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# -*- coding: utf-8 -*-
#
from __future__ import unicode_literals
from six import string_types
from itertools import chain
import string
import logging
import datetime
from itsdangerous import TimedJSONWebSignatureSerializer, JSONWebSignatureSerializer, \
BadSignature, SignatureExpired
from django.shortcuts import reverse as dj_reverse
from django.conf import settings
from django.core import signing
from django.utils import timezone
SECRET_KEY = settings.SECRET_KEY
def reverse(view_name, urlconf=None, args=None, kwargs=None, current_app=None, external=False):
url = dj_reverse(view_name, urlconf=urlconf, args=args, kwargs=kwargs, current_app=current_app)
if external:
url = settings.SITE_URL.strip('/') + url
return url
def get_object_or_none(model, **kwargs):
try:
obj = model.objects.get(**kwargs)
except model.DoesNotExist:
obj = None
return obj
class Signer(object):
def __init__(self, secret_key=SECRET_KEY):
self.secret_key = secret_key
def sign(self, value):
s = JSONWebSignatureSerializer(self.secret_key)
return s.dumps(value)
def unsign(self, value):
s = JSONWebSignatureSerializer(self.secret_key)
try:
return s.loads(value)
except BadSignature:
return None
def sign_t(self, value, expires_in=3600):
s = TimedJSONWebSignatureSerializer(self.secret_key, expires_in=expires_in)
return s.dumps(value)
def unsign_t(self, value):
s = TimedJSONWebSignatureSerializer(self.secret_key)
try:
return s.loads(value)
except (BadSignature, SignatureExpired):
return None
def date_expired_default():
try:
years = int(settings.CONFIG.DEFAULT_EXPIRED_YEARS)
except TypeError:
years = 70
return timezone.now() + timezone.timedelta(days=365*years)
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 search_object_attr(obj, value='', attr_list=None, ignore_case=False):
"""It's provide a method to search a object attribute equal some value
If object some attribute equal :param: value, return True else return False
class A():
name = 'admin'
age = 7
:param obj: A object
:param value: A string match object attribute
:param attr_list: Only match attribute in attr_list
:param ignore_case: Ignore case
:return: Boolean
"""
if value == '':
return True
try:
object_attr = obj.__dict__
except AttributeError:
return False
if attr_list is not None:
new_object_attr = {}
for attr in attr_list:
new_object_attr[attr] = object_attr.pop(attr)
object_attr = new_object_attr
if ignore_case:
if not isinstance(value, string_types):
return False
if value.lower() in map(string.lower, map(str, object_attr.values())):
return True
else:
if value in object_attr.values():
return True
return False
def get_logger(name=None):
return logging.getLogger('jumpserver.%s' % name)
def int_seq(seq):
try:
return map(int, seq)
except ValueError:
return seq
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
signer = Signer()