def startConsole(self):
# generate widget to show the status of the alert system
for option in self.options:
if option.type == "alertSystemActive":
if option.value == 0:
self.alertSystemActive = \
StatusUrwid("alert system status",
"Status", "Deactivated")
self.alertSystemActive.turnRed()
else:
self.alertSystemActive = \
StatusUrwid("alert system status",
"Status", "Activated")
self.alertSystemActive.turnGreen()
if self.alertSystemActive == None:
logging.error("[%s]: No alert system status option." %
self.fileName)
return
# generate widget to show the status of the connection
self.connectionStatus = StatusUrwid("connection status", "Status",
"Online")
self.connectionStatus.turnNeutral()
# generate pin field
self.pinEdit = PinUrwid("Enter PIN:\n", multiline=False, mask="*")
self.pinEdit.registerConsoleInstance(self)
# generate menu
option1 = urwid.Text("1. Activate alert system")
option2 = urwid.Text("2. Deactivate alert system")
option3 = urwid.Text("3. Activate alert system in %d seconds" %
self.timeDelayedActivation)
separator = urwid.Text("")
instruction = urwid.Text("Please, choose an option.")
self.menuPile = urwid.Pile(
[option1, option2, option3, separator, instruction])
# generate edit/menu part of the screen
self.editPartScreen = urwid.Pile([self.pinEdit])
boxedEditPartScreen = urwid.LineBox(self.editPartScreen, title="menu")
# initialize warning view urwid
self.warningView = WarningUrwid()
# generate final body object
self.finalBody = urwid.Pile([
self.alertSystemActive.get(),
self.connectionStatus.get(), boxedEditPartScreen
])
fillerBody = urwid.Filler(self.finalBody, "top")
# generate header
header = urwid.Text("alertR keypad manager", align="center")
# build frame for final rendering
self.mainFrame = urwid.Frame(fillerBody, header=header)
# color palette
palette = [
('redColor', 'black', 'dark red'),
('greenColor', 'black', 'dark green'),
('grayColor', 'black', 'light gray'),
('connected', 'black', 'dark green'),
('disconnected', 'black', 'dark red'),
('sensoralert', 'black', 'yellow'),
('connectionfail', 'black', 'light gray'),
('timedout', 'black', 'dark red'),
('neutral', '', ''),
]
# create urwid main loop for the rendering
self.mainLoop = urwid.MainLoop(self.mainFrame,
palette=palette,
unhandled_input=self.handleKeypress)
# create a file descriptor callback to give other
# threads the ability to communicate with the urwid thread
self.screenFd = self.mainLoop.watch_pipe(self.screenCallback)
# set the correct view in which we are
self.inPinView = True
self.inMenuView = False
self.inWarningView = False
# run urwid loop
self.mainLoop.run()
def startConsole(self):
# generate widget to show the status of the alert system
for option in self.options:
if option.type == "alertSystemActive":
if option.value == 0:
self.alertSystemActive = \
StatusUrwid("alert system status",
"Status", "Deactivated")
self.alertSystemActive.turnRed()
else:
self.alertSystemActive = \
StatusUrwid("alert system status",
"Status", "Activated")
self.alertSystemActive.turnGreen()
if self.alertSystemActive == None:
logging.error("[%s]: No alert system status option."
% self.fileName)
return
# generate widget to show the status of the connection
self.connectionStatus = StatusUrwid("connection status",
"Status", "Online")
self.connectionStatus.turnNeutral()
# generate pin field
self.pinEdit = PinUrwid("Enter PIN:\n", multiline=False, mask="*")
self.pinEdit.registerConsoleInstance(self)
# generate menu
option1 = urwid.Text("1. Activate alert system")
option2 = urwid.Text("2. Deactivate alert system")
option3 = urwid.Text("3. Activate alert system in %d seconds"
% self.timeDelayedActivation)
separator = urwid.Text("")
instruction = urwid.Text("Please, choose an option.")
