# -*- coding: UTF8 -*-
from utils1.enums import enum
from database.utils.connector import BasicDatabaseConnector
SERVER_STATE_T = enum("BOOTING", "READY", "SHUT_DOWN")
class MainServerDatabaseConnector(BasicDatabaseConnector):
"""
Nota: esta clase es ServerVMManager, con los métodos específicos
de ImagesInServerManager.
"""
'''
These objects register and delete virtual machine servers to the database.
'''
def __init__(self, sqlUser, sqlPassword, databaseName):
'''
Constructor de la clase. Recibe el nombre y lla contrasennia del usuario sql encargado
de gestionar la base de datos
Argumentos:
sqlUser: usuario para conectarnos a MySQL
sqlPassword: contraseña para conectarnos a MySQL
databaseName: nombre de la base de datos a la que nos vamos a conectar
Devuelve:
Nada
'''
BasicDatabaseConnector.__init__(self, sqlUser, sqlPassword, databaseName)
#===========================================================================
# No aparecen aquí:
# -*- coding: utf8 -*-
'''
Main server packet handler definitions.
@author: Luis Barrios Hernández
@version: 1.0
'''
from utils1.enums import enum
from database.mainServer.mainServerDB import SERVER_STATE_T
MAIN_SERVER_PACKET_T = enum("REGISTER_VM_SERVER", "VM_SERVER_REGISTRATION_ERROR", "QUERY_VM_SERVERS_STATUS",
"VM_SERVERS_STATUS_DATA", "UNREGISTER_OR_SHUTDOWN_VM_SERVER", "BOOTUP_VM_SERVER",
"VM_SERVER_BOOTUP_ERROR", "QUERY_AVAILABLE_IMAGES", "AVAILABLE_IMAGES_DATA", "VM_BOOT_REQUEST",
"VM_CONNECTION_DATA", "VM_BOOT_FAILURE")
class MainServerPacketHandler(object):
def __init__(self, networkManager):
self.__packetCreator = networkManager
# TODO: paquetes de arranque
def createVMServerRegistrationPacket(self, IPAddress, port, name):
p = self.__packetCreator.createPacket(3)
p.writeInt(MAIN_SERVER_PACKET_T.REGISTER_VM_SERVER)
p.writeString(IPAddress)
p.writeInt(port)
p.writeString(name)
return p
def createVMRegistrationErrorPacket(self, IPAddress, port, name, reason):
# -*- coding: utf8 -*-
'''
Network connection definitions
@author: Luis Barrios Hernández
@version: 5.0
'''
from utils1.enums import enum
from threading import BoundedSemaphore
from utils1.multithreadingCounter import MultithreadingCounter
# Connection status enum type
CONNECTION_STATUS = enum("OPENING", "READY_WAIT", "READY", "CLOSING", "CLOSED",
"ERROR")
class _ConnectionStatus(object):
"""
A class that stores a connection's status and allows its modification
in a thread-safe manner.
"""
def __init__(self, status):
"""
Initializes the status using its argument.
"""
self.__status = status
self.__semaphore = BoundedSemaphore(1)
def get(self):
"""
Returns the status value
# -*- coding: UTF8 -*-
from utils1.enums import enum
from database.utils.connector import BasicDatabaseConnector
SERVER_STATE_T = enum("BOOTING", "READY", "SHUT_DOWN")
class MainServerDatabaseConnector(BasicDatabaseConnector):
"""
Nota: esta clase es ServerVMManager, con los métodos específicos
de ImagesInServerManager.
"""
'''
These objects register and delete virtual machine servers to the database.
'''
def __init__(self, sqlUser, sqlPassword, databaseName):
'''
Constructor de la clase. Recibe el nombre y lla contrasennia del usuario sql encargado
de gestionar la base de datos
Argumentos:
sqlUser: usuario para conectarnos a MySQL
sqlPassword: contraseña para conectarnos a MySQL
databaseName: nombre de la base de datos a la que nos vamos a conectar
Devuelve:
Nada
'''
BasicDatabaseConnector.__init__(self, sqlUser, sqlPassword,
databaseName)
#===========================================================================
# -*- coding: utf8 -*-
'''
Main server packet handler definitions.
