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, call
+ TransactionalHandler, SubHandler, call, \
+ get_network_devices, ListComposedSubHandler, \
+ DictComposedSubHandler, Device, Address, \
+ ExecutionError
-__ALL__ = ('IpHandler', 'Error','DeviceError', 'DeviceNotFoundError',
- 'RouteError', 'RouteNotFoundError', 'RouteAlreadyExistsError',
- 'AddressError', 'AddressNotFoundError', 'AddressAlreadyExistsError')
+__ALL__ = ('IpHandler',)
-class Error(HandlerError):
- r"""
- Error(command) -> Error instance :: Base IpHandler exception class.
+# TODO: convertir HopHandler a ComposedSubHandler
- All exceptions raised by the IpHandler inherits from this one, so you can
- easily catch any IpHandler exception.
-
- message - A descriptive error message.
- """
- pass
-
-class DeviceError(Error):
-
- def __init__(self, device):
- self.message = u'Device error : "%s"' % device
-
-class DeviceNotFoundError(DeviceError):
-
- def __init__(self, device):
- self.message = u'Device not found : "%s"' % device
-
-class AddressError(Error):
-
- def __init__(self, addr):
- self.message = u'Address error : "%s"' % addr
-
-class AddressNotFoundError(AddressError):
-
- def __init__(self, address):
- self.message = u'Address not found : "%s"' % address
-
-class AddressAlreadyExistsError(AddressError):
-
- def __init__(self, address):
- self.message = u'Address already exists : "%s"' % address
-
-class RouteError(Error):
-
- def __init__(self, route):
- self.message = u'Route error : "%s"' % route
-
-class RouteNotFoundError(RouteError):
-
- def __init__(self, route):
- self.message = u'Route not found : "%s"' % route
-
-class RouteAlreadyExistsError(RouteError):
-
- def __init__(self, route):
- self.message = u'Route already exists : "%s"' % route
-
-class HopError(Error):
+class HopError(HandlerError):
def __init__(self, hop):
self.message = u'Hop error : "%s"' % hop
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.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(Handler):
+ return(self.net_addr, self.prefix, self.gateway)
+class RouteHandler(ListComposedSubHandler):
handler_help = u"Manage IP routes"
+ _comp_subhandler_cont = 'devices'
+ _comp_subhandler_attr = 'routes'
+ _comp_subhandler_class = Route
- def __init__(self, parent):
- self.parent = parent
-
- @handler(u'Adds a route to a device')
- def add(self, device, net_addr, prefix, gateway):
- if not device in self.parent.devices:
- raise DeviceNotFoundError(device)
- r = Route(net_addr, prefix, gateway)
- try:
- self.parent.devices[device].routes.index(r)
- raise RouteAlreadyExistsError(net_addr + '/' + prefix + '->' + gateway)
- except ValueError:
- self.parent.devices[device].routes.append(r)
-
- @handler(u'Deletes a route from a device')
- def delete(self, device, net_addr, prefix, gateway):
- if not device in self.parent.devices:
- raise DeviceNotFoundError(device)
- r = Route(net_addr, prefix, gateway)
- try:
- self.parent.devices[device].routes.remove(r)
- except ValueError:
- raise RouteNotFoundError(net_addr + '/' + prefix + '->' + gateway)
-
- @handler(u'Flushes routes from a device')
- def flush(self, device):
- if not device in self.parent.devices:
- raise DeviceNotFoundError(device)
- self.parent.devices[device].routes = list()
-
-
- @handler(u'List routes')
- def list(self, device):
- try:
- k = self.parent.devices[device].routes.keys()
- except ValueError:
- k = list()
- return k
-
- @handler(u'Get information about all routes')
- def show(self, device):
- try:
- k = self.parent.devices[device].routes.values()
- except ValueError:
- k = list()
- return k
-
-
-class Address(Sequence):
-
- def __init__(self, ip, prefix, broadcast):
- self.ip = ip
- self.prefix = prefix
- self.broadcast = broadcast
-
- def as_tuple(self):
- return (self.ip, self.prefix, self.broadcast)
-
-class AddressHandler(Handler):
+class AddressHandler(DictComposedSubHandler):
handler_help = u"Manage IP addresses"
+ _comp_subhandler_cont = 'devices'
+ _comp_subhandler_attr = 'addrs'
+ _comp_subhandler_class = Address
- def __init__(self, parent):
- self.parent = parent
-
- @handler(u'Adds an address to a device')
- def add(self, device, ip, prefix, broadcast='+'):
- if not device in self.parent.devices:
- raise DeviceNotFoundError(device)
- if ip in self.parent.devices[device].addrs:
- raise AddressAlreadyExistsError(ip)
- self.parent.devices[device].addrs[ip] = Address(ip, prefix, broadcast)
-
- @handler(u'Deletes an address from a device')
- def delete(self, device, ip):
- if not device in self.parent.devices:
