class WebsiteMonitor:
def __init__(self, url, checkInterval):
self.url = url
self.checkInterval = checkInterval
# calculating the number of checks in an hour to initialize the history
maxNumberOfChecksSaved = int(round(3600.0 / checkInterval))
self.checksHistory = History(maxNumberOfChecksSaved)
# the history may be used by other threads, thus we protect it with a lock
self.historyLock = threading.Lock()
# interval keeps track of the Interval instance that execute self.check every self.checkInterval
self.interval = None
# keeps track of when the monitor was launched
self.startedMonitoringTime = time.time()
def check(self):
# HTTP HEAD request to the url of the monitored website
# measurez
success = True
checkTime = time.time()
try:
r = requests.head(self.url, timeout=min(self.checkInterval, 5.0))
except requests.exceptions.RequestException:
success = False
responseTime = time.time() - checkTime
with self.historyLock:
self.checksHistory.add((
-1 if not (success) else r.status_code,
checkTime,
-1.0 if not (success) else responseTime,
))
def startMonitoring(self):
self.startedMonitoringTime = time.time()
self.interval = Interval(self.checkInterval, self.check)
def stopMonitoring(self):
if self.interval != None:
self.interval.cancel()
self.interval = None
#####
# THREAD SAFE GETTER WITH CONDITION
#####
def getCheckHistoryForThePast(self, seconds):
t = time.time()
with self.historyLock:
# check[1] = timestamp of the check
return self.checksHistory.getValuesUntilCondition(
lambda check: t - check[1] > seconds)
def main():
tab = Tab()
history = History()
tab.setUrl("http://tutorialspoint.com")
history.add(tab.saveUrl())
tab.setUrl("https://www.python.org/doc/")
history.add(tab.saveUrl())
tab.setUrl("http://www.trome.com.pe")
print("Current web url: " + tab.getUrl())
print("Back button is clicked.. ")
tab.restoreFromSavedUrl(history.get(1))
print("Saved url: " + tab.getUrl())
print("Back button again.. ")
tab.restoreFromSavedUrl(history.get(0))
print("Saved url: " + tab.getUrl())
# creating necessary objects
log = History()
menu = Menu()
reader = InputReader()
sub = Integrals()
myHelp = Help()
while True:
selection = menu.select() #
if selection == 'q': # Quiting the main menu
break
elif selection == '1': # choosing single integral option
result = sub.singleIntegral()
log.add(result)
elif selection == '2': # choosing many integrals
results = sub.manyIntegrals()
log.add(results)
elif selection == '3': # choosing history
log.show()
raw_input("Press any key to close...")
elif selection == '4': # choosing help
myHelp.show()
raw_input("Press any key to close...")
if not(log.isEmpty()): # displays this session's history only if there is something to show
log.show()
if reader.yesNoInput("Save history to file?"):
log.saveToFile()