self.menuPile = urwid.Pile([option1, option2, option3, separator,
instruction])
# generate edit/menu part of the screen
self.editPartScreen = urwid.Pile([self.pinEdit])
boxedEditPartScreen = urwid.LineBox(self.editPartScreen, title="menu")
# initialize warning view urwid
self.warningView = WarningUrwid()
# generate final body object
self.finalBody = urwid.Pile([self.alertSystemActive.get(),
self.connectionStatus.get(), boxedEditPartScreen])
fillerBody = urwid.Filler(self.finalBody, "top")
# generate header
header = urwid.Text("alertR keypad manager", align="center")
# build frame for final rendering
self.mainFrame = urwid.Frame(fillerBody, header=header)
# color palette
palette = [
('redColor', 'black', 'dark red'),
('greenColor', 'black', 'dark green'),
('grayColor', 'black', 'light gray'),
('connected', 'black', 'dark green'),
('disconnected', 'black', 'dark red'),
('sensoralert', 'black', 'yellow'),
('connectionfail', 'black', 'light gray'),
('timedout', 'black', 'dark red'),
('neutral', '', ''),
]
# create urwid main loop for the rendering
self.mainLoop = urwid.MainLoop(self.mainFrame, palette=palette,
unhandled_input=self.handleKeypress)
# create a file descriptor callback to give other
# threads the ability to communicate with the urwid thread
self.screenFd = self.mainLoop.watch_pipe(self.screenCallback)
# set the correct view in which we are
self.inPinView = True
self.inMenuView = False
self.inWarningView = False
# run urwid loop
self.mainLoop.run()
class Console:
def __init__(self, globalData):
self.fileName = os.path.basename(__file__)
# get global configured data
self.globalData = globalData
self.options = self.globalData.options
self.nodes = self.globalData.nodes
self.sensors = self.globalData.sensors
self.managers = self.globalData.managers
self.alerts = self.globalData.alerts
self.sensorAlerts = self.globalData.sensorAlerts
self.serverComm = self.globalData.serverComm
self.pins = self.globalData.pins
self.timeDelayedActivation = self.globalData.timeDelayedActivation
self.audioOutput = self.globalData.audioOutput
self.sensorWarningStates = self.globalData.sensorWarningStates
# lock that is being used so only one thread can update the screen
self.consoleLock = threading.BoundedSemaphore(1)
# urwid object that shows the connection status
self.connectionStatus = None
# urwid object that shows if the alert system is active
self.alertSystemActive = None
# the file descriptor for the urwid callback to update the screen
self.screenFd = None
# this is the urwid object of the pin field
self.pinEdit = None
# this is the urwid object of the options menu
self.menuPile = None
# this is the urwid object of the whole edit part of the screen
self.editPartScreen = None
# gives the time in seconds when the screen was unlocked
# (used to check if it was timed out)
self.screenUnlockedTime = 0
# the main render loop for the interactive session
self.mainLoop = None
# the final body that contains the left and right part of the screen
self.finalBody = None
# the main frame around the final body
self.mainFrame = None
# the urwid object of the warning view
self.warningView = None
# flag that signalizes if the pin view is shown or not
self.inPinView = True
# flag that signalizes if the menu view is shown or not
self.inMenuView = False
# flag that signalizes if the warning view is shown or not
self.inWarningView = False
# callback function of the action that is chosen during the menu view
# (is used to show warnings if some sensors are not in
# the correct state and after confirmation execute the chosen option)
self.callbackOptionToExecute = None
# list of sensors that are in the warning state and need user
# confirmation
self.sensorsToWarn = list()
# internal function that acquires the lock
def _acquireLock(self):
logging.debug("[%s]: Acquire lock." % self.fileName)
self.consoleLock.acquire()
# internal function that clears the edit/menu part of the screen
def _clearEditPartScreen(self):
# remove views from the screen (if exists)
for pileTuple in self.editPartScreen.contents:
if self.menuPile == pileTuple[0]:
self.editPartScreen.contents.remove(pileTuple)
continue
elif self.pinEdit == pileTuple[0]:
self.editPartScreen.contents.remove(pileTuple)
continue
elif self.warningView.get() == pileTuple[0]:
self.editPartScreen.contents.remove(pileTuple)
continue
# internal function that creates a list of sensors that do not
# satisfy the configured sensor warning states
def _checkSensorStatesSatisfied(self):
# get a list of sensors that do not satisfy the warning states
statesNotSatisfied = list()
for sensorWarningState in self.sensorWarningStates:
# get the node corresponding to sensor warning state
currentNode = None
for node in self.nodes:
if node.username == sensorWarningState.username:
currentNode = node
break
# skip warning state if node is not found
if currentNode is None:
logging.warning("[%s]: Not able to find " % self.fileName +
"node for username '%s'." %
sensorWarningState.username)
continue
# get the sensor corresponding to sensor warning state
currentSensor = None
for sensor in self.sensors:
if (sensor.nodeId == currentNode.nodeId
and sensor.remoteSensorId
== sensorWarningState.remoteSensorId):
currentSensor = sensor
break
# skip warning state if sensor is not found
if currentSensor is None:
logging.warning(
"[%s]: Not able to find " % self.fileName +
"sensor with remote id '%d' for username '%s'." %
(sensorWarningState.remoteSensorId,
sensorWarningState.username))
continue
# check if the sensor is in the warning state
if currentSensor.state == sensorWarningState.warningState:
statesNotSatisfied.append(sensor)
logging.debug(
"[%s]: Sensor with remote id '%d' " %
(self.fileName, sensorWarningState.remoteSensorId) +
"for username '%s' and description '%s' " %
(sensorWarningState.username, sensor.description) +
"in warning state.")
