441 lines
17 KiB
Python
441 lines
17 KiB
Python
# bijoe - BI dashboard
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# Copyright (C) 2015 Entr'ouvert
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU Affero General Public License as published
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# by the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from __future__ import unicode_literals
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import hashlib
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import json
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from django.conf import settings
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from django.contrib import messages
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from django.utils.encoding import force_bytes, force_text
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from django.utils.text import slugify
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from django.utils.translation import ungettext, ugettext as _
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from django.views.generic.edit import CreateView, DeleteView, UpdateView, FormView
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from django.views.generic.list import MultipleObjectMixin
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from django.views.generic import DetailView, ListView, View, TemplateView
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from django.shortcuts import redirect
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from django.core.urlresolvers import reverse, reverse_lazy
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from django.http import HttpResponse, Http404
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from django.core.exceptions import PermissionDenied
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from django.views.decorators.clickjacking import xframe_options_exempt
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from rest_framework import generics
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from rest_framework.response import Response
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from bijoe.utils import get_warehouses, import_site, export_site
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from ..engine import Engine
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from . import models, forms, signature
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from .utils import Visualization
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from .. import views
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class WarehouseView(views.AuthorizationMixin, TemplateView):
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template_name = 'bijoe/warehouse.html'
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def get_context_data(self, **kwargs):
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ctx = super(WarehouseView, self).get_context_data(**kwargs)
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try:
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warehouse = [warehouse for warehouse in get_warehouses()
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if warehouse.name == self.kwargs['warehouse']][0]
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except IndexError:
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raise Http404
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ctx['warehouse'] = Engine(warehouse)
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ctx['cubes'] = sorted(ctx['warehouse'].cubes, key=lambda cube: cube.label.strip().lower())
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ctx['visualizations_exist'] = models.Visualization.objects.exists()
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return ctx
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class CubeDisplayMixin(object):
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def get_context_data(self, **kwargs):
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ctx = super(CubeDisplayMixin, self).get_context_data(**kwargs)
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ctx['warehouse'] = self.warehouse
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ctx['cube'] = self.cube
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ctx['visualization'] = self.visualization
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return ctx
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class CubeMixin(object):
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def visualization(self, request, cube):
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self.form = forms.CubeForm(cube=self.cube, data=request.GET or request.POST)
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if self.form.is_valid():
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return Visualization.from_form(self.cube, self.form)
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def dispatch(self, request, *args, **kwargs):
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try:
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self.warehouse = Engine([warehouse for warehouse in get_warehouses()
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if warehouse.name == self.kwargs['warehouse']][0])
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except IndexError:
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raise Http404
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try:
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self.cube = self.warehouse[self.kwargs['cube']]
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except KeyError:
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raise Http404
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self.visualization = self.visualization(request, cube)
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return super(CubeMixin, self).dispatch(request, *args, **kwargs)
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class CubeView(views.AuthorizationMixin, CubeDisplayMixin, CubeMixin, TemplateView):
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template_name = 'bijoe/cube.html'
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def post(self, request, *args, **kwargs):
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if 'ods' in self.request.POST:
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return self.ods(self.visualization)
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return self.get(request, *args, **kwargs)
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def get_context_data(self, **kwargs):
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ctx = super(CubeView, self).get_context_data(**kwargs)
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ctx['form'] = self.form
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return ctx
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class CreateVisualizationView(views.AuthorizationMixin, CubeMixin, CreateView):
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model = models.Visualization
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form_class = forms.VisualizationForm
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template_name = 'bijoe/create_visualization.html'
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success_url = '/visualization/{id}/'
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def get(self, request, *args, **kwargs):
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if not self.visualization:
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return redirect('homepage')
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return super(CreateVisualizationView, self).get(request, *args, **kwargs)
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def form_valid(self, form):
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if not self.visualization:
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return redirect('homepage')
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form.instance.parameters = self.visualization.to_json()
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return super(CreateVisualizationView, self).form_valid(form)
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class SaveAsVisualizationView(views.AuthorizationMixin, DetailView, CreateView):
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model = models.Visualization
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form_class = forms.VisualizationForm
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template_name = 'bijoe/create_visualization.html'
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success_url = '/visualization/{id}/'
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def form_valid(self, form):
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form.instance.parameters = self.get_object().parameters
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return super(SaveAsVisualizationView, self).form_valid(form)
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def get_initial(self):
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return {
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'name': '%s %s' % (self.get_object().name, _('(Copy)'))
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}
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class VisualizationView(views.AuthorizationMixin, CubeDisplayMixin, DetailView):
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model = models.Visualization
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template_name = 'bijoe/visualization.html'
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def get_object(self):
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named_visualization = super(VisualizationView, self).get_object()
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if not hasattr(self, 'visualization'):
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self.visualization = Visualization.from_json(named_visualization.parameters)
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self.cube = self.visualization.cube
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self.warehouse = self.cube.engine
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return named_visualization
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def post(self, request, *args, **kwargs):
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named_visualization = self.get_object()
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if 'ods' in self.request.POST:
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return self.ods(self.visualization)
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form = forms.CubeForm(cube=self.cube, data=request.POST)
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if form.is_valid():
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self.visualization = Visualization.from_form(self.cube, form)
