class MIUpdater(AsyncCrawler):
def __init__(self, *params, **kwargs):
AsyncCrawler.__init__(
self,
*params,
**kwargs,
log_print=True,
log_save_path=MY_SPIDER_LOGS_PATH + '/蜜芽/秒杀实时更新/',
ip_pool_type=IP_POOL_TYPE,
)
self.delete_sql_str = mia_delete_str_3
self.concurrency = 8 # 并发量
self.tmp_sql_server = None
self.goods_index = 1
async def _get_pc_headers(self) -> dict:
headers = await async_get_random_headers(
upgrade_insecure_requests=False, )
headers.update({
'Host': 'm.mia.com',
})
return headers
async def _get_db_old_data(self):
self.tmp_sql_server = SqlServerMyPageInfoSaveItemPipeline()
result = None
try:
self.tmp_sql_server._delete_table(sql_str=mia_delete_str_4)
await async_sleep(5)
result = list(
self.tmp_sql_server._select_table(sql_str=mia_select_str_3))
except TypeError:
self.lg.error('TypeError错误, 原因数据库连接失败...(可能维护中)')
await _print_db_old_data(logger=self.lg, result=result)
return result
async def _get_miaosha_end_time(self, miaosha_time):
miaosha_end_time = json.loads(miaosha_time).get('miaosha_end_time')
miaosha_end_time = int(
str(
time.mktime(
time.strptime(miaosha_end_time,
'%Y-%m-%d %H:%M:%S')))[0:10])
return miaosha_end_time
async def _get_new_mia_obj(self, index):
if index % 10 == 0: # 不能共享一个对象了, 否则驱动访问会异常!
try:
del self.mia_miaosha
except:
pass
collect()
self.mia_miaosha = MiaParse()
async def _update_one_goods_info(self, item, index) -> tuple:
'''
单个更新
:param item:
:param index:
:return:
'''
res = False
goods_id = item[0]
miaosha_time = item[1]
pid = item[2]
miaosha_begin_time, miaosha_end_time = await async_get_ms_begin_time_and_miaos_end_time_from_ms_time(
miaosha_time=miaosha_time,
logger=self.lg,
)
await self._get_new_mia_obj(index)
self.tmp_sql_server = await _get_new_db_conn(
db_obj=self.tmp_sql_server,
index=index,
logger=self.lg,
remainder=30,
)
if self.tmp_sql_server.is_connect_success:
is_recent_time = await self._is_recent_time(miaosha_end_time)
if is_recent_time == 0:
res = _handle_goods_shelves_in_auto_goods_table(
goods_id=goods_id,
logger=self.lg,
update_sql_str=mia_update_str_6,
sql_cli=self.tmp_sql_server,
)
self.lg.info('过期的goods_id为({}), 限时秒杀开始时间为({}), 删除成功!'.format(
goods_id, timestamp_to_regulartime(miaosha_begin_time)))
await async_sleep(.5)
self.goods_index = index + 1
return goods_id, res
elif is_recent_time == 2:
if datetime_to_timestamp(
get_shanghai_time()) > miaosha_end_time:
res = _handle_goods_shelves_in_auto_goods_table(
goods_id=goods_id,
logger=self.lg,
update_sql_str=mia_update_str_6,
sql_cli=self.tmp_sql_server,
)
self.lg.info(
'过期的goods_id为({}), 限时秒杀开始时间为({}), 删除成功!'.format(
goods_id,
timestamp_to_regulartime(miaosha_begin_time)))
else:
pass
self.goods_index = index + 1
return goods_id, res
else: # 返回1，表示在待更新区间内
self.lg.info(
'------>>>| 正在更新的goods_id为({0}) | --------->>>@ 索引值为({1})'.
format(goods_id, index))
tmp_url = 'https://m.mia.com/instant/seckill/seckillPromotionItem/' + str(
pid)
body = Requests.get_url_body(url=tmp_url,
headers=self.headers,
had_referer=True,
ip_pool_type=self.ip_pool_type)
# print(body)
body = '' if body == '' or body == '[]' else body
try:
tmp_data = json_2_dict(
json_str=body,
default_res={},
logger=self.lg,
)
assert tmp_data != {}, 'tmp_data为空dict!'
