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)
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)
def startListenning(self, useSSL, certificatePath, listenningPort, repositoryIP, repositoryPort, vmServerStatusUpdateInterval):
"""
Creates the control connection
Args:
useSSL: indicates if SSL encryption must be used in the control connection or not
certificatePath: the directory where the server.crt and server.key files are
listenningPort: the control connection's port
repositoryIP: the image repository IP address
repositoryPort: the image repository's port
vmServerStatusUpdateInterval: the virtual machine server status database interval
Returns:
Nothing
"""
self.__networkManager = NetworkManager(certificatePath)
self.__networkManager.startNetworkService()
self.__listenningPort = listenningPort
self.__packetHandler = ClusterServerPacketHandler(self.__networkManager)
self.__useSSL = useSSL
imageRepositoryPacketHandler = ImageRepositoryPacketHandler(self.__networkManager)
vmServerPacketHandler = VMServerPacketHandler(self.__networkManager)
networkEventsReactor = NetworkEventsReactor(self.__dbConnector, repositoryIP, repositoryPort)
imageRepositoryPacketReactor = ImageRepositoryPacketReactor(self.__dbConnector, self.__networkManager,
listenningPort, repositoryIP, repositoryPort,
self.__packetHandler, vmServerPacketHandler, imageRepositoryPacketHandler)
try :
imageRepositoryCallback = ImageRepositoryCallback(imageRepositoryPacketReactor, networkEventsReactor)
self.__networkManager.connectTo(repositoryIP, repositoryPort, 10, imageRepositoryCallback, self.__useSSL, True)
self.__dbConnector.addImageRepository(repositoryIP, repositoryPort, SERVER_STATE_T.READY)
except Exception as e:
print "Can't connect to the image repository: " + e.message
self.__exit = True
return
vmServerPacketReactor = VMServerPacketReactor(self.__dbConnector, self.__networkManager, listenningPort,
vmServerPacketHandler, self.__packetHandler)
self.__endpointPacketReactor = EndpointPacketReactor(self.__dbConnector, self.__networkManager,
vmServerPacketHandler, self.__packetHandler,
imageRepositoryPacketHandler,
VMServerCallback(vmServerPacketReactor, networkEventsReactor),
listenningPort, repositoryIP, repositoryPort, self.__loadBalancerSettings,
self.__averageCompressionRatio, self.__useSSL)
clusterEndpointCallback = ClusterEndpointCallback(self.__endpointPacketReactor)
self.__networkManager.listenIn(listenningPort, clusterEndpointCallback, self.__useSSL)
self.__statusMonitoringThread = ClusterStatusMonitoringThread(vmServerStatusUpdateInterval,
self.__dbConnector, self.__networkManager,
repositoryIP, repositoryPort,
vmServerPacketHandler, imageRepositoryPacketHandler)
self.__statusMonitoringThread.start()
class ClusterEndpointEntryPoint(object):
"""
These objects create, run and stop the cluster endpoint daemons.
"""
def __init__(self):
"""
Initializes the daemon's state
Args:
None
"""
self.__commandExecutionThread = None
self.__updateRequestThread = None
self.__codeTranslator = SpanishCodesTranslator()
self.__commandsHandler = CommandsHandler(self.__codeTranslator)
def connectToDatabases(self, mysqlRootsPassword, endpointDBName,
commandsDBName, endpointdbSQLFilePath,
commandsDBSQLFilePath, websiteUser,
websiteUserPassword, endpointUser,
endpointUserPassword, minCommandInterval):
"""
Establishes the connection with the two databases
Args:
mysqlRootsPassword: the MySQL root's password
endpointDBName: the endpoint database's name
endpointdbSQLFilePath: the endpoint database's schema definition file path
websiteUser: the web application's username
websiteUserPassword: the web application's username
endpointUser: the endpoint daemon user's name
endpointUserPassword: the endpoint daemon user's password
"""
self.__rootsPassword = mysqlRootsPassword
self.__statusDatabaseName = endpointDBName
self.__commandsDatabaseName = commandsDBName
configurator = DBConfigurator(mysqlRootsPassword)
configurator.runSQLScript(endpointDBName, endpointdbSQLFilePath,
"root", mysqlRootsPassword)
