Fix so that when a device is brought back up, the routes

[software/pymin.git] / pymin / services / ip / __init__.py

diff --git a/pymin/services/ip/__init__.py b/pymin/services/ip/__init__.py
index 1f3aeefaec267790c35ee7958f2b759ccf3ef940..82a789e4a4c502f8475d7f0fb61bce88fa5f405b 100644 (file)
--- a/pymin/services/ip/__init__.py
+++ b/pymin/services/ip/__init__.py
@@ -8,13 +8,13 @@ from pymin.dispatcher import handler, HandlerError, Handler
 from pymin.services.util import Restorable, ConfigWriter, InitdHandler, \
                                 TransactionalHandler, SubHandler, call, \
                                 get_network_devices, ListComposedSubHandler, \
 from pymin.services.util import Restorable, ConfigWriter, InitdHandler, \
                                 TransactionalHandler, SubHandler, call, \
                                 get_network_devices, ListComposedSubHandler, \

-                                DictComposedSubHandler
+                                DictComposedSubHandler, Device, Address, ExecutionError

 
 __ALL__ = ('IpHandler',)
 
 # TODO: convertir HopHandler a ComposedSubHandler
 
 
 __ALL__ = ('IpHandler',)
 
 # TODO: convertir HopHandler a ComposedSubHandler
 

-class HopError(Error):
+class HopError(HandlerError):

 
     def __init__(self, hop):
         self.message = u'Hop error : "%s"' % hop
 
     def __init__(self, hop):
         self.message = u'Hop error : "%s"' % hop


@@ -105,16 +105,6 @@ class RouteHandler(ListComposedSubHandler):
     _comp_subhandler_attr = 'routes'
     _comp_subhandler_class = Route
 
     _comp_subhandler_attr = 'routes'
     _comp_subhandler_class = Route
 

-class Address(Sequence):
-    def __init__(self, ip, netmask, broadcast=None):
-        self.ip = ip
-        self.netmask = netmask
-        self.broadcast = broadcast
-    def update(self, netmask=None, broadcast=None):
-        if netmask is not None: self.netmask = netmask
-        if broadcast is not None: self.broadcast = broadcast
-    def as_tuple(self):
-        return (self.ip, self.netmask, self.broadcast)

 
 class AddressHandler(DictComposedSubHandler):
     handler_help = u"Manage IP addresses"
 
 class AddressHandler(DictComposedSubHandler):
     handler_help = u"Manage IP addresses"


@@ -122,14 +112,6 @@ class AddressHandler(DictComposedSubHandler):
     _comp_subhandler_attr = 'addrs'
     _comp_subhandler_class = Address
 
     _comp_subhandler_attr = 'addrs'
     _comp_subhandler_class = Address
 

-class Device(Sequence):
-    def __init__(self, name, mac):
-        self.name = name
-        self.mac = mac
-        self.addrs = dict()
-        self.routes = list()
-    def as_tuple(self):
-        return (self.name, self.mac)

 
 class DeviceHandler(SubHandler):
 
 
 class DeviceHandler(SubHandler):
 


@@ -147,6 +129,18 @@ class DeviceHandler(SubHandler):
     def up(self, name):
         if name in self.parent.devices:
             call(self.device_template.render(dev=name, action='up'), shell=True)
     def up(self, name):
         if name in self.parent.devices:
             call(self.device_template.render(dev=name, action='up'), shell=True)

+            #bring up all the route asocitaed to the device
+            for route in self.parent.devices[name].routes:
+                try:
+                    call(self.parent._render_config('route_add', dict(
+                            dev = name,
+                            net_addr = route.net_addr,
+                            prefix = route.prefix,
+                            gateway = route.gateway,
+                        )
+                    ), shell=True)
+                except ExecutionError, e:
+                    print e

         else:
             raise DeviceNotFoundError(name)
 
         else:
             raise DeviceNotFoundError(name)
 


@@ -172,8 +166,7 @@ class IpHandler(Restorable, ConfigWriter, TransactionalHandler):
     _persistent_attrs = ('devices','hops')
 
     _restorable_defaults = dict(
     _persistent_attrs = ('devices','hops')
 
     _restorable_defaults = dict(

-                            devices=dict((dev, Device(dev, mac))
-                                for (dev, mac) in get_network_devices().items()),
+                            devices=get_network_devices(),

                             hops = list()
                             )
 
                             hops = list()
                             )
 


@@ -187,62 +180,125 @@ class IpHandler(Restorable, ConfigWriter, TransactionalHandler):
         self._config_writer_cfg_dir = config_dir
         self._config_build_templates()
         self._restore()
         self._config_writer_cfg_dir = config_dir
         self._config_build_templates()
         self._restore()

+        self._write_config()

         self.addr = AddressHandler(self)
         self.route = RouteHandler(self)
         self.dev = DeviceHandler(self)
         self.hop = HopHandler(self)
         self.addr = AddressHandler(self)
         self.route = RouteHandler(self)
         self.dev = DeviceHandler(self)
         self.hop = HopHandler(self)

