feat: add pgsql db

internal/pkg/database/pgsqldb/gorm.go

@@ -0,0 +1,70 @@
+package pgsqldb
+
+import (
+	"fmt"
+
+	"github.com/sirupsen/logrus"
+	"github.com/spf13/viper"
+
+	"gorm.io/driver/postgres"
+	"gorm.io/gorm"
+
+	"git.esin.io/kimbon/weapp/internal/pkg/logging/gormlogrus"
+)
+
+func DefaultDBWithGORM() *gorm.DB {
+	url := NewConnectionString()
+	logger := logrus.StandardLogger()
+	db, err := NewGORM(url, logger)
+	if err != nil {
+		panic(err)
+	}
+	return db
+}
+
+func NewGORM(url string, logger logrus.FieldLogger) (*gorm.DB, error) {
+	db, err := gorm.Open(
+		postgres.Open(url),
+		&gorm.Config{
+			FullSaveAssociations: true,
+			Logger:               gormlogrus.New(logger),
+		})
+	if err != nil {
+		return nil, err
+	}
+	return db, nil
+}
+
+type connectionString struct {
+	host            string
+	port            int32
+	user            string
+	password        string
+	database        string
+	applicationName string
+	timezone        string
+	sslModel        string
+}
+
+func NewConnectionString() string {
+	c := connectionString{
+		host:            viper.GetString("db.postgres.host"),
+		port:            viper.GetInt32("db.postgres.port"),
+		database:        viper.GetString("db.postgres.database"),
+		user:            viper.GetString("db.postgres.user"),
+		password:        viper.GetString("db.postgres.password"),
+		applicationName: viper.GetString("db.postgres.application_name"),
+		timezone:        viper.GetString("db.postgres.tz"),
+		sslModel:        viper.GetString("db.postgres.ssl.mode"),
+	}
+	return c.URLString()
+}
+
+func (c connectionString) URLString() string {
+	return fmt.Sprintf(c.Format(),
+		c.user, c.password, c.host, c.port, c.database, c.sslModel, c.applicationName, c.timezone)
+}
+
+func (c connectionString) Format() string {
+	return "postgres://%s:%s@%s:%d/%s?sslmode=%s&application_name=%s&timezone=%s"
+}