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postgres.go
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postgres.go
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package orm
import (
"log"
"os"
"sync"
"github.com/adhocore/urlsh/model"
"gorm.io/driver/postgres"
"gorm.io/gorm"
"gorm.io/gorm/logger"
)
var conn *gorm.DB
func pgConnect() *gorm.DB {
dsn := os.Getenv("APP_DB_DSN")
if dsn == "" {
log.Fatal("Database configuration DSN missing, Pass in APP_DB_DSN env")
}
logLevel := logger.Warn
if os.Getenv("APP_ENV") == "prod" {
logLevel = logger.Silent
}
db, err := gorm.Open(postgres.Open(dsn), &gorm.Config{
Logger: logger.Default.LogMode(logLevel),
})
if err != nil {
log.Fatal("Cannot connect to database with given DSN")
}
_ = db.AutoMigrate(&model.Keyword{}, &model.Url{})
return db
}
var once sync.Once
func Connection() *gorm.DB {
once.Do(func() {
conn = pgConnect()
})
return conn
}