configurator.runSQLScript(commandsDBName, commandsDBSQLFilePath,
"root", mysqlRootsPassword)
configurator.addUser(websiteUser, websiteUserPassword, endpointDBName,
False)
configurator.addUser(endpointUser, endpointUserPassword,
endpointDBName, True)
configurator.addUser(websiteUser, websiteUserPassword, commandsDBName,
True)
configurator.addUser(endpointUser, endpointUserPassword,
commandsDBName, True)
self.__commandsDBConnector = CommandsDatabaseConnector(
endpointUser, endpointUserPassword, commandsDBName,
minCommandInterval)
self.__endpointDBConnector = ClusterEndpointDBConnector(
endpointUser, endpointUserPassword, endpointDBName)
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)
def doEmergencyStop(self):
"""
Stops the endpoint daemon immediately
Args:
None
Returns:
Nothing
"""
self.__networkManager.stopNetworkService()
if (self.__updateRequestThread != None):
self.__updateRequestThread.stop()
if (self.__commandExecutionThread != None):
self.__commandExecutionThread.stop()
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 closeNetworkConnections(self):
"""
Closes the network connections
Args:
None
Returns:
Nothing
"""
self.__networkManager.stopNetworkService()
def processCommands(self):
"""
Processes the users' requests
Args:
None
Returns:
Nothing
"""
self.__commandsProcessor.processCommands()
def startListenning(self, useSSL, certificatePath, listenningPort,
repositoryIP, repositoryPort,
vmServerStatusUpdateInterval):
"""
Creates the control connection
Args:
useSSL: indicates if SSL encryption must be used in the control connection or not
certificatePath: the directory where the server.crt and server.key files are
listenningPort: the control connection's port
repositoryIP: the image repository IP address
repositoryPort: the image repository's port
vmServerStatusUpdateInterval: the virtual machine server status database interval
Returns:
Nothing
"""
self.__networkManager = NetworkManager(certificatePath)
self.__networkManager.startNetworkService()
self.__listenningPort = listenningPort
self.__packetHandler = ClusterServerPacketHandler(
self.__networkManager)
self.__useSSL = useSSL
imageRepositoryPacketHandler = ImageRepositoryPacketHandler(
self.__networkManager)
vmServerPacketHandler = VMServerPacketHandler(self.__networkManager)
networkEventsReactor = NetworkEventsReactor(self.__dbConnector,
repositoryIP,
repositoryPort)
imageRepositoryPacketReactor = ImageRepositoryPacketReactor(
self.__dbConnector, self.__networkManager, listenningPort,
repositoryIP, repositoryPort, self.__packetHandler,
vmServerPacketHandler, imageRepositoryPacketHandler)
try:
imageRepositoryCallback = ImageRepositoryCallback(
imageRepositoryPacketReactor, networkEventsReactor)
self.__networkManager.connectTo(repositoryIP, repositoryPort, 10,
imageRepositoryCallback,
self.__useSSL, True)
self.__dbConnector.addImageRepository(repositoryIP, repositoryPort,
SERVER_STATE_T.READY)
except Exception as e:
print "Can't connect to the image repository: " + e.message
self.__exit = True
return
vmServerPacketReactor = VMServerPacketReactor(self.__dbConnector,
self.__networkManager,
listenningPort,
vmServerPacketHandler,
self.__packetHandler)
self.__endpointPacketReactor = EndpointPacketReactor(
self.__dbConnector, self.__networkManager, vmServerPacketHandler,
self.__packetHandler, imageRepositoryPacketHandler,
VMServerCallback(vmServerPacketReactor,
networkEventsReactor), listenningPort,
repositoryIP, repositoryPort, self.__loadBalancerSettings,
self.__averageCompressionRatio, self.__useSSL)
clusterEndpointCallback = ClusterEndpointCallback(
self.__endpointPacketReactor)
self.__networkManager.listenIn(listenningPort, clusterEndpointCallback,
self.__useSSL)
self.__statusMonitoringThread = ClusterStatusMonitoringThread(
vmServerStatusUpdateInterval, self.__dbConnector,
self.__networkManager, repositoryIP, repositoryPort,
vmServerPacketHandler, imageRepositoryPacketHandler)
self.__statusMonitoringThread.start()
class ClusterServerMainReactor(object):
'''
This class is associated with the cluster server main reactor.