return statesNotSatisfied
# internal function that executes option 1 of the menu
def _executeOption1(self):
logging.info("[%s]: Activating alert system." % self.fileName)
# check if output is activated
if not self.audioOutput is None:
# output audio via a thread to not block
# the urwid console thread
audioProcess = ScreenActionExecuter(self.globalData)
# set thread to daemon
# => threads terminates when main thread terminates
audioProcess.daemon = True
audioProcess.outputAudio = True
audioProcess.audioType = AudioOptions.activating
audioProcess.start()
# send option message to server via a thread to not block
# the urwid console thread
updateProcess = ScreenActionExecuter(self.globalData)
# set thread to daemon
# => threads terminates when main thread terminates
updateProcess.daemon = True
updateProcess.sendOption = True
updateProcess.optionType = "alertSystemActive"
updateProcess.optionValue = 1
updateProcess.start()
# internal function that executes option 2 of the menu
def _executeOption2(self):
logging.info("[%s]: Deactivating alert system." % self.fileName)
# check if output is activated
if not self.audioOutput is None:
# output audio via a thread to not block
# the urwid console thread
audioProcess = ScreenActionExecuter(self.globalData)
# set thread to daemon
# => threads terminates when main thread terminates
audioProcess.daemon = True
audioProcess.outputAudio = True
audioProcess.audioType = AudioOptions.deactivating
audioProcess.start()
# send option message to server via a thread to not block
# the urwid console thread
updateProcess = ScreenActionExecuter(self.globalData)
# set thread to daemon
# => threads terminates when main thread terminates
updateProcess.daemon = True
updateProcess.sendOption = True
updateProcess.optionType = "alertSystemActive"
updateProcess.optionValue = 0
updateProcess.start()
# internal function that executes option 3 of the menu
def _executeOption3(self):
logging.info("[%s]: Activating alert system " % self.fileName +
"in %d seconds." % self.timeDelayedActivation)
# check if output is activated
if not self.audioOutput is None:
# output audio via a thread to not block
# the urwid console thread
audioProcess = ScreenActionExecuter(self.globalData)
# set thread to daemon
# => threads terminates when main thread terminates
audioProcess.daemon = True
audioProcess.outputAudio = True
audioProcess.audioType = AudioOptions.activatingDelayed
audioProcess.start()
# send option message to server via a thread to not block
# the urwid console thread
updateProcess = ScreenActionExecuter(self.globalData)
# set thread to daemon
# => threads terminates when main thread terminates
updateProcess.daemon = True
updateProcess.sendOptionDelayed = True
updateProcess.optionTypeDelayed = "alertSystemActive"
updateProcess.optionValueDelayed = 1
updateProcess.optionDelayDelayed = self.timeDelayedActivation
updateProcess.start()
# internal function that handles the keypress for the menu view
def _handleMenuKeypress(self, key):
# check if option 1 was chosen => activate alert system
if key == '1':
# get all sensors that do not satisfy the
# configured warning states
self.sensorsToWarn = self._checkSensorStatesSatisfied()
# check if no sensor is in the warning state
# => execute chosen action
if not self.sensorsToWarn:
self._executeOption1()
self.showPinView()
# at least one sensor is in the warning state
# => ask for user confirmation
else:
# set the function to execute when all warnings are confirmed
self.callbackOptionToExecute = self._executeOption1
# let the user confirm all warning states
self._handleWarningStates()
# check if option 2 was chosen => deactivate alert system
elif key == '2':
self._executeOption2()
self.showPinView()
# check if option 3 was chosen
elif key == '3':
# get all sensors that do not satisfy the
# configured warning states
self.sensorsToWarn = self._checkSensorStatesSatisfied()
# check if no sensor is in the warning state
# => execute chosen action
if not self.sensorsToWarn:
self._executeOption3()
self.showPinView()
# at least one sensor is in the warning state
# => ask for user confirmation
else:
# set the function to execute when all warnings are confirmed
self.callbackOptionToExecute = self._executeOption3
# let the user confirm all warning states
self._handleWarningStates()
# internal function that handles all sensors in warning states
def _handleWarningStates(self):
# check if a sensor that is in the warning state still exists
# => warn about sensor
if self.sensorsToWarn:
sensorToWarn = self.sensorsToWarn.pop()
self.warningView.setSensorData(sensorToWarn.description,
sensorToWarn.state)
self.showWarningView()
# if no sensor in a warning state remains
# => execute chosen action
else:
self.callbackOptionToExecute()
self.showPinView()
# internal function that releases the lock
def _releaseLock(self):
logging.debug("[%s]: Release lock." % self.fileName)
self.consoleLock.release()
# this function checks if the given pin is in the list of allowed pins
def checkPin(self, inputPin):
if inputPin in self.pins:
return True
return False
# this function is called if a key/mouse input was made
def handleKeypress(self, key):
# check if we are in the pin field view
if self.inPinView:
# if pin field loses focus send key manually to it
# (seems to happen sometimes if it was not used for a long time)
if key in [
"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b",
"c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n",
"o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z",
"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L",
"M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X",
"Y", "Z", "enter"
]:
logging.debug("[%s]: Sending keypress '%s'" %
(key, self.fileName) + "manually to pin field.")
