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398 lines
9.3 KiB
398 lines
9.3 KiB
# -*- coding: utf-8 -*-
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#
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import re
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from django.templatetags.static import static
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from collections import OrderedDict
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from itertools import chain
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import logging
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import datetime
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import uuid
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from functools import wraps
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import time
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import ipaddress
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import psutil
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import platform
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import os
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import socket
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from django.conf import settings
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UUID_PATTERN = re.compile(r'\w{8}(-\w{4}){3}-\w{12}')
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ipip_db = None
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def combine_seq(s1, s2, callback=None):
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for s in (s1, s2):
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if not hasattr(s, '__iter__'):
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return []
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seq = chain(s1, s2)
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if callback:
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seq = map(callback, seq)
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return seq
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def get_logger(name=''):
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if '/' in name:
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name = os.path.basename(name).replace('.py', '')
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return logging.getLogger('jumpserver.%s' % name)
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def get_syslogger(name=''):
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return logging.getLogger('syslog.%s' % name)
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def timesince(dt, since='', default="just now"):
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"""
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Returns string representing "time since" e.g.
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3 days, 5 hours.
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"""
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if not since:
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since = datetime.datetime.utcnow()
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if since is None:
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return default
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diff = since - dt
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periods = (
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(diff.days / 365, "year", "years"),
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(diff.days / 30, "month", "months"),
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(diff.days / 7, "week", "weeks"),
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(diff.days, "day", "days"),
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(diff.seconds / 3600, "hour", "hours"),
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(diff.seconds / 60, "minute", "minutes"),
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(diff.seconds, "second", "seconds"),
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)
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for period, singular, plural in periods:
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if period:
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return "%d %s" % (period, singular if period == 1 else plural)
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return default
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def setattr_bulk(seq, key, value):
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def set_attr(obj):
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setattr(obj, key, value)
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return obj
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return map(set_attr, seq)
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def set_or_append_attr_bulk(seq, key, value):
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for obj in seq:
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ori = getattr(obj, key, None)
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if ori:
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value += " " + ori
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setattr(obj, key, value)
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def capacity_convert(size, expect='auto', rate=1000):
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"""
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:param size: '100MB', '1G'
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:param expect: 'K, M, G, T
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:param rate: Default 1000, may be 1024
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:return:
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"""
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rate_mapping = (
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('K', rate),
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('KB', rate),
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('M', rate**2),
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('MB', rate**2),
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('G', rate**3),
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('GB', rate**3),
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('T', rate**4),
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('TB', rate**4),
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)
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rate_mapping = OrderedDict(rate_mapping)
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std_size = 0 # To KB
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for unit in rate_mapping:
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if size.endswith(unit):
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try:
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std_size = float(size.strip(unit).strip()) * rate_mapping[unit]
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except ValueError:
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pass
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if expect == 'auto':
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for unit, rate_ in rate_mapping.items():
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if rate > std_size/rate_ >= 1 or unit == "T":
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expect = unit
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break
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if expect not in rate_mapping:
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expect = 'K'
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expect_size = std_size / rate_mapping[expect]
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return expect_size, expect
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def sum_capacity(cap_list):
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total = 0
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for cap in cap_list:
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size, _ = capacity_convert(cap, expect='K')
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total += size
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total = '{} K'.format(total)
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return capacity_convert(total, expect='auto')
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def get_short_uuid_str():
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return str(uuid.uuid4()).split('-')[-1]
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def is_uuid(seq):
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if isinstance(seq, uuid.UUID):
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return True
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elif isinstance(seq, str) and UUID_PATTERN.match(seq):
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return True
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elif isinstance(seq, (list, tuple)):
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return all([is_uuid(x) for x in seq])
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return False
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def get_request_ip(request):
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x_forwarded_for = request.META.get('HTTP_X_FORWARDED_FOR', '').split(',')
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if x_forwarded_for and x_forwarded_for[0]:
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login_ip = x_forwarded_for[0]
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else:
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login_ip = request.META.get('REMOTE_ADDR', '')
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return login_ip
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def get_request_ip_or_data(request):
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ip = ''
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if hasattr(request, 'data'):
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ip = request.data.get('remote_addr', '')
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ip = ip or get_request_ip(request)
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return ip
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def get_request_user_agent(request):
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user_agent = request.META.get('HTTP_USER_AGENT', '')
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return user_agent
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def validate_ip(ip):
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try:
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ipaddress.ip_address(ip)
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return True
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except ValueError:
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pass
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return False
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def with_cache(func):
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cache = {}
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key = "_{}.{}".format(func.__module__, func.__name__)
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@wraps(func)
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def wrapper(*args, **kwargs):
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cached = cache.get(key)
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if cached:
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return cached
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res = func(*args, **kwargs)
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cache[key] = res
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return res
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return wrapper
