def _processIncomingPacket(self, packet):
"""
Processes an incoming package (sent from the cluster server).
Args:
packet: the packet to process
Returns:
Nothing
"""
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.VM_DISTRIBUTION_DATA):
self.__writer.processVMDistributionSegment(data["Segment"],
data["SequenceSize"],
data["Data"])
elif (data["packet_type"] == PACKET_T.ACTIVE_VM_DATA):
self.__writer.processActiveVMSegment(data["Segment"],
data["SequenceSize"],
data["VMServerIP"],
data["Data"])
else:
l = data["CommandID"].split("|")
commandID = (int(l[0]), float(l[1]))
if (data["packet_type"] == PACKET_T.COMMAND_EXECUTED):
self.__commandsDBConnector.removeExecutedCommand(commandID)
else:
# Command outputs => serialize and add them to the commands database
if (data["packet_type"] == PACKET_T.VM_SERVER_BOOTUP_ERROR
or data["packet_type"]
== PACKET_T.VM_SERVER_UNREGISTRATION_ERROR
or data["packet_type"]
== PACKET_T.VM_SERVER_SHUTDOWN_ERROR):
(outputType, outputContent
) = CommandsHandler.createVMServerGenericErrorOutput(
data["packet_type"], data["ServerNameOrIPAddress"],
data["ErrorMessage"])
elif (data["packet_type"] ==
PACKET_T.VM_SERVER_REGISTRATION_ERROR):
(outputType, outputContent
) = CommandsHandler.createVMServerRegistrationErrorOutput(
data["VMServerIP"], data["VMServerPort"],
data["VMServerName"], data["ErrorMessage"])
elif (data["packet_type"] == PACKET_T.VM_BOOT_FAILURE):
(outputType, outputContent
) = CommandsHandler.createVMBootFailureErrorOutput(
data["VMID"], data["ErrorMessage"])
elif (data["packet_type"] == PACKET_T.VM_CONNECTION_DATA):
(outputType, outputContent
) = CommandsHandler.createVMConnectionDataOutput(
data["VNCServerIPAddress"], data["VNCServerPort"],
data["VNCServerPassword"])
self.__commandsDBConnector.addCommandOutput(
commandID, outputType, outputContent)
def processCommands(self):
"""
Processes the commands sent from the web connectors.
Args:
None
Returns:
Nothing
@attention: This method will only finish after processing a halt command.
"""
while not self.__stopped :
commandData = self.__commandsDBConnector.popCommand()
if (commandData == None) :
sleep(0.1)
else :
(commandID, commandType, commandArgs) = commandData
parsedArgs = CommandsHandler.deserializeCommandArgs(commandType, commandArgs)
if (commandType != COMMAND_TYPE.HALT) :
serializedCommandID = "{0}|{1}".format(commandID[0], commandID[1])
if (commandType == COMMAND_TYPE.BOOTUP_VM_SERVER) :
packet = self.__pHandler.createVMServerBootUpPacket(parsedArgs["VMServerNameOrIP"], serializedCommandID)
elif (commandType == COMMAND_TYPE.REGISTER_VM_SERVER) :
packet = self.__pHandler.createVMServerRegistrationPacket(parsedArgs["VMServerIP"],
parsedArgs["VMServerPort"], parsedArgs["VMServerName"], serializedCommandID)
elif (commandType == COMMAND_TYPE.UNREGISTER_OR_SHUTDOWN_VM_SERVER) :
packet = self.__pHandler.createVMServerUnregistrationOrShutdownPacket(parsedArgs["VMServerNameOrIP"],
parsedArgs["Halt"], parsedArgs["Unregister"], serializedCommandID)
elif (commandType == COMMAND_TYPE.VM_BOOT_REQUEST) :
packet = self.__pHandler.createVMBootRequestPacket(parsedArgs["VMID"], parsedArgs["UserID"], serializedCommandID)
self.__manager.sendPacket(self.__clusterServerIP, self.__clusterServerPort, packet)
else :
self.__stopped = True
self.__haltVMServers = parsedArgs["HaltVMServers"]
def _processIncomingPacket(self, packet):
"""
Processes an incoming package (sent from the cluster server).
