485 lines
14 KiB
Python
485 lines
14 KiB
Python
#coding: utf-8
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# +-------------------------------------------------------------------
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# | YakPanel
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# +-------------------------------------------------------------------
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# | Copyright (c) 2015-2099 YakPanel(www.yakpanel.com) All rights reserved.
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# +-------------------------------------------------------------------
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# | Author: hwliang <hwl@yakpanel.com>
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# +-------------------------------------------------------------------
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import sqlite3
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import os,time,sys
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from typing import List, Optional
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os.chdir('/www/server/panel')
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if not 'class/' in sys.path:
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sys.path.insert(0,'class/')
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import public
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class Sql():
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#------------------------------
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# 数据库操作类 For sqlite3
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#------------------------------
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__DB_FILE = None # 数据库文件
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__DB_CONN = None # 数据库连接对象
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__DB_TABLE = "" # 被操作的表名称
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__OPT_WHERE = "" # where条件
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__OPT_LIMIT = "" # limit条件
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__OPT_ORDER = "" # order条件
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__OPT_FIELD = "*" # field条件
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__OPT_PARAM = () # where值
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__LOCK = '/dev/shm/sqlite_lock.pl'
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ERR_INFO = None
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__ENCRYPT_KEYS = [] # 新增：加密字段列表，默认空列表（无需加密）
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def __init__(self):
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self.__DB_FILE = 'data/default.db'
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def __enter__(self):
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return self
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def __exit__(self,exc_type,exc_value,exc_trackback):
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self.close()
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def __del__(self):
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self.close()
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def __GetConn(self):
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#取数据库对象
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try:
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if self.__DB_CONN is None:
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self.__DB_CONN = sqlite3.connect(self.__DB_FILE)
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self.__DB_CONN.text_factory = str
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# # 启用 WAL 模式
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# self.__DB_CONN.execute('PRAGMA journal_mode=WAL;')
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except Exception as ex:
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return "error: " + str(ex)
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def connect(self):
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#连接数据库
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self.__GetConn()
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return self
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def dbfile(self,name):
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#设置数据库文件
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if name[0] == '/':
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self.__DB_FILE = name
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else:
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self.__DB_FILE = 'data/' + name + '.db'
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return self
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def table(self,table):
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#设置表名
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self.__DB_TABLE = table
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return self
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def where(self,where,param):
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#WHERE条件
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if where:
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self.__OPT_WHERE = " WHERE " + where
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self.__OPT_PARAM = self.__to_tuple(param)
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return self
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def __to_tuple(self,param):
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#将参数转换为tuple
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if type(param) != tuple:
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if type(param) == list:
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param = tuple(param)
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else:
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param = (param,)
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return param
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def order(self,order):
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#ORDER条件
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if len(order):
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self.__OPT_ORDER = " ORDER BY "+order
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return self
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def limit(self,limit,offset = 0):
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#LIMIT条件
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if limit and not offset:
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self.__OPT_LIMIT = " LIMIT {}".format(limit)
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elif limit and offset:
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self.__OPT_LIMIT = " LIMIT {},{}".format(offset,limit)
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return self
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def field(self,field):
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#FIELD条件
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if len(field):
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self.__OPT_FIELD = field
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return self
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def select(self):
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self.ERR_INFO = None
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#查询数据集
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self.__GetConn()
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try:
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self.__get_columns()
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sql = "SELECT " + self.__OPT_FIELD + " FROM " + self.__DB_TABLE + self.__OPT_WHERE + self.__OPT_ORDER + self.__OPT_LIMIT
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result = self.__DB_CONN.execute(sql,self.__OPT_PARAM)
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data = result.fetchall()
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#构造字典系列
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if self.__OPT_FIELD != "*":
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fields = self.__format_field(self.__OPT_FIELD.split(','))
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tmp = []
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for row in data:
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i=0
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tmp1 = {}
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for key in fields:
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tmp1[key.strip('`')] = row[i]
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i += 1
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tmp.append(tmp1)
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del(tmp1)
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data = tmp
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del(tmp)
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else:
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#将元组转换成列表
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tmp = list(map(list,data))
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data = tmp
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del(tmp)
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self._close()
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return data
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except Exception as ex:
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ex_str = str(ex)
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self.ERR_INFO = ex_str
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return "error: " + str(ex)
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def get(self):
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self.__get_columns()
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return self.select()
