def connectToMainServer(self, certificatePath, mainServerIP,
mainServerListenningPort):
self.__manager = NetworkManager(certificatePath)
self.__manager.startNetworkService()
callback = _MainServerConnectorCallback(self)
# Connect to the main server
self.__mainServerPort = mainServerListenningPort
self.__manager.connectTo(mainServerIP, mainServerListenningPort, 5,
callback, True)
while (not self.__manager.isConnectionReady(mainServerListenningPort)):
sleep(0.1)
# Create the packet handler
self.__pHandler = MainServerPacketHandler(self.__manager)
# Create the update thread
self.__updateRequestThread = StatusDatabaseUpdateThread(
_MainServerConnectorUpdateHandler(self), 20)
# Start it
self.__updateRequestThread.start()
def connectToMainServer(self, certificatePath, mainServerIP, mainServerListenningPort):
self.__manager = NetworkManager(certificatePath)
self.__manager.startNetworkService()
callback = _MainServerConnectorCallback(self)
# Connect to the main server
self.__mainServerPort = mainServerListenningPort
self.__manager.connectTo(mainServerIP, mainServerListenningPort, 5, callback, True)
while (not self.__manager.isConnectionReady(mainServerListenningPort)) :
sleep(0.1)
# Create the packet handler
self.__pHandler = MainServerPacketHandler(self.__manager)
# Create the update thread
self.__updateRequestThread = StatusDatabaseUpdateThread(_MainServerConnectorUpdateHandler(self), 20)
# Start it
self.__updateRequestThread.start()
class MainServerConnector(object):
def __init__(self, callback):
self.__stopped = False
self.__callback = callback
def connectToDatabase(self, rootsPassword, databaseName, websiteUser, websiteUserPassword, updateUser, updateUserPassword):
# Create the status database
self.__rootsPassword = rootsPassword
self.__databaseName = databaseName
configurator = DBConfigurator(rootsPassword)
configurator.runSQLScript(databaseName, "../../database/SystemStatusDB.sql")
# Register the website and the update users
configurator.addUser(websiteUser, websiteUserPassword, databaseName, False)
configurator.addUser(updateUser, updateUserPassword, databaseName, True)
# Create the database connectors
self.__reader = SystemStatusDatabaseReader(websiteUser, websiteUserPassword, databaseName)
self.__writer = SystemStatusDatabaseWriter(updateUser, updateUserPassword, databaseName)
# Connect to the database
self.__reader.connect()
self.__writer.connect()
def connectToMainServer(self, certificatePath, mainServerIP, mainServerListenningPort):
self.__manager = NetworkManager(certificatePath)
self.__manager.startNetworkService()
callback = _MainServerConnectorCallback(self)
# Connect to the main server
self.__mainServerPort = mainServerListenningPort
self.__manager.connectTo(mainServerIP, mainServerListenningPort, 5, callback, True)
while (not self.__manager.isConnectionReady(mainServerListenningPort)) :
sleep(0.1)
# Create the packet handler
self.__pHandler = MainServerPacketHandler(self.__manager)
# Create the update thread
self.__updateRequestThread = StatusDatabaseUpdateThread(_MainServerConnectorUpdateHandler(self), 20)
# Start it
self.__updateRequestThread.start()
def disconnectFromMainServer(self):
# Discard all the incoming packets and the scheduled updates
self.__stopped = True
# Stop the update request thread
self.__updateRequestThread.stop()
# Close the database connections
self.__reader.disconnect()
self.__writer.disconnect()
# Stop the network service
self.__manager.stopNetworkService()
# Delete the status database
dbConfigurator = DBConfigurator(self.__rootsPassword)
dbConfigurator.dropDatabase(self.__databaseName)
