split DB connection string into separate env vars

README.md

@@ -62,7 +62,11 @@ Name | Type | Default | Description
 PORT | string | localhost:3000 | http address (accepts also port number only for heroku compability)  
 LOG_LEVEL | string | debug | log level
 LOG_TEXTLOGGING | bool | false | defaults to json logging
-DATABASE_URL | string | postgres://postgres:postgres<br>@localhost:5432/gobase?sslmode=disable | PostgreSQL connection string
+DB_NETWORK | string | tcp | database 'tcp' or 'unix' connection
+DB_ADDR | string | localhost:5432 | database tcp address or unix socket
+DB_USER | string | postgres | database user name
+DB_PASSWORD | string | postgres | database user password
+DB_DATABASE | string | gobase | database shema name
 AUTH_LOGIN_URL | string | http://localhost:3000/login | client login url as sent in login token email
 AUTH_LOGIN_TOKEN_LENGTH | int | 8 | length of login token
 AUTH_LOGIN_TOKEN_EXPIRY | time.Duration | 11m | login token expiry

cmd/root.go

@@ -43,9 +43,6 @@ func init() {
 	// Cobra supports persistent flags, which, if defined here,
 	// will be global for your application.
 	RootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.go-base.yaml)")
-
-	viper.SetDefault("database_url", "postgres://postgres:postgres@localhost:5432/gobase?sslmode=disable")
-
 	RootCmd.PersistentFlags().Bool("db_debug", false, "log sql to console")
 	viper.BindPFlag("db_debug", RootCmd.PersistentFlags().Lookup("db_debug"))
 

database/postgres.go

@@ -11,13 +11,20 @@ import (
 
 // DBConn returns a postgres connection pool.
 func DBConn() (*pg.DB, error) {
+	viper.SetDefault("db_network", "tcp")
+	viper.SetDefault("db_addr", "localhost:5432")
+	viper.SetDefault("db_user", "postgres")
+	viper.SetDefault("db_password", "postgres")
+	viper.SetDefault("db_database", "gobase")
 
-	opts, err := pg.ParseURL(viper.GetString("database_url"))
-	if err != nil {
-		return nil, err
-	}
+	db := pg.Connect(&pg.Options{
+		Network:  viper.GetString("db_network"),
+		Addr:     viper.GetString("db_addr"),
+		User:     viper.GetString("db_user"),
+		Password: viper.GetString("db_password"),
+		Database: viper.GetString("db_database"),
+	})
 
-	db := pg.Connect(opts)
 	if err := checkConn(db); err != nil {
 		return nil, err
 	}

go.mod

@@ -42,3 +42,5 @@ require (
 	gopkg.in/mail.v2 v2.3.1 // indirect
 	mellium.im/sasl v0.2.1 // indirect
 )
+
+go 1.13