# vim: set encoding=utf-8 et sw=4 sts=4 :
-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.service.util import Restorable, ConfigWriter, InitdHandler, \
- TransactionalHandler, SubHandler, call, \
- get_network_devices, ListComposedSubHandler, \
- DictComposedSubHandler, ListSubHandler, \
- Device, Address, ExecutionError
-
-__all__ = ('IpHandler', 'get_service')
-
+from handler import IpHandler
def get_service(config):
return IpHandler(config.ip.pickle_dir, config.ip.config_dir)
-
-class Hop(Sequence):
-
- def __init__(self, gateway, device):
- self.gateway = gateway
- self.device = device
-
- def as_tuple(self):
- return (self.gateway, self.device)
-
- def __cmp__(self, other):
- if self.gateway == other.gateway \
- and self.device == other.device:
- return 0
- return cmp(id(self), id(other))
-
-class HopHandler(ListSubHandler):
- handler_help = u"Manage IP hops"
- _cont_subhandler_attr = 'hops'
- _cont_subhandler_class = Hop
-
- @handler('Add a hop: add <device> <gateway>')
- def add(self, dev, gw):
- if not dev in self.parent.devices:
- raise DeviceNotFoundError(device)
- return ListSubHandler.add(self, dev, gw)
-
-
-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 <net_addr> <prefix> <gateway> [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 <route_number_in_show> [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"
- _comp_subhandler_cont = 'devices'
- _comp_subhandler_attr = 'addrs'
- _comp_subhandler_class = Address
-
-
-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
- template_dir = path.join(path.dirname(__file__), 'templates')
- dev_fn = path.join(template_dir, 'device')
- self.device_template = Template(filename=dev_fn)
-
- @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','no_device_routes')
-
- _restorable_defaults = dict(
- devices=get_network_devices(),
- hops = list(),
- no_device_routes = list(),
- )
-
- _config_writer_files = ('device', 'ip_add', 'ip_del', 'ip_flush',
- 'route_add', 'route_del', 'route_flush', 'hop')
- _config_writer_tpl_dir = path.join(path.dirname(__file__), 'templates')
-
- 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()
- self._restore()
- self._write_config()
- self.addr = AddressHandler(self)
- 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:
- 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:
- active_hops.append(h)
- call(self._render_config('hop', dict(
- hops = active_hops,
- )
- ), shell=True)
- except ExecutionError, 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 commands."
- log.debug(u'IpHandler._write_config_for_device()')
- try:
- 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:
- log.debug(u'IpHandler._write_config_for_device: error flushing '
- u'-> %r', e)
- try:
- 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:
- 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,
- netmask = address.netmask,
- peer = address.peer,
- broadcast = broadcast,
- )
- ), shell=True)
- except ExecutionError, 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,
- prefix = route.prefix,
- gateway = route.gateway,
- )
- ), shell=True)
- except ExecutionError, 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
- 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__':
-
- 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')
- ip.commit()
- ip.dev.up('eth0')
- ip.addr.add('eth0','192.168.0.23','24','192.168.255.255')
- ip.addr.add('eth0','192.168.0.26','24')
- ip.commit()
- ip.route.add('eth0','192.168.0.0','24','192.168.0.1')
- ip.route.add('eth0','192.168.0.5','24','192.168.0.1')
- ip.commit()
- ip.hop.delete('201.21.32.53','eth0')
- ip.route.clear('eth0')
- ip.commit()
-
-
-
projects / software / pymin.git / blobdiff