def __init__(self):
self._config={
"bridge_name":DEFAULT_BRIDGE_NAME,
"netns":CONTRAIL_NETNS
}
cfg_file=WEB_PROXY_CONFIG_FILE
if (not os.path.exists(cfg_file)
or not os.path.isfile(cfg_file)):
print "config file %s not exist."%(cfg_file)
sys.exit(1)
self._parse_config(cfg_file)
phy_if=self._config.get('physical_interface',None)
if not phy_if or phy_if=="":
print "physical_interface config error in %s"%(cfg_file)
sys.exit(1)
if not Net.intf_exist(phy_if):
print "physical interface %s not exist"%(phy_if)
sys.exit(1)
proxy_public_address=self._config.get('proxy_public_address',None)
if (not proxy_public_address
or proxy_public_address == "127.0.0.1"
or proxy_public_address == "0.0.0.0"):
print "invalid proxy_public_address in config file %s"%(cfg_file)
sys.exit(1)
physical_address=self._config.get('physical_interface_address',None)
if (not physical_address
or physical_address=="127.0.0.1"
or physical_address=="0.0.0.0"):
print "invalid physical address %s"%(physical_address)
sys.exit(1)
self._veth=ContrailVethPort()
class WebProxyWrapper(object):
def __init__(self):
self._config={
"bridge_name":DEFAULT_BRIDGE_NAME,
"netns":CONTRAIL_NETNS
}
cfg_file=WEB_PROXY_CONFIG_FILE
if (not os.path.exists(cfg_file)
or not os.path.isfile(cfg_file)):
print "config file %s not exist."%(cfg_file)
sys.exit(1)
self._parse_config(cfg_file)
phy_if=self._config.get('physical_interface',None)
if not phy_if or phy_if=="":
print "physical_interface config error in %s"%(cfg_file)
sys.exit(1)
if not Net.intf_exist(phy_if):
print "physical interface %s not exist"%(phy_if)
sys.exit(1)
proxy_public_address=self._config.get('proxy_public_address',None)
if (not proxy_public_address
or proxy_public_address == "127.0.0.1"
or proxy_public_address == "0.0.0.0"):
print "invalid proxy_public_address in config file %s"%(cfg_file)
sys.exit(1)
physical_address=self._config.get('physical_interface_address',None)
if (not physical_address
or physical_address=="127.0.0.1"
or physical_address=="0.0.0.0"):
print "invalid physical address %s"%(physical_address)
sys.exit(1)
self._veth=ContrailVethPort()
def _parse_config(self,cfg_file):
parser=ConfigParser.ConfigParser()
parser.read(cfg_file)
sec='default'
if parser.has_section(sec):
self._config.update(dict(parser.items(sec)))
sec='contrail'
item='netns'
if parser.has_section(sec):
self._config[item]=parser.get(sec,item)
sec='proxy'
item='proxy_public_address'
if parser.has_section(sec):
self._config[item]=parser.get(sec,item)
def _add_bridge(self):
br=self._config['bridge_name']
cmd="brctl addbr "+br
os.system(cmd)
cmd="brctl addif %s %s"%(br,self._config['physical_interface'])
os.system(cmd)
cmd="brctl addif %s vewebproxyout"%(br)
os.system(cmd)
def _add_veth(self):
cmd="ip link add vewebproxyout type veth peer name vewebproxyin"
os.system(cmd)
def _intf_up(self):
cmd="ifconfig vewebproxyout up"
os.system(cmd)
cmd="ifconfig %s up"%(self._config['physical_interface'])
os.system(cmd)
cmd="ifconfig %s up"%(self._config['bridge_name'])
os.system(cmd)
netns=self._config['netns']
cmd="ip netns exec %s ifconfig vewebproxyin up"%(netns)
os.system(cmd)
cmd="ip netns exec %s ifconfig lo up"%(netns)
os.system(cmd)
def _assign_address(self):
cmd="ifconfig %s 0.0.0.0"%(self._config['physical_interface'])
os.system(cmd)
cmd="ifconfig %s %s netmask %s up"%(self._config['bridge_name'],
self._config['physical_interface_address'],
self._config['physical_interface_netmask'])
os.system(cmd)
cmd="ip netns exec %s ifconfig vewebproxyin %s/16 up"%(self._config['netns'],
self._config['proxy_public_address'])
os.system(cmd)
def _netns_proc(self):
netns=self._config['netns']
cmd="ip link set vewebproxyin netns "+netns
os.system(cmd)
def _contrail_veth_port_run(self):
while True:
try:
self._veth.main()
break
except Exception as e:
print e
time.sleep(1)
continue
def _nginx_restart(self):
cmd="service nginx stop"
os.system(cmd)
cmd="ip netns exec %s service nginx start"%(self._config['netns'])
os.system(cmd)
def run(self):
self._contrail_veth_port_run()
self._add_veth()
self._netns_proc()
self._add_bridge()
self._assign_address()
self._intf_up()
self._nginx_restart()
os.execv('/sbin/ip',['ip','netns','exec',self._config['netns'],'/usr/bin/web-proxy'])