self.pinEdit.keypress((100, ), key)
# check if we are in the menu view
elif self.inMenuView:
self._handleMenuKeypress(key)
# check if we are in the warning view
elif self.inWarningView:
# option 1 continues the chosen action
if key == "1":
self._handleWarningStates()
# option 2 aborts the chosen action
elif key == "2":
self.showPinView()
# => disable key/mouse input
return True
# this function will be called from the urwid main loop
# when the file descriptor of the callback
# gets data written to it and updates the screen elements
def screenCallback(self, receivedData):
# if received data equals "status" or "sensoralert"
# update the whole screen (in case of a sensor alert it can happen
# that also a normal state change was received before and is forgotten
# if a normal status update is not made)
if receivedData == "status" or receivedData == "sensoralert":
logging.debug("[%s]: Status update received. " % self.fileName +
"Updating screen elements.")
# update connection status urwid widget
self.connectionStatus.updateStatusValue("Online")
self.connectionStatus.turnNeutral()
# update all option widgets
for option in self.options:
# change alert system active widget according
# to received status
if option.type == "alertSystemActive":
if option.value == 0:
self.alertSystemActive.updateStatusValue("Deactivated")
self.alertSystemActive.turnRed()
else:
self.alertSystemActive.updateStatusValue("Activated")
self.alertSystemActive.turnGreen()
# check if the connection to the server failed
if receivedData == "connectionfail":
logging.debug("[%s]: Status connection failed " % self.fileName +
"received. Updating screen elements.")
# update connection status urwid widget
self.connectionStatus.updateStatusValue("Offline")
self.connectionStatus.turnRed()
# update alert system active widget
self.alertSystemActive.turnGray()
# check if a sensor alert was received from the server
if receivedData == "sensoralert":
logging.debug("[%s]: Sensor alert " % self.fileName +
"received. Removing it.")
# remove all sensor alerts
del self.sensorAlerts[:]
# check if the screen should be locked
if receivedData == "lockscreen":
logging.debug("[%s]: Locking screen." % self.fileName)
self.showPinView()
# return true so the file descriptor will NOT be closed
self._releaseLock()
return True
# show the menu view
def showMenuView(self):
self.inMenuView = True
self.inPinView = False
self.inWarningView = False
# remove views from the screen
self._clearEditPartScreen()
# show menu view
self.editPartScreen.contents.append(
(self.menuPile, self.editPartScreen.options()))
# show the pin view
def showPinView(self):
self.inMenuView = False
self.inPinView = True
self.inWarningView = False
# reset unlock time
self.screenUnlockedTime = 0
# reset callback and warnings
self.callbackOptionToExecute = None
self.sensorsToWarn = list()
# remove views from the screen
self._clearEditPartScreen()
# show pin view
self.editPartScreen.contents.append(
(self.pinEdit, self.editPartScreen.options()))
# show the warning view
def showWarningView(self):
self.inMenuView = False
self.inPinView = False
self.inWarningView = True
# check if output is activated
if not self.audioOutput is None:
# output audio via a thread to not block
# the urwid console thread
audioProcess = ScreenActionExecuter(self.globalData)
# set thread to daemon
# => threads terminates when main thread terminates
audioProcess.daemon = True
audioProcess.outputAudio = True
audioProcess.audioType = AudioOptions.warning
audioProcess.start()
# remove views from the screen
self._clearEditPartScreen()
# show pin view
self.editPartScreen.contents.append(
(self.warningView.get(), self.editPartScreen.options()))
# this function initializes the urwid objects and displays
# them (it starts also the urwid main loop and will not
# return unless the client is terminated)
def startConsole(self):
# generate widget to show the status of the alert system
for option in self.options:
if option.type == "alertSystemActive":
if option.value == 0:
self.alertSystemActive = \
StatusUrwid("alert system status",
"Status", "Deactivated")
self.alertSystemActive.turnRed()
else:
self.alertSystemActive = \
StatusUrwid("alert system status",
"Status", "Activated")
self.alertSystemActive.turnGreen()
if self.alertSystemActive == None:
logging.error("[%s]: No alert system status option." %
self.fileName)
return
# generate widget to show the status of the connection
self.connectionStatus = StatusUrwid("connection status", "Status",
"Online")
self.connectionStatus.turnNeutral()
# generate pin field
self.pinEdit = PinUrwid("Enter PIN:\n", multiline=False, mask="*")
self.pinEdit.registerConsoleInstance(self)
# generate menu
option1 = urwid.Text("1. Activate alert system")
option2 = urwid.Text("2. Deactivate alert system")
option3 = urwid.Text("3. Activate alert system in %d seconds" %
self.timeDelayedActivation)
separator = urwid.Text("")
instruction = urwid.Text("Please, choose an option.")
