class CubesView(APIView):
permission_classes = (permissions.IsAuthenticated,)
workspace = None
SET_CUT_SEPARATOR_CHAR = '~'
def __init__(self, *args, **kwargs):
super(CubesView, self).__init__(*args, **kwargs)
self._fix_cut_separators()
def _fix_cut_separators(self):
browser.PATH_ELEMENT = r"(?:\\.|[^:%s|-])*" % self.SET_CUT_SEPARATOR_CHAR
browser.RE_ELEMENT = re.compile(r"^%s$" % browser.PATH_ELEMENT)
browser.RE_POINT = re.compile(r"^%s$" % browser.PATH_ELEMENT)
browser.SET_CUT_SEPARATOR_CHAR = self.SET_CUT_SEPARATOR_CHAR
browser.SET_CUT_SEPARATOR = re.compile(r'(?<!\\)%s' % self.SET_CUT_SEPARATOR_CHAR)
browser.RE_SET = re.compile(r"^(%s)(%s(%s))*$" % (
browser.PATH_ELEMENT, self.SET_CUT_SEPARATOR_CHAR, browser.PATH_ELEMENT
))
def initialize_slicer(self):
if self.workspace is None:
try:
config = settings.SLICER_CONFIG_FILE
cubes_root = settings.SLICER_MODELS_DIR
except AttributeError:
raise ImproperlyConfigured('settings.SLICER_CONFIG_FILE and settings.SLICER_MODELS_DIR are not set.')
self.workspace = Workspace(config=config, cubes_root=cubes_root)
def get_cube(self, request, cube_name):
self.initialize_slicer()
try:
cube = self.workspace.cube(cube_name, request.user)
except NoSuchCubeError:
raise Http404
return cube
def get_browser(self, cube):
return self.workspace.browser(cube)
def get_cell(self, request, cube, argname="cut", restrict=False):
"""Returns a `Cell` object from argument with name `argname`"""
converters = {
"time": CalendarMemberConverter(self.workspace.calendar)
}
cuts = []
for cut_string in request.QUERY_PARAMS.getlist(argname):
cuts += cuts_from_string(
cube, cut_string, role_member_converters=converters
)
if cuts:
cell = Cell(cube, cuts)
else:
cell = None
if restrict:
if self.workspace.authorizer:
cell = self.workspace.authorizer.restricted_cell(
request.user, cube=cube, cell=cell
)
return cell
def get_info(self):
self.initialize_slicer()
if self.workspace.info:
info = OrderedDict(self.workspace.info)
else:
info = OrderedDict()
info["cubes_version"] = __version__
info["timezone"] = self.workspace.calendar.timezone_name
info["first_weekday"] = self.workspace.calendar.first_weekday
info["api_version"] = API_VERSION
return info
def assert_enabled_action(self, request, browser, action):
features = browser.features()
if action not in features['actions']:
message = u"The action '{}' is not enabled".format(action)
logging.error(message)
raise ParseError(detail=message)
def _handle_pagination_and_order(self, request):
try:
page = request.QUERY_PARAMS.get('page', None)
except ValueError:
page = None
request.page = page
try:
page_size = request.QUERY_PARAMS.get('pagesize', None)
except ValueError:
page_size = None
request.page_size = page_size
# Collect orderings:
# order is specified as order=<field>[:<direction>]
order = []
for orders in request.QUERY_PARAMS.getlist('order'):
for item in orders.split(","):
split = item.split(":")
if len(split) == 1:
order.append((item, None))
else:
order.append((split[0], split[1]))
request.order = order
def initialize_request(self, request, *args, **kwargs):
request = super(CubesView, self).initialize_request(request, *args, **kwargs)
self._handle_pagination_and_order(request)
return request
