/
driver.go
51 lines (41 loc) · 932 Bytes
/
driver.go
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package driver
import (
"database/sql"
"fmt"
"log"
"time"
_ "github.com/jackc/pgconn" // need this and next two for pgx
_ "github.com/jackc/pgx/v4"
_ "github.com/jackc/pgx/v4/stdlib"
)
// DB holds the database connection information
type DB struct {
SQL *sql.DB
}
var dbConn = &DB{}
const maxOpenDbConn = 25
const maxIdleDbConn = 25
const maxDbLifetime = 5 * time.Minute
// ConnectPostgres creates database pool for postgres
func ConnectPostgres(dsn string) (*DB, error) {
d, err := sql.Open("pgx", dsn)
if err != nil {
panic(err)
}
d.SetMaxOpenConns(maxOpenDbConn)
d.SetMaxIdleConns(maxIdleDbConn)
d.SetConnMaxLifetime(maxDbLifetime)
dbConn.SQL = d
err = testDB(err, d)
return dbConn, err
}
// testDB pings database
func testDB(err error, d *sql.DB) error {
err = d.Ping()
if err != nil {
fmt.Println("Error!", err)
} else {
log.Println("*** Pinged database successfully! ***")
}
return err
}