self.menuPile = urwid.Pile(
[option1, option2, option3, separator, instruction])
# generate edit/menu part of the screen
self.editPartScreen = urwid.Pile([self.pinEdit])
boxedEditPartScreen = urwid.LineBox(self.editPartScreen, title="menu")
# initialize warning view urwid
self.warningView = WarningUrwid()
# generate final body object
self.finalBody = urwid.Pile([
self.alertSystemActive.get(),
self.connectionStatus.get(), boxedEditPartScreen
])
fillerBody = urwid.Filler(self.finalBody, "top")
# generate header
header = urwid.Text("alertR keypad manager", align="center")
# build frame for final rendering
self.mainFrame = urwid.Frame(fillerBody, header=header)
# color palette
palette = [
('redColor', 'black', 'dark red'),
('greenColor', 'black', 'dark green'),
('grayColor', 'black', 'light gray'),
('connected', 'black', 'dark green'),
('disconnected', 'black', 'dark red'),
('sensoralert', 'black', 'yellow'),
('connectionfail', 'black', 'light gray'),
('timedout', 'black', 'dark red'),
('neutral', '', ''),
]
# create urwid main loop for the rendering
self.mainLoop = urwid.MainLoop(self.mainFrame,
palette=palette,
unhandled_input=self.handleKeypress)
# create a file descriptor callback to give other
# threads the ability to communicate with the urwid thread
self.screenFd = self.mainLoop.watch_pipe(self.screenCallback)
# set the correct view in which we are
self.inPinView = True
self.inMenuView = False
self.inWarningView = False
# run urwid loop
self.mainLoop.run()
# this function is called to update the screen
def updateScreen(self, status):
# write status to the callback file descriptor
if self.screenFd != None:
self._acquireLock()
os.write(self.screenFd, status)
return True
return False
class Console:
def __init__(self, globalData):
self.fileName = os.path.basename(__file__)
# get global configured data
self.globalData = globalData
self.options = self.globalData.options
self.nodes = self.globalData.nodes
self.sensors = self.globalData.sensors
self.managers = self.globalData.managers
self.alerts = self.globalData.alerts
self.sensorAlerts = self.globalData.sensorAlerts
self.serverComm = self.globalData.serverComm
self.pins = self.globalData.pins
self.timeDelayedActivation = self.globalData.timeDelayedActivation
self.audioOutput = self.globalData.audioOutput
self.sensorWarningStates = self.globalData.sensorWarningStates
# lock that is being used so only one thread can update the screen
self.consoleLock = threading.BoundedSemaphore(1)
# urwid object that shows the connection status
self.connectionStatus = None
# urwid object that shows if the alert system is active
self.alertSystemActive = None
# the file descriptor for the urwid callback to update the screen
self.screenFd = None
# this is the urwid object of the pin field
self.pinEdit = None
# this is the urwid object of the options menu
self.menuPile = None
# this is the urwid object of the whole edit part of the screen
self.editPartScreen = None
# gives the time in seconds when the screen was unlocked
# (used to check if it was timed out)
self.screenUnlockedTime = 0
# the main render loop for the interactive session
self.mainLoop = None
# the final body that contains the left and right part of the screen
self.finalBody = None
# the main frame around the final body
self.mainFrame = None
# the urwid object of the warning view
self.warningView = None
# flag that signalizes if the pin view is shown or not
self.inPinView = True
# flag that signalizes if the menu view is shown or not
self.inMenuView = False
# flag that signalizes if the warning view is shown or not
self.inWarningView = False
# callback function of the action that is chosen during the menu view
# (is used to show warnings if some sensors are not in
# the correct state and after confirmation execute the chosen option)
self.callbackOptionToExecute = None
# list of sensors that are in the warning state and need user
# confirmation
self.sensorsToWarn = list()
# internal function that acquires the lock
def _acquireLock(self):
logging.debug("[%s]: Acquire lock." % self.fileName)
self.consoleLock.acquire()
# internal function that clears the edit/menu part of the screen
def _clearEditPartScreen(self):
# remove views from the screen (if exists)
for pileTuple in self.editPartScreen.contents:
if self.menuPile == pileTuple[0]:
self.editPartScreen.contents.remove(pileTuple)
continue
elif self.pinEdit == pileTuple[0]:
self.editPartScreen.contents.remove(pileTuple)
continue
elif self.warningView.get() == pileTuple[0]:
self.editPartScreen.contents.remove(pileTuple)
continue
# internal function that creates a list of sensors that do not
# satisfy the configured sensor warning states
def _checkSensorStatesSatisfied(self):
# get a list of sensors that do not satisfy the warning states
statesNotSatisfied = list()
for sensorWarningState in self.sensorWarningStates:
# get the node corresponding to sensor warning state
currentNode = None
for node in self.nodes:
if node.username == sensorWarningState.username:
currentNode = node
break
# skip warning state if node is not found
if currentNode is None:
logging.warning("[%s]: Not able to find "
% self.fileName
+ "node for username '%s'."
