chore

apps/demo-server/src/orpc/middlewares/db.ts

@@ -0,0 +1,29 @@
+import { os } from '@orpc/server'
+import { createDb } from '@/db'
+
+const IS_SERVERLESS = false // TODO: 这里需要优化
+
+let globalDb: ReturnType<typeof createDb> | null = null
+
+function getDb() {
+  if (IS_SERVERLESS) {
+    return createDb()
+  }
+
+  if (!globalDb) {
+    globalDb = createDb()
+  }
+
+  return globalDb
+}
+
+export const dbProvider = os.middleware(async ({ context, next }) => {
+  const db = getDb()
+
+  return next({
+    context: {
+      ...context,
+      db,
+    },
+  })
+})