df5a13c5ec
Allows the creation of related objects during a workflow.
For example, this patch implements importing keypairs during
the launch instance workflow and allocating floating IP
addresses during the floating IP associate workflow.
This required several significant changes:
* SelfHandlingForm should no long return a redirect.
Instead, it should return either the object it
created/acted on, or else a boolean such as True.
* The ModalFormView now differentiates between GET
and POST.
* Due to the previous two items, SelfHandlingForm
was mostly gutted (no more maybe_handle, etc.).
* Modals now operate via a "stack" where only the
top modal is visible at any given time and closing
one causes the next one to become visible.
In the process of these large changes there was a large
amount of general code cleanup, especially in the javascript
code and the existing SelfHandlingForm subclasses/ModalFormView
subclasses. Many small bugs were fixed along with the cleanup.
Implements blueprint inline-object-creation.
Fixes bug 994677.
Fixes bug 1025977.
Fixes bug 1027342.
Fixes bug 1025919.
Change-Id: I1808b34cbf6f813eaedf767a6364e815c0c5e969
110 lines
4.4 KiB
Python
110 lines
4.4 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
|
|
|
|
# Copyright 2012 United States Government as represented by the
|
|
# Administrator of the National Aeronautics and Space Administration.
|
|
# All Rights Reserved.
|
|
#
|
|
# Copyright 2012 Nebula, Inc.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License. You may obtain
|
|
# a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations
|
|
# under the License.
|
|
"""
|
|
Middleware provided and used by Horizon.
|
|
"""
|
|
|
|
import logging
|
|
|
|
from django import http
|
|
from django import shortcuts
|
|
from django.contrib import messages as django_messages
|
|
from django.contrib.auth import REDIRECT_FIELD_NAME
|
|
from django.core.urlresolvers import reverse
|
|
from django.utils import timezone
|
|
from django.utils.encoding import iri_to_uri
|
|
|
|
from horizon import exceptions
|
|
from horizon.openstack.common import jsonutils
|
|
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class HorizonMiddleware(object):
|
|
""" The main Horizon middleware class. Required for use of Horizon. """
|
|
|
|
def process_request(self, request):
|
|
""" Adds data necessary for Horizon to function to the request. """
|
|
# Activate timezone handling
|
|
tz = request.session.get('django_timezone')
|
|
if tz:
|
|
timezone.activate(tz)
|
|
|
|
request.horizon = {'dashboard': None,
|
|
'panel': None,
|
|
'async_messages': []}
|
|
|
|
def process_exception(self, request, exception):
|
|
"""
|
|
Catches internal Horizon exception classes such as NotAuthorized,
|
|
NotFound and Http302 and handles them gracefully.
|
|
"""
|
|
if isinstance(exception, (exceptions.NotAuthorized,
|
|
exceptions.NotAuthenticated)):
|
|
auth_url = reverse("login")
|
|
next_url = iri_to_uri(request.get_full_path())
|
|
if next_url != auth_url:
|
|
param = "?%s=%s" % (REDIRECT_FIELD_NAME, next_url)
|
|
redirect_to = "".join((auth_url, param))
|
|
else:
|
|
redirect_to = auth_url
|
|
# TODO(gabriel): Find a way to display an appropriate message to
|
|
# the user *on* the login form...
|
|
if request.is_ajax():
|
|
response_401 = http.HttpResponse(status=401)
|
|
response_401['X-Horizon-Location'] = redirect_to
|
|
return response_401
|
|
return shortcuts.redirect(redirect_to)
|
|
|
|
# If an internal "NotFound" error gets this far, return a real 404.
|
|
if isinstance(exception, exceptions.NotFound):
|
|
raise http.Http404(exception)
|
|
|
|
if isinstance(exception, exceptions.Http302):
|
|
# TODO(gabriel): Find a way to display an appropriate message to
|
|
# the user *on* the login form...
|
|
return shortcuts.redirect(exception.location)
|
|
|
|
def process_response(self, request, response):
|
|
"""
|
|
Convert HttpResponseRedirect to HttpResponse if request is via ajax
|
|
to allow ajax request to redirect url
|
|
"""
|
|
if request.is_ajax():
|
|
queued_msgs = request.horizon['async_messages']
|
|
if type(response) == http.HttpResponseRedirect:
|
|
# Drop our messages back into the session as per usual so they
|
|
# don't disappear during the redirect. Not that we explicitly
|
|
# use django's messages methods here.
|
|
for tag, message in queued_msgs:
|
|
getattr(django_messages, tag)(request, message)
|
|
redirect_response = http.HttpResponse()
|
|
redirect_response['X-Horizon-Location'] = response['location']
|
|
return redirect_response
|
|
if queued_msgs:
|
|
# TODO(gabriel): When we have an async connection to the
|
|
# client (e.g. websockets) this should be pushed to the
|
|
# socket queue rather than being sent via a header.
|
|
# The header method has notable drawbacks (length limits,
|
|
# etc.) and is not meant as a long-term solution.
|
|
response['X-Horizon-Messages'] = jsonutils.dumps(queued_msgs)
|
|
return response
|