def getImages(self):
return self.__reader.getImages()
def getVMServersData(self):
return self.__reader.getVMServersData()
def registerVMServer(self, vmServerIP, vmServerPort, vmServerName):
p = self.__pHandler.createVMServerRegistrationPacket(vmServerIP, vmServerPort, vmServerName)
self.__manager.sendPacket(self.__mainServerPort, p)
def unregisterVMServer(self, vmServerNameOrIP, halt):
p = self.__pHandler.createVMServerUnregistrationOrShutdownPacket(vmServerNameOrIP, halt, False)
self.__manager.sendPacket(self.__mainServerPort, p)
def bootUpVMServer(self, vmServerNameOrIP):
p = self.__pHandler.createVMServerBootUpPacket(vmServerNameOrIP)
self.__manager.sendPacket(self.__mainServerPort, p)
def shutdownVMServer(self, vmServerNameOrIP, halt):
p = self.__pHandler.createVMServerUnregistrationOrShutdownPacket(vmServerNameOrIP, halt, True)
self.__manager.sendPacket(self.__mainServerPort, p)
def bootUpVirtualMachine(self, imageName, userID):
p = self.__pHandler.createVMBootRequestPacket(imageName, userID)
self.__manager.sendPacket(self.__mainServerPort, p)
def _processIncomingPacket(self, packet):
if (self.__stopped) :
return
data = self.__pHandler.readPacket(packet)
if (data["packet_type"] == PACKET_T.VM_SERVERS_STATUS_DATA) :
self.__writer.processVMServerSegment(data["Segment"], data["SequenceSize"], data["Data"])
elif (data["packet_type"] == PACKET_T.AVAILABLE_IMAGES_DATA) :
self.__writer.processImageSegment(data["Segment"], data["SequenceSize"], data["Data"])
elif (data["packet_type"] == PACKET_T.VM_SERVER_BOOTUP_ERROR) :
self.__callback.handleVMServerBootUpError(data["ServerNameOrIPAddress"], data["ErrorMessage"])
elif (data["packet_type"] == PACKET_T.VM_SERVER_REGISTRATION_ERROR) :
self.__callback.handleVMServerRegistrationError(data["ServerNameOrIPAddress"], data["ErrorMessage"])
elif (data["packet_type"] == PACKET_T.VM_BOOT_FAILURE) :
self.__callback.handleVMBootFailure(data["VMName"], data["UserID"], data["ErrorMessage"])
elif (data["packet_type"] == PACKET_T.VM_CONNECTION_DATA) :
self.__callback.handleVMConnectionData(data["UserID"], data["VNCServerIPAddress"], data["VNCServerPort"],
data["VNCServerPassword"])
def _sendUpdateRequestPackets(self):
if (self.__stopped) :
return
# Send some update request packets to the main server
p = self.__pHandler.createDataRequestPacket(PACKET_T.QUERY_VM_SERVERS_STATUS)
self.__manager.sendPacket(self.__mainServerPort, p)
p = self.__pHandler.createDataRequestPacket(PACKET_T.QUERY_AVAILABLE_IMAGES)
self.__manager.sendPacket(self.__mainServerPort, p)
class MainServerConnector(object):
def __init__(self, callback):
self.__stopped = False
self.__callback = callback
def connectToDatabase(self, rootsPassword, databaseName, websiteUser,
websiteUserPassword, updateUser, updateUserPassword):
# Create the status database
self.__rootsPassword = rootsPassword
self.__databaseName = databaseName
configurator = DBConfigurator(rootsPassword)
configurator.runSQLScript(databaseName,
"../../database/SystemStatusDB.sql")
# Register the website and the update users
configurator.addUser(websiteUser, websiteUserPassword, databaseName,
False)
configurator.addUser(updateUser, updateUserPassword, databaseName,
True)
# Create the database connectors
self.__reader = SystemStatusDatabaseReader(websiteUser,
websiteUserPassword,
databaseName)
self.__writer = SystemStatusDatabaseWriter(updateUser,
updateUserPassword,
databaseName)
# Connect to the database
self.__reader.connect()
self.__writer.connect()
def connectToMainServer(self, certificatePath, mainServerIP,
mainServerListenningPort):
self.__manager = NetworkManager(certificatePath)
