4 # this is for django objects only
5 #from django.core import serializers
6 from django.http import HttpResponse, HttpResponseForbidden
8 #from manifoldapi.manifoldquery import ManifoldQuery
9 from manifold.core.query import Query
10 from manifold.core.result_value import ResultValue
11 from manifoldapi import ManifoldAPI
12 from manifoldresult import ManifoldException
13 from manifold.util.log import Log
14 from myslice.configengine import ConfigEngine
22 # pretend the server only returns - empty lists to 'get' requests - this is to mimick
23 # misconfigurations or expired credentials or similar corner case situations
27 # this view is what the javascript talks to when it sends a query
31 # static/js/manifold.js
32 def proxy (request,format):
33 """the view associated with /manifold/proxy/
34 with the query passed using POST"""
37 if request.method != 'POST':
38 print "manifoldproxy.api: unexpected method %s -- exiting"%request.method
40 # we only support json for now
41 # if needed in the future we should probably cater for
42 # format_in : how is the query encoded in POST
43 # format_out: how to serve the results
45 print "manifoldproxy.proxy: unexpected format %s -- exiting"%format
46 return HttpResponse ({"ret":0}, mimetype="application/json")
48 # translate incoming POST request into a query object
49 if debug: print 'manifoldproxy.proxy: request.POST',request.POST
50 manifold_query = Query()
51 #manifold_query = ManifoldQuery()
52 manifold_query.fill_from_POST(request.POST)
53 # retrieve session for request
55 # We allow some requests to use the ADMIN user account
56 if (manifold_query.get_from() == 'local:user' and manifold_query.get_action() == 'create') \
57 or (manifold_query.get_from() == 'local:platform' and manifold_query.get_action() == 'get'):
58 admin_user, admin_password = ConfigEngine().manifold_admin_user_password()
59 manifold_api_session_auth = {'AuthMethod': 'password', 'Username': admin_user, 'AuthString': admin_password}
61 if 'manifold' in request.session:
62 manifold_api_session_auth = request.session['manifold']['auth']
64 json_answer=json.dumps({'code':0,'value':[]})
65 return HttpResponse (json_answer, mimetype="application/json")
67 if debug_empty and manifold_query.action.lower()=='get':
68 json_answer=json.dumps({'code':0,'value':[]})
69 print "By-passing : debug_empty & 'get' request : returning a fake empty list"
70 return HttpResponse (json_answer, mimetype="application/json")
73 manifold_api= ManifoldAPI(auth=manifold_api_session_auth)
74 if debug: print '===> manifoldproxy.proxy: sending to backend', manifold_query
75 # for the benefit of the python code, manifoldAPI raises an exception if something is wrong
76 # however in this case we want to propagate the complete manifold result to the js world
78 result = manifold_api.forward(manifold_query.to_dict())
81 if 'description' in result and result['description'] \
82 and isinstance(result['description'], (tuple, list, set, frozenset)):
83 result [ 'description' ] = [ ResultValue.to_html (x) for x in result['description'] ]
88 # resource reservation
89 if (manifold_query.action.lower() == 'update') :
90 for resources in result['value'][0]['resources'] :
91 activity.slice.resource(request, { 'slice' : result['value'][0]['slice_hrn'], 'resource' : result['value'][0]})
93 json_answer=json.dumps(result)
95 return HttpResponse (json_answer, mimetype="application/json")
98 print "** PROXY ERROR **",e
100 traceback.print_exc()
101 return HttpResponse ({"ret":0}, mimetype="application/json")
104 # see CSRF_FAILURE_VIEW in settings.py
105 # the purpose of redefining this was to display the failure reason somehow
106 # this however turns out disappointing/not very informative
107 failure_answer=[ "csrf_failure" ]
108 def csrf_failure(request, reason=""):
109 print "CSRF failure with reason '%s'"%reason
110 return HttpResponseForbidden (json.dumps (failure_answer), mimetype="application/json")