python 下载阿里云mysql的备份文件及binlog到本地

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# !/usr/bin/python
# coding=utf-8

import json
import os
import datetime
import urllib
from aliyunsdkcore import client
from aliyunsdkrds.request.v20140815.DescribeBackupsRequest import DescribeBackupsRequest
from aliyunsdkrds.request.v20140815.DescribeBinlogFilesRequest import DescribeBinlogFilesRequest


class PullBackupfile():
    def __init__(self,accessid,key,region,instanceid):
        self.accessid = accessid
        self.key = key
        self.region = region
        self.instanceid = instanceid
    #自动创建备份目录
    def mkdir(self):
        now = datetime.date.today() - datetime.timedelta(days=1)
        path = 'D:\databack\%s' % now
        data_path = os.path.join(path, 'data')
        bin_log_path = os.path.join(path, 'binlog')
        path_list = [path, data_path, bin_log_path]
        for i in path_list:
            if os.path.isdir(i):
                continue
            else:
                os.popen('mkdir %s' % i)
        return data_path,bin_log_path

    def login(self):
        clt = client.AcsClient(self.accessid,self.key,self.region)
        return clt

    # 阿里云返回的数据为UTC时间，因此要转换为东八区时间。2013-08-15T12:00:00Z为北京时间2013年8月15日20点0分0秒。
    def backup_time(self,name):
        now = datetime.datetime.now()
        #零点
        end_time = now - datetime.timedelta(hours=now.hour + 8, minutes=now.minute, seconds=now.second,
                                            microseconds=now.microsecond)
        start_time = end_time - datetime.timedelta(days=1)
        #时间格式不相同
        if name == 'datafile':
            starttime = start_time.strftime('%Y-%m-%dT%H:%MZ')
            endtime = end_time.strftime('%Y-%m-%dT%H:%MZ')
        if name == 'binlog':
            starttime = start_time.strftime('%Y-%m-%dT%H:%M:%SZ')
            endtime = end_time.strftime('%Y-%m-%dT%H:%M:%SZ')
        return starttime,endtime

def download_rds_backfile(self):
    data_path,bin_log_path = self.mkdir()
    starttime,endtime = self.backup_time('datafile')
    try:
        req_bakup = DescribeBackupsRequest()
        req_bakup.set_DBInstanceId(self.instanceid)
        req_bakup.set_accept_format('json')
        req_bakup.set_StartTime(starttime)
        req_bakup.set_EndTime(endtime)
        clt  = self.login()
        backup = clt.do_action_with_exception(req_bakup)
        jsload = json.loads(backup)
        num = jsload["PageRecordCount"]
        print("backfiles:" + str(num))
        i = 0
        back_path = os.path.join(data_path,'')
        while i < num:

            bak_url = jsload["Items"]["Backup"][i]["BackupDownloadURL"]
            bak_host = jsload["Items"]["Backup"][i]["HostInstanceID"]
            bak_id = jsload["Items"]["Backup"][i]["BackupId"]
            print ("BackupId:" + str(bak_id), "HostInstanceID:" + str(bak_host), "downloadurl:" + bak_url)
            save_name = back_path + bak_url.split('?')[0].split('/')[-1]
            u = urllib.request.urlopen(bak_url)
            f_header = u.info()
            print(f_header)
            bak_size = int(f_header["Content-Length"])

            print ("backup file size: %s M ,fime nema: %s" % (bak_size / 1024 / 1024, save_name))

            with open(save_name, "wb") as f:

                file_size_dl = 0
                block_sz = 8192
                while True:
                    buffer = u.read(block_sz)
                    if not buffer:
                        break

                    file_size_dl += len(buffer)
                    f.write(buffer)
                    status = r"%10d  [%3.2f%%]" % (file_size_dl, file_size_dl * 100. / bak_size)
                    # status = status + chr(8) * (len(status) + 1)
                    print (status)
            i = i + 1
            print ("download complet!")
    except:
        print("无备份")

    # 备份binlog 下载到本地服务器
    def download_rds_binlog(self):
        data_path, bin_log_path = self.mkdir()
        print(bin_log_path)
        starttime,endtime = self.backup_time('binlog')
        try:
            request = DescribeBinlogFilesRequest()
            request.set_DBInstanceId(self.instanceid)
            request.set_accept_format('json')
            request.set_StartTime(starttime)
            request.set_EndTime(endtime)
            clt = self.login()
            binlog_backup = clt.do_action_with_exception(request)
            jsload = json.loads(binlog_backup)
            num = jsload["TotalRecordCount"]
            print("backfiles:" + str(num))
            i = 0
            back_path = os.path.join(bin_log_path,'')
            print(back_path)
            while i < num:
                bak_url = jsload["Items"]["BinLogFile"][i]["DownloadLink"]
                bak_host = jsload["Items"]["BinLogFile"][i]["HostInstanceID"]
                bak_name = jsload["Items"]["BinLogFile"][i]["LogFileName"]
                bak_size = jsload["Items"]["BinLogFile"][i]["FileSize"]
                bak_time = datetime.datetime.strptime(jsload["Items"]["BinLogFile"][i]['LogEndTime'],'%Y-%m-%dT%H:%M:%SZ')
                # print("LogFileName:" + str(bak_name), "HostInstanceID:" + str(bak_host), "downloadurl:" + bak_url)
                save_name = back_path + bak_name + '_' + str(bak_time).replace(' ','').replace(':','').replace('-','')
                # print("backup file size: %s M ,fime nema: %s" % (bak_size / 1024 / 1024, save_name))
                with open(save_name, "wb") as f:
                    urllib.request.urlretrieve(bak_url,save_name)
                i = i + 1
                print("download complet!")
        except:
            print('无备份')
    #删除超过7天的文件夹及子目录,windows 命令
    def remove_file(self):
        os.popen('forfiles /p "D:\databack" /d -7 /c "cmd /c echo deleting @path  ... && rd @path /s /q" ')

if __name__ == '__main__':
    pull_file = PullBackupfile('accessid','key','region','instanceid')

    pull_file.download_rds_backfile()
    pull_file.download_rds_binlog()
    pull_file.remove_file()