def connectToClusterServer(self, useSSL, certificatePath, clusterServerIP,
clusterServerListenningPort,
statusDBUpdateInterval, commandTimeout,
commandTimeoutCheckInterval):
"""
Establishes a connection with the cluster server
Args:
certificatePath: the directory where the server.crt and server.key files are
clusterServerIP: the cluster server's IP address
clusterServerListenningPort: the cluster server commands connection's port
statusDBUpdateInterval: the database update interval (in seconds)
Returns:
Nothing
"""
self.__networkManager = NetworkManager(certificatePath)
self.__networkManager.startNetworkService()
self.__clusterServerIP = clusterServerIP
self.__clusterServerPort = clusterServerListenningPort
self.__packetHandler = ClusterServerPacketHandler(
self.__networkManager)
self.__commandsProcessor = CommandsProcessor(
self.__commandsHandler, self.__packetHandler,
self.__networkManager, self.__clusterServerIP,
self.__clusterServerPort, self.__commandsDBConnector,
self.__endpointDBConnector)
packetReactor = ClusterEndpointPacketReactor(
self.__codeTranslator, self.__commandsHandler,
self.__packetHandler, self.__commandsProcessor,
self.__endpointDBConnector, self.__commandsDBConnector)
try:
self.__networkManager.connectTo(clusterServerIP,
clusterServerListenningPort, 5,
packetReactor, useSSL)
while (not self.__networkManager.isConnectionReady(
clusterServerIP, clusterServerListenningPort)):
sleep(0.1)
self.__updateRequestThread = VMServerMonitoringThread(
self.__packetHandler, self.__networkManager,
self.__commandsProcessor, self.__clusterServerIP,
self.__clusterServerPort, statusDBUpdateInterval)
self.__updateRequestThread.start()
self.__commandExecutionThread = CommandsMonitoringThread(
self.__commandsDBConnector, commandTimeout,
self.__commandsHandler, commandTimeoutCheckInterval)
self.__commandExecutionThread.start()
except NetworkManagerException as e:
raise Exception(e.message)
