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db.py
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db.py
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import random
import redis
from cookiespool.config import *
from cookiespool.error import *
class RedisClient(object):
def __init__(self, host=REDIS_HOST, port=REDIS_PORT, password=REDIS_PASSWORD):
"""
初始化Redis连接
:param host: 地址
:param port: 端口
:param password: 密码
"""
if password:
self._db = redis.Redis(host=host, port=port, password=password)
else:
self._db = redis.Redis(host=host, port=port)
self.domain = REDIS_DOMAIN
self.name = REDIS_NAME
def _key(self, key):
"""
得到格式化的key
:param key: 最后一个参数key
:return:
"""
return "{domain}:{name}:{key}".format(domain=self.domain, name=self.name, key=key)
def set(self, key, value):
"""
设置键值对
:param key:
:param value:
:return:
"""
raise NotImplementedError
def get(self, key):
"""
根据键名获取键值
:param key:
:return:
"""
raise NotImplementedError
def delete(self, key):
"""
根据键名删除键值对
:param key:
:return:
"""
raise NotImplementedError
def keys(self):
"""
得到所有的键名
:return:
"""
return self._db.keys('{domain}:{name}:*'.format(domain=self.domain, name=self.name))
def flush(self):
"""
清空数据库, 慎用
:return:
"""
self._db.flushall()
class CookiesRedisClient(RedisClient):
def __init__(self, host=REDIS_HOST, port=REDIS_PORT, password=REDIS_PASSWORD, domain='cookies', name='default'):
"""
管理Cookies的对象
:param host: 地址
:param port: 端口
:param password: 密码
:param domain: 域, 如cookies, account等
:param name: 名称, 一般为站点名, 如 weibo, 默认 default
"""
RedisClient.__init__(self, host, port, password)
self.domain = domain
self.name = name
def set(self, key, value):
try:
self._db.set(self._key(key), value)
except:
raise SetCookieError
def get(self, key):
try:
return self._db.get(self._key(key)).decode('utf-8')
except:
return None
def delete(self, key):
try:
print('Delete', key)
return self._db.delete(self._key(key))
except:
raise DeleteCookieError
def random(self):
"""
随机得到一Cookies
:return:
"""
try:
keys = self.keys()
return self._db.get(random.choice(keys))
except:
raise GetRandomCookieError
def all(self):
"""
获取所有账户, 以字典形式返回
:return:
"""
try:
for key in self._db.keys('{domain}:{name}:*'.format(domain=self.domain, name=self.name)):
group = key.decode('utf-8').split(':')
if len(group) == 3:
username = group[2]
yield {
'username': username,
'cookies': self.get(username)
}
except Exception as e:
print(e.args)
raise GetAllCookieError
def count(self):
"""
获取当前Cookies数目
:return: 数目
"""
return len(self.keys())
class AccountRedisClient(RedisClient):
def __init__(self, host=REDIS_HOST, port=REDIS_PORT, password=REDIS_PASSWORD, domain='account', name='default'):
RedisClient.__init__(self, host, port, password)
self.domain = domain
self.name = name
def set(self, key, value):
try:
return self._db.set(self._key(key), value)
except:
raise SetAccountError
def get(self, key):
try:
return self._db.get(self._key(key)).decode('utf-8')
except:
raise GetAccountError
def all(self):
"""
获取所有账户, 以字典形式返回
:return:
"""
try:
for key in self._db.keys('{domain}:{name}:*'.format(domain=self.domain, name=self.name)):
group = key.decode('utf-8').split(':')
if len(group) == 3:
username = group[2]
yield {
'username': username,
'password': self.get(username)
}
except Exception as e:
print(e.args)
raise GetAllAccountError
def delete(self, key):
"""
通过用户名删除用户
:param key:
:return:
"""
try:
return self._db.delete(self._key(key))
except:
raise DeleteAccountError
if __name__ == '__main__':
"""
conn = CookiesRedisClient()
conn.set('name', 'Mike')
conn.set('name2', 'Bob')
conn.set('name3', 'Amy')
print(conn.get('name'))
conn.delete('name')
print(conn.keys())
print(conn.random())
"""
# 测试
conn = AccountRedisClient(name='weibo')
conn2 = AccountRedisClient(name='mweibo')
accounts = conn.all()
for account in accounts:
conn2.set(account['username'], account['password'])