'''
def __init__(self, loadBalancerSettings, averageCompressionRatio, timeout):
"""
Initializes the reactor's state
Args:
loadBalancerSettings: a list containing the load balancing algorithm settings
averageCompressionRation: the compression algorithm's average compression ratio
timeout: the virtual machine boot commands timeout
"""
self.__exit = False
self.__loadBalancerSettings = loadBalancerSettings
self.__averageCompressionRatio = averageCompressionRatio
self.__timeout = timeout
self.__statusMonitoringThread = None
def connectToDatabase(self, mysqlRootsPassword, dbName, dbUser, dbPassword,
scriptPath):
"""
Establishes a connection with the cluster server database
Args:
mysqlRootsPassword: the MySQL root user's password
dbName: a database name
dbUser: a MySQL user name
dbPassword: the user's password
scriptPath: the schema definition script
Returns:
Nothing
"""
configurator = DBConfigurator(mysqlRootsPassword)
configurator.runSQLScript(dbName, scriptPath, "root",
mysqlRootsPassword)
configurator.addUser(dbUser, dbPassword, dbName, True)
self.__dbConnector = ClusterServerDatabaseConnector(
dbUser, dbPassword, dbName)
self.__dbConnector.initializeVMServersStatus()
def startListenning(self, useSSL, certificatePath, listenningPort,
repositoryIP, repositoryPort,
vmServerStatusUpdateInterval):
"""
Creates the control connection
Args:
useSSL: indicates if SSL encryption must be used in the control connection or not
certificatePath: the directory where the server.crt and server.key files are
listenningPort: the control connection's port
repositoryIP: the image repository IP address
repositoryPort: the image repository's port
vmServerStatusUpdateInterval: the virtual machine server status database interval
Returns:
Nothing
"""
self.__networkManager = NetworkManager(certificatePath)
self.__networkManager.startNetworkService()
self.__listenningPort = listenningPort
self.__packetHandler = ClusterServerPacketHandler(
self.__networkManager)
self.__useSSL = useSSL
imageRepositoryPacketHandler = ImageRepositoryPacketHandler(
self.__networkManager)
vmServerPacketHandler = VMServerPacketHandler(self.__networkManager)
networkEventsReactor = NetworkEventsReactor(self.__dbConnector,
repositoryIP,
repositoryPort)
imageRepositoryPacketReactor = ImageRepositoryPacketReactor(
self.__dbConnector, self.__networkManager, listenningPort,
repositoryIP, repositoryPort, self.__packetHandler,
vmServerPacketHandler, imageRepositoryPacketHandler)
try:
imageRepositoryCallback = ImageRepositoryCallback(
imageRepositoryPacketReactor, networkEventsReactor)
self.__networkManager.connectTo(repositoryIP, repositoryPort, 10,
imageRepositoryCallback,
self.__useSSL, True)
self.__dbConnector.addImageRepository(repositoryIP, repositoryPort,
SERVER_STATE_T.READY)
except Exception as e:
print "Can't connect to the image repository: " + e.message
self.__exit = True
return
vmServerPacketReactor = VMServerPacketReactor(self.__dbConnector,
self.__networkManager,
listenningPort,
vmServerPacketHandler,
self.__packetHandler)
self.__endpointPacketReactor = EndpointPacketReactor(
self.__dbConnector, self.__networkManager, vmServerPacketHandler,
self.__packetHandler, imageRepositoryPacketHandler,
VMServerCallback(vmServerPacketReactor,
networkEventsReactor), listenningPort,
repositoryIP, repositoryPort, self.__loadBalancerSettings,
self.__averageCompressionRatio, self.__useSSL)
clusterEndpointCallback = ClusterEndpointCallback(
self.__endpointPacketReactor)
self.__networkManager.listenIn(listenningPort, clusterEndpointCallback,
self.__useSSL)
self.__statusMonitoringThread = ClusterStatusMonitoringThread(
vmServerStatusUpdateInterval, self.__dbConnector,
self.__networkManager, repositoryIP, repositoryPort,
vmServerPacketHandler, imageRepositoryPacketHandler)
self.__statusMonitoringThread.start()
def monitorVMBootCommands(self):
"""
Deletes the timed out virtual machine boot commands
Args:
None
Returns:
Nothing
"""
while not self.__exit and not self.__endpointPacketReactor.hasFinished(
):
data = self.__dbConnector.getOldVMBootCommandID(self.__timeout)
if (data == None):
sleep(1)
else:
self.__dbConnector.deleteActiveVMLocation(data[0])
p = self.__packetHandler.createErrorPacket(
CLUSTER_SERVER_PACKET_T.VM_BOOT_FAILURE,
ERROR_DESC_T.CLSRVR_VM_BOOT_TIMEOUT, data[0])
self.__networkManager.sendPacket('', self.__listenningPort, p)
def closeNetworkConnections(self):
"""
Closes the control connection
Args:
None
Returns:
Nothing
"""
if (self.__statusMonitoringThread != None):
self.__statusMonitoringThread.stop()
self.__networkManager.stopNetworkService()
class ClusterServerMainReactor(object):
'''
This class is associated with the cluster server main reactor.
