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Code Issues Releases Activity

orm now can specify engine for mysql. add api SetMaxIdleConns/SetMaxOpenConns(go 1.2)

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This commit is contained in:
slene 2013-09-16 09:48:04 +08:00
parent 198d6320dd
commit a616087cde
5 changed files with 106 additions and 35 deletions
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20
orm/cmd_utils.go
View File

@ -12,17 +12,6 @@ type dbIndex struct {
Sql string
}
func getDbAlias(name string) *alias {
if al, ok := dataBaseCache.get(name); ok {
return al
} else {
fmt.Println(fmt.Sprintf("unknown DataBase alias name %s", name))
os.Exit(2)
}
return nil
}
func getDbDropSql(al *alias) (sqls []string) {
if len(modelCache.cache) == 0 {
fmt.Println("no Model found, need register your model")
@ -180,7 +169,14 @@ func getDbCreateSql(al *alias) (sqls []string, tableIndexes map[string][]dbIndex
sql += "\n)"
if al.Driver == DR_MySQL {
sql += " ENGINE=INNODB"
var engine string
if mi.model != nil {
engine = getTableEngine(mi.addrField)
}
if engine == "" {
engine = al.Engine
}
sql += " ENGINE=" + engine
}
sql += ";"

92
orm/db_alias.go
View File

@ -4,11 +4,13 @@ import (
"database/sql"
"fmt"
"os"
"reflect"
"sync"
"time"
)
const defaultMaxIdle = 30
const defaultMaxIdleConns = 30
const defaultMaxOpenConns = 50
type DriverType int
@ -76,26 +78,36 @@ func (ac *_dbCache) getDefault() (al *alias) {
}
type alias struct {
Name string
Driver DriverType
DriverName string
DataSource string
MaxIdle int
DB *sql.DB
DbBaser dbBaser
TZ *time.Location
Name string
Driver DriverType
DriverName string
DataSource string
MaxIdleConns int
MaxOpenConns int
DB *sql.DB
DbBaser dbBaser
TZ *time.Location
Engine string
}
func RegisterDataBase(name, driverName, dataSource string, maxIdle int) {
if maxIdle <= 0 {
maxIdle = defaultMaxIdle
// Setting the database connect params. Use the database driver self dataSource args.
func RegisterDataBase(aliasName, driverName, dataSource string, params ...int) {
maxIdleConns := defaultMaxIdleConns
maxOpenConns := defaultMaxOpenConns
for i, v := range params {
switch i {
case 0:
maxIdleConns = v
case 1:
maxOpenConns = v
}
}
al := new(alias)
al.Name = name
al.Name = aliasName
al.DriverName = driverName
al.DataSource = dataSource
al.MaxIdle = maxIdle
var (
err error
@ -109,19 +121,17 @@ func RegisterDataBase(name, driverName, dataSource string, maxIdle int) {
goto end
}
if dataBaseCache.add(name, al) == false {
err = fmt.Errorf("db name `%s` already registered, cannot reuse", name)
if dataBaseCache.add(aliasName, al) == false {
err = fmt.Errorf("db name `%s` already registered, cannot reuse", aliasName)
goto end
}
al.DB, err = sql.Open(driverName, dataSource)
if err != nil {
err = fmt.Errorf("register db `%s`, %s", name, err.Error())
err = fmt.Errorf("register db `%s`, %s", aliasName, err.Error())
goto end
}
al.DB.SetMaxIdleConns(al.MaxIdle)
// orm timezone system match database
// default use Local
al.TZ = time.Local
@ -137,8 +147,22 @@ func RegisterDataBase(name, driverName, dataSource string, maxIdle int) {
al.TZ = t.Location()
}
}
// get default engine from current database
row = al.DB.QueryRow("SELECT ENGINE, TRANSACTIONS FROM information_schema.engines WHERE SUPPORT = 'DEFAULT'")
var engine string
var tx bool
row.Scan(&engine, &tx)
if engine != "" {
al.Engine = engine
} else {
engine = "INNODB"
}
case DR_Sqlite:
al.TZ = time.UTC
case DR_Postgres:
row := al.DB.QueryRow("SELECT current_setting('TIMEZONE')")
var tz string
@ -149,9 +173,12 @@ func RegisterDataBase(name, driverName, dataSource string, maxIdle int) {
}
}
SetMaxIdleConns(al.Name, maxIdleConns)
SetMaxOpenConns(al.Name, maxOpenConns)
err = al.DB.Ping()
if err != nil {
err = fmt.Errorf("register db `%s`, %s", name, err.Error())
err = fmt.Errorf("register db `%s`, %s", aliasName, err.Error())
goto end
}
@ -162,6 +189,7 @@ end:
}
}
// Register a database driver use specify driver name, this can be definition the driver is which database type.
func RegisterDriver(driverName string, typ DriverType) {
if t, ok := drivers[driverName]; ok == false {
drivers[driverName] = typ
@ -173,11 +201,29 @@ func RegisterDriver(driverName string, typ DriverType) {
}
}
func SetDataBaseTZ(name string, tz *time.Location) {
if al, ok := dataBaseCache.get(name); ok {
// Change the database default used timezone
func SetDataBaseTZ(aliasName string, tz *time.Location) {
if al, ok := dataBaseCache.get(aliasName); ok {
al.TZ = tz
} else {
fmt.Sprintf("DataBase name `%s` not registered\n", name)
fmt.Sprintf("DataBase name `%s` not registered\n", aliasName)
os.Exit(2)
}
}
// Change the max idle conns for *sql.DB, use specify database alias name
func SetMaxIdleConns(aliasName string, maxIdleConns int) {
al := getDbAlias(aliasName)
al.MaxIdleConns = maxIdleConns
al.DB.SetMaxIdleConns(maxIdleConns)
}
// Change the max open conns for *sql.DB, use specify database alias name
func SetMaxOpenConns(aliasName string, maxOpenConns int) {
al := getDbAlias(aliasName)
al.MaxOpenConns = maxOpenConns
// for tip go 1.2
if fun := reflect.ValueOf(al.DB).MethodByName("SetMaxOpenConns"); fun.IsValid() {
fun.Call([]reflect.Value{reflect.ValueOf(maxOpenConns)})
}
}

9
orm/db_utils.go
View File

@ -6,6 +6,15 @@ import (
"time"
)
func getDbAlias(name string) *alias {
if al, ok := dataBaseCache.get(name); ok {
return al
} else {
panic(fmt.Errorf("unknown DataBase alias name %s", name))
}
return nil
}
func getExistPk(mi *modelInfo, ind reflect.Value) (column string, value interface{}, exist bool) {
fi := mi.fields.pk

6
orm/models_test.go
View File

@ -223,4 +223,10 @@ go test -v github.com/astaxie/beego/orm
}
RegisterDataBase("default", DBARGS.Driver, DBARGS.Source, 20)
alias := getDbAlias("default")
if alias.Driver == DR_MySQL {
alias.Engine = "INNODB"
}
}

14
orm/models_utils.go
View File

@ -26,6 +26,20 @@ func getTableName(val reflect.Value) string {
return snakeString(ind.Type().Name())
}
func getTableEngine(val reflect.Value) string {
fun := val.MethodByName("TableEngine")
if fun.IsValid() {
vals := fun.Call([]reflect.Value{})
if len(vals) > 0 {
val := vals[0]
if val.Kind() == reflect.String {
return val.String()
}
}
}
return ""
}
func getTableIndex(val reflect.Value) [][]string {
fun := val.MethodByName("TableIndex")
if fun.IsValid() {