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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 time
import copy
import ipaddress
UUID_PATTERN = re.compile(r'\w{8}(-\w{4}){3}-\w{12}')
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 get_syslogger(name=None):
return logging.getLogger('jms.%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 or unit == "T":
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, uuid.UUID):
return True
elif isinstance(seq, str) and UUID_PATTERN.match(seq):
return True
elif isinstance(seq, (list, tuple)):
all([is_uuid(x) for x in seq])
return False
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
def random_string(length):
import string
import random
charset = string.ascii_letters + string.digits
s = [random.choice(charset) for i in range(length)]
return ''.join(s)
logger = get_logger(__name__)
def timeit(func):
def wrapper(*args, **kwargs):
logger.debug("Start call: {}".format(func.__name__))
now = time.time()
result = func(*args, **kwargs)
using = (time.time() - now) * 1000
msg = "Call {} end, using: {:.1f}ms".format(func.__name__, using)
logger.debug(msg)
return result
return wrapper