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configobjfactory.py
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79 lines (54 loc) · 2.47 KB
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#!/usr/bin/env python
# encoding: utf-8
"""
A class for creating a Twisted service that is configured using IPython's
configuration system.
"""
#-----------------------------------------------------------------------------
# Copyright (C) 2008-2009 The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
import zope.interface as zi
from IPython.config.configurable import Configurable
#-----------------------------------------------------------------------------
# Code
#-----------------------------------------------------------------------------
class IConfiguredObjectFactory(zi.Interface):
"""I am a component that creates a configured object.
This class is useful if you want to configure a class that is not a
subclass of :class:`IPython.config.configurable.Configurable`.
"""
def __init__(config=None):
"""Get ready to configure the object using config."""
def create():
"""Return an instance of the configured object."""
class ConfiguredObjectFactory(Configurable):
zi.implements(IConfiguredObjectFactory)
def __init__(self, config=None):
super(ConfiguredObjectFactory, self).__init__(config=config)
def create(self):
raise NotImplementedError('create must be implemented in a subclass')
class IAdaptedConfiguredObjectFactory(zi.Interface):
"""I am a component that adapts and configures an object.
This class is useful if you have the adapt an instance and configure it.
"""
def __init__(config=None, adaptee=None):
"""Get ready to adapt adaptee and then configure it using config."""
def create():
"""Return an instance of the adapted and configured object."""
class AdaptedConfiguredObjectFactory(Configurable):
# zi.implements(IAdaptedConfiguredObjectFactory)
def __init__(self, config=None, adaptee=None):
# print
# print "config pre:", config
super(AdaptedConfiguredObjectFactory, self).__init__(config=config)
# print
# print "config post:", config
self.adaptee = adaptee
def create(self):
raise NotImplementedError('create must be implemented in a subclass')