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def __format_field(self,field):
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import re
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fields = []
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for key in field:
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s_as = re.search(r'\s+as\s+',key,flags=re.IGNORECASE)
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if s_as:
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as_tip = s_as.group()
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key = key.split(as_tip)[1]
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fields.append(key)
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return fields
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def __get_columns(self):
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if self.__OPT_FIELD == '*':
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tmp_cols = self.query('PRAGMA table_info('+self.__DB_TABLE+')',())
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cols = []
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for col in tmp_cols:
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if len(col) > 2: cols.append('`' + col[1] + '`')
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if len(cols) > 0: self.__OPT_FIELD = ','.join(cols)
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def getField(self,keyName):
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#取回指定字段
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try:
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result = self.field(keyName).select()
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if len(result) != 0:
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return result[0][keyName]
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return result
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except: return None
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def setField(self,keyName,keyValue):
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#更新指定字段
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return self.save(keyName,(keyValue,))
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def find(self):
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#取一行数据
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try:
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self.ERR_INFO = None
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result = self.limit("1").select()
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if len(result) == 1:
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return result[0]
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return result
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except Exception as ex:
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self.ERR_INFO = str(ex)
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return None
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def count(self):
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#取行数
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key="COUNT(*)"
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data = self.field(key).select()
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try:
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return int(data[0][key])
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except:
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return 0
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def add(self,keys,param):
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#插入数据
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self.write_lock()
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self.__GetConn()
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self.__DB_CONN.text_factory = str
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try:
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values=""
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for key in keys.split(','):
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values += "?,"
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values = values[0:len(values)-1]
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sql = "INSERT INTO "+self.__DB_TABLE+"("+keys+") "+"VALUES("+values+")"
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result = self.__DB_CONN.execute(sql,self.__to_tuple(param))
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id = result.lastrowid
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self._close()
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self.__DB_CONN.commit()
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self.rm_lock()
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return id
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except Exception as ex:
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return "error: " + str(ex)
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#插入数据
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def insert(self,pdata):
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if not pdata: return False
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keys,param = self.__format_pdata(pdata)
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return self.add(keys,param)
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#更新数据
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def update(self,pdata):
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if not pdata: return False
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keys,param = self.__format_pdata(pdata)
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return self.save(keys,param)
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#构造数据
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def __format_pdata(self,pdata):
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keys = pdata.keys()
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keys_str = ','.join(keys)
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param = []
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for k in keys: param.append(pdata[k])
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return keys_str,tuple(param)
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def addAll(self,keys,param):
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#插入数据
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self.write_lock()
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self.__GetConn()
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self.__DB_CONN.text_factory = str
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try:
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values=""
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for key in keys.split(','):
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values += "?,"
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values = values[0:len(values)-1]
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sql = "INSERT INTO "+self.__DB_TABLE+"("+keys+") "+"VALUES("+values+")"
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result = self.__DB_CONN.execute(sql,self.__to_tuple(param))
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self.rm_lock()
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return True
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except Exception as ex:
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return "error: " + str(ex)
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def commit(self):
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self._close()
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self.__DB_CONN.commit()
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def save(self,keys,param):
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#更新数据
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self.write_lock()
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self.__GetConn()
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self.__DB_CONN.text_factory = str
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try:
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opt = ""
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for key in keys.split(','):
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opt += key + "=?,"
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opt = opt[0:len(opt)-1]
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sql = "UPDATE " + self.__DB_TABLE + " SET " + opt+self.__OPT_WHERE
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#处理拼接WHERE与UPDATE参数
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tmp = list(self.__to_tuple(param))
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for arg in self.__OPT_PARAM:
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tmp.append(arg)
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self.__OPT_PARAM = tuple(tmp)
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result = self.__DB_CONN.execute(sql,self.__OPT_PARAM)
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self._close()
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self.__DB_CONN.commit()
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self.rm_lock()
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return result.rowcount
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except Exception as ex:
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return "error: " + str(ex)
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def delete(self,id=None):
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#删除数据
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self.write_lock()
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self.__GetConn()
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try:
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if id:
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self.__OPT_WHERE = " WHERE id=?"
