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# -*- coding: utf-8 -*-
#
import re
from collections import OrderedDict
from itertools import chain
import logging
import datetime
import uuid
from functools import wraps
import copy
import ipaddress
UUID_PATTERN = re.compile(r'[0-9a-zA-Z\-]{36}')
ipip_db = None
def combine_seq(s1, s2, callback=None):
for s in (s1, s2):
if not hasattr(s, '__iter__'):
return []
seq = chain(s1, s2)
if callback:
seq = map(callback, seq)
return seq
def get_logger(name=None):
return logging.getLogger('jumpserver.%s' % name)
def timesince(dt, since='', default="just now"):
"""
Returns string representing "time since" e.g.
3 days, 5 hours.
"""
if since is '':
since = datetime.datetime.utcnow()
if since is None:
return default
diff = since - dt
periods = (
(diff.days / 365, "year", "years"),
(diff.days / 30, "month", "months"),
(diff.days / 7, "week", "weeks"),
(diff.days, "day", "days"),
(diff.seconds / 3600, "hour", "hours"),
(diff.seconds / 60, "minute", "minutes"),
(diff.seconds, "second", "seconds"),
)
for period, singular, plural in periods:
if period:
return "%d %s" % (period, singular if period == 1 else plural)
return default
def setattr_bulk(seq, key, value):
def set_attr(obj):
setattr(obj, key, value)
return obj
return map(set_attr, seq)
def set_or_append_attr_bulk(seq, key, value):
for obj in seq:
ori = getattr(obj, key, None)
if ori:
value += " " + ori
setattr(obj, key, value)
def capacity_convert(size, expect='auto', rate=1000):
"""
:param size: '100MB', '1G'
:param expect: 'K, M, G, T
:param rate: Default 1000, may be 1024
:return:
"""
rate_mapping = (
('K', rate),
('KB', rate),
('M', rate**2),
('MB', rate**2),
('G', rate**3),
('GB', rate**3),
('T', rate**4),
('TB', rate**4),
)
rate_mapping = OrderedDict(rate_mapping)
std_size = 0 # To KB
for unit in rate_mapping:
if size.endswith(unit):
try:
std_size = float(size.strip(unit).strip()) * rate_mapping[unit]
except ValueError:
pass
if expect == 'auto':
for unit, rate_ in rate_mapping.items():
if rate > std_size/rate_ > 1:
expect = unit
break
if expect not in rate_mapping:
expect = 'K'
expect_size = std_size / rate_mapping[expect]
return expect_size, expect
def sum_capacity(cap_list):
total = 0
for cap in cap_list:
size, _ = capacity_convert(cap, expect='K')
total += size
total = '{} K'.format(total)
return capacity_convert(total, expect='auto')
def get_short_uuid_str():
return str(uuid.uuid4()).split('-')[-1]
def is_uuid(seq):
if isinstance(seq, str):
if UUID_PATTERN.match(seq):
return True
else:
return False
else:
for s in seq:
if not is_uuid(s):
return False
return True
def get_request_ip(request):
x_forwarded_for = request.META.get('HTTP_X_FORWARDED_FOR', '').split(',')
if x_forwarded_for and x_forwarded_for[0]:
login_ip = x_forwarded_for[0]
else:
login_ip = request.META.get('REMOTE_ADDR', '')
return login_ip
def validate_ip(ip):
try:
ipaddress.ip_address(ip)
return True
except ValueError:
pass
return False
def with_cache(func):
cache = {}
key = "_{}.{}".format(func.__module__, func.__name__)
@wraps(func)
def wrapper(*args, **kwargs):
cached = cache.get(key)
if cached:
return cached
res = func(*args, **kwargs)
cache[key] = res
return res
return wrapper
class LocalProxy(object):
"""
Copy from werkzeug.local.LocalProxy
"""
__slots__ = ('__local', '__dict__', '__name__', '__wrapped__')
def __init__(self, local, name=None):
object.__setattr__(self, '_LocalProxy__local', local)
object.__setattr__(self, '__name__', name)
if callable(local) and not hasattr(local, '__release_local__'):
# "local" is a callable that is not an instance of Local or
# LocalManager: mark it as a wrapped function.
object.__setattr__(self, '__wrapped__', local)
def _get_current_object(self):
"""Return the current object. This is useful if you want the real
object behind the proxy at a time for performance reasons or because
you want to pass the object into a different context.
