Improve ProcessManager to manage registerable named services.

[software/pymin.git] / pymin / services / firewall / __init__.py

diff --git a/pymin/services/firewall/__init__.py b/pymin/services/firewall/__init__.py
index dbf9b155015e4053cc32cc83e96c2537d18dec09..06b41915cd4a78b66a300dee08f0ce51eec666cc 100644 (file)
--- a/pymin/services/firewall/__init__.py
+++ b/pymin/services/firewall/__init__.py
@@ -8,62 +8,9 @@ from os import path
 from pymin.seqtools import Sequence
 from pymin.dispatcher import Handler, handler, HandlerError
 from pymin.services.util import Restorable, ConfigWriter, ServiceHandler, \
 from pymin.seqtools import Sequence
 from pymin.dispatcher import Handler, handler, HandlerError
 from pymin.services.util import Restorable, ConfigWriter, ServiceHandler, \

-                                TransactionalHandler
-
-__ALL__ = ('FirewallHandler', 'Error', 'RuleError', 'RuleAlreadyExistsError',
-           'RuleNotFoundError')
-
-class Error(HandlerError):
-    r"""
-    Error(command) -> Error instance :: Base FirewallHandler exception class.
-
-    All exceptions raised by the FirewallHandler inherits from this one, so you can
-    easily catch any FirewallHandler exception.
-
-    message - A descriptive error message.
-    """
-
-    def __init__(self, message):
-        r"Initialize the Error object. See class documentation for more info."
-        self.message = message
-
-    def __str__(self):
-        return self.message
-
-class RuleError(Error, KeyError):
-    r"""
-    RuleError(rule) -> RuleError instance.
-
-    This is the base exception for all rule related errors.
-    """
-
-    def __init__(self, rule):
-        r"Initialize the object. See class documentation for more info."
-        self.message = 'Rule error: "%s"' % rule
-
-class RuleAlreadyExistsError(RuleError):
-    r"""
-    RuleAlreadyExistsError(rule) -> RuleAlreadyExistsError instance.
-
-    This exception is raised when trying to add a rule that already exists.
-    """
-
-    def __init__(self, rule):
-        r"Initialize the object. See class documentation for more info."
-        self.message = 'Rule already exists: "%s"' % rule
-
-class RuleNotFoundError(RuleError):
-    r"""
-    RuleNotFoundError(rule) -> RuleNotFoundError instance.
-
-    This exception is raised when trying to operate on a rule that doesn't
-    exists.
-    """
-
-    def __init__(self, rule):
-        r"Initialize the object. See class documentation for more info."
-        self.message = 'Rule not found: "%s"' % rule
+                                TransactionalHandler, ListSubHandler

 
 

+__ALL__ = ('FirewallHandler',)

 
 class Rule(Sequence):
     r"""Rule(chain, target[, src[, dst[, ...]]]) -> Rule instance.
 
 class Rule(Sequence):
     r"""Rule(chain, target[, src[, dst[, ...]]]) -> Rule instance.


@@ -103,77 +50,24 @@ class Rule(Sequence):
         if src_port is not None: self.src_port = src_port
         if dst_port is not None: self.dst_port = dst_port
 
         if src_port is not None: self.src_port = src_port
         if dst_port is not None: self.dst_port = dst_port
 

-    def __cmp__(self, other):
-        r"Compares two Rule objects."
-        if self.chain == other.chain \
-                and self.target == other.target \
-                and self.src == other.src \
-                and self.dst == other.dst \
-                and self.protocol == other.protocol \
-                and self.src_port == other.src_port \
-                and self.dst_port == other.dst_port:
-            return 0
-        return cmp(id(self), id(other))
-

     def as_tuple(self):
         r"Return a tuple representing the rule."
         return (self.chain, self.target, self.src, self.dst, self.protocol,
     def as_tuple(self):
         r"Return a tuple representing the rule."
         return (self.chain, self.target, self.src, self.dst, self.protocol,

-                    self.src_port)
+                    self.src_port, self.dst_port)

 
 

-class RuleHandler(Handler):
-    r"""RuleHandler(rules) -> RuleHandler instance :: Handle a list of rules.
+class RuleHandler(ListSubHandler):
+    r"""RuleHandler(parent) -> RuleHandler instance :: Handle a list of rules.

