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database.go
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database.go
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package database
import (
"fmt"
"strings"
"github.com/jinzhu/gorm"
"github.com/rs/zerolog/log"
"github.com/xmlking/micro-starter-kit/shared/logger/gormlog"
configPB "github.com/xmlking/micro-starter-kit/shared/proto/config"
)
// GetDatabaseConnection return (gorm.DB or error)
func GetDatabaseConnection(dbConf configPB.DatabaseConfiguration) (db *gorm.DB, err error) {
var timezoneCommand string
switch dbConf.Dialect {
case configPB.DatabaseDialect_SQLite3:
db, err = connection(dbConf)
case configPB.DatabaseDialect_Postgre:
timezoneCommand = "SET timezone = 'UTC'"
db, err = connection(dbConf)
case configPB.DatabaseDialect_MySQL:
timezoneCommand = "SET time_zone = '+00:00'"
db, err = connection(dbConf)
default:
return nil, fmt.Errorf("database dialect %s not supported", dbConf.Dialect)
}
if err != nil {
return
}
gLogger := log.With().
Str("module", "gorm").
Logger()
db.SetLogger(gormlog.NewGormLogger(gLogger))
if dbConf.Logging {
db.Debug()
}
db.LogMode(dbConf.Logging)
db.SingularTable(dbConf.Singularize)
db.DB().SetMaxOpenConns(int(dbConf.MaxOpenConns))
db.DB().SetMaxIdleConns(int(dbConf.MaxIdleConns))
db.DB().SetConnMaxLifetime(*dbConf.ConnMaxLifetime)
if dbConf.Utc {
if _, err = db.DB().Exec(timezoneCommand); err != nil {
return nil, fmt.Errorf("error setting UTC timezone: %w", err)
}
}
return
}
func connection(dbConf configPB.DatabaseConfiguration) (db *gorm.DB, err error) {
url, err := dbConf.URL()
if err != nil {
return nil, err
}
db, err = gorm.Open(strings.ToLower(string(dbConf.Dialect.String())), url)
return
}