Files
gochat/backend/internal/app/database.go
T

72 lines
2.0 KiB
Go

package app
import (
"fmt"
"log"
"os"
"time"
"gorm.io/driver/postgres"
"gorm.io/gorm"
gormlogger "gorm.io/gorm/logger"
"github.com/gochat/gochat/internal/config"
applogger "github.com/gochat/gochat/pkg/logger"
)
// NewDatabase creates a GORM database connection.
// Pattern follows Chatwoot's ActiveRecord PostgreSQL setup in config/database.yml
func NewDatabase(cfg *config.DatabaseConfig, logLevel string) (*gorm.DB, error) {
dsn := cfg.DSN
// Map log level to GORM logger level
var gormLogLevel gormlogger.LogLevel
switch logLevel {
case "silent":
gormLogLevel = gormlogger.Silent
case "error":
gormLogLevel = gormlogger.Error
case "warn":
gormLogLevel = gormlogger.Warn
case "info":
gormLogLevel = gormlogger.Info
default:
gormLogLevel = gormlogger.Info
}
db, err := gorm.Open(postgres.Open(dsn), &gorm.Config{
Logger: newDatabaseLogger(gormLogLevel),
PrepareStmt: true,
DisableForeignKeyConstraintWhenMigrating: true, // migrate first, add FK constraints later
})
if err != nil {
return nil, fmt.Errorf("failed to connect to database: %w", err)
}
// Configure connection pool (ref: Chatwoot config/database.yml pool settings)
sqlDB, err := db.DB()
if err != nil {
return nil, fmt.Errorf("failed to get underlying sql.DB: %w", err)
}
sqlDB.SetMaxOpenConns(cfg.MaxOpenConns)
sqlDB.SetMaxIdleConns(cfg.MaxIdleConns)
sqlDB.SetConnMaxLifetime(5 * time.Minute)
sqlDB.SetConnMaxIdleTime(10 * time.Minute)
// Set default statement timeout (ref: Chatwoot POSTGRES_STATEMENT_TIMEOUT)
db.Set("gorm:statement_timeout", "5000ms")
applogger.L().Infof("Connected to PostgreSQL (pool=%d)", cfg.MaxOpenConns)
return db, nil
}
func newDatabaseLogger(level gormlogger.LogLevel) gormlogger.Interface {
return gormlogger.New(log.New(os.Stdout, "\r\n", log.LstdFlags), gormlogger.Config{
SlowThreshold: 200 * time.Millisecond,
LogLevel: level,
IgnoreRecordNotFoundError: true,
ParameterizedQueries: true,
})
}