seaweedfs/weed/filer/mysql2/mysql2_store.go

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package mysql2
import (
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"context"
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"database/sql"
"fmt"
"time"
"github.com/chrislusf/seaweedfs/weed/filer"
"github.com/chrislusf/seaweedfs/weed/filer/abstract_sql"
"github.com/chrislusf/seaweedfs/weed/filer/mysql"
"github.com/chrislusf/seaweedfs/weed/util"
_ "github.com/go-sql-driver/mysql"
)
const (
CONNECTION_URL_PATTERN = "%s:%s@tcp(%s:%d)/%s?charset=utf8"
)
func init() {
filer.Stores = append(filer.Stores, &MysqlStore2{})
}
type MysqlStore2 struct {
abstract_sql.AbstractSqlStore
}
func (store *MysqlStore2) GetName() string {
return "mysql2"
}
func (store *MysqlStore2) Initialize(configuration util.Configuration, prefix string) (err error) {
return store.initialize(
configuration.GetString(prefix+"createTable"),
configuration.GetString(prefix+"upsertQuery"),
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configuration.GetBool(prefix+"enableUpsert"),
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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 *MysqlStore2) initialize(createTable, upsertQuery string, enableUpsert bool, user, password, hostname string, port int, database string, maxIdle, maxOpen,
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maxLifetimeSeconds int, interpolateParams bool) (err error) {
store.SupportBucketTable = true
if !enableUpsert {
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upsertQuery = ""
}
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store.SqlGenerator = &mysql.SqlGenMysql{
CreateTableSqlTemplate: createTable,
DropTableSqlTemplate: "drop table `%s`",
UpsertQueryTemplate: upsertQuery,
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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)
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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)
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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if err = store.CreateTable(context.Background(), abstract_sql.DEFAULT_TABLE); err != nil {
return fmt.Errorf("init table %s: %v", abstract_sql.DEFAULT_TABLE, err)
}
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return nil
}