% sensorWarningState.username)
continue
# get the sensor corresponding to sensor warning state
currentSensor = None
for sensor in self.sensors:
if (sensor.nodeId == currentNode.nodeId
and sensor.remoteSensorId
== sensorWarningState.remoteSensorId):
currentSensor = sensor
break
# skip warning state if sensor is not found
if currentSensor is None:
logging.warning("[%s]: Not able to find "
% self.fileName
+ "sensor with remote id '%d' for username '%s'."
% (sensorWarningState.remoteSensorId,
sensorWarningState.username))
continue
# check if the sensor is in the warning state
if currentSensor.state == sensorWarningState.warningState:
statesNotSatisfied.append(sensor)
logging.debug("[%s]: Sensor with remote id '%d' "
% (self.fileName, sensorWarningState.remoteSensorId)
+ "for username '%s' and description '%s' "
% (sensorWarningState.username, sensor.description)
+ "in warning state.")
return statesNotSatisfied
# internal function that executes option 1 of the menu
def _executeOption1(self):
logging.info("[%s]: Activating alert system." % self.fileName)
# check if output is activated
if not self.audioOutput is None:
# output audio via a thread to not block
# the urwid console thread
audioProcess = ScreenActionExecuter(self.globalData)
# set thread to daemon
# => threads terminates when main thread terminates
audioProcess.daemon = True
audioProcess.outputAudio = True
audioProcess.audioType = AudioOptions.activating
audioProcess.start()
# send option message to server via a thread to not block
# the urwid console thread
updateProcess = ScreenActionExecuter(self.globalData)
# set thread to daemon
# => threads terminates when main thread terminates
updateProcess.daemon = True
updateProcess.sendOption = True
updateProcess.optionType = "alertSystemActive"
updateProcess.optionValue = 1
updateProcess.start()
# internal function that executes option 2 of the menu
def _executeOption2(self):
logging.info("[%s]: Deactivating alert system." % self.fileName)
# check if output is activated
if not self.audioOutput is None:
# output audio via a thread to not block
# the urwid console thread
audioProcess = ScreenActionExecuter(self.globalData)
# set thread to daemon
# => threads terminates when main thread terminates
audioProcess.daemon = True
audioProcess.outputAudio = True
audioProcess.audioType = AudioOptions.deactivating
audioProcess.start()
# send option message to server via a thread to not block
# the urwid console thread
updateProcess = ScreenActionExecuter(self.globalData)
# set thread to daemon
# => threads terminates when main thread terminates
updateProcess.daemon = True
updateProcess.sendOption = True
updateProcess.optionType = "alertSystemActive"
updateProcess.optionValue = 0
updateProcess.start()
# internal function that executes option 3 of the menu
def _executeOption3(self):
logging.info("[%s]: Activating alert system " % self.fileName
+ "in %d seconds." % self.timeDelayedActivation)
# check if output is activated
if not self.audioOutput is None:
# output audio via a thread to not block
# the urwid console thread
audioProcess = ScreenActionExecuter(self.globalData)
# set thread to daemon
# => threads terminates when main thread terminates
audioProcess.daemon = True
audioProcess.outputAudio = True
audioProcess.audioType = AudioOptions.activatingDelayed
audioProcess.start()
# send option message to server via a thread to not block
# the urwid console thread
updateProcess = ScreenActionExecuter(self.globalData)
# set thread to daemon
# => threads terminates when main thread terminates
updateProcess.daemon = True
updateProcess.sendOptionDelayed = True
updateProcess.optionTypeDelayed = "alertSystemActive"
updateProcess.optionValueDelayed = 1
updateProcess.optionDelayDelayed = self.timeDelayedActivation
updateProcess.start()
# internal function that handles the keypress for the menu view
def _handleMenuKeypress(self, key):
# check if option 1 was chosen => activate alert system
if key == '1':
# get all sensors that do not satisfy the
# configured warning states
self.sensorsToWarn = self._checkSensorStatesSatisfied()
# check if no sensor is in the warning state
# => execute chosen action
if not self.sensorsToWarn:
self._executeOption1()
self.showPinView()
# at least one sensor is in the warning state
# => ask for user confirmation
else:
