seaweedfs/weed/filer/mysql/mysql_store.go

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package mysql
import (
"database/sql"
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"fmt"
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"github.com/chrislusf/seaweedfs/weed/filer"
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"time"
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"github.com/chrislusf/seaweedfs/weed/filer/abstract_sql"
"github.com/chrislusf/seaweedfs/weed/util"
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_ "github.com/go-sql-driver/mysql"
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)
const (
CONNECTION_URL_PATTERN = "%s:%s@tcp(%s:%d)/%s?charset=utf8"
)
func init() {
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filer.Stores = append(filer.Stores, &MysqlStore{})
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}
type MysqlStore struct {
abstract_sql.AbstractSqlStore
}
func (store *MysqlStore) GetName() string {
return "mysql"
}
func (store *MysqlStore) Initialize(configuration util.Configuration, prefix string) (err error) {
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return store.initialize(
configuration.GetString(prefix+"username"),
configuration.GetString(prefix+"password"),
configuration.GetString(prefix+"hostname"),
configuration.GetInt(prefix+"port"),
configuration.GetString(prefix+"database"),
configuration.GetInt(prefix+"connection_max_idle"),
configuration.GetInt(prefix+"connection_max_open"),
configuration.GetInt(prefix+"connection_max_lifetime_seconds"),
configuration.GetBool(prefix+"interpolateParams"),
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)
}
func (store *MysqlStore) initialize(user, password, hostname string, port int, database string, maxIdle, maxOpen,
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maxLifetimeSeconds int, interpolateParams bool) (err error) {
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store.SupportBucketTable = false
store.SqlGenerator = &SqlGenMysql{
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CreateTableSqlTemplate: "",
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DropTableSqlTemplate: "drop table `%s`",
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}
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sqlUrl := fmt.Sprintf(CONNECTION_URL_PATTERN, user, password, hostname, port, database)
adaptedSqlUrl := fmt.Sprintf(CONNECTION_URL_PATTERN, user, "<ADAPTED>", hostname, port, database)
if interpolateParams {
sqlUrl += "&interpolateParams=true"
adaptedSqlUrl += "&interpolateParams=true"
}
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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", adaptedSqlUrl, err)
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}
store.DB.SetMaxIdleConns(maxIdle)
store.DB.SetMaxOpenConns(maxOpen)
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store.DB.SetConnMaxLifetime(time.Duration(maxLifetimeSeconds) * time.Second)
if err = store.DB.Ping(); err != nil {
return fmt.Errorf("connect to %s error:%v", sqlUrl, err)
}
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return nil
}