X-Git-Url: https://git.llucax.com/software/pymin.git/blobdiff_plain/7006c209ece1e718f7eba4094e9670e1b1391fe7..5d2a72486a8ef72659df813e1c0feed41da3a667:/pymin/services/ip/__init__.py?ds=sidebyside diff --git a/pymin/services/ip/__init__.py b/pymin/services/ip/__init__.py index 965e812..86551f4 100644 --- a/pymin/services/ip/__init__.py +++ b/pymin/services/ip/__init__.py @@ -2,32 +2,17 @@ from subprocess import Popen, PIPE from os import path +import logging ; log = logging.getLogger('pymin.services.ip') from pymin.seqtools import Sequence from pymin.dispatcher import handler, HandlerError, Handler from pymin.services.util import Restorable, ConfigWriter, InitdHandler, \ TransactionalHandler, SubHandler, call, \ get_network_devices, ListComposedSubHandler, \ - DictComposedSubHandler, Device, Address, ExecutionError + DictComposedSubHandler, ListSubHandler, \ + Device, Address, ExecutionError -__ALL__ = ('IpHandler',) - -# TODO: convertir HopHandler a ComposedSubHandler - -class HopError(HandlerError): - - def __init__(self, hop): - self.message = u'Hop error : "%s"' % hop - -class HopNotFoundError(HopError): - - def __init__(self, hop): - self.message = u'Hop not found : "%s"' % hop - -class HopAlreadyExistsError(HopError): - - def __init__(self, hop): - self.message = u'Hop already exists : "%s"' % hop +__all__ = ('IpHandler',) class Hop(Sequence): @@ -45,66 +30,68 @@ class Hop(Sequence): return 0 return cmp(id(self), id(other)) -class HopHandler(Handler): - - def __init__(self, parent): - self.parent = parent +class HopHandler(ListSubHandler): + handler_help = u"Manage IP hops" + _cont_subhandler_attr = 'hops' + _cont_subhandler_class = Hop - @handler('Adds a hop : add ') - def add(self, gw, dev): + @handler('Add a hop: add ') + def add(self, dev, gw): if not dev in self.parent.devices: raise DeviceNotFoundError(device) - h = Hop(gw, dev) - try: - self.parent.hops.index(h) - raise HopAlreadyExistsError(gw + '->' + dev) - except ValueError: - self.parent.hops.append(h) + return ListSubHandler.add(self, dev, gw) - @handler(u'Deletes a hop : delete ') - def delete(self, gw, dev): - if not dev in self.parent.devices: - raise DeviceNotFoundError(device) - h = Hop(gw, dev) - try: - self.parent.hops.remove(h) - except ValueError: - raise HopNotFoundError(gw + '->' + dev) - - @handler(u'Lists hops : list ') - def list(self, device): - try: - k = self.parent.hops.keys() - except ValueError: - k = list() - return k - - @handler(u'Get information about all hops: show ') - def show(self, device): - try: - k = self.parent.hops.values() - except ValueError: - k = list() - return k class Route(Sequence): def __init__(self, net_addr, prefix, gateway): self.net_addr = net_addr self.prefix = prefix self.gateway = gateway + def update(self, net_addr=None, prefix=None, gateway=None): if net_addr is not None: self.net_addr = net_addr if prefix is not None: self.prefix = prefix if gateway is not None: self.gateway = gateway + def as_tuple(self): return(self.net_addr, self.prefix, self.gateway) + def __cmp__(self, other): + if self.net_addr == other.net_addr \ + and self.prefix == other.prefix \ + and self.gateway == other.gateway: + return 0 + return cmp(id(self), id(other)) + class RouteHandler(ListComposedSubHandler): handler_help = u"Manage IP routes" _comp_subhandler_cont = 'devices' _comp_subhandler_attr = 'routes' _comp_subhandler_class = Route + @handler(u'Adds a route to : ip route add [device]') + def add(self, net_addr, prefix, gateway, dev=None): + if dev is not None: + ListComposedSubHandler.add(self, dev, net_addr, prefix, gateway) + else: + r = Route(net_addr, prefix, gateway) + if not r in self.parent.no_device_routes: + self.parent.no_device_routes.append(r) + + @handler("Deletes