+        self.services = list()

 
     def _write_config(self):
         r"_write_config() -> None :: Execute all commands."
         for device in self.devices.values():
 
     def _write_config(self):
         r"_write_config() -> None :: Execute all commands."
         for device in self.devices.values():

-            #call(self._render_config('route_flush', dict(dev=device.name)), shell=True)
-            print self._render_config('route_flush', dict(dev=device.name))
-            #call(self._render_config('ip_flush', dict(dev=device.name)), shell=True)
-            print self._render_config('ip_flush', dict(dev=device.name))
-            for address in device.addrs.values():
-                print self._render_config('ip_add', dict(
-                        dev = device.name,
-                        addr = address.ip,
-                        netmask = address.netmask,
-                        broadcast = address.broadcast,
-                    ))
-                #call(self._render_config('ip_add', dict(
-                        #dev = device.name,
-                        #addr = address.ip,
-                        #prefix = address.prefix,
-                        #broadcast = address.broadcast,
-                    #)
-                #), shell=True)
-            for route in device.routes:
-                print self._render_config('route_add', dict(
+            if device.active:
+                self._write_config_for_device(device)
+        self._write_hops()
+
+    def _write_hops(self):
+        r"_write_hops() -> None :: Execute all hops."
+        if self.hops:
+            try:
+                call('ip route del default', shell=True)
+            except ExecutionError, e:
+                print e
+            try:
+                #get hops for active devices
+                active_hops = dict()
+                for h in self.hops:
+                    if h.device in self.devices:
+                        if self.devices[h.device].active:
+                            active_hops.append(h)
+                call(self._render_config('hop', dict(
+                    hops = active_hops,
+                        )
+                ), shell=True)
+            except ExecutionError, e:
+                print e
+
+    def _write_config_for_device(self, device):
+        r"_write_config_for_device(self, device) -> None :: Execute all commands for a device."
+        try:
+            call(self._render_config('route_flush', dict(dev=device.name)), shell=True)
+        except ExecutionError, e:
+            print e
+        try:
+            call(self._render_config('ip_flush', dict(dev=device.name)), shell=True)
+        except ExecutionError, e:
+            print e
+        for address in device.addrs.values():
+            broadcast = address.broadcast
+            if broadcast is None:
+                broadcast = '+'
+            try:
+                call(self._render_config('ip_add', dict(
+                    dev = device.name,
+                    addr = address.ip,
+                    netmask = address.netmask,
+                    peer = address.peer,
+                    broadcast = broadcast,
+                    )
+                ), shell=True)
+            except ExecutionError, e:
+                print e
+        for route in device.routes:
+            try:
+                call(self._render_config('route_add', dict(

                         dev = device.name,
                         net_addr = route.net_addr,
                         prefix = route.prefix,
                         gateway = route.gateway,
                         dev = device.name,
                         net_addr = route.net_addr,
                         prefix = route.prefix,
                         gateway = route.gateway,

-                    ))
-                #call(self._render_config('route_add', dict(
-                        #dev = device.name,
-                        #net_addr = route.net_addr,
-                        #prefix = route.prefix,
-                        #gateway = route.gateway,
-                    #)
-                #), shell=True)
+                    )
+                ), shell=True)
+            except ExecutionError, e:
+                print e
+
+    def handle_timer(self):
+        self.refresh_devices()
+
+
+    def refresh_devices(self):
+        devices = get_network_devices()
+        #add not registered and active devices
+        go_active = False
+        for k,v in devices.items():
+            if k not in self.devices:
+                self.devices[k] = v
+            elif not self.devices[k].active:
+                self.active = True
+                go_active = True
+                self._write_config_for_device(self.devices[k])
+        if go_active:
+            self._write_hops()
+            for s in services:
+                if s._running:
+                    try:
+                        s.stop()
+                    except ExecutionError:
+                        pass
+                    try:
+                        s.start()
+                    except ExecutionError:
+                        pass
+
+        #mark inactive devices
+        for k in self.devices.keys():
+            if k not in devices:
+                self.devices[k].active = False
+
+       #hooks a service to the ip handler, so when
+       #a device is brought up one can restart the service
+       #that need to refresh their device list
+       def device_up_hook(self, serv):
+               if hasattr(serv, 'stop') and hasattr(serv, 'start'):
+                       services.append(serv)
+
+

 
 

-        if self.hops:
-            print 'ip route del default'
-            #call('ip route del default', shell=True)
-            print self._render_config('hop', dict(
-                        hops = self.hops,
-                    ))
-            #call(self._render_config('hop', dict(
-                        #hops = self.hops,
-                    #)
-                 #), shell=True)

 
 
 if __name__ == '__main__':
 
 
 
 if __name__ == '__main__':
 

-    ip = IpHandler()
+    ip = IpHanlder()

     print '----------------------'
     ip.hop.add('201.21.32.53','eth0')
     ip.hop.add('205.65.65.25','eth1')
     print '----------------------'
     ip.hop.add('201.21.32.53','eth0')
     ip.hop.add('205.65.65.25','eth1')