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app/api/v2/common/json.py

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+from __future__ import annotations
+
+from typing import Any
+
+import orjson
+from fastapi.responses import JSONResponse
+from pydantic import BaseModel
+
+
+def _default_processor(data: Any) -> Any:
+    if isinstance(data, BaseModel):
+        return _default_processor(data.dict())
+    elif isinstance(data, dict):
+        return {k: _default_processor(v) for k, v in data.items()}
+    elif isinstance(data, list):
+        return [_default_processor(v) for v in data]
+    else:
+        return data
+
+
+def dumps(data: Any) -> bytes:
+    return orjson.dumps(data, default=_default_processor)
+
+
+class ORJSONResponse(JSONResponse):
+    media_type = "application/json"
+
+    def render(self, content: Any) -> bytes:
+        return dumps(content)