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import copy
import random
import string
from typing import List, Tuple
import redis
from redis.typing import KeysT, KeyT
def list_or_args(keys: KeysT, args: Tuple[KeyT, ...]) -> List[KeyT]:
# returns a single new list combining keys and args
try:
iter(keys)
# a string or bytes instance can be iterated, but indicates
# keys wasn't passed as a list
if isinstance(keys, (bytes, str)):
keys = [keys]
else:
keys = list(keys)
except TypeError:
keys = [keys]
if args:
keys.extend(args)
return keys
def nativestr(x):
"""Return the decoded binary string, or a string, depending on type."""
r = x.decode("utf-8", "replace") if isinstance(x, bytes) else x
if r == "null":
return
return r
def delist(x):
"""Given a list of binaries, return the stringified version."""
if x is None:
return x
return [nativestr(obj) for obj in x]
def parse_to_list(response):
"""Optimistically parse the response to a list."""
res = []
special_values = {"infinity", "nan", "-infinity"}
if response is None:
return res
for item in response:
if item is None:
res.append(None)
continue
try:
item_str = nativestr(item)
except TypeError:
res.append(None)
continue
if isinstance(item_str, str) and item_str.lower() in special_values:
res.append(item_str) # Keep as string
else:
try:
res.append(int(item))
except ValueError:
try:
res.append(float(item))
except ValueError:
res.append(item_str)
return res
def parse_list_to_dict(response):
res = {}
for i in range(0, len(response), 2):
if isinstance(response[i], list):
res["Child iterators"].append(parse_list_to_dict(response[i]))
try:
if isinstance(response[i + 1], list):
res["Child iterators"].append(parse_list_to_dict(response[i + 1]))
except IndexError:
pass
elif isinstance(response[i + 1], list):
res["Child iterators"] = [parse_list_to_dict(response[i + 1])]
else:
try:
res[response[i]] = float(response[i + 1])
except (TypeError, ValueError):
res[response[i]] = response[i + 1]
return res
def random_string(length=10):
"""
Returns a random N character long string.
"""
return "".join( # nosec
random.choice(string.ascii_lowercase) for x in range(length)
)
def decode_dict_keys(obj):
"""Decode the keys of the given dictionary with utf-8."""
newobj = copy.copy(obj)
for k in obj.keys():
if isinstance(k, bytes):
newobj[k.decode("utf-8")] = newobj[k]
newobj.pop(k)
return newobj
def get_protocol_version(client):
if isinstance(client, redis.Redis) or isinstance(client, redis.asyncio.Redis):
return client.connection_pool.connection_kwargs.get("protocol")
elif isinstance(client, redis.cluster.AbstractRedisCluster):
return client.nodes_manager.connection_kwargs.get("protocol")
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