[雪峰磁针石博客]python工具库介绍-dubbo：通过telnet接口访问dubbo服务
## 简介
dubbo服务发布之后，我们可以利用telnet命令进行调试、管理。更多资料参见 [Telnet命令参考手册](http://alibaba.github.io/dubbo-doc-static/Telnet+Command+Reference-zh-showComments=true&showCommentArea=true.htm)
telnet 调用示例：
```python
$ telnet 172.17.103.110 9097
Trying 172.17.103.110...
Connected to 172.17.103.110.
Escape character is '^]'.
dubbo>ls com.oppo.sso.service.onekey.IOnekeyRegister
register
dubbo>invoke com.oppo.sso.service.onekey.IOnekeyRegister.register({"applicationKey":"mac","imei":"","mobile":"13244448888","createIP":"127.0.0.1","createBy":"172.17.0.1"})
{"configCountry":null,"userIdLong":0,"appPackage":null,"appVersion":null,"accountName":null,"romVersion":null,"resultCode":3001,"thirdStatus":null,"registerType":0,"sendChannel":null,"operator":null,"manufacturer":null,"password":null,"osVersion":null,"lock":false,"model":null,"visitorLocked":false,"OK":false,"brand":null,"email":null,"createIP":null,"deny":false,"encryptEmail":null,"sessionKey":null,"thirdId":null,"passwordOriginal":null,"mobile":null,"applicationKey":null,"thirdpartyOk":false,"userAgent":null,"userName":null,"resultDesc":"应用不存在","userId":0,"encryptMobile":null,"emailStatus":null,"createBy":null,"freePwd":false,"changeTimes":0,"createTime":null,"mobileStatus":null,"oldLock":false,"codeTimeout":null,"lastUpdate":null,"imei":null,"sessionTimeout":0,"sdkVersion":null,"networkID":0,"status":null}
elapsed: 98 ms.
dubbo>
```
## Python实现
源码：
```python
"""
Name: dubbo.py
Tesed in python3.5
"""
import json
import telnetlib
import socket
class Dubbo(telnetlib.Telnet):
prompt = 'dubbo>'
coding = 'utf-8'
def __init__(self, host=None, port=0,
timeout=socket._GLOBAL_DEFAULT_TIMEOUT):
super().__init__(host, port)
self.write(b'\n')
def command(self, flag, str_=""):
data = self.read_until(flag.encode())
self.write(str_.encode() + b"\n")
return data
def invoke(self, service_name, method_name, arg):
command_str = "invoke {0}.{1}({2})".format(
service_name, method_name, json.dumps(arg))
self.command(Dubbo.prompt, command_str)
data = self.command(Dubbo.prompt, "")
data = json.loads(data.decode(Dubbo.coding,
errors='ignore').split('\n')[0].strip())
return data
if __name__ == '__main__':
conn = Dubbo('172.17.103.110', 9097)
json_data = {
"applicationKey":"mac",
"imei":"",
"mobile":"13244448888",
"createIP":"127.0.0.1",
"createBy":"172.17.0.1"
}
result = conn.invoke(
"com.oppo.sso.service.onekey.IOnekeyRegister",
"register",
json_data
)
print(result)
```
执行结果：
```python
# python3 dubbo.py
{'manufacturer': None, 'applicationKey': None, 'OK': False, 'codeTimeout': None, 'password': None, 'encryptEmail': None, 'passwordOriginal': None, 'thirdId': None, 'emailStatus': None, 'freePwd': False, 'sessionTimeout': 0, 'createTime': None, 'osVersion': None, 'lastUpdate': None, 'email': None, 'sdkVersion': None, 'registerType': 0, 'sendChannel': None, 'visitorLocked': False, 'createIP': None, 'thirdStatus': None, 'encryptMobile': None, 'networkID': 0, 'resultCode': 3001, 'brand': None, 'changeTimes': 0, 'userAgent': None, 'imei': None, 'operator': None, 'romVersion': None, 'model': None, 'lock': False, 'sessionKey': None, 'configCountry': None, 'deny': False, 'userIdLong': 0, 'resultDesc': '应用不存在', 'status': None, 'createBy': None, 'thirdpartyOk': False, 'appPackage': None, 'appVersion': None, 'accountName': None, 'userId': 0, 'oldLock': False, 'userName': None, 'mobile': None, 'mobileStatus': None}
```
更复杂的例子。
源码：
```python
import json
import telnetlib
import socket
class Dubbo(telnetlib.Telnet):
prompt = 'dubbo>'
coding = 'gbk'
def __init__(self, host=None, port=0,
timeout=socket._GLOBAL_DEFAULT_TIMEOUT):
super().__init__(host, port)
self.write(b'\n')
def command(self, flag, str_=""):
data = self.read_until(flag.encode())
self.write(str_.encode() + b"\n")
return data
def invoke(self, service_name, method_name, arg):
command_str = "invoke {0}.{1}({2})".format(
service_name, method_name, json.dumps(arg))
self.command(Dubbo.prompt, command_str)
data = self.command(Dubbo.prompt, "")
data = json.loads(data.decode(Dubbo.coding,
errors='ignore').split('\n')[0].strip())
return data
if __name__ == '__main__':
conn = Dubbo('183.131.22.99', 21881)
content = {
"sign": "FKeKnMEPybHujjBTzz11BrulB5av7pLhJpk=",
"partnerOrder": "0511e0d38f334319a96920fa02be02a7",
"productDesc": "hello",
"paySuccessTime": "2016-08-25 18:33:04",
"price": "1",
"count": "1",
"attach": "from_pay_demo",
"date": "20160825",
}
content_json = json.dumps(content).replace('"', '\\"')
json_data = {
"requestId": "0511e0d38f334319a96920fa02be02a7",
"reqUrl": 'http://www.oppo.com',
"httpReqType": "POST",
"headerMap": None,
"reqContent": content_json,
"appId": "10001",
"productName": "test",
"timeStamp": "1472121184957",
"partnerId": "2031",
"signType": "MD5",
"sign": "23B621FBBF887373C65E553C2222258F",
"successResult": "OK",
}
result = conn.invoke(
"com.oppo.pay.notify.api.facade.NotifyApplyService",
"httpNotify",
json_data
)
print(result)
```
执行结果：
```python
$ python3 dubbo.py
{'resMsg': 'ǩ', 'data': None, 'errorDetail': 'sign check fail!', 'resCode': '100003', 'success': False}
```
## 待改进
* 进行多个项目的实验，增加异常处理
## 参考资料
- [本文最新版本地址](https://china-testing.github.io/python3_lib_dubbo.html)
- [本文涉及的python测试开发库](https://github.com/china-testing/python-api-tesing) 谢谢点赞！
- [本文相关海量书籍下载](https://github.com/china-testing/python-api-tesing/blob/master/books.md)
- [本文源码地址](https://github.com/china-testing/python-api-tesing/tree/master/python3_libraries/_dubbo)
