remove depedency

pkg/database.go

@@ -0,0 +1,74 @@
+// VulcanizeDB
+// Copyright © 2019 Vulcanize
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package validator
+
+import (
+	"fmt"
+
+	"github.com/jmoiron/sqlx"
+	"github.com/spf13/viper"
+)
+
+// Env variables
+const (
+	DATABASE_NAME     = "DATABASE_NAME"
+	DATABASE_HOSTNAME = "DATABASE_HOSTNAME"
+	DATABASE_PORT     = "DATABASE_PORT"
+	DATABASE_USER     = "DATABASE_USER"
+	DATABASE_PASSWORD = "DATABASE_PASSWORD"
+)
+
+// NewDB returns a new sqlx.DB from config/cli/env variables
+func NewDB() (*sqlx.DB, error) {
+	c := Config{}
+	c.Init()
+	return sqlx.Connect("postgres", c.ConnString())
+}
+
+type Config struct {
+	Hostname string
+	Name     string
+	User     string
+	Password string
+	Port     int
+}
+
+func (c *Config) ConnString() string {
+	if len(c.User) > 0 && len(c.Password) > 0 {
+		return fmt.Sprintf("postgresql://%s:%s@%s:%d/%s?sslmode=disable",
+			c.User, c.Password, c.Hostname, c.Port, c.Name)
+	}
+	if len(c.User) > 0 && len(c.Password) == 0 {
+		return fmt.Sprintf("postgresql://%s@%s:%d/%s?sslmode=disable",
+			c.User, c.Hostname, c.Port, c.Name)
+	}
+	return fmt.Sprintf("postgresql://%s:%d/%s?sslmode=disable", c.Hostname, c.Port, c.Name)
+}
+
+func (c *Config) Init() {
+	viper.BindEnv("database.name", DATABASE_NAME)
+	viper.BindEnv("database.hostname", DATABASE_HOSTNAME)
+	viper.BindEnv("database.port", DATABASE_PORT)
+	viper.BindEnv("database.user", DATABASE_USER)
+	viper.BindEnv("database.password", DATABASE_PASSWORD)
+
+	c.Name = viper.GetString("database.name")
+	c.Hostname = viper.GetString("database.hostname")
+	c.Port = viper.GetInt("database.port")
+	c.User = viper.GetString("database.user")
+	c.Password = viper.GetString("database.password")
+}