 
     This class is a helper for FirewallHandler to do all the work related to rules
     administration.
 
 
     This class is a helper for FirewallHandler to do all the work related to rules
     administration.
 

-    rules - A list of Rule objects.
+    parent - The parent service handler.

     """
 
     """
 

-    def __init__(self, rules):
-        r"Initialize the object, see class documentation for details."
-        self.rules = rules
-
-    @handler(u'Add a new rule.')
-    def add(self, *args, **kwargs):
-        r"add(rule) -> None :: Add a rule to the rules list (see Rule doc)."
-        rule = Rule(*args, **kwargs)
-        if rule in self.rules:
-            raise RuleAlreadyExistsError(rule)
-        self.rules.append(rule)
-
-    @handler(u'Update a rule.')
-    def update(self, index, *args, **kwargs):
-        r"update(index, rule) -> None :: Update a rule (see Rule doc)."
-        # TODO check if the modified rule is the same of an existing one
-        index = int(index) # TODO validation
-        try:
-            self.rules[index].update(*args, **kwargs)
-        except IndexError:
-            raise RuleNotFoundError(index)
-
-    @handler(u'Delete a rule.')
-    def delete(self, index):
-        r"delete(index) -> Rule :: Delete a rule from the list returning it."
-        index = int(index) # TODO validation
-        try:
-            return self.rules.pop(index)
-        except IndexError:
-            raise RuleNotFoundError(index)
-
-    @handler(u'Get information about a rule.')
-    def get(self, index):
-        r"get(rule) -> Rule :: Get all the information about a rule."
-        index = int(index) # TODO validation
-        try:
-            return self.rules[index]
-        except IndexError:
-            raise RuleNotFoundError(index)
-
-    @handler(u'Get information about all rules.')
-    def show(self):
-        r"show() -> list of Rules :: List all the complete rules information."
-        return self.rules
+    handler_help = u"Manage firewall rules"

 
 

+    _cont_subhandler_attr = 'rules'
+    _cont_subhandler_class = Rule

 
 class FirewallHandler(Restorable, ConfigWriter, ServiceHandler,
                       TransactionalHandler):
 
 class FirewallHandler(Restorable, ConfigWriter, ServiceHandler,
                       TransactionalHandler):


@@ -188,7 +82,9 @@ class FirewallHandler(Restorable, ConfigWriter, ServiceHandler,
     Both defaults to the current working directory.
     """
 
     Both defaults to the current working directory.
     """
 

-    _persistent_attrs = 'rules'
+    handler_help = u"Manage firewall service"
+
+    _persistent_attrs = ['rules']

 
     _restorable_defaults = dict(rules=list())
 
 
     _restorable_defaults = dict(rules=list())
 


@@ -199,14 +95,14 @@ class FirewallHandler(Restorable, ConfigWriter, ServiceHandler,
         r"Initialize the object, see class documentation for details."
         self._persistent_dir = pickle_dir
         self._config_writer_cfg_dir = config_dir
         r"Initialize the object, see class documentation for details."
         self._persistent_dir = pickle_dir
         self._config_writer_cfg_dir = config_dir

-        self._service_start = path.join(self._config_writer_cfg_dir,
-                                                    self._config_writer_files)
+        self._service_start = ('sh', path.join(self._config_writer_cfg_dir,
+                                        self._config_writer_files))

         self._service_stop = ('iptables', '-t', 'filter', '-F')
         self._service_restart = self._service_start
         self._service_reload = self._service_start
         self._config_build_templates()
         self._service_stop = ('iptables', '-t', 'filter', '-F')
         self._service_restart = self._service_start
         self._service_reload = self._service_start
         self._config_build_templates()

-        self._restore()
-        self.rule = RuleHandler(self.rules)
+        ServiceHandler.__init__(self)
+        self.rule = RuleHandler(self)

 
     def _get_config_vars(self, config_file):
         return dict(rules=self.rules)
 
     def _get_config_vars(self, config_file):
         return dict(rules=self.rules)