'''
def __init__(self, loadBalancerSettings, averageCompressionRatio, timeout):
"""
Initializes the reactor's state
Args:
loadBalancerSettings: a list containing the load balancing algorithm settings
averageCompressionRation: the compression algorithm's average compression ratio
timeout: the virtual machine boot commands timeout
"""
self.__exit = False
self.__loadBalancerSettings = loadBalancerSettings
self.__averageCompressionRatio = averageCompressionRatio
self.__timeout = timeout
self.__statusMonitoringThread = None
def connectToDatabase(self, mysqlRootsPassword, dbName, dbUser, dbPassword, scriptPath):
"""
Establishes a connection with the cluster server database
Args:
mysqlRootsPassword: the MySQL root user's password
dbName: a database name
dbUser: a MySQL user name
dbPassword: the user's password
scriptPath: the schema definition script
Returns:
Nothing
"""
configurator = DBConfigurator(mysqlRootsPassword)
configurator.runSQLScript(dbName, scriptPath, "root", mysqlRootsPassword)
configurator.addUser(dbUser, dbPassword, dbName, True)
self.__dbConnector = ClusterServerDatabaseConnector(dbUser, dbPassword, dbName)
self.__dbConnector.initializeVMServersStatus()
def startListenning(self, useSSL, certificatePath, listenningPort, repositoryIP, repositoryPort, vmServerStatusUpdateInterval):
"""
Creates the control connection
Args:
useSSL: indicates if SSL encryption must be used in the control connection or not
certificatePath: the directory where the server.crt and server.key files are
listenningPort: the control connection's port
repositoryIP: the image repository IP address
repositoryPort: the image repository's port
vmServerStatusUpdateInterval: the virtual machine server status database interval
Returns:
Nothing
"""
self.__networkManager = NetworkManager(certificatePath)
self.__networkManager.startNetworkService()
self.__listenningPort = listenningPort
self.__packetHandler = ClusterServerPacketHandler(self.__networkManager)
self.__useSSL = useSSL
imageRepositoryPacketHandler = ImageRepositoryPacketHandler(self.__networkManager)
vmServerPacketHandler = VMServerPacketHandler(self.__networkManager)
networkEventsReactor = NetworkEventsReactor(self.__dbConnector, repositoryIP, repositoryPort)
imageRepositoryPacketReactor = ImageRepositoryPacketReactor(self.__dbConnector, self.__networkManager,
listenningPort, repositoryIP, repositoryPort,
self.__packetHandler, vmServerPacketHandler, imageRepositoryPacketHandler)
try :
imageRepositoryCallback = ImageRepositoryCallback(imageRepositoryPacketReactor, networkEventsReactor)
self.__networkManager.connectTo(repositoryIP, repositoryPort, 10, imageRepositoryCallback, self.__useSSL, True)
self.__dbConnector.addImageRepository(repositoryIP, repositoryPort, SERVER_STATE_T.READY)
except Exception as e:
print "Can't connect to the image repository: " + e.message
self.__exit = True
return
vmServerPacketReactor = VMServerPacketReactor(self.__dbConnector, self.__networkManager, listenningPort,
vmServerPacketHandler, self.__packetHandler)
self.__endpointPacketReactor = EndpointPacketReactor(self.__dbConnector, self.__networkManager,
vmServerPacketHandler, self.__packetHandler,
imageRepositoryPacketHandler,
VMServerCallback(vmServerPacketReactor, networkEventsReactor),
listenningPort, repositoryIP, repositoryPort, self.__loadBalancerSettings,
self.__averageCompressionRatio, self.__useSSL)
clusterEndpointCallback = ClusterEndpointCallback(self.__endpointPacketReactor)
self.__networkManager.listenIn(listenningPort, clusterEndpointCallback, self.__useSSL)
self.__statusMonitoringThread = ClusterStatusMonitoringThread(vmServerStatusUpdateInterval,
self.__dbConnector, self.__networkManager,
repositoryIP, repositoryPort,
vmServerPacketHandler, imageRepositoryPacketHandler)
self.__statusMonitoringThread.start()
def monitorVMBootCommands(self):
"""
Deletes the timed out virtual machine boot commands
Args:
None
Returns:
Nothing
"""
while not self.__exit and not self.__endpointPacketReactor.hasFinished():
data = self.__dbConnector.getOldVMBootCommandID(self.__timeout)
if (data == None) :
sleep(1)
else :
self.__dbConnector.deleteActiveVMLocation(data[0])
p = self.__packetHandler.createErrorPacket(CLUSTER_SERVER_PACKET_T.VM_BOOT_FAILURE, ERROR_DESC_T.CLSRVR_VM_BOOT_TIMEOUT, data[0])
self.__networkManager.sendPacket('', self.__listenningPort, p)
def closeNetworkConnections(self):
"""
Closes the control connection
Args:
None
Returns:
Nothing
"""
if (self.__statusMonitoringThread != None) :
self.__statusMonitoringThread.stop()
self.__networkManager.stopNetworkService()
print("\tquit: closes this application")
print("\thelp: prints this help message")
if __name__ == "__main__":
print('*' * 80)
print('*' * 80)
printLogo()
print('Cluster Server tester')
print('Version 7.0')
print('*' * 80)
print('*' * 80)
print()
networkManager = NetworkManager(".")