Args:
packet: the packet to process
Returns:
Nothing
"""
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.VM_DISTRIBUTION_DATA) :
self.__writer.processVMDistributionSegment(data["Segment"], data["SequenceSize"], data["Data"])
elif (data["packet_type"] == PACKET_T.ACTIVE_VM_DATA) :
self.__writer.processActiveVMSegment(data["Segment"], data["SequenceSize"], data["VMServerIP"], data["Data"])
else :
l = data["CommandID"].split("|")
commandID = (int(l[0]), float(l[1]))
if (data["packet_type"] == PACKET_T.COMMAND_EXECUTED) :
self.__commandsDBConnector.removeExecutedCommand(commandID)
else :
# Command outputs => serialize and add them to the commands database
if (data["packet_type"] == PACKET_T.VM_SERVER_BOOTUP_ERROR or
data["packet_type"] == PACKET_T.VM_SERVER_UNREGISTRATION_ERROR or
data["packet_type"] == PACKET_T.VM_SERVER_SHUTDOWN_ERROR) :
(outputType, outputContent) = CommandsHandler.createVMServerGenericErrorOutput(
data["packet_type"], data["ServerNameOrIPAddress"], data["ErrorMessage"])
elif (data["packet_type"] == PACKET_T.VM_SERVER_REGISTRATION_ERROR) :
(outputType, outputContent) = CommandsHandler.createVMServerRegistrationErrorOutput(
data["VMServerIP"], data["VMServerPort"], data["VMServerName"], data["ErrorMessage"])
elif (data["packet_type"] == PACKET_T.VM_BOOT_FAILURE) :
(outputType, outputContent) = CommandsHandler.createVMBootFailureErrorOutput(
data["VMID"], data["ErrorMessage"])
elif (data["packet_type"] == PACKET_T.VM_CONNECTION_DATA) :
(outputType, outputContent) = CommandsHandler.createVMConnectionDataOutput(
data["VNCServerIPAddress"], data["VNCServerPort"], data["VNCServerPassword"])
self.__commandsDBConnector.addCommandOutput(commandID, outputType, outputContent)
def processCommands(self):
"""
Processes the commands sent from the web connectors.
Args:
None
Returns:
Nothing
@attention: This method will only finish after processing a halt command.
"""
while not self.__stopped:
commandData = self.__commandsDBConnector.popCommand()
if (commandData == None):
sleep(0.1)
else:
(commandID, commandType, commandArgs) = commandData
parsedArgs = CommandsHandler.deserializeCommandArgs(
commandType, commandArgs)
if (commandType != COMMAND_TYPE.HALT):
serializedCommandID = "{0}|{1}".format(
commandID[0], commandID[1])
if (commandType == COMMAND_TYPE.BOOTUP_VM_SERVER):
packet = self.__pHandler.createVMServerBootUpPacket(
parsedArgs["VMServerNameOrIP"],
serializedCommandID)
elif (commandType == COMMAND_TYPE.REGISTER_VM_SERVER):
packet = self.__pHandler.createVMServerRegistrationPacket(
parsedArgs["VMServerIP"],
parsedArgs["VMServerPort"],
parsedArgs["VMServerName"], serializedCommandID)
elif (commandType ==
COMMAND_TYPE.UNREGISTER_OR_SHUTDOWN_VM_SERVER):
packet = self.__pHandler.createVMServerUnregistrationOrShutdownPacket(
parsedArgs["VMServerNameOrIP"], parsedArgs["Halt"],
parsedArgs["Unregister"], serializedCommandID)
elif (commandType == COMMAND_TYPE.VM_BOOT_REQUEST):
packet = self.__pHandler.createVMBootRequestPacket(
parsedArgs["VMID"], parsedArgs["UserID"],
serializedCommandID)
self.__manager.sendPacket(self.__clusterServerIP,
self.__clusterServerPort, packet)
else:
self.__stopped = True
self.__haltVMServers = parsedArgs["HaltVMServers"]
