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from functools import wraps
from typing import TYPE_CHECKING, Any, Callable, Optional, TypeVar
if TYPE_CHECKING:
from typing_extensions import Protocol
else:
Protocol = object
import binascii
TypeDec = TypeVar("TypeDec", bound=Callable[..., Any])
class GenericFunction(Protocol):
def __call__(self, *args: Any, **kwargs: Any) -> Any: ...
def gen_amz_crc32(response: Any, headerdict: Optional[dict[str, Any]] = None) -> int:
if not isinstance(response, bytes):
response = response.encode("utf-8")
crc = binascii.crc32(response)
if headerdict is not None and isinstance(headerdict, dict):
headerdict.update({"x-amz-crc32": str(crc)})
return crc
def gen_amzn_requestid_long(headerdict: Optional[dict[str, Any]] = None) -> str:
from moto.moto_api._internal import mock_random as random
req_id = random.get_random_string(length=52)
if headerdict is not None and isinstance(headerdict, dict):
headerdict.update({"x-amzn-requestid": req_id})
return req_id
def amz_crc32(f: TypeDec) -> GenericFunction:
@wraps(f)
def _wrapper(*args: Any, **kwargs: Any) -> Any: # type: ignore[misc]
response = f(*args, **kwargs)
headers = {}
status = 200
if isinstance(response, str):
body = response
else:
if len(response) == 2:
body, new_headers = response
status = new_headers.get("status", status)
else:
status, new_headers, body = response
headers.update(new_headers)
# Cast status to string
if "status" in headers:
headers["status"] = str(headers["status"])
gen_amz_crc32(body, headers)
return status, headers, body
return _wrapper
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