networkManager.startNetworkService()
pHandler = ClusterServerPacketHandler(networkManager)
ip_address = raw_input("Cluster server IP address: ")
port = raw_input("Cluster server control connection port: ")
try:
port = int(port)
networkManager.connectTo(ip_address, port, 10,
TesterCallback(pHandler), True)
while not networkManager.isConnectionReady(ip_address, port):
sleep(0.1)
end = False
while not end:
command = raw_input('> ')
tokens = command.split()
end = process_command(tokens, networkManager, pHandler, ip_address,
port)
class ClusterEndpointEntryPoint(object):
"""
These objects create, run and stop the cluster endpoint daemons.
"""
def __init__(self):
"""
Initializes the daemon's state
Args:
None
"""
self.__commandExecutionThread = None
self.__updateRequestThread = None
self.__codeTranslator = SpanishCodesTranslator()
self.__commandsHandler = CommandsHandler(self.__codeTranslator)
def connectToDatabases(self, mysqlRootsPassword, endpointDBName, commandsDBName, endpointdbSQLFilePath, commandsDBSQLFilePath,
websiteUser, websiteUserPassword, endpointUser, endpointUserPassword, minCommandInterval):
"""
Establishes the connection with the two databases
Args:
mysqlRootsPassword: the MySQL root's password
endpointDBName: the endpoint database's name
endpointdbSQLFilePath: the endpoint database's schema definition file path
websiteUser: the web application's username
websiteUserPassword: the web application's username
endpointUser: the endpoint daemon user's name
endpointUserPassword: the endpoint daemon user's password
"""
self.__rootsPassword = mysqlRootsPassword
self.__statusDatabaseName = endpointDBName
self.__commandsDatabaseName = commandsDBName
configurator = DBConfigurator(mysqlRootsPassword)
configurator.runSQLScript(endpointDBName, endpointdbSQLFilePath, "root", mysqlRootsPassword)
configurator.runSQLScript(commandsDBName, commandsDBSQLFilePath, "root", mysqlRootsPassword)
configurator.addUser(websiteUser, websiteUserPassword, endpointDBName, False)
configurator.addUser(endpointUser, endpointUserPassword, endpointDBName, True)
configurator.addUser(websiteUser, websiteUserPassword, commandsDBName, True)
configurator.addUser(endpointUser, endpointUserPassword, commandsDBName, True)
self.__commandsDBConnector = CommandsDatabaseConnector(endpointUser, endpointUserPassword,
commandsDBName, minCommandInterval)
self.__endpointDBConnector = ClusterEndpointDBConnector(endpointUser, endpointUserPassword, endpointDBName)
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)
def doEmergencyStop(self):
"""
Stops the endpoint daemon immediately
Args:
None
Returns:
Nothing
"""
self.__networkManager.stopNetworkService()
if (self.__updateRequestThread != None):
self.__updateRequestThread.stop()
if (self.__commandExecutionThread != None):
self.__commandExecutionThread.stop()
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 closeNetworkConnections(self):
"""
Closes the network connections
Args:
None
Returns:
Nothing
"""
self.__networkManager.stopNetworkService()
def processCommands(self):
"""
Processes the users' requests
Args:
None
Returns:
Nothing
"""
self.__commandsProcessor.processCommands()