# vim: set encoding=utf-8 et sw=4 sts=4 :
# TODO COMMENT
-from mako.template import Template
-from mako.runtime import Context
from os import path
from os import unlink
+from new import instancemethod
-try:
- import cPickle as pickle
-except ImportError:
- import pickle
+from seqtools import Sequence
+from dispatcher import handler, HandlerError, Handler
+from services.util import Restorable, ConfigWriter, call
+from services.util import InitdHandler, TransactionalHandler, ParametersHandler
-try:
- from seqtools import Sequence
-except ImportError:
- # NOP for testing
- class Sequence: pass
-
-try:
- from dispatcher import handler, HandlerError, Handler
-except ImportError:
- class HandlerError(RuntimeError): pass
- class Handler: pass
- def handler(help):
- def wrapper(f):
- return f
- return wrapper
-
-
-
-__ALL__ = ('DnsHandler',)
-
-pickle_ext = '.pkl'
-
-pickle_vars = 'vars'
-pickle_zones = 'zones'
-
-config_filename = 'named.conf'
-zone_filename = 'zoneX.zone'
-zone_filename_ext = '.zone'
+__ALL__ = ('DnsHandler', 'Error',
+ 'ZoneError', 'ZoneNotFoundError', 'ZoneAlreadyExistsError',
+ 'HostError', 'HostAlreadyExistsError', 'HostNotFoundError',
+ 'MailExchangeError', 'MailExchangeAlreadyExistsError',
+ 'MailExchangeNotFoundError', 'NameServerError',
+ 'NameServerAlreadyExistsError', 'NameServerNotFoundError')
template_dir = path.join(path.dirname(__file__), 'templates')
def show(self):
return self.zones.values()
-class DnsHandler(Handler):
+class DnsHandler(Restorable, ConfigWriter, InitdHandler, TransactionalHandler,
+ ParametersHandler):
r"""DnsHandler([pickle_dir[, config_dir]]) -> DnsHandler instance.
Handles DNS service commands for the dns program.
Both defaults to the current working directory.
"""
- def __init__(self, pickle_dir='.', config_dir='.'):
- r"Initialize DnsHandler object, see class documentation for details."
- self.pickle_dir = pickle_dir
- self.config_dir = config_dir
- c_filename = path.join(template_dir, config_filename)
- z_filename = path.join(template_dir, zone_filename)
- self.config_template = Template(filename=c_filename)
- self.zone_template = Template(filename=z_filename)
- try :
- self._load()
- except IOError:
- self.zones = dict()
- self.vars = dict(
+ _initd_name = 'bind'
+
+ _persistent_vars = ('params', 'zones')
+
+ _restorable_defaults = dict(
+ zones = dict(),
+ params = dict(
isp_dns1 = '',
isp_dns2 = '',
bind_addr1 = '',
bind_addr2 = ''
- )
+ ),
+ )
+
+ _config_writer_files = ('named.conf', 'zoneX.zone')
+ _config_writer_tpl_dir = path.join(path.dirname(__file__), 'templates')
+ def __init__(self, pickle_dir='.', config_dir='.'):
+ r"Initialize DnsHandler object, see class documentation for details."
+ self._persistent_dir = pickle_dir
+ self._config_writer_cfg_dir = config_dir
+ self.mod = False
+ self._config_build_templates()
+ self._restore()
self.host = HostHandler(self.zones)
self.zone = ZoneHandler(self.zones)
self.mx = MailExchangeHandler(self.zones)
self.ns = NameServerHandler(self.zones)
- self.mod = False
- @handler(u'Set a DNS parameter')
- def set(self, param, value):
- r"set(param, value) -> None :: Set a DNS parameter."
- if not param in self.vars:
- raise ParameterNotFoundError(param)
- self.vars[param] = value
- self.mod = True
-
- @handler(u'Get a DNS parameter')
- def get(self, param):
- r"get(param) -> None :: Get a DNS parameter."
- if not param in self.vars:
- raise ParameterNotFoundError(param)
- return self.vars[param]
-
- @handler(u'List DNS parameters')
- def list(self):
- return self.vars.keys()
+ def _zone_filename(self, zone):
+ return zone.name + '.zone'
- @handler(u'Get all DNS parameters, with their values.')
- def show(self):
- return self.vars.values()
-
- @handler(u'Start the service.')
- def start(self):
- r"start() -> None :: Start the DNS service."
- #esto seria para poner en una interfaz
- #y seria el hook para arrancar el servicio
- pass
-
- @handler(u'Stop the service.')
- def stop(self):
- r"stop() -> None :: Stop the DNS service."
- #esto seria para poner en una interfaz
- #y seria el hook para arrancar el servicio
- pass
-
- @handler(u'Restart the service.')
- def restart(self):
- r"restart() -> None :: Restart the DNS service."
- #esto seria para poner en una interfaz
- #y seria el hook para arrancar el servicio
- pass
-
- @handler(u'Reload the service config (without restarting, if possible)')
- def reload(self):
- r"reload() -> None :: Reload the configuration of the DNS service."
