def disconnectFromClusterServer(self):
"""
Cierra la conexión con el servidor de cluster y borra las bases de datos de estado
Argumentos:
Ninguno
Devuelve:
Nada
@attention: Este método debe llamarse desde el hilo principal para evitar cuelgues
"""
# Apagar el servidor de cluster
p = self.__repositoryPacketHandler.createHaltPacket(
self.__haltVMServers)
errorMessage = self.__manager.sendPacket(self.__clusterServerIP,
self.__clusterServerPort, p)
NetworkManager.printConnectionWarningIfNecessary(
self.__clusterServerIP, self.__clusterServerPort,
"Cluster server halt", errorMessage)
# Dejar de actualizar las bases de datos
self.__updateRequestThread.stop()
# Dejar de monitorizar los comandos
self.__commandMonitoringThread.stop()
# Cerrar las conexiones con las bases de datos
self.closeNetworkAndDBConnections()
def __sendUpdateRequestPackets(self):
"""
Sends the update request packets to the cluster server
Args:
None
Returns:
Nothing
"""
if (self.__commandsProcessor.finish()) :
return
p = self.__packetHandler.createDataRequestPacket(PACKET_T.QUERY_VM_SERVERS_STATUS)
errorMessage = self.__networkManager.sendPacket(self.__clusterServerIP, self.__clusterServerPort, p)
NetworkManager.printConnectionWarningIfNecessary(self.__clusterServerIP, self.__clusterServerPort, "Virtual machine servers status", errorMessage)
p = self.__packetHandler.createDataRequestPacket(PACKET_T.QUERY_VM_DISTRIBUTION)
errorMessage = self.__networkManager.sendPacket(self.__clusterServerIP, self.__clusterServerPort, p)
NetworkManager.printConnectionWarningIfNecessary(self.__clusterServerIP, self.__clusterServerPort, "Virtual machine distribution", errorMessage)
p = self.__packetHandler.createDataRequestPacket(PACKET_T.QUERY_ACTIVE_VM_VNC_DATA)
errorMessage = self.__networkManager.sendPacket(self.__clusterServerIP, self.__clusterServerPort, p)
NetworkManager.printConnectionWarningIfNecessary(self.__clusterServerIP, self.__clusterServerPort, "Active virtual machines data", errorMessage)
p = self.__packetHandler.createDataRequestPacket(PACKET_T.QUERY_REPOSITORY_STATUS)
errorMessage = self.__networkManager.sendPacket(self.__clusterServerIP, self.__clusterServerPort, p)
NetworkManager.printConnectionWarningIfNecessary(self.__clusterServerIP, self.__clusterServerPort, "Image repository status", errorMessage)
p = self.__packetHandler.createDataRequestPacket(PACKET_T.QUERY_VM_SERVERS_RESOURCE_USAGE)
errorMessage = self.__networkManager.sendPacket(self.__clusterServerIP, self.__clusterServerPort, p)
NetworkManager.printConnectionWarningIfNecessary(self.__clusterServerIP, self.__clusterServerPort, "Virtual machine servers resource usage", errorMessage)
def __requestVNCConnectionData(self):
"""
Processes a VNC connection data request packet
Args:
data: a dictionary containing the incoming packet's data
Returns:
Nothing
"""
p = self.__vmServerPacketHandler.createVMServerDataRequestPacket(VMSRVR_PACKET_T.QUERY_ACTIVE_VM_DATA)
connectionData = self.__commandsDBConnector.getActiveVMServersConnectionData()
for cd in connectionData :
errorMessage = self.__networkManager.sendPacket(cd["ServerIP"], cd["ServerPort"], p)
NetworkManager.printConnectionWarningIfNecessary(cd["ServerIP"], cd["ServerPort"], "VNC connection data request", errorMessage)
def __sendStatusRequestToVMServer(self, vmServerIP, vmServerPort):
"""
Sends a status request packet to a virtual machine server