- raise DeviceNotFoundError(device)
- if not ip in self.parent.devices[device].addrs:
- raise AddressNotFoundError(ip)
- del self.parent.devices[device].addrs[ip]
-
- @handler(u'Flushes addresses from a device')
- def flush(self, device):
- if not device in self.parent.devices:
- raise DeviceNotFoundError(device)
- self.parent.devices[device].addrs = dict()
-
- @handler(u'List all addresses from a device')
- def list(self, device):
- try:
- k = self.parent.devices[device].addrs.keys()
- except ValueError:
- k = list()
- return k
-
- @handler(u'Get information about addresses from a device')
- def show(self, device):
- try:
- k = self.parent.devices[device].addrs.values()
- except ValueError:
- k = list()
- return k
-
-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(Handler):
+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
@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)
- print self.device_template.render(dev=name, action='up')
+ call(self.device_template.render(dev=name, action='up'), shell=True)
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)
- print self.device_template.render(dev=name, action='down')
+ call(self.device_template.render(dev=name, action='down'), shell=True)
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()
-
-def get_devices():
- p = Popen(('ip', 'link', 'list'), stdout=PIPE, close_fds=True)
- string = p.stdout.read()
- p.wait()
- d = dict()
- i = string.find('eth')
- while i != -1:
- eth = string[i:i+4]
- m = string.find('link/ether', i+4)
- mac = string[ m+11 : m+11+17]
- d[eth] = Device(eth, mac)
- i = string.find('eth', m+11+17)
- return d
-
class IpHandler(Restorable, ConfigWriter, TransactionalHandler):
handler_help = u"Manage IP devices, addresses, routes and hops"
_persistent_attrs = ('devices','hops')
- devs = dict();
- devs['eth0'] = Device('eth0','00:00:00:00')
- devs['eth1'] = Device('eth1','00:00:00:00')
-
_restorable_defaults = dict(
- devices=devs,
+ devices=get_network_devices(),
hops = list()
)
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)
def _write_config(self):
r"_write_config() -> None :: Execute all commands."
+ log.debug(u'IpHandler._write_config()')
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))
+ log.debug(u'IpHandler._write_config: processing device %s', device)
+ try:
+ log.debug(u'IpHandler._write_config: flushing routes...')
+ call(self._render_config('route_flush', dict(dev=device.name)),
+ shell=True)
+ except ExecutionError, e:
+ log.debug(u'IpHandler._write_config: error flushing -> %r', e)
+ try:
+ log.debug(u'IpHandler._write_config: flushing addrs...')
+ call(self._render_config('ip_flush', dict(dev=device.name)),
+ shell=True)
+ except ExecutionError, e:
+ log.debug(u'IpHandler._write_config: error flushing -> %r', e)
for address in device.addrs.values():
- print self._render_config('ip_add', dict(
- dev = device.name,
- addr = address.ip,
- prefix = address.prefix,
- broadcast = address.broadcast,
- ))
- #call(self._render_config('ip_add', dict(
- #dev = device.name,
- #addr = address.ip,
- #prefix = address.prefix,
- #broadcast = address.broadcast,
- #)
- #), shell=True)
+ broadcast = address.broadcast
+ if broadcast is None:
+ broadcast = '+'
+ try:
+ log.debug(u'IpHandler._write_config: 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: error adding -> %r', e)
for route in device.routes:
- print self._render_config('route_add', dict(
- 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)
-
+ try:
+ log.debug(u'IpHandler._write_config: 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: error adding -> %r', e)
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)
+ log.debug(u'IpHandler._write_config: we have hops: %r', self.hops)
+ try:
+ log.debug(u'IpHandler._write_config: flushing default route')
+ call('ip route del default', shell=True)
+ except ExecutionError, e:
+ log.debug(u'IpHandler._write_config: error adding -> %r', e)
+ try:
+ log.debug(u'IpHandler._write_config: configuring hops')
+ call(self._render_config('hop', dict(
+ hops = self.hops,
+ )
+ ), shell=True)
+ except ExecutionError, e:
+ log.debug(u'IpHandler._write_config: error adding -> %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 devices
+ 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
+ #delete dead devices
+ for k in self.devices.keys():
+ if k not in devices:
+ log.debug(u'IpHandler.update_devices: removing %s', k)
+ del self.devices[k]
+
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.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