import telnetlib

# 创建telnet类对象
conn = telnetlib.Telnet()
# 连接dubbo接口地址
conn.open(host, port)
#1.cmd命令格式: 接口全名字.方法名(参数1，参数2，参数3...参数n) 2.write方法就是通过telnet发起dubbo请求，参数和单独使用telnet一致
conn.write('invoke {}\n'.format(cmd).encode())
# 获取telnet返回信息
conn.read_until('dubbo>'.encode()).decode().split('\r\n')[0]

class Dubbo(object):
  '''
  方法调用案例：
  conn = Dubbo('127.0.0.1', 18080)
  #格式: 接口全名字.方法名(参数1，参数2，参数3...参数n)
  cmd = 'xxx.xxx.xx.xxxx.xxxx.xxxx.xxxx(268,"sz",1587288615000,1587634215000,0,10)'
  response = json.loads(conn.reuqest(cmd))
  '''
  dubbo = 'dubbo>'

  def __init__(self,host,port):
    self.conn = telnetlib.Telnet()
    self.conn.open(host, port)

  def request(self,cmd):
    self.conn.write('invoke {}\n'.format(cmd).encode())
    data = self.conn.read_until(self.dubbo.encode()).decode().split('\r\n')[0]

    return data