Args:
vmServerIP : the virtual machine server's IP address
vmServerPort: the virtual machine server control connection's port
Returns:
Nothing
"""
p = self.__vmServerPacketHandler.createVMServerDataRequestPacket(VMSRVR_PACKET_T.SERVER_STATUS_REQUEST)
errorMessage = self.__networkManager.sendPacket(vmServerIP, vmServerPort, p)
NetworkManager.printConnectionWarningIfNecessary(vmServerIP, vmServerPort, "status request", errorMessage)
p = self.__vmServerPacketHandler.createVMServerDataRequestPacket(VMSRVR_PACKET_T.QUERY_ACTIVE_DOMAIN_UIDS)
errorMessage = self.__networkManager.sendPacket(vmServerIP, vmServerPort, p)
NetworkManager.printConnectionWarningIfNecessary(vmServerIP, vmServerPort, "active domain UIDs request", errorMessage)
def disconnectFromClusterServer(self):
"""
Closes the connection with the cluster server
Args:
None
Devuelve:
Nada
"""
p = self.__packetHandler.createHaltPacket(self.__commandsProcessor.haltVMServers())
errorMessage = self.__networkManager.sendPacket(self.__clusterServerIP, self.__clusterServerPort, p)
NetworkManager.printConnectionWarningIfNecessary(self.__clusterServerIP, self.__clusterServerPort, "Cluster server halt",
errorMessage)
self.__updateRequestThread.stop()
self.__commandExecutionThread.stop()
self.closeNetworkConnections()
def __requestVNCConnectionData(self):
"""
Processes a VNC connection data request packet
Args:
data: a dictionary containing the incoming packet's data
Returns:
Nothing
"""
p = self.__vmServerPacketHandler.createVMServerDataRequestPacket(
VMSRVR_PACKET_T.QUERY_ACTIVE_VM_DATA)
connectionData = self.__commandsDBConnector.getActiveVMServersConnectionData(
)
for cd in connectionData:
errorMessage = self.__networkManager.sendPacket(
cd["ServerIP"], cd["ServerPort"], p)
NetworkManager.printConnectionWarningIfNecessary(
cd["ServerIP"], cd["ServerPort"],
"VNC connection data request", errorMessage)
def disconnectFromClusterServer(self):
"""
Closes the connection with the cluster server
Args:
None
Devuelve:
Nada
"""
p = self.__packetHandler.createHaltPacket(
self.__commandsProcessor.haltVMServers())
errorMessage = self.__networkManager.sendPacket(
self.__clusterServerIP, self.__clusterServerPort, p)
NetworkManager.printConnectionWarningIfNecessary(
self.__clusterServerIP, self.__clusterServerPort,
"Cluster server halt", errorMessage)
self.__updateRequestThread.stop()
self.__commandExecutionThread.stop()
self.closeNetworkConnections()
def _sendUpdateRequestPackets(self):
"""
Solicita información de estado al serividor de cluster
Argumentos:
Ninguno
Devuelve:
Nada
"""
if (self.__stopped):
return
# Enviamos paquetes para obtener los tres tipos de información que necesitamos para actualizar la base de datos de estado
p = self.__repositoryPacketHandler.createDataRequestPacket(
PACKET_T.QUERY_VM_SERVERS_STATUS)
errorMessage = self.__manager.sendPacket(self.__clusterServerIP,
self.__clusterServerPort, p)
NetworkManager.printConnectionWarningIfNecessary(
self.__clusterServerIP, self.__clusterServerPort,
"Virtual machine servers status", errorMessage)
p = self.__repositoryPacketHandler.createDataRequestPacket(
PACKET_T.QUERY_VM_DISTRIBUTION)
errorMessage = self.__manager.sendPacket(self.__clusterServerIP,
self.__clusterServerPort, p)
NetworkManager.printConnectionWarningIfNecessary(
self.__clusterServerIP, self.__clusterServerPort,
