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"""
Config.py is a repository of the Cobbler object model
Michael DeHaan <mdehaan@redhat.com>
"""
import os
import weakref
import item_distro as distro
import item_profile as profile
import item_system as system
import collection_distros as distros
import collection_profiles as profiles
import collection_systems as systems
import settings
import serializer
class Config:
def __init__(self):
"""
Constructor. Manages a definitive copy of all data collections with weakrefs
poiting back into the class so they can understand each other's contents
"""
self._distros = distros.Distros(weakref.proxy(self))
self._profiles = profiles.Profiles(weakref.proxy(self))
self._systems = systems.Systems(weakref.proxy(self))
self._settings = settings.Settings() # not a true collection
self._classes = [
self._distros,
self._profiles,
self._systems,
self._settings,
]
self.file_check()
def distros(self):
"""
Return the definitive copy of the Distros collection
"""
return self._distros
def profiles(self):
"""
Return the definitive copy of the Profiles collection
"""
return self._profiles
def systems(self):
"""
Return the definitive copy of the Systems collection
"""
return self._systems
def settings(self):
"""
Return the definitive copy of the application settings
"""
return self._settings
def new_distro(self):
"""
Create a new distro object with a backreference to this object
"""
return distro.Distro(weakref.proxy(self))
def new_system(self):
"""
Create a new system with a backreference to this object
"""
return system.System(weakref.proxy(self))
def new_profile(self):
"""
Create a new profile with a backreference to this object
"""
return profile.Profile(weakref.proxy(self))
def clear(self):
"""
Forget about all loaded configuration data
"""
for x in self._classes:
x.clear()
return True
def file_check(self):
"""
Serialize any files that do not yet exist. This is useful for bringing the
app up to a working state on first run or if files are deleted. See api.py
"""
for x in self._classes:
if not os.path.exists(x.filename()):
if not serializer.serialize(x):
return False
return True
def serialize(self):
"""
Save the object hierarchy to disk, using the filenames referenced in each object.
"""
for x in self._classes:
if not serializer.serialize(x):
return False
return True
def deserialize(self):
"""
Load the object hierachy from disk, using the filenames referenced in each object.
"""
for x in self._classes:
if not serializer.deserialize(x):
return False
return True
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