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self.__OPT_PARAM = (id,)
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sql = "DELETE FROM " + self.__DB_TABLE + self.__OPT_WHERE
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result = self.__DB_CONN.execute(sql,self.__OPT_PARAM)
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self._close()
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self.__DB_CONN.commit()
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self.rm_lock()
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return result.rowcount
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except Exception as ex:
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return "error: " + str(ex)
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def execute(self,sql,param = ()):
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#执行SQL语句返回受影响行
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self.write_lock()
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self.__GetConn()
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try:
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result = self.__DB_CONN.execute(sql,self.__to_tuple(param))
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self.__DB_CONN.commit()
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self.rm_lock()
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return result.rowcount
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except Exception as ex:
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return "error: " + str(ex)
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#是否有锁
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def is_lock(self):
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return
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# n = 0
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# while os.path.exists(self.__LOCK):
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# n+=1
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# if n > 100:
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# self.rm_lock()
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# break
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# time.sleep(0.01)
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#写锁
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def write_lock(self):
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return
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# self.is_lock()
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# with open(self.__LOCK,'wb+') as f:
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# f.close()
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#解锁
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def rm_lock(self):
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return
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# if os.path.exists(self.__LOCK):
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# os.remove(self.__LOCK)
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def clear_files(self):
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"""
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@name 清理空间
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"""
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import psutil
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path = public.get_panel_path()
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res = psutil.disk_usage(path)
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limit = 512 * 1024
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if res.free > limit:
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return
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#清理安装日志
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log_path = '{}/logs/installed'.format(path)
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if os.path.exists(log_path):
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total = 0
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try:
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flist = []
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for f in os.listdir(log_path):
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sfile = '{}/{}'.format(log_path, f)
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if not os.path.isfile(sfile):
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continue
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flist.append(sfile)
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flist.sort(key=lambda x: os.path.getmtime(x), reverse=False)
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for f in flist:
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total += os.path.getsize(f)
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if total >= limit:
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os.remove(f)
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break
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os.remove(f)
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except:pass
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if total:
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print('Jointly released：{}'.format(public.to_size(total)))
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def query(self,sql,param = ()):
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self.ERR_INFO = None
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#执行SQL语句返回数据集
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self.__GetConn()
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try:
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result = self.__DB_CONN.execute(sql,self.__to_tuple(param))
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#将元组转换成列表
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data = list(map(list,result))
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return data
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except Exception as ex:
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self.ERR_INFO = str(ex)
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return "error: " + str(ex)
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def create(self,name):
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#创建数据表
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self.write_lock()
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self.__GetConn()
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script = public.readFile('data/' + name + '.sql')
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result = self.__DB_CONN.executescript(script)
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self.__DB_CONN.commit()
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self.rm_lock()
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return result.rowcount
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def fofile(self,filename):
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#执行脚本
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self.write_lock()
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self.__GetConn()
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script = public.readFile(filename)
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result = self.__DB_CONN.executescript(script)
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self.__DB_CONN.commit()
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self.rm_lock()
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return result.rowcount
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def _close(self):
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#清理条件属性
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self.__OPT_WHERE = ""
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self.__OPT_FIELD = "*"
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self.__OPT_ORDER = ""
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self.__OPT_LIMIT = ""
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self.__OPT_PARAM = ()
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def is_connect(self):
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#检查是否连接数据库
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if not self.__DB_CONN:
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return False
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return True
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def close(self):
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#释放资源
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try:
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self.__DB_CONN.close()
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self.__DB_CONN = None
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except:
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pass
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def db(self,name):
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# 设置数据库名称，用于判断数据库文件
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self.__DB_NAME = name
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return self
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def batch_add(self, keys: List[str], value_list: List[tuple]):
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# 批量插入数据
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self.clear_files()
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self.__GetConn()
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self.__DB_CONN.text_factory = str
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need_crypt = any(key in keys for key in self.__ENCRYPT_KEYS)
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keys_str = ",".join(["`{}`".format(key) for key in keys])
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for idx, param in enumerate(value_list):
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if len(param) != len(keys):
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raise public.PanelError("The data length is inconsistent with the field length")
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if need_crypt:
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value_list[idx] = self.en_crypt(keys_str,param)
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try:
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values_temp=",".join(["?" for _ in range(len(keys))])
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sql = "INSERT INTO " + self.__DB_TABLE + "(" + keys_str + ") " + "VALUES(" + values_temp + ")"
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self.__DB_CONN.executemany(sql, value_list)
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self._close()
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self.__DB_CONN.commit()
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return True
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except Exception as ex:
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raise public.PanelError("Database insertion error：" + "error: " + str(ex))
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# return "error: " + str(ex)
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def batch_insert(self, data_list:List[dict]):
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keys = list(data_list[0].keys())
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value_list = []
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try:
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for items in data_list:
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if not isinstance(items, dict):
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raise public.PanelError("Data type error")
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value_list.append(tuple(items[key] for key in keys))
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except:
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raise public.PanelError("Data type error")
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return self.batch_add(keys, value_list)
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