# vim: set encoding=utf-8 et sw=4 sts=4 :
-from mako.template import Template
-from mako.runtime import Context
-from subprocess import Popen, PIPE
from os import path
-try:
- import cPickle as pickle
-except ImportError:
- import pickle
-
-try:
- from seqtools import Sequence
-except ImportError:
- # NOP for testing
- class Sequence: pass
-try:
- from dispatcher import handler, HandlerError, Handler
-except ImportError:
- # NOP for testing
- class HandlerError(RuntimeError): pass
- class Handler: pass
- def handler(help):
- def wrapper(f):
- return f
- return wrapper
-
-__ALL__ = ('ProxyHandler')
-
-pickle_ext = '.pkl'
-pickle_vars = 'vars'
-pickle_hosts= 'hosts'
-pickle_users = 'users'
-config_filename = 'squid.conf'
-
-template_dir = path.join(path.dirname(__file__), 'templates')
+from seqtools import Sequence
+from dispatcher import Handler, handler, HandlerError
+from services.util import Restorable, ConfigWriter
+from services.util import InitdHandler, TransactionalHandler, ParametersHandler
+
+__ALL__ = ('ProxyHandler', 'Error', 'HostError', 'HostAlreadyExistsError',
+ 'HostNotFoundError', 'ParameterError', 'ParameterNotFoundError')
class Error(HandlerError):
r"""
return self.hosts.items()
-class ProxyHandler(Handler):
+class ProxyHandler(Restorable, ConfigWriter, InitdHandler,
+ TransactionalHandler, ParametersHandler):
+
+ _initd_name = 'squid'
+
+ _persistent_attrs = ('params', 'hosts')
+
+ _restorable_defaults = dict(
+ hosts = dict(),
+ params = dict(
+ ip = '192.168.0.1',
+ port = '8080',
+ ),
+ )
+
+ _config_writer_files = 'squid.conf'
+ _config_writer_tpl_dir = path.join(path.dirname(__file__), 'templates')
def __init__(self, pickle_dir='.', config_dir='.'):
- self.pickle_dir = pickle_dir
- self.config_dir = config_dir
- f = path.join(template_dir, config_filename)
- self.config_template = Template(filename=f)
- try:
- self._load()
- except IOError:
- self.hosts = dict()
- self.vars = dict(
- ip = '192.168.0.1',
- port = '8080',
- )
+ r"Initialize DhcpHandler object, see class documentation for details."
+ self._persistent_dir = pickle_dir
+ self._config_writer_cfg_dir = config_dir
+ self._config_build_templates()
+ self._restore()
self.host = HostHandler(self.hosts)
- @handler(u'Set a Proxy parameter')
- def set(self, param, value):
- r"set(param, value) -> None :: Set a Proxy parameter."
- if not param in self.vars:
- raise ParameterNotFoundError(param)
- self.vars[param] = value
-
- @handler(u'Get a DNS parameter')
- def get(self, param):
- r"get(param) -> None :: Get a Proxy parameter."
- if not param in self.vars:
- raise ParameterNotFoundError(param)
- return self.vars[param]
-
- @handler(u'List Proxy parameters')
- def list(self):
- return self.vars.keys()
-
- @handler(u'Get all Proxy 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
- print('reloading configuration')
-
- @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.hosts, pickle_hosts)
-
- 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.hosts = self._load_var(pickle_hosts)
-
- 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 _write_config(self):
- r"_write_config() -> None :: Generate all the configuration files."
- out_file = file(path.join(self.config_dir, config_filename), 'w')
- ctx = Context(out_file,
- ip = self.vars['ip'],
- port = self.vars['port'],
- hosts = self.hosts.values()
- )
- self.config_template.render_context(ctx)
- out_file.close()
+ def _get_config_vars(self, config_file):
+ return dict(hosts=self.hosts.values(), **self.params)
if __name__ == '__main__':
projects / software / pymin.git / blobdiff