forked from Boris-code/feapder
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathexport_data.py
More file actions
167 lines (150 loc) · 5.35 KB
/
Copy pathexport_data.py
File metadata and controls
167 lines (150 loc) · 5.35 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
# -*- coding: utf-8 -*-
"""
Created on 2018-07-29 22:48:30
---------
@summary: 导出数据
---------
@author: Boris
@email: [email protected]
"""
import feapder.utils.tools as tools
from feapder.db.mysqldb import MysqlDB
from feapder.db.redisdb import RedisDB
from feapder.utils.log import log
class ExportData(object):
def __init__(self):
self._redisdb = None
self._to_db = None
@property
def redisdb(self):
if not self._redisdb:
self._redisdb = RedisDB()
return self._redisdb
@property
def to_db(self):
if not self._to_db:
self._to_db = MysqlDB()
return self._to_db
def export(self, from_table, to_table, auto_update=False, batch_count=100):
"""
@summary:
用于从redis的item中导出数据到关系型数据库，如mysql/oracle
from_table与to_table表结构必须一致
---------
@param from_table:
@param to_table:
@param auto_update: 当数据存在时是否自动更新 默认否
---------
@result:
"""
total_count = 0
while True:
datas = []
try:
datas = self.redisdb.sget(from_table, count=batch_count, is_pop=False)
if not datas:
log.info(
"""
\r%s -> %s 共导出 %s 条数据"""
% (from_table, to_table, total_count)
)
break
json_datas = [eval(data) for data in datas]
sql, json_datas = tools.make_batch_sql(
to_table, json_datas, auto_update
)
if self.to_db.add_batch(sql, json_datas):
total_count += len(json_datas)
self.redisdb.srem(from_table, datas)
except Exception as e:
log.exception(e)
log.error(datas)
def export_all(
self,
tables,
auto_update=False,
batch_count=100,
every_table_per_export_callback=None,
):
"""
@summary: 导出所有item
---------
@param tables: 如qidian 则导出起点下面所有的items
数据库中的表格式必须有规律 如导出 qidian:comment:s_qidian_book_comment_dynamic_item 对应导入 qidian_book_comment_dynamic
@param auto_update: 是否自动更新
@param batch_count: 每批次导出的数量
@every_table_per_export_callback: 导出前的回调函数, 用来修改特定表的参数 to_table, auto_update, batch_count
如：
def every_table_per_export_callback(to_table, auto_update, batch_count):
if to_table == 'xxx':
auto_update = True
return to_table, auto_update, batch_count
---------
@result:
"""
tables = (
self.redisdb.getkeys(tables + "*_item")
if not isinstance(tables, list)
else tables
)
if not tables:
log.info("无表数据")
for table in tables:
from_table = table
to_table = tools.get_info(str(from_table), ":s_(.*?)_item$", fetch_one=True)
if callable(every_table_per_export_callback):
to_table, auto_update, batch_count = every_table_per_export_callback(
to_table, auto_update, batch_count
)
log.info(
"""
\r正在导出 %s -> %s"""
% (from_table, to_table)
)
self.export(from_table, to_table, auto_update, batch_count)
def export_items(self, tab_item, items_data):
"""
@summary:
---------
@param tab_item: redis中items的表名
@param items_data: [item.to_dict] 数据
---------
@result:
"""
to_table = tools.get_info(tab_item, ":s_(.*?)_item$", fetch_one=True)
sql, datas = tools.make_batch_sql(to_table, items_data)
add_count = self.to_db.add_batch(sql, datas)
datas_size = len(datas)
if add_count is None:
log.error("导出数据到表 %s 失败" % (to_table))
else:
log.info(
"共导出 %s 条数据 到 %s, 重复 %s 条"
% (datas_size, to_table, datas_size - add_count)
)
return add_count != None
def update_items(self, tab_item, items_data, update_keys=()):
"""
@summary:
---------
@param tab_item: redis中items的表名
@param items_data: [item.to_dict] 数据
@param update_keys: 更新的字段
---------
@result:
"""
to_table = tools.get_info(tab_item, ":s_(.*?)_item$", fetch_one=True)
sql, datas = tools.make_batch_sql(
to_table,
items_data,
update_columns=update_keys or list(items_data[0].keys()),
)
update_count = self.to_db.add_batch(sql, datas)
if update_count is None:
log.error("更新表 %s 数据失败" % (to_table))
else:
msg = "共更新 %s 条数据 到 %s" % (update_count // 2, to_table)
if update_keys:
msg += " 更新字段为 {}".format(update_keys)
log.info(msg)
return update_count != None