# set the function to execute when all warnings are confirmed
self.callbackOptionToExecute = self._executeOption1
# let the user confirm all warning states
self._handleWarningStates()
# check if option 2 was chosen => deactivate alert system
elif key == '2':
self._executeOption2()
self.showPinView()
# check if option 3 was chosen
elif key == '3':
# get all sensors that do not satisfy the
# configured warning states
self.sensorsToWarn = self._checkSensorStatesSatisfied()
# check if no sensor is in the warning state
# => execute chosen action
if not self.sensorsToWarn:
self._executeOption3()
self.showPinView()
# at least one sensor is in the warning state
# => ask for user confirmation
else:
# set the function to execute when all warnings are confirmed
self.callbackOptionToExecute = self._executeOption3
# let the user confirm all warning states
self._handleWarningStates()
# internal function that handles all sensors in warning states
def _handleWarningStates(self):
# check if a sensor that is in the warning state still exists
# => warn about sensor
if self.sensorsToWarn:
sensorToWarn = self.sensorsToWarn.pop()
self.warningView.setSensorData(sensorToWarn.description,
sensorToWarn.state)
self.showWarningView()
# if no sensor in a warning state remains
# => execute chosen action
else:
self.callbackOptionToExecute()
self.showPinView()
# internal function that releases the lock
def _releaseLock(self):
logging.debug("[%s]: Release lock." % self.fileName)
self.consoleLock.release()
# this function checks if the given pin is in the list of allowed pins
def checkPin(self, inputPin):
if inputPin in self.pins:
return True
return False
# this function is called if a key/mouse input was made
def handleKeypress(self, key):
# check if we are in the pin field view
if self.inPinView:
# if pin field loses focus send key manually to it
# (seems to happen sometimes if it was not used for a long time)
if key in ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9",
"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l",
"m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x",
"y", "z",
"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L",
"M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X",
"Y", "Z",
"enter"]:
logging.debug("[%s]: Sending keypress '%s'"
% (key, self.fileName)
+ "manually to pin field.")
self.pinEdit.keypress((100,), key)
# check if we are in the menu view
elif self.inMenuView:
self._handleMenuKeypress(key)
# check if we are in the warning view
elif self.inWarningView:
# option 1 continues the chosen action
if key == "1":
self._handleWarningStates()
# option 2 aborts the chosen action
elif key == "2":
self.showPinView()
# => disable key/mouse input
return True
# this function will be called from the urwid main loop
# when the file descriptor of the callback
# gets data written to it and updates the screen elements
def screenCallback(self, receivedData):
# if received data equals "status" or "sensoralert"
# update the whole screen (in case of a sensor alert it can happen
# that also a normal state change was received before and is forgotten
# if a normal status update is not made)
if receivedData == "status" or receivedData == "sensoralert":
logging.debug("[%s]: Status update received. " % self.fileName
+ "Updating screen elements.")
# update connection status urwid widget
self.connectionStatus.updateStatusValue("Online")
self.connectionStatus.turnNeutral()
# update all option widgets
for option in self.options:
# change alert system active widget according
# to received status
if option.type == "alertSystemActive":
if option.value == 0:
self.alertSystemActive.updateStatusValue("Deactivated")
self.alertSystemActive.turnRed()
else:
self.alertSystemActive.updateStatusValue("Activated")
self.alertSystemActive.turnGreen()
# check if the connection to the server failed
if receivedData == "connectionfail":
logging.debug("[%s]: Status connection failed " % self.fileName
+ "received. Updating screen elements.")
# update connection status urwid widget
self.connectionStatus.updateStatusValue("Offline")
self.connectionStatus.turnRed()
# update alert system active widget
self.alertSystemActive.turnGray()
# check if a sensor alert was received from the server
if receivedData == "sensoralert":
logging.debug("[%s]: Sensor alert " % self.fileName
+ "received. Removing it.")