except AssertionError:
self.lg.error('遇到错误:', exc_info=True)
self.goods_index = index + 1
await async_sleep(.3)
return goods_id, res
item_list = tmp_data.get('item_list', [])
# 该pid中现有的所有goods_id的list
miaosha_goods_all_goods_id = [
item_1.get('item_id', '') for item_1 in item_list
]
# self.lg.info(str(miaosha_goods_all_goods_id))
if goods_id not in miaosha_goods_all_goods_id: # 内部已经下架的
self.lg.info('该商品已被下架限时秒杀活动，此处将其删除')
res = _handle_goods_shelves_in_auto_goods_table(
goods_id=goods_id,
logger=self.lg,
update_sql_str=mia_update_str_6,
sql_cli=self.tmp_sql_server,
)
self.lg.info('下架的goods_id为({}), 删除成功!'.format(goods_id))
self.goods_index = index + 1
await async_sleep(.3)
return goods_id, res
else: # 未下架的
res = await self._one_update(
item_list=item_list,
goods_id=goods_id,
tmp_data=tmp_data,
)
else: # 表示返回的data值为空值
self.lg.info('数据库连接失败，数据库可能关闭或者维护中')
await async_sleep(MIA_SPIKE_SLEEP_TIME) # 放慢速度
self.goods_index = index + 1
collect()
return goods_id, res
async def _update_db(self) -> None:
'''
秒杀实时更新
:return:
'''
while True:
self.lg = await self._get_new_logger(logger_name=get_uuid1())
result = await self._get_db_old_data()
if result is None:
pass
else:
self.goods_index = 1
tasks_params_list = TasksParamsListObj(
tasks_params_list=result, step=self.concurrency)
self.mia_miaosha = MiaParse()
index = 1
while True:
try:
slice_params_list = tasks_params_list.__next__()
# self.lg.info(str(slice_params_list))
except AssertionError: # 全部提取完毕, 正常退出
break
tasks = []
for item in slice_params_list:
self.lg.info('创建 task goods_id: {}'.format(item[0]))
tasks.append(
self.loop.create_task(
self._update_one_goods_info(item=item,
index=index)))
index += 1
await _get_async_task_result(tasks=tasks, logger=self.lg)
self.lg.info('全部数据更新完毕'.center(100, '#'))
if get_shanghai_time().hour == 0: # 0点以后不更新
await async_sleep(60 * 60 * 5.5)
else:
await async_sleep(2.5 * 60)
try:
del self.mia_miaosha
except:
pass
collect()
async def _one_update(self, **kwargs) -> bool:
'''
未下架的更新
:param kwargs:
:return:
'''
res = False
item_list = kwargs.get('item_list')
goods_id = kwargs.get('goods_id')
tmp_data = kwargs.get('tmp_data')
begin_time, end_time = await self._get_begin_time_and_end_time(tmp_data
)
for item_2 in item_list:
if item_2.get('item_id', '') == goods_id:
self.mia_miaosha.get_goods_data(goods_id=goods_id)
goods_data = self.mia_miaosha.deal_with_data()
if goods_data == {}: # 返回的data为空则跳过
pass
else:
goods_data['goods_id'] = str(goods_id)
goods_data['price'] = item_2.get('active_price')
goods_data['taobao_price'] = item_2.get('active_price')
goods_data['sub_title'] = item_2.get('short_info', '')
goods_data['miaosha_time'] = {
'miaosha_begin_time':
timestamp_to_regulartime(begin_time),
'miaosha_end_time': timestamp_to_regulartime(end_time),
}
goods_data['miaosha_begin_time'], goods_data[
'miaosha_end_time'] = get_miaosha_begin_time_and_miaosha_end_time(
miaosha_time=goods_data['miaosha_time'])
res = self.mia_miaosha.update_mia_xianshimiaosha_table(
data=goods_data, pipeline=self.tmp_sql_server)
break
else:
pass
return res
async def _get_begin_time_and_end_time(self, tmp_data) -> tuple:
begin_time = tmp_data.get('p_info', {}).get('start_time', '')
end_time = tmp_data.get('p_info', {}).get('end_time', '')
# 把str字符串类型转换为时间戳的形式
begin_time = int(
time.mktime(time.strptime(begin_time, '%Y/%m/%d %H:%M:%S')))
end_time = int(
time.mktime(time.strptime(end_time, '%Y/%m/%d %H:%M:%S')))
return begin_time, end_time
async def _is_recent_time(self, timestamp) -> int:
'''
判断是否在指定的日期差内
:param timestamp: 时间戳
:return: 0: 已过期恢复原价的 1: 待更新区间内的 2: 未来时间的
'''
time_1 = int(timestamp)
time_2 = datetime_to_timestamp(get_shanghai_time()) # 当前的时间戳
diff_time = time_1 - time_2
if diff_time < -86400: # (为了后台能同步下架)所以设置为 24个小时
# if diff_time < 0: # (原先的时间)结束时间 与当前时间差 <= 0
return 0 # 已过期恢复原价的
elif diff_time > 0:
return 1 # 表示是昨天跟今天的也就是待更新的
else: # 表示过期但是处于等待的数据不进行相关先删除操作(等<=24小时时再2删除)
return 2
def __del__(self):
try:
del self.lg
except:
pass
try:
del self.loop
except:
pass
try:
del self.mia_miaosha
except:
pass
collect()
def run_forever(self):
'''
实时更新数据
:return:
'''
tmp_sql_server = SqlServerMyPageInfoSaveItemPipeline()
sql_str = r'select goods_id, miaosha_time, pid from dbo.mia_xianshimiaosha where site_id=20'
try:
result = list(tmp_sql_server._select_table(sql_str=sql_str))
except TypeError:
print('TypeError错误, 原因数据库连接失败...(可能维护中)')
result = None
if result is None:
pass
else:
print('------>>> 下面是数据库返回的所有符合条件的goods_id <<<------')
print(result)
print('--------------------------------------------------------')
print('即将开始实时更新数据, 请耐心等待...'.center(100, '#'))
index = 1
for item in result: # 实时更新数据
miaosha_end_time = json.loads(item[1]).get('miaosha_end_time')
miaosha_end_time = int(
str(
time.mktime(
time.strptime(miaosha_end_time,
'%Y-%m-%d %H:%M:%S')))[0:10])
# print(miaosha_end_time)
data = {}
# 释放内存, 在外面声明就会占用很大的, 所以此处优化内存的方法是声明后再删除释放
mia_miaosha = MiaParse()
if index % 50 == 0: # 每50次重连一次，避免单次长连无响应报错
print('正在重置，并与数据库建立新连接中...')
