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package sqlx
import (
"database/sql"
"git.diulo.com/mogfee/kit/core/syncx"
"io"
"time"
)
const (
maxIdleConns = 64
maxOpenConns = 64
maxLifetime = time.Minute
)
var connManager = syncx.NewResourceManager()
func getCachedSqlConn(driverName string, server string) (*sql.DB, error) {
val, err := connManager.GetResource(server, func() (io.Closer, error) {
return newDBConnection(driverName, server)
})
if err != nil {
return nil, err
}
return val.(*sql.DB), nil
}
func getSqlConn(driverName, server string) (*sql.DB, error) {
return getCachedSqlConn(driverName, server)
}
func newDBConnection(driverName, datasource string) (*sql.DB, error) {
conn, err := sql.Open(driverName, datasource)
if err != nil {
return nil, err
}
conn.SetMaxIdleConns(maxIdleConns)
conn.SetMaxOpenConns(maxOpenConns)
conn.SetConnMaxLifetime(maxLifetime)
if err = conn.Ping(); err != nil {
return nil, err
}
return conn, nil
}