问轻量云4次快照备份，求大神修改？

求大神修改快照函数 让他能备份4次，且每次触发只删除最早那个

目前问题，能备份4次但是每次删除的是第二个

import json

import os

import time

from tencentcloud.common import credential

from tencentcloud.common.profile.client_profile import ClientProfile

from tencentcloud.common.profile.http_profile import HttpProfile

from tencentcloud.common.exception.tencent_cloud_sdk_exception import TencentCloudSDKException

from tencentcloud.lighthouse.v20200324 import lighthouse_client, models

def main(SecretId, SecretKey, region, InstanceIds, Instanceidx=1):

"""

GOGO

:param SecretId: str 腾讯云账号SecretId

:param SecretKey: str 腾讯云账号SecretKey

:param region: str 实例地域

:param InstanceIds: str 实例ID

param Instanceidx: int 0:删除最新的保留最早的备份，这样可以有一个固定备份，1:删除最早

"""

get_rest = get_info(SecretId, SecretKey, region, InstanceIds)

if get_rest != False:

TotalCount = get_rest['TotalCount']

# 快照数

if TotalCount < 3:

# 直接备份

CreateInstanceSnapshot(SecretId, SecretKey, region, InstanceIds)

elif TotalCount == 3:

# 删除之前较早一个备份,就是列表里的第二个,状态需要正常才能删除

SnapshotState = (get_rest['SnapshotSet'][1]['SnapshotState'])

if SnapshotState == 'NORMAL':

SnapshotId = (get_rest['SnapshotSet'][1]['SnapshotId'])

DeleteSnapshots_re = DeleteSnapshots(SecretId, SecretKey, SnapshotId, region)

if DeleteSnapshots_re != False:

# 删除之前一个后，再进行备份

print('已经删除完成快照ID为{0}的快照，现在准备开始备份实例'.format(SnapshotId))

CreateInstanceSnapshot(SecretId, SecretKey, region, InstanceIds)

else:

print('当前快照数量存在问题，请登录腾讯云后台检查并删除多余的快照后操作')

time.sleep(5)

exit()

def CreateInstanceSnapshot(SecretId, SecretKey, region, InstanceIds):

"""

创建快照

"""

try:

cred = credential.Credential(SecretId, SecretKey)

httpProfile = HttpProfile()

httpProfile.endpoint = "lighthouse.tencentcloudapi.com"

clientProfile = ClientProfile()

clientProfile.httpProfile = httpProfile

client = lighthouse_client.LighthouseClient(cred, region, clientProfile)

req = models.CreateInstanceSnapshotRequest()

params = {

"InstanceId": InstanceIds

}

req.from_json_string(json.dumps(params))

resp = client.CreateInstanceSnapshot(req)

resp_re = json.loads(resp.to_json_string())

SnapshotId = resp_re['SnapshotId']

print('轻量云快照备份完成，快照ID为：{0},程序在5秒钟后关闭'.format(SnapshotId))

time.sleep(5)

#exit()

except TencentCloudSDKException as err:

print(err)

return False

def DeleteSnapshots(SecretId, SecretKey, SnapshotId, region):

"""

删除快照

"""

try:

cred = credential.Credential(SecretId, SecretKey)

httpProfile = HttpProfile()

httpProfile.endpoint = "lighthouse.tencentcloudapi.com"

clientProfile = ClientProfile()

clientProfile.httpProfile = httpProfile

client = lighthouse_client.LighthouseClient(cred, region, clientProfile)

req = models.DeleteSnapshotsRequest()

params = {

"SnapshotIds": [SnapshotId]

}

req.from_json_string(json.dumps(params))

resp = client.DeleteSnapshots(req)

return json.loads(resp.to_json_string())

except TencentCloudSDKException as err:

print(err)

return False

def get_info(SecretId, SecretKey, region, InstanceIds):

"""

获取快照信息

:param SecretId: str 腾讯云账号SecretId

:param SecretKey: str 腾讯云账号SecretKey

:param region: str 实例地域

:param InstanceIds: str 实例ID

:return: json 腾讯云实例流量情况

"""

try:

cred = credential.Credential(SecretId, SecretKey)

httpProfile = HttpProfile()

httpProfile.endpoint = "lighthouse.tencentcloudapi.com"

clientProfile = ClientProfile()

clientProfile.httpProfile = httpProfile

client = lighthouse_client.LighthouseClient(cred, region, clientProfile)

req = models.DescribeSnapshotsRequest()

params = {

"Filters": [

{

"Name": "instance-id",

"Values": [ InstanceIds ]

}

]

}

req.from_json_string(json.dumps(params))

resp = client.DescribeSnapshots(req)

return json.loads((resp.to_json_string()))

except TencentCloudSDKException as err:

print(err)

return False

def main_handler(event, context):

"""

腾讯云API库安装

pip install -i https://mirrors.tencent.com/pypi/simple/ --upgrade tencentcloud-sdk-python

腾讯云账号ID获取地址

https://console.cloud.tencent.com/cam/capi

实例地域

"ap-beijing", "ap-chengdu", "ap-guangzhou", "ap-hongkong", "ap-nanjing", "ap-shanghai", "ap-singapore", "ap-tokyo", "eu-moscow", "na-siliconvalley"

"""

# SecretId

SecretId = os.environ.get('SecretId')

# SecretKey

SecretKey = os.environ.get('SecretKey')

# 【格式】实例地域1:轻量云实例ID1,轻量云实例ID2;实例地域2:轻量云实例ID3,轻量云实例ID4

Regions_InstanceIds = os.environ.get('Regions_InstanceIds')

# 0: 删除最新的保留最早的备份，这样可以有一个固定备份，1: 删除最早,默认 1

Instanceidx = os.environ.get('Instanceidx')

# 执行

nowtime = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())

print('---------' + str(nowtime) + ' 程序开始执行------------')

for r in Regions_InstanceIds.split(";"):

Region = r.split(":")[0]

InstanceIds = r.split(":")[1]

for id in InstanceIds.split(","):

print('Region: '+Region+'InstanceId: '+id+'\n')

main(SecretId, SecretKey, Region, id, int(Instanceidx))

return True