class Role(AbstractRole):
def __init__(self, main_instance):
AbstractRole.__init__(self, main_instance)
self.virt_co = libvirt.open(Config.libvirt_uri)
self.has_run = False
self.queue = Queue.Queue()
self.pool = Pool(Config.ulteo_pool_name,self.virt_co)
self.virtual_machine = {}
self.network = Network(Config.network_name, self.virt_co)
self.webserver = None
"""
Check if the storage pool exist, if not create it, if yes, reload it
Check if the virtual machine network exist, if not create it
Reload virtual machine in the list of VM
Init the HTTP server use for communication between hypervisor and virtuals machines
"""
def init(self):
if not self.pool.exist():
self.pool.create(Config.ulteo_pool_path)
else:
self.pool.reload()
if not self.network.exist():
self.network.create()
self.reload_vm()
self.webserver = HttpServer2((Config.lan, Config.port), self)
return True
@staticmethod
def getName():
return "Hypervisor"
"""
When role is stopped, all running virtuals machines are stopped
and the http server is closed
"""
def force_stop(self):
AbstractRole.force_stop(self)
for vm in self.virtual_machine :
vm = self.virtual_machine[vm]
if vm.getStatus() == "RUNNING" :
vm.shutdown()
self.webserver.server_close()
def finalize(self):
Logger.info("Hypervisor:: stopping")
def run(self):
self.has_run = True
self.status = Role.STATUS_RUNNING
self.webserver.serve_forever()
while self.loop:
if self.status == Role.STATUS_STOPPING:
break
try:
(request, obj) = self.queue.get(True, 4)
except Queue.Empty, err:
continue
# This error is ue to the sigterm sended by the init script
except TypeError:
return
except (EOFError, socket.error):
return
