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from zope.component import getMultiAdapter
from zope.component import queryMultiAdapter
from zope.interface import directlyProvides
from webob import Request
from webob.exc import HTTPNotFound
from repoze.bfg.interfaces import IPublishTraverserFactory
from repoze.bfg.interfaces import IViewFactory
from repoze.bfg.interfaces import IWSGIApplicationFactory
from repoze.bfg.interfaces import IRequest
_marker = ()
class Router:
def __init__(self, root_policy, app_context):
self.root_policy = root_policy
self.app_context = app_context
def __call__(self, environ, start_response):
request = Request(environ)
directlyProvides(request, IRequest)
root = self.root_policy(environ)
path = environ.get('PATH_INFO', '/')
traverser = getMultiAdapter((root, request), IPublishTraverserFactory)
context, name, subpath = traverser(path)
request.subpath = subpath
request.view_name = name
app = queryMultiAdapter((context, request), IViewFactory, name=name,
default=_marker)
if app is _marker:
app = HTTPNotFound(request.url)
else:
app = getMultiAdapter((context, request, app),
IWSGIApplicationFactory)
return app(environ, start_response)
# enable the below when we figure out app-local registries
## def app_component_registry(app_context):
## registry = getattr(app_context, 'registry', None)
## if registry is None:
## from zope.component.registry import Components
## app_context.registry = Components()
## return app_context.registry
def make_app(root_policy, package=None, filename='configure.zcml'):
import zope.configuration.xmlconfig
context = zope.configuration.xmlconfig.file(filename, package=package)
return Router(root_policy, context)
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