#二次更新 利用DNSPodAPI实现服务器DDNS解析

更新说明：更新了上一篇文章：利用DNSPodAPI实现服务器DDNS解析中存留的更新卡住问题。

前面的文章中，我们使用了此脚本来进行DDNS更新，但是我发现了一个问题，更新后，程序未退出，虽然放在后台影响不大，但是省一点内存是一点。

脚本：

#!/usr/bin/env python
# -*- coding:utf-8 -*-
import socket
import requests
import time
import logging
logging.basicConfig(level=logging.WARNING)
logger = logging.getLogger(__name__)
class DNSPod(object):
"""DNSPod ddns application."""
def __init__(self, params):
"""Initialize with params."""
self._params = params
def run(self, params=None):
if params is None:
params = self._params
public_ip = self.get_public_ip()
# get record_id of sub_domain
record_list = self.get_record_list(params)
if record_list['code'] == '10':
# create record for empty sub_domain
record_id = self.create_record(params, public_ip)
remote_ip = public_ip
elif record_list['code'] == '1':
# get record id
record_id = record_list['record_id']
remote_ip = record_list['ip_value']
else:
logger.error('!!!can not get record_id!!!')
return -1
params['record_id'] = record_id
current_ip = remote_ip
while True:
try:
public_ip = self.get_public_ip()
if current_ip != public_ip:
logger.warning("update IP from %s to %s" % (current_ip, public_ip))
if self.ddns(params, public_ip):
current_ip = public_ip
else:
logger.info("IP remains %s" % public_ip)
except Exception as e:
logger.error(e)
            exit()
pass
time.sleep(300)
def get_public_ip(self):
"""Get public ip via dnspod."""
sock = socket.create_connection(('ns1.dnspod.net', 6666), timeout=30)
ip = sock.recv(16)
sock.close()
return ip.decode('utf-8')
def get_record_list(self, params):
"""Get record list.
https://www.dnspod.cn/docs/records.html#record-list
:return: dict of code, record_id and IP value
"""
record_list_url = 'https://dnsapi.cn/Record.List'
r = requests.post(record_list_url, data=params)
code = r.json()['status']['code']
record_id = r.json()['records'][0]['id'] if code == '1' else ""
ip_value = r.json()['records'][0]['value'] if code == '1' else ""
return dict(code=code, record_id=record_id, ip_value=ip_value)
def create_record(self, params, ip):
"""Create record if not created before.
https://www.dnspod.cn/docs/records.html#record-create
:return: record_id of new record
"""
params['value'] = ip
record_create_url = 'https://dnsapi.cn/Record.Create'
r = requests.post(record_create_url, data=params)
logger.warning('create new record %s.%s with IP %s' % (params['sub_domain'], params['domain'], ip))
assert r.json()['status']['code'] == '1'
record_id = r.json()['record']['id']
return record_id
def ddns(self, params, ip):
"""Update ddns ip.
https://www.dnspod.cn/docs/records.html#dns
"""
params['value'] = ip
ddns_url = 'https://dnsapi.cn/Record.Ddns'
r = requests.post(ddns_url, data=params)
logger.info('status: %s, reason: %s' % (r.status_code, r.reason))
return r.json()['status']['code'] == '1'
def main():
# initialize params
# Use Token, check https://support.dnspod.cn/Kb/showarticle/tsid/227
 ID = '请输入id'  # replace with your ID
Token = '请输入token'  # replace with your Token
params = dict(
login_token=("%s,%s" % (ID, Token)),
format='json',
domain='请输入主域名',  # replace with your domain
sub_domain='需要解析的二级域名名字',  # replace with your sub_domain
record_type='A',
record_line='默认'
)
dnspod = DNSPod(params)
dnspod.run()
if __name__ == "__main__":
main()

简单解释下，就是加一个exit()即可退出，请注意蓝色文字，其他配置信息请参考前一篇文章进行处理。