def get(self,metadata=True, *args, **kwargs):
resource = super(ResourceManager, self).get(*args, **kwargs)
if metadata:
if cache.get(resource.global_id) is None:
resource.metadata = get_resource_metadata(resource.global_id)
cache.set(resource.global_id, resource.metadata, 120)
else:
resource.metadata = cache.get(resource.global_id)
return resource
def read(self, request, local_id='', type='', role='', ticket=''):
"""
Process a search user request.
Arguments:
request (HTTP request istance): HTTP request send from client.
ticket (string) : base 64 ticket.
global_id (list): list of global id to check
local_id (list) : list of local id to check
type (string) : the type of the resource
role (string) : the role to be checked
ticket (string) : the authentication ticket - optional
Return:
Successes - Json/xml/yaml format response
Failure - 403 error
"""
try:
client_address = request.META['REMOTE_ADDR']
try:
if request.GET.get('ticket'):
user, tkt64 = authenticate(ticket=request.GET['ticket'], cip=client_address)
else:
auth = request.META['HTTP_AUTHORIZATION'].split()
if len(auth) == 2:
if auth[0].lower() == 'basic':
# Currently, only basic http auth is used.
username, ticket = base64.b64decode(auth[1]).split(':')
user, tkt64 = authenticate(ticket=ticket, cip=client_address)
except Exception, e:
response = HttpResponse(status=401)
response._is_string = True
return response
if user is not None:
if request.GET.get('role','') not in Roles:
response = HttpResponse(status=403)
response._is_string = True
return response
role = request.GET['role']
# if global_id is provided, look for local resources
if 'global_id' in request.GET:
global_ids = request.GET.getlist('global_id', [])
resources = []
for global_id in global_ids:
try:
resource = Resource.objects.get(global_id=global_id, metadata=False)
except ObjectDoesNotExist, e:
metadata = get_resource_metadata(global_id)
author = User.objects.get(username=metadata['author'])
if metadata['type'] == "Workflow":
resource, created = Workflow.objects.get_or_create(global_id=global_id, metadata=metadata, owner=author, type=metadata['type'])
resource.save()
resource = resource.resource_ptr
else:
resource, created = Resource.objects.get_or_create(global_id=global_id, metadata=metadata, owner=author, type=metadata['type'])
resource.save()
if resource.can_I(role, user):
resources.append(resource)
else:
return False
if len(resources) == 0:
# no resources with given ids!
response = HttpResponse(status=403)
response._is_string = True
return response
return True
# if resource_type and local_ids are provided,
else:
local_ids = request.GET.getlist('local_id', [])
resources = []
for local_id in local_ids:
r = filter_resources_by_facet(request.GET['type'], 'localID', local_id )
resources += r['resource_metadata']
if len(resources) == 0:
# no resources with given ids!
response = HttpResponse(status=403)
response._is_string = True
return response
for resource in resources:
resource = resource.value
try:
if resource['localID'] not in local_ids:
continue
author = User.objects.get(username=resource['author'])
if resource['type'] == "Workflow":
resource_in_db, created = Workflow.objects.get_or_create(global_id=resource['globalID'], metadata=resource, owner=author, type=resource['type'])
resource_in_db.save()
resource_in_db = resource_in_db.resource_ptr
else:
resource_in_db, created = Resource.objects.get_or_create(global_id=resource['globalID'], metadata=resource, owner=author, type=resource['type'])
resource_in_db.save()
if not resource_in_db.can_I(role, user):
return False
except ObjectDoesNotExist, e:
# not in local db, no roles
return False
return True
def update_views_counter(self):
metadata = get_resource_metadata(self.global_id)
try:
views = int(metadata['views']) + 1
except ValueError, e:
views = 1
