/
sql.go
72 lines (64 loc) · 1.5 KB
/
sql.go
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package database
import (
"database/sql"
"fmt"
"os"
_ "github.com/lib/pq"
"github.com/pkg/errors"
)
var DB *sql.DB
const (
dbhost = "DBHOST"
dbport = "DBPORT"
dbuser = "DBUSER"
dbpass = "DBPASS"
dbname = "DBNAME"
)
func InitDb() {
config := dbConfig()
var err error
psqlInfo := fmt.Sprintf("host=%s port=%s user=%s "+
"password=%s dbname=%s sslmode=disable",
config[dbhost], config[dbport],
config[dbuser], config[dbpass], config[dbname])
if DB, err = sql.Open("postgres", psqlInfo); err != nil {
err = errors.Wrapf(err,
"Couldn't open connection to postgres database")
return
}
if err = DB.Ping(); err != nil {
err = errors.Wrapf(err,
"Couldn't ping postgres database")
return
}
fmt.Println("Successfully connected to the postgres database!")
}
func dbConfig() map[string]string {
conf := make(map[string]string)
host, ok := os.LookupEnv(dbhost)
if !ok {
panic("DB_HOST environment variable required but not set")
}
port, ok := os.LookupEnv(dbport)
if !ok {
panic("DB_PORT environment variable required but not set")
}
user, ok := os.LookupEnv(dbuser)
if !ok {
panic("DB_USER environment variable required but not set")
}
password, ok := os.LookupEnv(dbpass)
if !ok {
panic("DB_PASSWORD environment variable required but not set")
}
name, ok := os.LookupEnv(dbname)
if !ok {
panic("DB_NAME environment variable required but not set")
}
conf[dbhost] = host
conf[dbport] = port
conf[dbuser] = user
conf[dbpass] = password
conf[dbname] = name
return conf
}