/usr/share/pyshared/twisted/web2/plugin.py is in python-twisted-web2 8.1.0-3.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 | # -*- test-case-name: twisted.web2.test.test_plugin -*-
# Copyright (c) 2001-2004 Twisted Matrix Laboratories.
# See LICENSE for details.
"""I'm a set of utility functions and resources for using twisted.plugins
to locate resources.
Example Usage:
root.putChild('test', resourcePlugger('TestResource'))
"""
from twisted.web2 import resource, http, iweb
from twisted.plugin import getPlugins
from twisted.python.reflect import namedClass
class PluginResource(resource.Resource):
def __init__(self, *args, **kwargs):
"""A plugin resource atleast has to accept any arguments given to it,
but it doesn't have to do anything with it, this is dumb I know.
"""
pass
class TestResource(PluginResource, resource.LeafResource):
def __init__(self, foo=None, bar=None):
self.foo = foo
self.bar = bar
def locateChild(self, req, segments):
return resource.LeafResource.locateChild(self, req, segments)
def render(self, req):
return http.Response(200, stream="I am a very simple resource, a pluggable resource too")
class NoPlugin(resource.LeafResource):
def __init__(self, plugin):
self.plugin = plugin
def render(self, req):
return http.Response(404, stream="No Such Plugin %s" % self.plugin)
def resourcePlugger(name, *args, **kwargs):
resrcClass = None
for p in getPlugins(iweb.IResource):
if p.name == name:
resrcClass = namedClass(p.className)
break
if resrcClass is None:
resrcClass = kwargs.get('defaultResource', None)
if resrcClass is None:
return NoPlugin(name)
del kwargs['defaultResource']
return resrcClass(*args, **kwargs)
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