/
db.go
51 lines (41 loc) · 885 Bytes
/
db.go
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package db
import (
"database/sql"
"fmt"
"time"
_ "github.com/jackc/pgconn"
_ "github.com/jackc/pgx/stdlib"
_ "github.com/jackc/pgx/v4"
_ "github.com/lib/pq"
)
type DB struct {
DB *sql.DB
}
var dbConn = &DB{}
const maxOpenDbConn = 10
const maxIdleDbConn = 5
const maxDbLifetime = 5 * time.Minute
func ConnectPostgres(dsn string) (*DB, error) {
d, err := sql.Open("pgx", dsn)
if err != nil {
return nil, err
}
d.SetMaxOpenConns(maxOpenDbConn)
d.SetMaxIdleConns(maxIdleDbConn)
d.SetConnMaxLifetime(maxDbLifetime)
err = testDB(d)
if err != nil {
return nil, err
}
dbConn.DB = d
return dbConn, nil
}
func testDB(d *sql.DB) error {
err := d.Ping()
if err != nil {
fmt.Println("Error", err)
return err
}
fmt.Println("*** Pinged database successfully! ***")
return nil
}