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code/base-project/base-go-v3/db/index.go

@@ -0,0 +1,56 @@
+// db/db.go
+package db
+
+import (
+	"cn/oneao/base-go/config"
+	sqlcg "cn/oneao/base-go/db/sqlc"
+	"context"
+	"fmt"
+	"github.com/jackc/pgx/v5/pgxpool"
+	"time"
+)
+
+var (
+	DB       *pgxpool.Pool
+	DBClient *sqlcg.Queries
+)
+
+func InitDB() error {
+	cfg := config.Db
+
+	sslMode := "disable"
+	if cfg.SllMode {
+		sslMode = "require"
+	}
+
+	// 构建 DSN
+	dsn := fmt.Sprintf(
+		"postgres://%s:%s@%s:%d/%s?sslmode=%s&TimeZone=%s",
+		cfg.User, cfg.Password, cfg.Host, cfg.Port, cfg.Dbname, sslMode, cfg.TimeZone,
+	)
+
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	pool, err := pgxpool.New(ctx, dsn)
+	if err != nil {
+		return fmt.Errorf("unable to connect to database: %w", err)
+	}
+
+	// 测试连接
+	if err := pool.Ping(ctx); err != nil {
+		return fmt.Errorf("ping database failed: %w", err)
+	}
+
+	DB = pool
+
+	// 初始化 sqlc Queries，全局可用
+	DBClient = sqlcg.New(DB)
+
+	// 可选：设置连接池参数
+	pool.Config().MaxConns = int32(cfg.MaxOpenConns)
+	pool.Config().MinConns = int32(cfg.MaxIdleConns)
+	pool.Config().MaxConnLifetime = cfg.ConnMaxLifetime
+
+	return nil
+}