def __init__(self, host, port):
self.FILENAME_MY_CONFIG = 'Coordinator_cfg.py'
CommonHandler.__init__(self, host, port)
self.dispatch_handlers.update({
'RackAlgorithmResourceInformationReq':
self.RackAlgorithmResourceInformation,
'ClusterDatabaseSubsystemCreateVMres':
self.ClusterDatabaseSubsystemCreateVM,
'NodeDatabaseSubsystemAddPortReq':
self.NodeDatabaseSubsystemAddPort,
})
self.startup_functions.extend((
#self.databaseSubsystem,
self.CreateVmByCheckingDatabase,
self.CheckPortmappingRequest,
self.sayHello, # hello function
))
# database imformation, use config to replace this part
# TODO replace all db connection with self.db
try:
self.db = mdb.connect(self.config['host'], self.config['db_user'],
self.config['db_password'],
self.config['db_name'])
except:
logger.error('connect to db failed')
self.db = None
self.host = self.config['host']
self.db_account = self.config['db_account']
self.db_password = self.config['db_password']
self.db_name = self.config['db_name']
self.cmd_iptables = self.config['cmd_iptables']
def __init__(self, host, port):
self.FILENAME_MY_CONFIG = 'Coordinator_cfg.py'
CommonHandler.__init__(self, host, port)
self.dispatch_handlers.update({
'RackAlgorithmResourceInformationReq': self.RackAlgorithmResourceInformation,
'ClusterDatabaseSubsystemCreateVMres': self.ClusterDatabaseSubsystemCreateVM,
'NodeDatabaseSubsystemAddPortReq': self.NodeDatabaseSubsystemAddPort,
})
self.startup_functions.extend((
#self.databaseSubsystem,
self.CreateVmByCheckingDatabase,
self.CheckPortmappingRequest,
self.sayHello, # hello function
))
# database imformation, use config to replace this part
# TODO replace all db connection with self.db
try:
self.db = mdb.connect(self.config['host'], self.config['db_user'], self.config['db_password'], self.config['db_name'])
except:
logger.error('connect to db failed')
self.db = None
self.host = self.config['host']
self.db_account = self.config['db_account']
self.db_password = self.config['db_password']
self.db_name = self.config['db_name']
self.cmd_iptables = self.config['cmd_iptables']
def run(self):
logger.info('network layer listener begin to work...')
while True:
ospf_pkg = self.network_layer.recv_ospf()
ordinary_pkg = self.network_layer.recv()
if ospf_pkg is None and ordinary_pkg is None:
time.sleep(0.01)
continue
if ospf_pkg:
src_ip = ospf_pkg.dest_ip
dest_ip = ospf_pkg.src_ip
netmask = ospf_pkg.net_mask
if ospf_pkg.protocol != 119:
logger.error(
'error! get ospf pkg, protocol is %d instead of 119',
ospf_pkg.protocol)
ospf_msg = utilities.objDecode(ospf_pkg.data)
logger.info("get ospf msg\n%s", ospf_msg)
if ospf_msg['code'] == 0:
if not is_controller:
logger.warn(
"IM NOT CONTROLLER. get request msg. ignore.")
continue
src_index = ospf_msg['src_index']
init_global_route_table(GLOBAL_ROUTE_INFORMATIOIN_FILE,
src_index)
sp = calculate_shortest_path(src_index)
response_msg = {
"code": 1,
"msg": "here's your route table",
"route_table": sp
}
response_msg_bytes = utilities.objEncode(response_msg)
pkg = route.IP_Package(src_ip, dest_ip, dest_ip, netmask,
response_msg_bytes)
pkg.protocol = 119
errno = route.link_layer.send(pkg.to_bytes())
if errno < 0:
logger.warning(
'fail to send to link layer. errno is %d\n', errno)
elif ospf_msg['code'] == 1:
logger.info('get route table response msg\n%s', ospf_msg)
route_table = ospf_msg['route_table']
for dest_net, netmask, dest_ip in route_table:
route.my_route_table.update_item(
dest_net, netmask, dest_ip)
if ordinary_pkg:
#TODO: refine here
logger.info("get odinary msg\n%s", ordinary_pkg)
def portmapping(self, vmname, vmip, vmport, hostport, action):
if action == 'a':
iptables_cmd = '%s %s PREROUTING -p tcp --dport %s -j DNAT --to %s:%s' \
%(self.cmd_iptables, '-A', hostport, vmip, vmport)
logger.info(
'Add port mapping for %s, from %s to %s on hostmachine' %
(vmname, vmport, hostport))
logger.debug(iptables_cmd)
elif action == 'd':
iptables_cmd = '%s %s PREROUTING -p tcp --dport %s -j DNAT --to %s:%s' \
%(self.cmd_iptables, '-D', hostport, vmip, vmport)
logger.info(
'Delete port mapping for %s, from %s to %s on hostmachine' %
(vmname, vmport, hostport))
logger.debug(iptables_cmd)
else:
logger.error('Error argument!')
