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from typing import Any, Dict, Optional, Sequence, Type
from pydantic import BaseModel, create_model
from starlette.exceptions import HTTPException as StarletteHTTPException
from starlette.exceptions import WebSocketException as WebSocketException # noqa: F401
class HTTPException(StarletteHTTPException):
def __init__(
self,
status_code: int,
detail: Any = None,
headers: Optional[Dict[str, str]] = None,
) -> None:
super().__init__(status_code=status_code, detail=detail, headers=headers)
RequestErrorModel: Type[BaseModel] = create_model("Request")
WebSocketErrorModel: Type[BaseModel] = create_model("WebSocket")
class FastAPIError(RuntimeError):
"""
A generic, FastAPI-specific error.
"""
class ValidationException(Exception):
def __init__(self, errors: Sequence[Any]) -> None:
self._errors = errors
def errors(self) -> Sequence[Any]:
return self._errors
class RequestValidationError(ValidationException):
def __init__(self, errors: Sequence[Any], *, body: Any = None) -> None:
super().__init__(errors)
self.body = body
class WebSocketRequestValidationError(ValidationException):
pass
class ResponseValidationError(ValidationException):
def __init__(self, errors: Sequence[Any], *, body: Any = None) -> None:
super().__init__(errors)
self.body = body
def __str__(self) -> str:
message = f"{len(self._errors)} validation errors:\n"
for err in self._errors:
message += f" {err}\n"
return message
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