self.__manager.startNetworkService()
callback = _MainServerConnectorCallback(self)
# Connect to the main server
self.__mainServerPort = mainServerListenningPort
self.__manager.connectTo(mainServerIP, mainServerListenningPort, 5,
callback, True)
while (not self.__manager.isConnectionReady(mainServerListenningPort)):
sleep(0.1)
# Create the packet handler
self.__pHandler = MainServerPacketHandler(self.__manager)
# Create the update thread
self.__updateRequestThread = StatusDatabaseUpdateThread(
_MainServerConnectorUpdateHandler(self), 20)
# Start it
self.__updateRequestThread.start()
def disconnectFromMainServer(self):
# Discard all the incoming packets and the scheduled updates
self.__stopped = True
# Stop the update request thread
self.__updateRequestThread.stop()
# Close the database connections
self.__reader.disconnect()
self.__writer.disconnect()
# Stop the network service
self.__manager.stopNetworkService()
# Delete the status database
dbConfigurator = DBConfigurator(self.__rootsPassword)
dbConfigurator.dropDatabase(self.__databaseName)
def getImages(self):
return self.__reader.getImages()
def getVMServersData(self):
return self.__reader.getVMServersData()
def registerVMServer(self, vmServerIP, vmServerPort, vmServerName):
p = self.__pHandler.createVMServerRegistrationPacket(
vmServerIP, vmServerPort, vmServerName)
self.__manager.sendPacket(self.__mainServerPort, p)
def unregisterVMServer(self, vmServerNameOrIP, halt):
p = self.__pHandler.createVMServerUnregistrationOrShutdownPacket(
vmServerNameOrIP, halt, False)
self.__manager.sendPacket(self.__mainServerPort, p)
def bootUpVMServer(self, vmServerNameOrIP):
p = self.__pHandler.createVMServerBootUpPacket(vmServerNameOrIP)
self.__manager.sendPacket(self.__mainServerPort, p)
def shutdownVMServer(self, vmServerNameOrIP, halt):
p = self.__pHandler.createVMServerUnregistrationOrShutdownPacket(
vmServerNameOrIP, halt, True)
self.__manager.sendPacket(self.__mainServerPort, p)
def bootUpVirtualMachine(self, imageName, userID):
p = self.__pHandler.createVMBootRequestPacket(imageName, userID)
self.__manager.sendPacket(self.__mainServerPort, p)
def _processIncomingPacket(self, packet):
if (self.__stopped):
return
data = self.__pHandler.readPacket(packet)
if (data["packet_type"] == PACKET_T.VM_SERVERS_STATUS_DATA):
self.__writer.processVMServerSegment(data["Segment"],
data["SequenceSize"],
data["Data"])
elif (data["packet_type"] == PACKET_T.AVAILABLE_IMAGES_DATA):
self.__writer.processImageSegment(data["Segment"],
data["SequenceSize"],
data["Data"])
elif (data["packet_type"] == PACKET_T.VM_SERVER_BOOTUP_ERROR):
self.__callback.handleVMServerBootUpError(
data["ServerNameOrIPAddress"], data["ErrorMessage"])
elif (data["packet_type"] == PACKET_T.VM_SERVER_REGISTRATION_ERROR):
self.__callback.handleVMServerRegistrationError(
data["ServerNameOrIPAddress"], data["ErrorMessage"])
elif (data["packet_type"] == PACKET_T.VM_BOOT_FAILURE):
self.__callback.handleVMBootFailure(data["VMName"], data["UserID"],
data["ErrorMessage"])
elif (data["packet_type"] == PACKET_T.VM_CONNECTION_DATA):
self.__callback.handleVMConnectionData(data["UserID"],
data["VNCServerIPAddress"],
data["VNCServerPort"],
data["VNCServerPassword"])
def _sendUpdateRequestPackets(self):
if (self.__stopped):
return
# Send some update request packets to the main server
p = self.__pHandler.createDataRequestPacket(
PACKET_T.QUERY_VM_SERVERS_STATUS)
self.__manager.sendPacket(self.__mainServerPort, p)
p = self.__pHandler.createDataRequestPacket(
PACKET_T.QUERY_AVAILABLE_IMAGES)
self.__manager.sendPacket(self.__mainServerPort, p)