121 lines
4.6 KiB
Python
121 lines
4.6 KiB
Python
import pytz
|
||
from functools import reduce
|
||
# from collections import OrderedDict
|
||
from datetime import datetime, time, timedelta
|
||
from django.db.models import Max
|
||
from celery import task
|
||
from counter.models import DeviceCount
|
||
from mosquito.models import MosqPostStatistic, DevicePostStatistic
|
||
|
||
|
||
def max_count(x, y):
|
||
if x.count > y.count:
|
||
return x
|
||
return y
|
||
|
||
|
||
def shortest_date(date, date_list):
|
||
distance_list = [(date - _date).days for _date in date_list]
|
||
shortest_distance = min(filter(lambda x: x > 0, distance_list))
|
||
return shortest_distance
|
||
|
||
|
||
def fill_date(ret=None, tz=None):
|
||
date_list = [k for k in ret]
|
||
min_date = min(date_list)
|
||
max_date = datetime.now(tz).date()
|
||
days = (max_date - min_date).days
|
||
for d in range(1, days + 1):
|
||
date_ahead = min_date + timedelta(days=d)
|
||
if date_ahead not in ret:
|
||
distance = shortest_date(date_ahead, date_list)
|
||
ret[date_ahead] = ret[date_ahead - timedelta(days=distance)]
|
||
return ret
|
||
|
||
|
||
def get_daily_statistic(enable_container=False):
|
||
device_container = {}
|
||
daily_ret = {}
|
||
queryset = DeviceCount.objects.raw('select id, date(data_time) as date from device_count group by date')
|
||
if queryset:
|
||
tz = pytz.timezone("UTC")
|
||
device_list = {item.device_id for item in DeviceCount.objects.distinct()}
|
||
for item in device_list:
|
||
device_container[item] = set()
|
||
for q in queryset:
|
||
# 按照 device_id 分组查询最新时间 max_time，然后通过id + max_time 获取实例，用来得到count
|
||
midnight = tz.localize(datetime.combine(q.date, time(23, 59)), is_dst=None)
|
||
daily_queryset = [DeviceCount.objects.filter(device_id=x['device_id'], data_time=x['max_time'])
|
||
for x in DeviceCount.objects.filter(data_time__lte=midnight).values(
|
||
'device_id').annotate(max_time=Max('data_time'))]
|
||
if daily_queryset:
|
||
daily_queryset = [reduce(max_count, entry) if len(entry) > 1 else entry[0] for entry in daily_queryset]
|
||
if enable_container:
|
||
for device_id in device_list:
|
||
device_container[device_id] = device_container[device_id] | \
|
||
{(entry.data_time.date(), entry.count)
|
||
for entry in daily_queryset if entry.device_id == device_id}
|
||
calc_result = sum(map(lambda x: int(x.count), daily_queryset))
|
||
date = q.date
|
||
daily_ret[date] = calc_result
|
||
return daily_ret, device_container
|
||
|
||
|
||
@task()
|
||
def update_daily_statistic():
|
||
full_ret = None
|
||
# 计算每天聚合值
|
||
daily_ret, device_container = get_daily_statistic(enable_container=True)
|
||
|
||
# 计算没有记录的日期，值
|
||
if daily_ret:
|
||
full_ret = fill_date(daily_ret, tz=pytz.timezone("UTC"))
|
||
|
||
if device_container:
|
||
for device_id in device_container:
|
||
container = dict(device_container[device_id])
|
||
full_daily_ret = fill_date(container, tz=pytz.timezone("UTC"))
|
||
|
||
_date_list = [k for k in full_daily_ret]
|
||
_date_list.sort()
|
||
for d in _date_list:
|
||
try:
|
||
obj = DevicePostStatistic.objects.get(device_id=device_id, date=d)
|
||
except DevicePostStatistic.DoesNotExist:
|
||
obj = None
|
||
if obj:
|
||
obj.total = full_daily_ret[d]
|
||
obj.save()
|
||
else:
|
||
DevicePostStatistic.objects.create(device_id=device_id, total=full_daily_ret[d], date=d)
|
||
|
||
# 写入数据库
|
||
if full_ret:
|
||
_date_list = [k for k in full_ret]
|
||
_date_list.sort()
|
||
is_first = True
|
||
for d in _date_list:
|
||
try:
|
||
obj = MosqPostStatistic.objects.get(date=d)
|
||
except MosqPostStatistic.DoesNotExist:
|
||
obj = None
|
||
if is_first:
|
||
if obj:
|
||
obj.total, obj.increment = full_ret[d], full_ret[d]
|
||
obj.save()
|
||
else:
|
||
MosqPostStatistic.objects.create(date=d, total=full_ret[d], increment=full_ret[d])
|
||
else:
|
||
increment = full_ret[d] - full_ret[d - timedelta(days=1)]
|
||
if obj:
|
||
obj.total, obj.increment = full_ret[d], increment
|
||
obj.save()
|
||
else:
|
||
MosqPostStatistic.objects.create(date=d, total=full_ret[d], increment=increment)
|
||
is_first = False
|
||
return _date_list
|
||
|
||
|
||
@task()
|
||
def update_latest_statistic():
|
||
pass |