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package mysql
import (
"fmt"
"database/sql"
"github.com/chrislusf/seaweedfs/weed/filer2"
"github.com/spf13/viper"
_ "github.com/go-sql-driver/mysql"
"github.com/chrislusf/seaweedfs/weed/filer2/abstract_sql"
)
const (
CONNECTION_URL_PATTERN = "%s:%s@tcp(%s:%d)/%s?charset=utf8"
)
func init() {
filer2.Stores = append(filer2.Stores, &MysqlStore{})
}
type MysqlStore struct {
abstract_sql.AbstractSqlStore
}
func (store *MysqlStore) GetName() string {
return "mysql"
}
func (store *MysqlStore) Initialize(viper *viper.Viper) (err error) {
return store.initialize(
viper.GetString("username"),
viper.GetString("password"),
viper.GetString("hostname"),
viper.GetInt("port"),
viper.GetString("database"),
viper.GetInt("connection_max_idle"),
viper.GetInt("connection_max_open"),
)
}
func (store *MysqlStore) initialize(user, password, hostname string, port int, database string, maxIdle, maxOpen int) (err error) {
store.SqlInsert = "INSERT INTO filemeta (dirhash,name,directory,meta) VALUES(?,?,?,?)"
store.SqlUpdate = "UPDATE filemeta SET meta=? WHERE dirhash=? AND name=? AND directory=?"
store.SqlFind = "SELECT meta FROM filemeta WHERE dirhash=? AND name=? AND directory=?"
store.SqlDelete = "DELETE FROM filemeta WHERE dirhash=? AND name=? AND directory=?"
store.SqlListExclusive = "SELECT NAME, meta FROM filemeta WHERE dirhash=? AND name>? AND directory=? LIMIT ?"
store.SqlListInclusive = "SELECT NAME, meta FROM filemeta WHERE dirhash=? AND name>=? AND directory=? LIMIT ?"
sqlUrl := fmt.Sprintf(CONNECTION_URL_PATTERN, user, password, hostname, port, database)
var dbErr error
store.DB, dbErr = sql.Open("mysql", sqlUrl)
if dbErr != nil {
store.DB.Close()
store.DB = nil
return fmt.Errorf("can not connect to %s error:%v", sqlUrl, err)
}
store.DB.SetMaxIdleConns(maxIdle)
store.DB.SetMaxOpenConns(maxOpen)
if err = store.DB.Ping(); err != nil {
return fmt.Errorf("connect to %s error:%v", sqlUrl, err)
}
return nil
}
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