# coding:utf8
'''
Created on 2017年8月9日

@author: Martonyang
'''
import sys
import MySQLdb
from Test.test_cursor import sql

class TransferMoney(object):
    def __init__(self,conn):
        self.conn = conn
    def check_acct_available(self,acctid):
        cursor = self.conn.cursor()
        try:
            sql = ' select * from account where acctid=%s ' %acctid
            cursor.execute(sql)
            print "check_acct_available: " + sql
            rs = cursor.fetchall()
            if len(rs) != 1:
                raise Exception("账号%s 不存在" % acctid)
        finally:
            cursor.close()
    def has_enough_money(self,acctid,money):
        cursor = self.conn.cursor()
        try:
            sql = ' select * from account where acctid=%s and money > %s ' %(acctid, money)
            print "has_enough_money: " + sql
            cursor.execute(sql)
            rs = cursor.fetchall()
            if len(rs) != 1:
                raise Exception("账号%s没有足够的钱" % acctid)
        finally:
            cursor.close()
    def reduce_money(self,accid,money):
        cursor = self.conn.cursor()
        try:
            sql = ' update account set money = money - %s where acctid = %s ' %(money, accid)
            cursor.execute(sql)
            print "reduce_money: " + sql
            rs = cursor.fetchall()
            if cursor.rowcount != 1:
                raise Exception("账号%s减款失败" % acctid)
        finally:
            cursor.close()
    def add_money(self,accid,money):
        cursor = self.conn.cursor()
        try:
            sql = ' update account set money = money + %s where acctid = %s ' %(money, accid)
            cursor.execute(sql)
            print "add_money: " + sql
            rs = cursor.fetchall()
            if cursor.rowcount != 1:
                raise Exception("账号%s加款失败" % acctid)
        finally:
            cursor.close()
    def transfer(self,source_acctid,target_acctid,money):
        try:
            self.check_acct_available(source_acctid)
            self.check_acct_available(target_acctid)
            self.has_enough_money(source_acctid,money)
            self.reduce_money(source_acctid,money)
            self.add_money(target_acctid,money)
            self.conn.commit()
        except Exception as e:
            self.conn.rollback()
            raise e
if __name__ == "__main__":
    source_acctid = sys.argv[1]
    target_acctid = sys.argv[2]
    money = sys.argv[3]
    conn = MySQLdb.connect(host='127.0.0.1',user='root',passwd='123456',port=3306,db='test')
    tr_money = TransferMoney(conn)
    try:
        tr_money.transfer(source_acctid,target_acctid,money)
    except Exception as e:
        print "出现问题: " + str(e)
    finally:
        conn.close();
        
    
1a936f0e3ca14e24330b47f2edf8d5da090b94b3
# coding:utf8
'''
Created on 2017年8月9日

@author: Martonyang
'''
import sys
import MySQLdb
from Test.test_cursor import sql

class TransferMoney(object):
    def __init__(self,conn):
        self.conn = conn
    def check_acct_available(self,acctid):
        cursor = self.conn.cursor()
        try:
            sql = ' select * from account where acctid=%s ' %acctid
            cursor.execute(sql)
            print "check_acct_available: " + sql
            rs = cursor.fetchall()
            if len(rs) != 1:
                raise Exception("账号%s 不存在" % acctid)
        finally:
            cursor.close()
    def has_enough_money(self,acctid,money):
        cursor = self.conn.cursor()
        try:
            sql = ' select * from account where acctid=%s and money > %s ' %(acctid, money)
            print "has_enough_money: " + sql
            cursor.execute(sql)
            rs = cursor.fetchall()
            if len(rs) != 1:
                raise Exception("账号%s没有足够的钱" % acctid)
        finally:
            cursor.close()
    def reduce_money(self,accid,money):
        cursor = self.conn.cursor()
        try:
            sql = ' update account set money = money - %s where acctid = %s ' %(money, accid)
            cursor.execute(sql)
            print "reduce_money: " + sql
            rs = cursor.fetchall()
            if cursor.rowcount != 1:
                raise Exception("账号%s减款失败" % acctid)
        finally:
            cursor.close()
    def add_money(self,accid,money):
        cursor = self.conn.cursor()
        try:
            sql = ' update account set money = money + %s where acctid = %s ' %(money, accid)
            cursor.execute(sql)
            print "add_money: " + sql
            rs = cursor.fetchall()
            if cursor.rowcount != 1:
                raise Exception("账号%s加款失败" % acctid)
        finally:
            cursor.close()
    def transfer(self,source_acctid,target_acctid,money):
        try:
            self.check_acct_available(source_acctid)
            self.check_acct_available(target_acctid)
            self.has_enough_money(source_acctid,money)
            self.reduce_money(source_acctid,money)
            self.add_money(target_acctid,money)
            self.conn.commit()
        except Exception as e:
            self.conn.rollback()
            raise e
if __name__ == "__main__":
    source_acctid = sys.argv[1]
    target_acctid = sys.argv[2]
    money = sys.argv[3]
    conn = MySQLdb.connect(host='127.0.0.1',user='root',passwd='123456',port=3306,db='test')
    tr_money = TransferMoney(conn)
    try:
        tr_money.transfer(source_acctid,target_acctid,money)
    except Exception as e:
        print "出现问题: " + str(e)
    finally:
        conn.close();
        
    