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db.go
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db.go
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package database
import (
"database/sql"
"github.com/baetyl/baetyl-cloud/common"
"github.com/baetyl/baetyl-cloud/plugin"
"github.com/jmoiron/sqlx"
"time"
)
// dbStorage
type dbStorage struct {
db *sqlx.DB
cfg CloudConfig
}
func init() {
plugin.RegisterFactory("database", New)
}
// New New
func New() (plugin.Plugin, error) {
var cfg CloudConfig
if err := common.LoadConfig(&cfg); err != nil {
return nil, err
}
db, err := sqlx.Open(cfg.Database.Type, cfg.Database.URL)
if err != nil {
return nil, err
}
db.SetMaxIdleConns(cfg.Database.MaxIdleConns)
db.SetMaxOpenConns(cfg.Database.MaxConns)
db.SetConnMaxLifetime(time.Duration(cfg.Database.ConnMaxLifetime) * time.Second)
err = db.Ping()
if err != nil {
return nil, err
}
return &dbStorage{
db: db,
cfg: cfg,
}, nil
}
// Close Close
func (d *dbStorage) Close() error {
return d.db.Close()
}
func (d *dbStorage) Transact(handler func(*sqlx.Tx) error) (err error) {
tx, err := d.db.Beginx()
if err != nil {
return
}
defer func() {
if p := recover(); p != nil {
tx.Rollback()
panic(p)
} else if err != nil {
tx.Rollback()
} else {
err = tx.Commit()
}
}()
err = handler(tx)
return
}
func (d *dbStorage) exec(tx *sqlx.Tx, sql string, args ...interface{}) (sql.Result, error) {
if tx == nil {
return d.db.Exec(sql, args...)
}
return tx.Exec(sql, args...)
}
func (d *dbStorage) query(tx *sqlx.Tx, sql string, data interface{}, args ...interface{}) error {
if tx == nil {
return d.db.Select(data, sql, args...)
}
return tx.Select(data, sql, args...)
}