@author: Luis Barrios Hernández
@version: 1.0
'''
from utils1.enums import enum
from database.mainServer.mainServerDB import SERVER_STATE_T
MAIN_SERVER_PACKET_T = enum(
"REGISTER_VM_SERVER", "VM_SERVER_REGISTRATION_ERROR",
"QUERY_VM_SERVERS_STATUS", "VM_SERVERS_STATUS_DATA",
"UNREGISTER_OR_SHUTDOWN_VM_SERVER", "BOOTUP_VM_SERVER",
"VM_SERVER_BOOTUP_ERROR", "QUERY_AVAILABLE_IMAGES",
"AVAILABLE_IMAGES_DATA", "VM_BOOT_REQUEST", "VM_CONNECTION_DATA",
"VM_BOOT_FAILURE")
class MainServerPacketHandler(object):
def __init__(self, networkManager):
self.__packetCreator = networkManager
# TODO: paquetes de arranque
def createVMServerRegistrationPacket(self, IPAddress, port, name):
p = self.__packetCreator.createPacket(3)
p.writeInt(MAIN_SERVER_PACKET_T.REGISTER_VM_SERVER)
p.writeString(IPAddress)
p.writeInt(port)
p.writeString(name)
# -*- coding: utf8 -*-
"""
_Packet-related definitions
@author: Luis Barrios Hernández
@version: 1.6
"""
from utils1.enums import enum
from network.exceptions.packetException import PacketException
Packet_TYPE = enum('TICK', 'TOCK', 'DATA')
class _Packet(object):
"""
A class that stands for a packet
@attention: _Packet instances MUST ONLY be created through a NetworkManager
to avoid priority issues that can cause serious errors in the network
subsystem.
@attention: The single underscore methods are semi-private, and MUST NOT
be used along the user's code.
@attention: All the read operations are destructive.
"""
def __init__(self, packetType=Packet_TYPE.DATA, priority=10):
"""
Creates an empty packet with the type and priority given as arguments
Args:
packetType: The new packet's type
priority: The new packet's priority
"""
self.__priority = priority
# -*- coding: utf8 -*-
'''
Network connection definitions
@author: Luis Barrios Hernández
@version: 5.0
'''
from utils1.enums import enum
from threading import BoundedSemaphore
from utils1.multithreadingCounter import MultithreadingCounter
# Connection status enum type
CONNECTION_STATUS = enum("OPENING", "READY_WAIT", "READY", "CLOSING", "CLOSED", "ERROR")
class _ConnectionStatus(object):
"""
A class that stores a connection's status and allows its modification
in a thread-safe manner.
"""
def __init__(self, status):
"""
Initializes the status using its argument.
"""
self.__status = status
self.__semaphore = BoundedSemaphore(1)
def get(self):
"""
Returns the status value
"""
return self.__status
def set(self, value):
# -*- coding: utf8 -*-
"""
_Packet-related definitions
@author: Luis Barrios Hernández
@version: 1.6
"""
from utils1.enums import enum
from network.exceptions.packetException import PacketException
Packet_TYPE = enum('TICK', 'TOCK', 'DATA')
class _Packet(object):
"""
A class that stands for a packet
@attention: _Packet instances MUST ONLY be created through a NetworkManager
to avoid priority issues that can cause serious errors in the network
subsystem.
@attention: The single underscore methods are semi-private, and MUST NOT
be used along the user's code.
@attention: All the read operations are destructive.
"""
def __init__(self, packetType=Packet_TYPE.DATA, priority= 10):
"""
Creates an empty packet with the type and priority given as arguments
Args:
packetType: The new packet's type
priority: The new packet's priority
"""
self.__priority = priority
self.__packetType = packetType
