/
main.go
54 lines (45 loc) · 1.04 KB
/
main.go
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package psql
import (
"database/sql"
"fmt"
"log/slog"
"time"
"github.com/go-sql-driver/mysql"
)
var db *sql.DB
// Init starts the database pool and allows all other methods in psql to work
func Init(dsn string) error {
cfg, err := mysql.ParseDSN(dsn)
if err != nil {
return err
}
return InitCfg(cfg)
}
func InitCfg(cfg *mysql.Config) error {
var err error
cfg.Params = map[string]string{
"charset": "utf8mb4",
"sql_mode": "'ANSI,NO_BACKSLASH_ESCAPES'",
}
// use db to check
db, err = sql.Open("mysql", cfg.FormatDSN())
if err != nil {
return fmt.Errorf("connection failed: %w", err)
}
db.SetConnMaxLifetime(time.Minute * 3)
db.SetMaxOpenConns(128)
db.SetMaxIdleConns(32)
res, err := db.Query("SHOW VARIABLES LIKE 'version%'")
if err != nil {
return fmt.Errorf("SHOW VARIABLES failed: %w", err)
}
defer res.Close()
for res.Next() {
var k, v string
if err := res.Scan(&k, &v); err != nil {
panic(err)
}
slog.Debug(fmt.Sprintf("[mysql] %s = %s", k, v), "event", "psql:init:dbvar", "psql.dbvar", k)
}
return nil
}