a route : ip route delete [dev]") + def delete(self, index, dev=None): + if dev is not None: + ListComposedSubHandler.delete(self, dev, index) + else: + i = int(index) + del self.parent.no_device_routes[i] + + @handler("Shows routes : ip route show [dev]") + def show(self, dev=None): + if dev is not None: + return ListComposedSubHandler.show(self, dev) + else: + return self.parent.no_device_routes class AddressHandler(DictComposedSubHandler): handler_help = u"Manage IP addresses" @@ -118,6 +105,7 @@ class DeviceHandler(SubHandler): handler_help = u"Manage network devices" def __init__(self, parent): + log.debug(u'DeviceHandler(%r)', parent) # FIXME remove templates to execute commands from mako.template import Template self.parent = parent @@ -127,35 +115,59 @@ class DeviceHandler(SubHandler): @handler(u'Bring the device up') def up(self, name): + log.debug(u'DeviceHandler.up(%r)', 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: + log.debug(u'IpHandler.up: adding %r', route) + 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: + log.debug(u'IpHandler.up: error adding %r -> %r', route, e) + self.parent._bring_up_no_dev_routes() + self.parent._restart_services() else: + log.debug(u'DeviceHandler.up: device not found') raise DeviceNotFoundError(name) @handler(u'Bring the device down') def down(self, name): + log.debug(u'DeviceHandler.down(%r)', name) if name in self.parent.devices: call(self.device_template.render(dev=name, action='down'), shell=True) + self.parent._bring_up_no_dev_routes() + self.parent._restart_services() else: + log.debug(u'DeviceHandler.up: device not found') raise DeviceNotFoundError(name) @handler(u'List all devices') def list(self): + log.debug(u'DeviceHandler.list()') return self.parent.devices.keys() @handler(u'Get information about a device') def show(self): + log.debug(u'DeviceHandler.show()') return self.parent.devices.items() class IpHandler(Restorable, ConfigWriter, TransactionalHandler): handler_help = u"Manage IP devices, addresses, routes and hops" - _persistent_attrs = ('devices','hops') + _persistent_attrs = ('devices','hops','no_device_routes') _restorable_defaults = dict( devices=get_network_devices(), - hops = list() + hops = list(), + no_device_routes = list(), ) _config_writer_files = ('device', 'ip_add', 'ip_del', 'ip_flush', @@ -164,6 +176,7 @@ class IpHandler(Restorable, ConfigWriter, TransactionalHandler): def __init__(self, pickle_dir='.', config_dir='.'): r"Initialize DhcpHandler object, see class documentation for details." + log.debug(u'IpHandler(%r, %r)', pickle_dir, config_dir) self._persistent_dir = pickle_dir self._config_writer_cfg_dir = config_dir self._config_build_templates() @@ -173,50 +186,83 @@ class IpHandler(Restorable, ConfigWriter, TransactionalHandler): self.route = RouteHandler(self) self.dev = DeviceHandler(self) self.hop = HopHandler(self) + self.no_device_routes = list() + self.services = list() def _write_config(self): r"_write_config() -> None :: Execute all commands." + log.debug(u'IpHandler._write_config()') for device in self.devices.values(): + log.debug(u'IpHandler._write_config: processing device %s', device) if device.active: self._write_config_for_device(device) + self._bring_up_no_dev_routes() self._write_hops() + def _bring_up_no_dev_routes(self): + log.debug(u'IpHandler._bring_up_no_dev_routes()') + for route in self.no_device_routes: + try: + log.debug(u'IpHandler._bring_up_no_dev_routes: add %r', route) + call(self._render_config('route_add', dict( + dev = None, + net_addr = route.net_addr, + prefix = route.prefix, + gateway = route.gateway, + ) + ), shell=True) + except ExecutionError, e: + log.debug(u'IpHandler._write_config: error flushing -> %r', e) + def _write_hops(self): r"_write_hops() -> None :: Execute all hops." + log.debug(u'IpHandler._write_hops()') if self.hops: + log.debug(u'IpHandler._write_hops: we have hops: %r', self.hops) try: + log.debug(u'IpHandler._write_hops: flushing default hops') call('ip route del default', shell=True) except ExecutionError, e: - print e + log.debug(u'IpHandler._write_hops: error adding -> %r', e) try: + log.debug(u'IpHandler._write_hops: configuring hops') #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 + 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 + log.debug(u'IpHandler._write_hops: error adding -> %r', e) def _write_config_for_device(self, device): - r"_write_config_for_device(self, device) -> None :: Execute all commands for a device." + r"_write_config_for_device(self, device) -> None :: Execute commands." + log.debug(u'IpHandler._write_config_for_device()') try: - call(self._render_config('route_flush', dict(dev=device.name)), shell=True) + log.debug(u'IpHandler._write_config_for_device: flushing routes...') + call(self._render_config('route_flush', dict(dev=device.name)), + shell=True) except ExecutionError, e: - print e + log.debug(u'IpHandler._write_config_for_device: error flushing ' + u'-> %r', e) try: - call(self._render_config('ip_flush', dict(dev=device.name)), shell=True) + log.debug(u'IpHandler._write_config_for_device: flushing addrs...') + call(self._render_config('ip_flush', dict(dev=device.name)), + shell=True) except ExecutionError, e: - print e + log.debug(u'IpHandler._write_config_for_device: error flushing ' + u'-> %r', e) for address in device.addrs.values(): broadcast = address.broadcast if broadcast is None: broadcast = '+' try: + log.debug(u'IpHandler._write_config_for_device: adding %r', + address) call(self._render_config('ip_add', dict( dev = device.name, addr = address.ip, @@ -226,9 +272,12 @@ class IpHandler(Restorable, ConfigWriter, TransactionalHandler): ) ), shell=True) except ExecutionError, e: - print e + log.debug(u'IpHandler._write_config_for_device: error adding ' + u'-> %r', e) for route in device.routes: try: + log.debug(u'IpHandler._write_config_for_device: adding %r', + route) call(self._render_config('route_add', dict( dev = device.name, net_addr = route.net_addr, @@ -237,35 +286,73 @@ class IpHandler(Restorable, ConfigWriter, TransactionalHandler): ) ), shell=True) except ExecutionError, e: - print e + log.debug(u'IpHandler._write_config_for_device: error adding ' + u'-> %r', e) def handle_timer(self): + log.debug(u'IpHandler.handle_timer()') self.refresh_devices() - def refresh_devices(self): + log.debug(u'IpHandler.update_devices()') 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: + log.debug(u'IpHandler.update_devices: adding %r', v) self.devices[k] = v - else if not self.devices[k].active + 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() + self._bring_up_no_dev_routes() + self._restart_services() + #mark inactive devices for k in self.devices.keys(): + go_down = False if k not in devices: + log.debug(u'IpHandler.update_devices: removing %s', k) self.devices[k].active = False + go_down = True + if go_down: + self._bring_up_no_dev_routes() + + def _restart_services(self): + for s in self.services: + if s._service_running: + try: + s.stop() + except ExecutionError: + pass + try: + s.start() + except ExecutionError: + pass + + #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'): + self.services.append(serv) + + if __name__ == '__main__': - ip = IpHanlder() + logging.basicConfig( + level = logging.DEBUG, + format = '%(asctime)s %(levelname)-8s %(message)s', + datefmt = '%H:%M:%S', + ) + + ip = IpHandler() print '----------------------' ip.hop.add('201.21.32.53','eth0') ip.hop.add('205.65.65.25','eth1')