auto_relay.py

import pulsectl
import time
import paramiko
import traceback

while 1:
   try:
      pulse = pulsectl.Pulse('my-client-name')

      ssh = paramiko.SSHClient()
      ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
      ssh.connect("aprs.foxden", username="pi")

      on_command = "sudo /root/MotorShield/rf.py icom"
      off_command = "sudo /root/MotorShield/rf.py digi"

      state = False

      while 1:
         time.sleep(1)
         if [x for x in pulse.sink_input_list() if "wfview" in x.proplist['application.name']]:
            if state == False:
               print("detected connection")
               ssh_stdin, ssh_stdout, ssh_stderr = ssh.exec_command(on_command)
               print(ssh_stdout.readlines())
               state = True
         else:
            if state == True:
               print("lost connection")
               ssh_stdin, ssh_stdout, ssh_stderr = ssh.exec_command(off_command)
               print(ssh_stdout.readlines())
               state = False
   except:
      traceback.print_exc()
      time.sleep(5)