tmp_sql_server = SqlServerMyPageInfoSaveItemPipeline()
print('与数据库的新连接成功建立...')
if tmp_sql_server.is_connect_success:
if self.is_recent_time(miaosha_end_time) == 0:
tmp_sql_server._delete_table(
sql_str=self.delete_sql_str, params=(item[0]))
print(
'过期的goods_id为(%s)' % item[0],
', 限时秒杀开始时间为(%s), 删除成功!' %
json.loads(item[1]).get('miaosha_begin_time'))
elif self.is_recent_time(miaosha_end_time) == 2:
# break # 跳出循环
pass # 此处应该是pass,而不是break，因为数据库传回的goods_id不都是按照顺序的
else: # 返回1，表示在待更新区间内
print(
'------>>>| 正在更新的goods_id为(%s) | --------->>>@ 索引值为(%d)'
% (item[0], index))
data['goods_id'] = item[0]
# print('------>>>| 爬取到的数据为: ', data)
tmp_url = 'https://m.mia.com/instant/seckill/seckillPromotionItem/' + str(
item[2])
body = MyRequests.get_url_body(url=tmp_url,
headers=self.headers,
had_referer=True)
# print(body)
if body == '' or body == '[]':
print('获取到的body为空值! 此处跳过')
else:
try:
tmp_data = json.loads(body)
except:
tmp_data = {}
print('json.loads转换body时出错, 此处跳过!')
begin_time = tmp_data.get('p_info', {}).get(
'start_time', '')
end_time = tmp_data.get('p_info',
{}).get('end_time', '')
begin_time = int(
time.mktime(
time.strptime(begin_time,
'%Y/%m/%d %H:%M:%S'))
) # 把str字符串类型转换为时间戳的形式
end_time = int(
time.mktime(
time.strptime(end_time,
'%Y/%m/%d %H:%M:%S')))
item_list = tmp_data.get('item_list', [])
# 该pid中现有的所有goods_id的list
miaosha_goods_all_goods_id = [
item_1.get('item_id', '')
for item_1 in item_list
]
if item[0] not in miaosha_goods_all_goods_id: # 内部已经下架的
print('该商品已被下架限时秒杀活动，此处将其删除')
tmp_sql_server._delete_table(
sql_str=self.delete_sql_str,
params=(item[0]))
print('下架的goods_id为(%s)' % item[0], ', 删除成功!')
pass
else: # 未下架的
for item_2 in item_list:
if item_2.get('item_id', '') == item[0]:
mia_miaosha.get_goods_data(
goods_id=item[0])
goods_data = mia_miaosha.deal_with_data(
)
if goods_data == {}: # 返回的data为空则跳过
pass
else:
goods_data['goods_id'] = str(
item[0])
goods_data['price'] = item_2.get(
'active_price')
goods_data[
'taobao_price'] = item_2.get(
'active_price')
goods_data[
'sub_title'] = item_2.get(
'short_info', '')
goods_data['miaosha_time'] = {
'miaosha_begin_time':
timestamp_to_regulartime(
begin_time),
'miaosha_end_time':
timestamp_to_regulartime(
end_time),
}
goods_data[
'miaosha_begin_time'], goods_data[
'miaosha_end_time'] = self.get_miaosha_begin_time_and_miaosha_end_time(
miaosha_time=goods_data[
'miaosha_time'])
# pprint(goods_data)
# print(goods_data)
mia_miaosha.update_mia_xianshimiaosha_table(
data=goods_data,
pipeline=tmp_sql_server)
sleep(MIA_SPIKE_SLEEP_TIME) # 放慢速度
else:
pass
else: # 表示返回的data值为空值
print('数据库连接失败，数据库可能关闭或者维护中')
pass
index += 1
gc.collect()
print('全部数据更新完毕'.center(100, '#')) # sleep(60*60)
if get_shanghai_time().hour == 0: # 0点以后不更新
sleep(60 * 60 * 5.5)
else:
sleep(5)
gc.collect()