# remove all sensor alerts
del self.sensorAlerts[:]
# check if the screen should be locked
if receivedData == "lockscreen":
logging.debug("[%s]: Locking screen." % self.fileName)
self.showPinView()
# return true so the file descriptor will NOT be closed
self._releaseLock()
return True
# show the menu view
def showMenuView(self):
self.inMenuView = True
self.inPinView = False
self.inWarningView = False
# remove views from the screen
self._clearEditPartScreen()
# show menu view
self.editPartScreen.contents.append((self.menuPile,
self.editPartScreen.options()))
# show the pin view
def showPinView(self):
self.inMenuView = False
self.inPinView = True
self.inWarningView = False
# reset unlock time
self.screenUnlockedTime = 0
# reset callback and warnings
self.callbackOptionToExecute = None
self.sensorsToWarn = list()
# remove views from the screen
self._clearEditPartScreen()
# show pin view
self.editPartScreen.contents.append((self.pinEdit,
self.editPartScreen.options()))
# show the warning view
def showWarningView(self):
self.inMenuView = False
self.inPinView = False
self.inWarningView = True
# check if output is activated
if not self.audioOutput is None:
# output audio via a thread to not block
# the urwid console thread
audioProcess = ScreenActionExecuter(self.globalData)
# set thread to daemon
# => threads terminates when main thread terminates
audioProcess.daemon = True
audioProcess.outputAudio = True
audioProcess.audioType = AudioOptions.warning
audioProcess.start()
# remove views from the screen
self._clearEditPartScreen()
# show pin view
self.editPartScreen.contents.append((self.warningView.get(),
self.editPartScreen.options()))
# this function initializes the urwid objects and displays
# them (it starts also the urwid main loop and will not
# return unless the client is terminated)
def startConsole(self):
# generate widget to show the status of the alert system
for option in self.options:
if option.type == "alertSystemActive":
if option.value == 0:
self.alertSystemActive = \
StatusUrwid("alert system status",
"Status", "Deactivated")
self.alertSystemActive.turnRed()
else:
self.alertSystemActive = \
StatusUrwid("alert system status",
"Status", "Activated")
self.alertSystemActive.turnGreen()
if self.alertSystemActive == None:
logging.error("[%s]: No alert system status option."
% self.fileName)
return
# generate widget to show the status of the connection
self.connectionStatus = StatusUrwid("connection status",
"Status", "Online")
self.connectionStatus.turnNeutral()
# generate pin field
self.pinEdit = PinUrwid("Enter PIN:\n", multiline=False, mask="*")
self.pinEdit.registerConsoleInstance(self)
# generate menu
option1 = urwid.Text("1. Activate alert system")
option2 = urwid.Text("2. Deactivate alert system")
option3 = urwid.Text("3. Activate alert system in %d seconds"
% self.timeDelayedActivation)
separator = urwid.Text("")
instruction = urwid.Text("Please, choose an option.")
self.menuPile = urwid.Pile([option1, option2, option3, separator,
instruction])
# generate edit/menu part of the screen
self.editPartScreen = urwid.Pile([self.pinEdit])
boxedEditPartScreen = urwid.LineBox(self.editPartScreen, title="menu")
# initialize warning view urwid
self.warningView = WarningUrwid()
# generate final body object
self.finalBody = urwid.Pile([self.alertSystemActive.get(),
self.connectionStatus.get(), boxedEditPartScreen])
fillerBody = urwid.Filler(self.finalBody, "top")
# generate header
header = urwid.Text("alertR keypad manager", align="center")
# build frame for final rendering
self.mainFrame = urwid.Frame(fillerBody, header=header)
# color palette
palette = [
('redColor', 'black', 'dark red'),
('greenColor', 'black', 'dark green'),
('grayColor', 'black', 'light gray'),
('connected', 'black', 'dark green'),
('disconnected', 'black', 'dark red'),
('sensoralert', 'black', 'yellow'),
('connectionfail', 'black', 'light gray'),
('timedout', 'black', 'dark red'),
('neutral', '', ''),
]
# create urwid main loop for the rendering
self.mainLoop = urwid.MainLoop(self.mainFrame, palette=palette,
unhandled_input=self.handleKeypress)
# create a file descriptor callback to give other
# threads the ability to communicate with the urwid thread
self.screenFd = self.mainLoop.watch_pipe(self.screenCallback)
# set the correct view in which we are
self.inPinView = True
self.inMenuView = False
self.inWarningView = False
# run urwid loop
self.mainLoop.run()
# this function is called to update the screen
def updateScreen(self, status):
# write status to the callback file descriptor
if self.screenFd != None:
self._acquireLock()
os.write(self.screenFd, status)
return True
return False
