awx/awx/main/middleware.py
2016-01-12 11:20:43 -05:00

123 lines
4.5 KiB
Python

# Copyright (c) 2015 Ansible, Inc.
# All Rights Reserved.
import logging
import threading
import uuid
from django.contrib.auth.models import User
from django.db.models.signals import post_save
from django.db import IntegrityError
from django.http import HttpResponseRedirect
from django.template.response import TemplateResponse
from django.utils.functional import curry
from awx import __version__ as version
from awx.main.models import ActivityStream, Instance
from awx.main.conf import tower_settings
from awx.api.authentication import TokenAuthentication
logger = logging.getLogger('awx.main.middleware')
class ActivityStreamMiddleware(threading.local):
def __init__(self):
self.disp_uid = None
self.instance_ids = []
def process_request(self, request):
if hasattr(request, 'user') and hasattr(request.user, 'is_authenticated') and request.user.is_authenticated():
user = request.user
else:
user = None
set_actor = curry(self.set_actor, user)
self.disp_uid = str(uuid.uuid1())
self.instance_ids = []
post_save.connect(set_actor, sender=ActivityStream, dispatch_uid=self.disp_uid, weak=False)
def process_response(self, request, response):
drf_request = getattr(request, 'drf_request', None)
drf_user = getattr(drf_request, 'user', None)
if self.disp_uid is not None:
post_save.disconnect(dispatch_uid=self.disp_uid)
for instance in ActivityStream.objects.filter(id__in=self.instance_ids):
if drf_user and drf_user.id:
instance.actor = drf_user
try:
instance.save(update_fields=['actor'])
except IntegrityError:
logger.debug("Integrity Error saving Activity Stream instance for id : " + str(instance.id))
# else:
# obj1_type_actual = instance.object1_type.split(".")[-1]
# if obj1_type_actual in ("InventoryUpdate", "ProjectUpdate", "Job") and instance.id is not None:
# instance.delete()
self.instance_ids = []
return response
def set_actor(self, user, sender, instance, **kwargs):
if sender == ActivityStream:
if isinstance(user, User) and instance.actor is None:
user = User.objects.filter(id=user.id)
if user.exists():
user = user[0]
instance.actor = user
instance.save(update_fields=['actor'])
else:
if instance.id not in self.instance_ids:
self.instance_ids.append(instance.id)
class HAMiddleware(object):
"""A middleware class that checks to see whether the request is being
served on a secondary instance, and redirects the request back to the
primary instance if so.
"""
def process_request(self, request):
"""Process the request, and redirect if this is a request on a
secondary node.
"""
# Is this the primary node? If so, we can just return None and be done;
# we just want normal behavior in this case.
if Instance.objects.my_role() == 'primary':
return None
# Always allow the /ping/ endpoint.
if request.path.startswith('/api/v1/ping'):
return None
# Get the primary instance.
primary = Instance.objects.primary()
# If this is a request to /, then we return a special landing page that
# informs the user that they are on the secondary instance and will
# be redirected.
if request.path == '/':
return TemplateResponse(request, 'ha/redirect.html', {
'primary': primary,
'redirect_seconds': 30,
'version': version,
})
# Redirect to the base page of the primary instance.
return HttpResponseRedirect('http://%s%s' % (primary.hostname, request.path))
class AuthTokenTimeoutMiddleware(object):
"""Presume that when the user includes the auth header, they go through the
authentication mechanism. Further, that mechanism is presumed to extend
the users session validity time by AUTH_TOKEN_EXPIRATION.
If the auth token is not supplied, then don't include the header
"""
def process_response(self, request, response):
if not TokenAuthentication._get_x_auth_token_header(request):
return response
response['Auth-Token-Timeout'] = int(tower_settings.AUTH_TOKEN_EXPIRATION)
return response