"Virtual machine distribution", errorMessage)
p = self.__repositoryPacketHandler.createDataRequestPacket(
PACKET_T.QUERY_ACTIVE_VM_DATA)
errorMessage = self.__manager.sendPacket(self.__clusterServerIP,
self.__clusterServerPort, p)
NetworkManager.printConnectionWarningIfNecessary(
self.__clusterServerIP, self.__clusterServerPort,
"Active virtual machines data", errorMessage)
def __sendStatusRequestToVMServer(self, vmServerIP, vmServerPort):
"""
Sends a status request packet to a virtual machine server
Args:
vmServerIP : the virtual machine server's IP address
vmServerPort: the virtual machine server control connection's port
Returns:
Nothing
"""
p = self.__vmServerPacketHandler.createVMServerDataRequestPacket(
VMSRVR_PACKET_T.SERVER_STATUS_REQUEST)
errorMessage = self.__networkManager.sendPacket(
vmServerIP, vmServerPort, p)
NetworkManager.printConnectionWarningIfNecessary(
vmServerIP, vmServerPort, "status request", errorMessage)
p = self.__vmServerPacketHandler.createVMServerDataRequestPacket(
VMSRVR_PACKET_T.QUERY_ACTIVE_DOMAIN_UIDS)
errorMessage = self.__networkManager.sendPacket(
vmServerIP, vmServerPort, p)
NetworkManager.printConnectionWarningIfNecessary(
vmServerIP, vmServerPort, "active domain UIDs request",
errorMessage)
def disconnectFromClusterServer(self):
"""
Cierra la conexión con el servidor de cluster y borra las bases de datos de estado
Argumentos:
Ninguno
Devuelve:
Nada
@attention: Este método debe llamarse desde el hilo principal para evitar cuelgues
"""
# Apagar el servidor de cluster
p = self.__repositoryPacketHandler.createHaltPacket(self.__haltVMServers)
errorMessage = self.__manager.sendPacket(self.__clusterServerIP, self.__clusterServerPort, p)
NetworkManager.printConnectionWarningIfNecessary(self.__clusterServerIP, self.__clusterServerPort, "Cluster server halt",
errorMessage)
# Dejar de actualizar las bases de datos
self.__updateRequestThread.stop()
# Dejar de monitorizar los comandos
self.__commandMonitoringThread.stop()
# Cerrar las conexiones con las bases de datos
self.closeNetworkAndDBConnections()
def _sendUpdateRequestPackets(self):
"""
Solicita información de estado al serividor de cluster
Argumentos:
Ninguno
Devuelve:
Nada
"""
if (self.__stopped) :
return
# Enviamos paquetes para obtener los tres tipos de información que necesitamos para actualizar la base de datos de estado
p = self.__repositoryPacketHandler.createDataRequestPacket(PACKET_T.QUERY_VM_SERVERS_STATUS)
errorMessage = self.__manager.sendPacket(self.__clusterServerIP, self.__clusterServerPort, p)
NetworkManager.printConnectionWarningIfNecessary(self.__clusterServerIP, self.__clusterServerPort, "Virtual machine servers status", errorMessage)
p = self.__repositoryPacketHandler.createDataRequestPacket(PACKET_T.QUERY_VM_DISTRIBUTION)
errorMessage = self.__manager.sendPacket(self.__clusterServerIP, self.__clusterServerPort, p)
NetworkManager.printConnectionWarningIfNecessary(self.__clusterServerIP, self.__clusterServerPort, "Virtual machine distribution", errorMessage)
p = self.__repositoryPacketHandler.createDataRequestPacket(PACKET_T.QUERY_ACTIVE_VM_DATA)
errorMessage = self.__manager.sendPacket(self.__clusterServerIP, self.__clusterServerPort, p)
NetworkManager.printConnectionWarningIfNecessary(self.__clusterServerIP, self.__clusterServerPort, "Active virtual machines data", errorMessage)
