-
Notifications
You must be signed in to change notification settings - Fork 0
/
db_pool.go
138 lines (132 loc) · 3.33 KB
/
db_pool.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
package frame
import (
"database/sql"
_ "github.com/go-sql-driver/mysql"
"runtime/debug"
"strconv"
"sync"
"time"
)
type dbGroup struct {
Master *sql.DB
Slaves []*sql.DB
Config *dbConfig
}
type dbConfig struct {
Host string
Port int
DbName string
}
type dbHost struct {
Type string `toml:"type"`
Master *dbHostConfig `toml:"master"`
Slaves []*dbHostConfig `toml:"slaves"`
}
type dbHostConfig struct {
Host string `toml:"host"`
Port int `toml:"port"`
Username string `toml:"username"`
Password string `toml:"password"`
DbName string `toml:"dbname"`
Charset string `toml:"charset"`
MaxOpenConn int `toml:"max_open_conns"`
MaxIdleConn int `toml:"max_idle_conns"`
ConnMaxLifeTime int `toml:"conns_max_lifetime"`
}
var dbGroupCache map[string]*dbGroup
var dbGroupCacheOnce sync.Once
var dbLock sync.Mutex
//获取数据库连接池
func openDB(dbGroups string) *dbGroup {
if dbGroupCache == nil {
dbGroupCacheOnce.Do(func() {
dbGroupCache = make(map[string]*dbGroup)
})
}
cache, ok := dbGroupCache[dbGroups]
if ok {
return cache
}
dbLock.Lock()
defer dbLock.Unlock()
dbHostConfig := &dbHost{}
err := App().Env(dbGroups, dbHostConfig)
if err != nil {
panic(DbError.Error() + ":" + err.Error())
}
dbType := dbHostConfig.Type
masterConfig := dbHostConfig.Master
dbDriver := masterConfig.Username + ":" +
masterConfig.Password + "@tcp(" +
masterConfig.Host + ":" +
strconv.Itoa(masterConfig.Port) + ")/" +
masterConfig.DbName + "?charset=" +
masterConfig.Charset
master, err := sql.Open(dbType, dbDriver)
if err != nil {
msg := map[string]interface{}{
"error": err.Error(),
"stack": string(debug.Stack()),
}
App().Log.Error(msg, LogMysqlError)
panic(DbError.Error() + ":" + dbGroups)
}
master.SetMaxOpenConns(masterConfig.MaxOpenConn)
master.SetMaxIdleConns(masterConfig.MaxIdleConn)
master.SetConnMaxLifetime(time.Duration(masterConfig.ConnMaxLifeTime) * time.Second)
slavesConfig := dbHostConfig.Slaves
slaves := make([]*sql.DB, 0)
for _, v := range slavesConfig {
bufferDriver := v.Username + ":" +
v.Password + "@tcp(" +
v.Host + ":" +
strconv.Itoa(v.Port) + ")/" +
v.DbName + "?charset=" +
v.Charset
slave, err := sql.Open(dbType, bufferDriver)
if err != nil {
msg := map[string]interface{}{
"error": err.Error(),
"stack": string(debug.Stack()),
}
App().Log.Error(msg, LogMysqlError)
panic(DbError.Error() + ":" + dbGroups)
}
slave.SetMaxOpenConns(v.MaxOpenConn)
slave.SetMaxIdleConns(v.MaxIdleConn)
slave.SetConnMaxLifetime(time.Duration(v.ConnMaxLifeTime) * time.Second)
slaves = append(slaves, slave)
}
config := &dbConfig{
Host: masterConfig.Host,
Port: masterConfig.Port,
DbName: masterConfig.DbName,
}
dbGroupCache[dbGroups] = &dbGroup{Master: master, Slaves: slaves, Config: config}
return dbGroupCache[dbGroups]
}
// 关闭数据库连接池
func closeDB(dbGroups ...string) {
if dbGroupCache == nil {
return
}
if len(dbGroups) > 0 {
for _, v := range dbGroups {
cache, ok := dbGroupCache[v]
if ok {
_ = cache.Master.Close()
for _, v := range cache.Slaves {
_ = v.Close()
}
}
}
} else {
for _, cache := range dbGroupCache {
_ = cache.Master.Close()
for _, v := range cache.Slaves {
_ = v.Close()
}
}
}
return
}