"""
if not hasattr(self.__local, '__release_local__'):
return self.__local()
try:
return getattr(self.__local, self.__name__)
except AttributeError:
raise RuntimeError('no object bound to %s' % self.__name__)
@property
def __dict__(self):
try:
return self._get_current_object().__dict__
except RuntimeError:
raise AttributeError('__dict__')
def __repr__(self):
try:
obj = self._get_current_object()
except RuntimeError:
return '<%s unbound>' % self.__class__.__name__
return repr(obj)
def __bool__(self):
try:
return bool(self._get_current_object())
except RuntimeError:
return False
def __dir__(self):
try:
return dir(self._get_current_object())
except RuntimeError:
return []
def __getattr__(self, name):
if name == '__members__':
return dir(self._get_current_object())
return getattr(self._get_current_object(), name)
def __setitem__(self, key, value):
self._get_current_object()[key] = value
def __delitem__(self, key):
del self._get_current_object()[key]
__setattr__ = lambda x, n, v: setattr(x._get_current_object(), n, v)
__delattr__ = lambda x, n: delattr(x._get_current_object(), n)
__str__ = lambda x: str(x._get_current_object())
__lt__ = lambda x, o: x._get_current_object() < o
__le__ = lambda x, o: x._get_current_object() <= o
__eq__ = lambda x, o: x._get_current_object() == o
__ne__ = lambda x, o: x._get_current_object() != o
__gt__ = lambda x, o: x._get_current_object() > o
__ge__ = lambda x, o: x._get_current_object() >= o
__cmp__ = lambda x, o: cmp(x._get_current_object(), o) # noqa
__hash__ = lambda x: hash(x._get_current_object())
__call__ = lambda x, *a, **kw: x._get_current_object()(*a, **kw)
__len__ = lambda x: len(x._get_current_object())
__getitem__ = lambda x, i: x._get_current_object()[i]
__iter__ = lambda x: iter(x._get_current_object())
__contains__ = lambda x, i: i in x._get_current_object()
__add__ = lambda x, o: x._get_current_object() + o
__sub__ = lambda x, o: x._get_current_object() - o
__mul__ = lambda x, o: x._get_current_object() * o
__floordiv__ = lambda x, o: x._get_current_object() // o
__mod__ = lambda x, o: x._get_current_object() % o
__divmod__ = lambda x, o: x._get_current_object().__divmod__(o)
__pow__ = lambda x, o: x._get_current_object() ** o
__lshift__ = lambda x, o: x._get_current_object() << o
__rshift__ = lambda x, o: x._get_current_object() >> o
__and__ = lambda x, o: x._get_current_object() & o
__xor__ = lambda x, o: x._get_current_object() ^ o
__or__ = lambda x, o: x._get_current_object() | o
__div__ = lambda x, o: x._get_current_object().__div__(o)
__truediv__ = lambda x, o: x._get_current_object().__truediv__(o)
__neg__ = lambda x: -(x._get_current_object())
__pos__ = lambda x: +(x._get_current_object())
__abs__ = lambda x: abs(x._get_current_object())
__invert__ = lambda x: ~(x._get_current_object())
__complex__ = lambda x: complex(x._get_current_object())
__int__ = lambda x: int(x._get_current_object())
__float__ = lambda x: float(x._get_current_object())
__oct__ = lambda x: oct(x._get_current_object())
__hex__ = lambda x: hex(x._get_current_object())
__index__ = lambda x: x._get_current_object().__index__()
__coerce__ = lambda x, o: x._get_current_object().__coerce__(x, o)
__enter__ = lambda x: x._get_current_object().__enter__()
__exit__ = lambda x, *a, **kw: x._get_current_object().__exit__(*a, **kw)
__radd__ = lambda x, o: o + x._get_current_object()
__rsub__ = lambda x, o: o - x._get_current_object()
__rmul__ = lambda x, o: o * x._get_current_object()
__rdiv__ = lambda x, o: o / x._get_current_object()
__rtruediv__ = __rdiv__
__rfloordiv__ = lambda x, o: o // x._get_current_object()
__rmod__ = lambda x, o: o % x._get_current_object()
__rdivmod__ = lambda x, o: x._get_current_object().__rdivmod__(o)
__copy__ = lambda x: copy.copy(x._get_current_object())
__deepcopy__ = lambda x, memo: copy.deepcopy(x._get_current_object(), memo)