import subprocess
import urllib.request
import webbrowser
from threading import Timer
class Watchdog:
def __init__(self, timeout, userHandler=None): # timeout in seconds
self.timeout = timeout
self.handler = userHandler if userHandler is not None else self.defaultHandler
self.timer = Timer(self.timeout, self.handler)
def reset(self):
self.timer.cancel()
self.timer = Timer(self.timeout, self.handler)
def stop(self):
self.timer.cancel()
def defaultHandler(self):
raise self
def test_vpn():
fo = open("test_vpn.html", "w")
fo.write("<html>")
fo.write("\n")
fo.write("<head>Test script for vpn connection based on IKEv2</head>")
fo.write("\n")
fo.write("<body>")
fo.write("\n")
fo.write("<p>Initiator-[#brown]>Responder: VID+phase1 policies</p>")
test_steps(1)
fo.write("\n")
fo.write("<img src=\"IKEv2_flow.png\" alt=\"Oups, something went wrong with IKEv2_flow\">")
fo.write("\n")
fo.write("</body>")
fo.write("\n")
fo.write("</html>")
fo.close()
filename = webbrowser.open_new_tab('test_vpn.html')
webbrowser.open_new_tab(filename)
def test_steps(step):
if (step==1):
fo2 = open("IKEv2_flow.txt", "w")
fo2.write("@startuml")
fo2.write("\n")
fo2.write("title VPN connection based on IKEv2")
fo2.write("\n")
fo2.write("autonumber")
fo2.write("\n")
fo2.write("participant Initiator as Initiator")
fo2.write("\n")
fo2.write("participant Responder as Responder")
fo2.write("\n")
fo2.write("Initiator-[#brown]>Responder: VID+phase1 policies")
fo2.write("\n")
fo2.write("@enduml")
fo2.close()
watchdog = Watchdog(10)
try:
proc1 = subprocess.Popen(['java', '-jar', 'plantuml.jar'])
except Watchdog:
proc1.kill()
watchdog.stop()
#main
test_vpn()
Usage if you regularly execute something and want to make sure it is executed at least every y seconds:
def myHandler():
print "Whoa! Watchdog expired. Holy heavens!"
sys.exit()
watchdog = Watchdog(y, myHandler)
def doSomethingRegularly():
# make sure you do not return in here or call watchdog.reset() before returning
watchdog.reset()
--------------------------------------------------------------------------------------------------------------------------
@startuml
title VPN connection based on IKEv2
autonumber
participant Initiator as Initiator
participant Responder as Responder
Initiator-[#brown]>Responder: VID+phase1 policies
@enduml
--------------------------------------------------------------------------------------------------------------------------
<html>
<head>Test script for vpn connection based on IKEv2</head>
<body>
<p>Initiator-[#brown]>Responder: VID+phase1 policies</p>
<img src="IKEv2_flow.png" alt="Oups, something went wrong with IKEv2_flow">
</body>
</html>
--------------------------------------------------------------------------------------------------------------------------
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