return 0
(result, value) = pexpect.run(iptables_cmd, withexitstatus=1)
if value != 0:
logger.error(result)
return 0
return 1
if connect:
logger.info('Start.')
logger.info('Database connected.')
while 1:
query_portreq = "SELECT * FROM %s WHERE state='adding' \
OR state='deleting 'ORDER BY hostport" % (porttb)
db.query(query_portreq)
req_res = db.store_result()
fetched_req_data = req_res.fetch_row()
while fetched_req_data:
state = fetched_req_data[0][idx_state]
vmname = fetched_req_data[0][idx_vmname]
vmport = fetched_req_data[0][idx_vmport]
oldhostport = fetched_req_data[0][idx_hostport]
if (state == 'adding'):
vmip = socket.gethostbyname(vmname)
newport = oldhostport
if (newport == '-1'):
newport = get_port()
if (newport != -1):
portmapping(vmname, vmip, vmport, newport, 'a')
query = "UPDATE %s SET state='using', \
hostport='%s', ip='%s' \
WHERE hostport=%s" % (porttb, newport, vmip,
oldhostport)
db.query(query)
else:
logger.error('No more port!')
elif (fetched_req_data[0][idx_state] == 'deleting'):
#delete port
vmip = fetched_req_data[0][idx_ip]
portmapping(vmname, vmip, vmport, oldhostport, 'd')
query = "DELETE FROM %s WHERE hostport=%s" % (
porttb, oldhostport)
db.query(query)
else:
logger.error("I don't know what's wrong!")
fetched_req_data = req_res.fetch_row()
time.sleep(sleep_time)
def portmapping(self, vmname, vmip, vmport, hostport, action):
if action == 'a':
iptables_cmd = '%s %s PREROUTING -p tcp --dport %s -j DNAT --to %s:%s' \
%(self.cmd_iptables, '-A', hostport, vmip, vmport)
logger.info('Add port mapping for %s, from %s to %s on hostmachine'%(vmname, vmport, hostport))
logger.debug(iptables_cmd)
elif action == 'd':
iptables_cmd = '%s %s PREROUTING -p tcp --dport %s -j DNAT --to %s:%s' \
%(self.cmd_iptables, '-D', hostport, vmip, vmport)
logger.info('Delete port mapping for %s, from %s to %s on hostmachine'%(vmname, vmport, hostport))
logger.debug(iptables_cmd)
else :
logger.error('Error argument!')
return 0
(result, value) = pexpect.run(iptables_cmd, withexitstatus = 1)
if value != 0 :
logger.error(result)
return 0
return 1
if connect:
logger.info('Start.')
logger.info('Database connected.')
while 1:
query_portreq = "SELECT * FROM %s WHERE state='adding' \
OR state='deleting 'ORDER BY hostport"%(porttb)
db.query(query_portreq)
req_res = db.store_result()
fetched_req_data = req_res.fetch_row()
while fetched_req_data:
state = fetched_req_data[0][idx_state]
vmname = fetched_req_data[0][idx_vmname]
vmport = fetched_req_data[0][idx_vmport]
oldhostport = fetched_req_data[0][idx_hostport]
if (state == 'adding') :
vmip = socket.gethostbyname(vmname)
newport = oldhostport
if (newport == '-1') :
newport = get_port()
if (newport != -1) :
portmapping(vmname, vmip, vmport, newport, 'a')
query = "UPDATE %s SET state='using', \
hostport='%s', ip='%s' \
WHERE hostport=%s"%(porttb, newport, vmip, oldhostport)
db.query(query)
else :
logger.error('No more port!')
elif (fetched_req_data[0][idx_state] == 'deleting') :
#delete port
vmip = fetched_req_data[0][idx_ip]
portmapping(vmname, vmip, vmport, oldhostport, 'd')
query = "DELETE FROM %s WHERE hostport=%s"%(porttb, oldhostport)
db.query(query)
else :
logger.error("I don't know what's wrong!")
fetched_req_data = req_res.fetch_row()
time.sleep(sleep_time)
