POC-golang-postgres-docker/internal/app/db.go

package app

import (
	"database/sql"
	"fmt"
)

const (
	dbhost = "DBHOST"
	dbport = "DBPORT"
	dbuser = "DBUSER"
	dbpass = "DBPASS"
	dbname = "DBNAME"
)

var Db *sql.DB

func InitDb() {
	config := dbConfig()
	var err error
	psqlInfo := fmt.Sprintf("postgres://%v:%v@%v:%v/%v?sslmode=disable",
		config[dbuser], config[dbpass],
		config[dbhost], config[dbport], config[dbname])

	fmt.Println(psqlInfo)
	Db, err = sql.Open("postgres", psqlInfo)
	if err != nil {
		panic(err)
	}
	err = Db.Ping()
	if err != nil {
		panic(err)
	}
	fmt.Println("Successfully connected!")
}

func CloseDB() {
	Db.Close()
}

func dbConfig() map[string]string {
	conf := make(map[string]string)
	conf[dbhost] = "genitywebapp_db_1"
	conf[dbport] = "5432"
	conf[dbuser] = "root_user"
	conf[dbpass] = "shahzad12"
	conf[dbname] = "db_genity"
	return conf
}