace(val, "{$BinlogPosition}", fmt.Sprint(data.BinlogPosition), -1)
break
default:
if rowIndex <= n && rowIndex >= 0 {
val = strings.Replace(val, v[0], fmt.Sprint(data.Rows[rowIndex][v[1]]), -1)
}else{
val = strings.Replace(val, v[0], "nil", -1)
}
break
}
}
return val
}