mirror of https://github.com/zulip/zulip.git
49 lines
1.2 KiB
Python
49 lines
1.2 KiB
Python
import hashlib
|
|
import re
|
|
import secrets
|
|
from typing import TYPE_CHECKING, Callable, List, Optional, TypeVar
|
|
|
|
if TYPE_CHECKING:
|
|
from hashlib import _Hash
|
|
|
|
T = TypeVar("T")
|
|
|
|
|
|
def make_safe_digest(string: str, hash_func: "Callable[[bytes], _Hash]" = hashlib.sha1) -> str:
|
|
"""
|
|
return a hex digest of `string`.
|
|
"""
|
|
# hashlib.sha1, md5, etc. expect bytes, so non-ASCII strings must
|
|
# be encoded.
|
|
return hash_func(string.encode()).hexdigest()
|
|
|
|
|
|
def generate_api_key() -> str:
|
|
api_key = ""
|
|
while len(api_key) < 32:
|
|
# One iteration suffices 99.4992% of the time.
|
|
api_key += secrets.token_urlsafe(3 * 9).replace("_", "").replace("-", "")
|
|
return api_key[:32]
|
|
|
|
|
|
def has_api_key_format(key: str) -> bool:
|
|
return bool(re.fullmatch(r"([A-Za-z0-9]){32}", key))
|
|
|
|
|
|
def assert_is_not_none(value: Optional[T]) -> T:
|
|
assert value is not None
|
|
return value
|
|
|
|
|
|
def process_list_in_batches(
|
|
lst: List[T], chunk_size: int, process_batch: Callable[[List[T]], None]
|
|
) -> None:
|
|
offset = 0
|
|
|
|
while True:
|
|
items = lst[offset : offset + chunk_size]
|
|
if not items:
|
|
break
|
|
process_batch(items)
|
|
offset += chunk_size
|