46 lines
889 B
Go
46 lines
889 B
Go
package mysql
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import (
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"context"
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"database/sql"
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"fmt"
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"time"
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// registers the MySQL driver with database/sql
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_ "github.com/go-sql-driver/mysql"
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)
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type DB struct {
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sql *sql.DB
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}
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func Open(dsn string) (*DB, error) {
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if dsn == "" {
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return &DB{}, nil
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}
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sqlDB, err := sql.Open("mysql", dsn)
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if err != nil {
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return nil, fmt.Errorf("mysql open: %w", err)
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}
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sqlDB.SetMaxOpenConns(64)
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sqlDB.SetConnMaxLifetime(30 * time.Minute)
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ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
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defer cancel()
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if err := sqlDB.PingContext(ctx); err != nil {
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_ = sqlDB.Close()
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return nil, fmt.Errorf("mysql ping: %w", err)
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}
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return &DB{sql: sqlDB}, nil
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}
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func (d *DB) SQL() *sql.DB { return d.sql }
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func (d *DB) Close() error {
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if d == nil || d.sql == nil {
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return nil
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}
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return d.sql.Close()
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}
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func (d *DB) Ready() bool { return d != nil && d.sql != nil }
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