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logger = get_logger(__name__)
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def timeit(func):
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def wrapper(*args, **kwargs):
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name = func
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for attr in ('__qualname__', '__name__'):
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if hasattr(func, attr):
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name = getattr(func, attr)
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break
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logger.debug("Start call: {}".format(name))
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now = time.time()
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result = func(*args, **kwargs)
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using = (time.time() - now) * 1000
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msg = "End call {}, using: {:.1f}ms".format(name, using)
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logger.debug(msg)
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return result
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return wrapper
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def group_obj_by_count(objs, count=50):
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objs_grouped = [
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objs[i:i + count] for i in range(0, len(objs), count)
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]
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return objs_grouped
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def dict_get_any(d, keys):
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for key in keys:
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value = d.get(key)
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if value:
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return value
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return None
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class lazyproperty:
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def __init__(self, func):
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self.func = func
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def __get__(self, instance, cls):
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if instance is None:
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return self
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else:
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value = self.func(instance)
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setattr(instance, self.func.__name__, value)
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return value
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def get_disk_usage(path):
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return psutil.disk_usage(path=path).percent
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def get_cpu_load():
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cpu_load_1, cpu_load_5, cpu_load_15 = psutil.getloadavg()
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cpu_count = psutil.cpu_count()
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single_cpu_load_1 = cpu_load_1 / cpu_count
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single_cpu_load_1 = '%.2f' % single_cpu_load_1
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return float(single_cpu_load_1)
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def get_docker_mem_usage_if_limit():
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try:
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with open('/sys/fs/cgroup/memory/memory.limit_in_bytes') as f:
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limit_in_bytes = int(f.readline())
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total = psutil.virtual_memory().total
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if limit_in_bytes >= total:
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raise ValueError('Not limit')
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with open('/sys/fs/cgroup/memory/memory.usage_in_bytes') as f:
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usage_in_bytes = int(f.readline())
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with open('/sys/fs/cgroup/memory/memory.stat') as f:
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inactive_file = 0
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for line in f:
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if line.startswith('total_inactive_file'):
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name, inactive_file = line.split()
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break
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if line.startswith('inactive_file'):
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name, inactive_file = line.split()
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continue
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inactive_file = int(inactive_file)
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return ((usage_in_bytes - inactive_file) / limit_in_bytes) * 100
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except Exception as e:
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return None
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def get_memory_usage():
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usage = get_docker_mem_usage_if_limit()
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if usage is not None:
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return usage
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return psutil.virtual_memory().percent
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class Time:
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def __init__(self):
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self._timestamps = []
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self._msgs = []
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def begin(self):
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self._timestamps.append(time.time())
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def time(self, msg):
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self._timestamps.append(time.time())
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self._msgs.append(msg)
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def print(self):
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last, *timestamps = self._timestamps
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for timestamp, msg in zip(timestamps, self._msgs):
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logger.debug(f'TIME_IT: {msg} {timestamp-last}')
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last = timestamp
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def bulk_get(d, keys, default=None):
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values = []
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for key in keys:
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values.append(d.get(key, default))
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return values
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def unique(objects, key=None):
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seen = OrderedDict()
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if key is None:
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key = lambda item: item
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for obj in objects:
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v = key(obj)
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if v not in seen:
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seen[v] = obj
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return list(seen.values())
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def get_file_by_arch(dir, filename):
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platform_name = platform.system()
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arch = platform.machine()
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file_path = os.path.join(
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settings.BASE_DIR, dir, platform_name, arch, filename
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)
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return file_path
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def pretty_string(data, max_length=128, ellipsis_str='...'):
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"""
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params:
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data: abcdefgh
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max_length: 7
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ellipsis_str: ...
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return:
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ab...gh
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"""
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data = str(data)
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if len(data) < max_length:
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return data
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remain_length = max_length - len(ellipsis_str)
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half = remain_length // 2
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if half <= 1:
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return data[:max_length]
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start = data[:half]
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end = data[-half:]
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data = f'{start}{ellipsis_str}{end}'
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return data
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def group_by_count(it, count):
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return [it[i:i+count] for i in range(0, len(it), count)]
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def test_ip_connectivity(host, port, timeout=0.5):
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"""
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timeout: seconds
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"""
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sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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sock.settimeout(timeout)
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result = sock.connect_ex((host, int(port)))
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sock.close()
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if result == 0:
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connectivity = True
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else:
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connectivity = False
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return connectivity
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def static_or_direct(logo_path):
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if logo_path.startswith('img/'):
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return static(logo_path)
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else:
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return logo_path
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def make_dirs(name, mode=0o755, exist_ok=False):
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""" 默认权限设置为 0o755 """
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return os.makedirs(name, mode=mode, exist_ok=exist_ok)
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