71 lines
1.3 KiB
Go
71 lines
1.3 KiB
Go
package core
|
|
|
|
import (
|
|
"database/sql"
|
|
"runtime"
|
|
|
|
_ "github.com/mattn/go-sqlite3"
|
|
)
|
|
|
|
type DB struct {
|
|
ro *sql.DB
|
|
rw *sql.DB
|
|
}
|
|
|
|
func (db *DB) Query(query string, args ...any) (*sql.Rows, error) {
|
|
return db.ro.Query(query, args...)
|
|
}
|
|
|
|
func (db *DB) QueryRow(query string, args ...any) *sql.Row {
|
|
return db.ro.QueryRow(query, args...)
|
|
}
|
|
|
|
func (db *DB) Exec(query string, args ...any) (sql.Result, error) {
|
|
return db.rw.Exec(query, args...)
|
|
}
|
|
|
|
func defaultPragma(db *sql.DB) (sql.Result, error) {
|
|
return db.Exec(`
|
|
pragma journal_mode = WAL;
|
|
pragma busy_timeout = 5000;
|
|
pragma synchronous = NORMAL;
|
|
pragma cache_size = 1000000000;
|
|
pragma foreign_keys = true;
|
|
pragma temp_store = memory;
|
|
pragma mmap_size = 3000000000;
|
|
`)
|
|
}
|
|
|
|
func OpenDb(dataSourceName string) (*DB, error) {
|
|
ro, err := sql.Open("sqlite3", dataSourceName)
|
|
if err != nil {
|
|
defer ro.Close()
|
|
return nil, err
|
|
}
|
|
ro.SetMaxOpenConns(max(4, runtime.NumCPU()))
|
|
_, err = defaultPragma(ro)
|
|
if err != nil {
|
|
defer ro.Close()
|
|
return nil, err
|
|
}
|
|
|
|
rw, err := sql.Open("sqlite3", dataSourceName)
|
|
if err != nil {
|
|
defer ro.Close()
|
|
defer rw.Close()
|
|
return nil, err
|
|
}
|
|
rw.SetMaxOpenConns(1)
|
|
_, err = defaultPragma(rw)
|
|
if err != nil {
|
|
defer ro.Close()
|
|
defer rw.Close()
|
|
return nil, err
|
|
}
|
|
|
|
wrapper := new(DB)
|
|
wrapper.ro = ro
|
|
wrapper.rw = rw
|
|
return wrapper, nil
|
|
}
|