- #esto seria para poner en una interfaz
- #y seria el hook para arrancar el servicio
- pass
-
- @handler(u'Commit the changes (reloading the service, if necessary).')
- def commit(self):
- r"commit() -> None :: Commit the changes and reload the DNS service."
- #esto seria para poner en una interfaz
- #y seria que hace el pickle deberia llamarse
- #al hacerse un commit
- self._dump()
- self._write_config()
- self.reload()
-
- @handler(u'Discard all the uncommited changes.')
- def rollback(self):
- r"rollback() -> None :: Discard the changes not yet commited."
- self._load()
-
- def _dump(self):
- r"_dump() -> None :: Dump all persistent data to pickle files."
- # XXX podría ir en una clase base
- self._dump_var(self.vars, pickle_vars)
- self._dump_var(self.zones, pickle_zones)
-
- def _load(self):
- r"_load() -> None :: Load all persistent data from pickle files."
- # XXX podría ir en una clase base
- self.vars = self._load_var(pickle_vars)
- self.zones = self._load_var(pickle_zones)
-
- def _pickle_filename(self, name):
- r"_pickle_filename() -> string :: Construct a pickle filename."
- # XXX podría ir en una clase base
- return path.join(self.pickle_dir, name) + pickle_ext
-
- def _dump_var(self, var, name):
- r"_dump_var() -> None :: Dump a especific variable to a pickle file."
- # XXX podría ir en una clase base
- pkl_file = file(self._pickle_filename(name), 'wb')
- pickle.dump(var, pkl_file, 2)
- pkl_file.close()
-
- def _load_var(self, name):
- r"_load_var() -> object :: Load a especific pickle file."
- # XXX podría ir en una clase base
- return pickle.load(file(self._pickle_filename(name)))
+ def _get_config_vars(self, config_file):
+ return dict(zones=self.zones.values(), **self.params)
def _write_config(self):
r"_write_config() -> None :: Generate all the configuration files."
- # XXX podría ir en una clase base, ver como generalizar variables a
- # reemplazar en la template
- #archivos de zona
delete_zones = list()
for a_zone in self.zones.values():
if a_zone.mod:
if not a_zone.new:
# TODO freeze de la zona
- print 'Freezing zone ' + a_zone.name + zone_filename_ext
- zone_out_file = file(path.join(self.config_dir, a_zone.name + zone_filename_ext), 'w')
- ctx = Context(
- zone_out_file,
+ call(('dns', 'freeze', a_zone.name))
+ vars = dict(
zone = a_zone,
hosts = a_zone.hosts.values(),
mxs = a_zone.mxs.values(),
nss = a_zone.nss.values()
- )
- self.zone_template.render_context(ctx)
- zone_out_file.close()
+ )
+ self._write_single_config('zoneX.zone',
+ self._zone_filename(a_zone), vars)
a_zone.mod = False
if not a_zone.new:
# TODO unfreeze de la zona
- print 'Unfreezing zone ' + a_zone.name + zone_filename_ext
+ call(('dns', 'unfreeze', a_zone.name))
else :
self.mod = True
a_zone.new = False
#borro el archivo .zone
try:
self.mod = True
- unlink(path.join(self.config_dir, a_zone.name + zone_filename_ext))
+ unlink(self._zone_filename(a_zone))
except OSError:
#la excepcion pude darse en caso que haga un add de una zona y
#luego el del, como no hice commit, no se crea el archivo
for z in delete_zones:
del self.zones[z]
#archivo general
- if self.mod :
- cfg_out_file = file(path.join(self.config_dir, config_filename), 'w')
- ctx = Context(cfg_out_file, zones=self.zones.values(), **self.vars)
- self.config_template.render_context(ctx)
- cfg_out_file.close()
+ if self.mod:
+ self._write_single_config('named.conf')
self.mod = False
- print 'Restarting service'
-
-
+ self.reload()
if __name__ == '__main__':
dns.commit()
- print 'ZONAS :'
- print dns.zone.show() + '\n'
- print 'HOSTS :'
- print dns.host.show()
+ print 'ZONAS :', dns.zone.show()
+ print 'HOSTS :', dns.host.show()
#test zone errors
- try:
- dns.zone.update('zone-sarasa','lalal')
- except ZoneNotFoundError, inst:
- print 'Error: ', inst
+ #try:
+ # dns.zone.update('zone-sarasa','lalal')
+ #except ZoneNotFoundError, inst:
+ # print 'Error: ', inst
try:
dns.zone.delete('zone-sarasa')
except ZoneNotFoundError, inst:
print 'Error: ', inst
- try:
- dns.zone.add('zona_loca.com','ns1.dom.com','ns2.dom.com')
- except ZoneAlreadyExistsError, inst:
- print 'Error: ', inst
+ #try:
+ # dns.zone.add('zona_loca.com','ns1.dom.com','ns2.dom.com')
+ #except ZoneAlreadyExistsError, inst:
+ # print 'Error: ', inst
#test hosts errors
try:
projects / software / pymin.git / blobdiff