first commit

apps/backend/internal/db/pool.go

@@ -0,0 +1,56 @@
+package db
+
+import (
+	"context"
+	"time"
+
+	"bookra/apps/backend/internal/config"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+type Pools struct {
+	App    *pgxpool.Pool
+	Direct *pgxpool.Pool
+}
+
+func NewPools(cfg config.Config) (*Pools, error) {
+	pools := &Pools{}
+
+	if cfg.DatabaseURL != "" {
+		pool, err := connect(cfg.DatabaseURL)
+		if err != nil {
+			return nil, err
+		}
+		pools.App = pool
+	}
+
+	if cfg.DatabaseDirectURL != "" {
+		pool, err := connect(cfg.DatabaseDirectURL)
+		if err != nil {
+			return nil, err
+		}
+		pools.Direct = pool
+	}
+
+	return pools, nil
+}
+
+func (p *Pools) Close() {
+	if p.App != nil {
+		p.App.Close()
+	}
+	if p.Direct != nil {
+		p.Direct.Close()
+	}
+}
+
+func (p *Pools) DatabaseConfigured() bool {
+	return p.App != nil || p.Direct != nil
+}
+
+func connect(databaseURL string) (*pgxpool.Pool, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+	return pgxpool.New(ctx, databaseURL)
+}