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postgres_db.go
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/
postgres_db.go
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package db
import (
"context"
"database/sql"
"fmt"
"time"
"github.com/joseclaudioads/url-shortener/internal/utils/environments"
)
func getUrlConnection() string {
host := environments.DbHost
port := environments.DbPort
user := environments.DbUser
password := environments.DbPassword
dbname := environments.DbName
return fmt.Sprintf("host=%s port=%s user=%s password=%s dbname=%s sslmode=disable", host, port, user, password, dbname)
}
var sqlDB *sql.DB
func OpenDB() (*sql.DB, error) {
if sqlDB != nil {
return sqlDB, nil
}
db, err := sql.Open("postgres", getUrlConnection())
if err != nil {
return nil, err
}
maxConn := environments.GetDbMaxConnections()
db.SetMaxOpenConns(maxConn)
db.SetMaxIdleConns(maxConn)
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
err = db.PingContext(ctx)
if err != nil {
return nil, err
}
sqlDB = db
return sqlDB, nil
}