Added support to hook services to IPHandler.

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

diff --git a/pymin/services/ip/__init__.py b/pymin/services/ip/__init__.py
index a6a0e676debb17b3aecb149e236181c2792daf72..1c0b64618af64d1990ed863654e9451da55c9006 100644 (file)
--- a/pymin/services/ip/__init__.py
+++ b/pymin/services/ip/__init__.py
@@ -8,7 +8,7 @@ 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',)
 
 
 __ALL__ = ('IpHandler',)
 


@@ -105,13 +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 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"


@@ -119,14 +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):
 


@@ -169,8 +154,7 @@ 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()
                             )
 


@@ -189,24 +173,63 @@ class IpHandler(Restorable, ConfigWriter, TransactionalHandler):
         self.route = RouteHandler(self)
         self.dev = DeviceHandler(self)
         self.hop = HopHandler(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():

+            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)
             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)
             call(self._render_config('ip_flush', dict(dev=device.name)), shell=True)

-            for address in device.addrs.values():
-                broadcast = address.broadcast
-                if broadcast is None:
-                    broadcast = '+'
+        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(
                 call(self._render_config('ip_add', dict(

-                        dev = device.name,
-                        addr = address.ip,
-                        netmask = address.netmask,
-                        broadcast = broadcast,
+                    dev = device.name,
+                    addr = address.ip,
+                    netmask = address.netmask,
+                    peer = address.peer,
+                    broadcast = broadcast,

                     )
                 ), shell=True)
                     )
                 ), shell=True)

-            for route in device.routes:
+            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,
                 call(self._render_config('route_add', dict(
                         dev = device.name,
                         net_addr = route.net_addr,


@@ -214,14 +237,8 @@ class IpHandler(Restorable, ConfigWriter, TransactionalHandler):
                         gateway = route.gateway,
                     )
                 ), shell=True)
                         gateway = route.gateway,
                     )
                 ), shell=True)

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

 
     def handle_timer(self):
         self.refresh_devices()
 
     def handle_timer(self):
         self.refresh_devices()


@@ -229,14 +246,41 @@ class IpHandler(Restorable, ConfigWriter, TransactionalHandler):
 
     def refresh_devices(self):
         devices = get_network_devices()
 
     def refresh_devices(self):
         devices = get_network_devices()

-        #add not registered devices
+        #add not registered and active devices
+        go_active = False

         for k,v in devices.items():
             if k not in self.devices:
         for k,v in devices.items():
             if k not in self.devices:

-                self.devices[k] = Device(k,v)
-        #delete dead devices
+                self.devices[k] = v
+            else if 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:
         for k in self.devices.keys():
             if k not in devices:

-                del self.devices[k]
+                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)
+
+