/
mysql_global.go
80 lines (68 loc) · 1.51 KB
/
mysql_global.go
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package db
import (
"context"
"database/sql"
"sync"
)
var (
mysqlInstance *Mysql
mysqlConnOnce sync.Once
)
func MysqlInitByField(cfg *MysqlFieldConfig) {
MysqlInit(cfg.Convert())
}
func MysqlInit(cfg *MysqlConfig) {
mysqlConnOnce.Do(func() {
var err error
mysqlInstance, err = NewMysql(cfg)
if err != nil {
panic("init mysql: " + err.Error())
}
err = mysqlInstance.DB.Ping()
if err != nil {
panic("ping mysql: " + err.Error())
}
})
}
func getMysqlInstance() *Mysql {
if mysqlInstance == nil {
panic("mysql no init, please call MysqlInit first.")
}
return mysqlInstance
}
func SetupRawDB(db *sql.DB) {
var err error
mysqlInstance, err = NewMysql(nil, WithRawDB(db))
if err != nil {
panic("init mysql: " + err.Error())
}
}
type GetMySQLOption struct {
db *sql.DB
}
type GetMySQLOptionFunc func(*GetMySQLOption)
func WithDB(db *sql.DB) GetMySQLOptionFunc {
return func(opt *GetMySQLOption) {
opt.db = db
}
}
func GetMysql(opts ...GetMySQLOptionFunc) *Mysql {
getOption := &GetMySQLOption{}
for _, opt := range opts {
opt(getOption)
}
if getOption.db == nil {
return getMysqlInstance()
}
s, err := NewMysql(nil, WithRawDB(getOption.db))
if err != nil {
panic(err)
}
return s
}
func MysqlQuery(ctx context.Context, query string, args ...interface{}) (*sql.Rows, error) {
return getMysqlInstance().Query(query, args...)
}
func MysqlExec(ctx context.Context, query string, args ...interface{}) (sql.Result, error) {
return getMysqlInstance().ExecContext(ctx, query, args...)
}