def run_forever(self):
'''
实时更新数据
:return:
'''
tmp_sql_server = SqlServerMyPageInfoSaveItemPipeline()
try:
tmp_sql_server._delete_table(sql_str=mg_delete_str_4)
result = list(
tmp_sql_server._select_table(sql_str=mg_select_str_3))
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
mogujie_miaosha = MoGuJieMiaoShaParse()
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]
item_list = self.get_item_list(event_time=str(item[2]))
if item_list == '':
# 可能网络状况导致, 先跳过
pass
elif item_list == []:
print('该商品已被下架限时秒杀活动，此处将其逻辑删除')
# tmp_sql_server._delete_table(sql_str=self.delete_sql_str, params=(item[0]))
tmp_sql_server._update_table(
sql_str=mg_update_str_1, params=(item[0], ))
print('下架的goods_id为(%s)' % item[0], ', 删除成功!')
pass
else:
# 该event_time中现有的所有goods_id的list
miaosha_goods_all_goods_id = [
item_1.get('iid', '') 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，此处将其逻辑删除')
# tmp_sql_server._delete_table(sql_str=self.delete_sql_str, params=(item[0]))
tmp_sql_server._update_table(
sql_str=mg_update_str_1,
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('iid', '') == item[0]:
spider_url = item[3]
mogujie_miaosha.get_goods_data(
goods_id=spider_url)
goods_data = mogujie_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])
# price设置为原价
try:
tmp_price_list = sorted([
round(
float(
item_4.get(
'normal_price',
'')), 2)
for item_4 in goods_data[
'price_info_list']
])
price = Decimal(
tmp_price_list[-1]
).__round__(2) # 商品原价
goods_data['price'] = price
except:
print('设置price为原价时出错!请检查')
continue
goods_data['miaosha_time'] = {
'miaosha_begin_time':
timestamp_to_regulartime(
int(
item_2.get(
'startTime', 0))),
'miaosha_end_time':
timestamp_to_regulartime(
int(
item_2.get(
'endTime', 0))),
}
goods_data[
'miaosha_begin_time'], goods_data[
'miaosha_end_time'] = get_miaosha_begin_time_and_miaosha_end_time(
miaosha_time=goods_data[
'miaosha_time'])
# print(goods_data['title'])
# pprint(goods_data)
# print(goods_data)
mogujie_miaosha.update_mogujie_xianshimiaosha_table(
data=goods_data,
pipeline=tmp_sql_server)
sleep(MOGUJIE_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()
def deal_with_data(self, *param):
'''
处理并存储相关秒杀商品的数据
:param param: 相关参数
:return:
'''
print(60 * '*')
event_time = param[0]
item_list = param[1]
print('秒杀开始时间:', timestamp_to_regulartime(event_time), '\t',
'对应时间戳为: ', event_time)
print(60 * '*')
mogujie = MoGuJieMiaoShaParse()
my_pipeline = SqlServerMyPageInfoSaveItemPipeline()
if my_pipeline.is_connect_success:
_ = list(my_pipeline._select_table(sql_str=mg_select_str_4))
db_goods_id_list = [item[0] for item in _]
for item in item_list:
goods_id = str(item.get('iid', ''))
if goods_id in db_goods_id_list:
print('该goods_id已经存在于数据库中, 此处跳过')
pass
else:
tmp_url = item.get('link', '')
# print(tmp_url)
try:
object_id = re.compile('objectId=(\w+)').findall(
tmp_url)[0]
except IndexError: # 表示匹配到的地址不是秒杀商品的地址
print('+++++++ 这个url不是秒杀的url: ', tmp_url)
continue
tmp_url = 'https://shop.mogujie.com/rushdetail/{0}?objectId={1}&type=rush'.format(
goods_id, object_id)
tmp_ = mogujie.get_goods_id_from_url(tmp_url)
mogujie.get_goods_data(goods_id=tmp_)
goods_data = mogujie.deal_with_data()
if goods_data == {}: # 返回的data为空则跳过
pass
else: # 否则就解析并且插入
goods_data['goods_url'] = tmp_url
goods_data['goods_id'] = str(goods_id)
# price设置为原价
try:
tmp_price_list = sorted([
round(float(item_4.get('normal_price', '')), 2)
for item_4 in goods_data['price_info_list']
])
price = Decimal(tmp_price_list[-1]).__round__(
2) # 商品原价
goods_data['price'] = price
except:
print('设置price为原价时出错!请检查')
sleep(MOGUJIE_SLEEP_TIME) # 放慢速度
continue
goods_data['miaosha_time'] = {
'miaosha_begin_time':
timestamp_to_regulartime(
int(item.get('startTime', 0))),
'miaosha_end_time':
timestamp_to_regulartime(
int(item.get('endTime', 0))),
}
goods_data['miaosha_begin_time'], goods_data[
'miaosha_end_time'] = get_miaosha_begin_time_and_miaosha_end_time(
miaosha_time=goods_data['miaosha_time'])
goods_data['event_time'] = str(event_time)
# pprint(goods_data)
# print(goods_data)
res = mogujie.insert_into_mogujie_xianshimiaosha_table(
data=goods_data, pipeline=my_pipeline)
if res:
if goods_id not in db_goods_id_list:
db_goods_id_list.append(goods_id)
sleep(MOGUJIE_SLEEP_TIME) # 放慢速度
else:
print('数据库连接失败，此处跳过!')
pass
try:
del mogujie
except:
pass
gc.collect()