add openvswitch support, random fixes

celeryconfig.py

+from os import getenv
+
 CELERY_TASK_RESULT_EXPIRES = 3600
-BROKER_URL = 'amqp://nyuszi:teszt@localhost:5672/django'
+BROKER_URL = getenv("AMQP_URI")

fw.py

@@ -2,6 +2,7 @@ from celery import Celery, task
 import subprocess
 import re
 import socket
+from ovs import Switch
 
 IRC_CHANNEL = '/home/cloud/irc/irc.atw.hu/#ik/in'
 DHCP_LOGFILE = '/home/cloud/dhcp.log'
@@ -11,7 +12,7 @@ celery = Celery('tasks', backend='amqp')
 celery.config_from_object('celeryconfig')
 
 
-@task(name="firewall.tasks.reload_firewall_task")
+@task(name="firewall.reload_firewall")
 def reload_firewall(data4, data6):
     print "fw"
 
@@ -27,7 +28,16 @@ def reload_firewall(data4, data6):
                         + "\n" + "\n".join(data4['nat']) + "\n")
 
 
-@task(name="firewall.tasks.reload_dhcp_task")
+@task(name="firewall.reload_firewall_vlan")
+def reload_firewall_vlan(data):
+    print "fw vlan"
+    print data
+    br = Switch('cloud')
+    br.migrate(data)
+    print br.list_ports()
+
+
+@task(name="firewall.reload_dhcp")
 def reload_dhcp(data):
     print "dhcp"
 
@@ -88,7 +98,7 @@ def irc_message(data, l_add):
 #        raise
 
 
-@task(name="firewall.tasks.reload_blacklist_task")
+@task(name="firewall.reload_blacklist")
 def reload_blacklist(data):
     print "blacklist"
 

ovs.py

+import subprocess
+from netaddr import IPNetwork
+
+# data = subprocess.check_output('sudo ovs-vsctl --format=json --data=json '
+#                                '--no-headings find Interface', shell=True)
+
+# obj = json.loads(data)
+
+# print json.dumps(obj['data'][0], indent=4)
+
+
+class IPDevice:
+    def __init__(self, devname):
+        self.devname = devname
+
+    def _run(self, *args):
+        args = ('sudo', 'ip', 'addr', ) + args
+#        print args
+        return subprocess.check_output(args)
+
+    def show(self):
+        retval = []
+        for line in self._run('show', self.devname,
+                              'scope', 'global').splitlines():
+            t = line.split()
+            if len(t) > 0 and t[0] in ('inet', 'inet6'):
+                retval.append(IPNetwork(t[1]))
+        return retval
+
+    def delete(self, address):
+        self._run('del', str(address), 'dev', self.devname)
+
+    def add(self, address):
+        self._run('add', str(address), 'dev', self.devname)
+
+    def migrate(self, new_addresses):
+        old_addresses = [str(x) for x in self.show()]
+        new_addresses = [str(x) for x in new_addresses]
+        delete = list(set(old_addresses) - set(new_addresses))
+        add = list(set(new_addresses) - set(old_addresses))
+
+        print delete, add
+
+        for i in delete:
+            self.delete(i)
+
+        for i in add:
+            self.add(i)
+
+
+class Switch:
+    def __init__(self, brname):
+        self.brname = brname
+
+    def _run(self, *args):
+        args = ('sudo', 'ovs-vsctl', ) + args
+        return subprocess.check_output(args)
+
+    def list_ports(self):
+        retval = {}
+        c_bridge = None
+        c_port = None
+        for line in self._run('show').splitlines():
+            t = line.split()
+            if t[0] == 'Bridge':
+                c_bridge = t[1]
+                retval[c_bridge] = {}
+            elif t[0] == 'Port':
+                c_port = t[1]
+                retval[c_bridge][c_port] = {}
+            elif t[0] == 'tag:':
+                retval[c_bridge][c_port]['tag'] = int(t[1])
+            elif t[0] == 'type:':
+                retval[c_bridge][c_port]['type'] = t[1]
+        return retval.get(self.brname, {})
+
+    def add_port(self, name, tag):
+        self._run('add-port', self.brname, name, 'tag=%d' % int(tag), '--',
+                  'set', 'Interface', name, 'type=internal')
+        subprocess.check_output(['sudo', 'ip', 'link', 'set', 'up', name])
+
+    def delete_port(self, name):
+        self._run('del-port', self.brname, name)
+
+    def migrate(self, new_ports):
+        old_ports = self.list_ports()
+        add = []
+        delete = []
+
+        for port, data in new_ports.items():
+            if port not in old_ports:
+                add.append(port)
+            elif (old_ports[port].get('tag', None) !=
+                    new_ports[port].get('tag', None)):
+                delete.append(port)
+                add.append(port)
+
+        delete = delete + list(set(old_ports.keys()) -
+                               set(new_ports.keys()))
+        delete.remove(self.brname)
+
+        print delete, add
+
+        for i in delete:
+            self.delete_port(i)
+        for i in add:
+            self.add_port(i, new_ports[i]['tag'])
+
+        for port, data in new_ports.items():
+            interface = IPDevice(devname=port)
+            interface.migrate([IPNetwork(x)
+                               for x in data['addresses']
+                               if x != 'None'])