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named_visualization.parameters = self.visualization.to_json()
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if 'save' in request.POST:
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named_visualization.save()
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return self.get(request, *args, **kwargs)
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def get_context_data(self, **kwargs):
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ctx = super(VisualizationView, self).get_context_data(**kwargs)
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initial = {
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'representation': self.visualization.representation,
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'measure': self.visualization.measure.name,
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'loop': self.visualization.loop and self.visualization.loop.name,
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'drilldown_x': self.visualization.drilldown_x and self.visualization.drilldown_x.name,
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'drilldown_y': self.visualization.drilldown_y and self.visualization.drilldown_y.name,
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}
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for key, value in self.visualization.filters.items() or []:
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if isinstance(value, list):
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value = tuple(value)
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initial['filter__%s' % key] = value
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ctx['form'] = forms.CubeForm(cube=self.cube, initial=initial)
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path = reverse('visualization-iframe', args=self.args, kwargs=self.kwargs)
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signature = path + settings.SECRET_KEY
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signature = hashlib.sha1(force_bytes(signature)).hexdigest()
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path += '?signature=' + signature
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ctx['iframe_url'] = path
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return ctx
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class SignatureAuthorizationMixin(views.AuthorizationMixin):
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def authorize(self, request):
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if request.user.is_authenticated() and request.user.is_superuser:
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return True
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if 'signature' in request.GET:
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signature = request.path + settings.SECRET_KEY
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signature = hashlib.sha1(force_bytes(signature)).hexdigest()
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if request.GET['signature'] == signature:
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return True
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return False
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class VisualizationIframeView(SignatureAuthorizationMixin, VisualizationView):
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template_name = 'bijoe/cube_raw.html'
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class DeleteVisualizationView(views.AuthorizationMixin, DeleteView):
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model = models.Visualization
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template_name = 'bijoe/delete_visualization.html'
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success_url = reverse_lazy('homepage')
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class VisualizationsView(views.AuthorizationMixin, ListView):
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template_name = 'bijoe/visualizations.html'
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model = models.Visualization
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context_object_name = 'visualizations'
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paginate_by = settings.PAGE_LENGTH
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def get_queryset(self):
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return self.model.all_visualizations()
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def get_context_data(self, **kwargs):
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ctx = super(VisualizationsView, self).get_context_data(**kwargs)
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ctx['request'] = self.request
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return ctx
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class RenameVisualization(views.AuthorizationMixin, UpdateView):
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model = models.Visualization
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form_class = forms.VisualizationForm
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template_name = 'bijoe/rename_visualization.html'
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success_url = '/visualization/{id}/'
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class VisualizationsJSONView(MultipleObjectMixin, View):
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model = models.Visualization
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def get(self, request, *args, **kwargs):
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if not request.user.is_authenticated() or not request.user.is_superuser:
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known_services = getattr(settings, 'KNOWN_SERVICES', [])
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if known_services:
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key = None
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for l in known_services.itervalues():
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for service in l.itervalues():
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if service['verif_orig'] == request.GET.get('orig', ''):
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key = service['secret']
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if key is None or not signature.check_query(request.META['QUERY_STRING'], key):
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raise PermissionDenied('signature is missing or wrong')
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data = []
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for visualization in self.get_queryset():
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path = reverse('visualization-iframe', kwargs={'pk': visualization.pk})
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sig = path + settings.SECRET_KEY
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sig = hashlib.sha1(force_bytes(sig)).hexdigest()
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path += '?signature=' + sig
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data_uri = reverse('visualization-json', kwargs={'pk': visualization.pk})
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data.append({
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'name': visualization.name,
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'slug': visualization.slug,
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'path': request.build_absolute_uri(path),
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'data-url': request.build_absolute_uri(data_uri),
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})
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response = HttpResponse(content_type='application/json')
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response.write(json.dumps(data))
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return response
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class CubeIframeView(CubeView):
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template_name = 'bijoe/cube_raw.html'
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class VisualizationODSView(views.AuthorizationMixin, DetailView):
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model = models.Visualization
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def get(self, request, *args, **kwargs):
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instance = self.get_object()
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visualization = Visualization.from_json(instance.parameters)
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response = HttpResponse(content_type='application/vnd.oasis.opendocument.spreadsheet')
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response['Content-Disposition'] = 'attachment; filename=%s.ods' % slugify(instance.name)
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workbook = visualization.ods()
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workbook.save(response)
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return response
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class VisualizationGeoJSONView(generics.GenericAPIView):
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permission_classes = ()
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queryset = models.Visualization.objects.all()
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def get(self, request, pk, format=None):
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instance = self.get_object()
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visualization = Visualization.from_json(instance.parameters)
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visualization.measure = visualization.cube.measures['geolocation']
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geojson = []
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for row in visualization.data():
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properties = {}
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for cell in row.dimensions:
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properties[cell.dimension.label] = '%s' % (cell,)
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points = row.measures[0].value or []
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geojson.append({
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'type': 'Feature',
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'geometry': {
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'type': 'MultiPoint',
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'coordinates': [[coord for coord in point] for point in points],
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},
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'properties': properties,
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})
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return Response(geojson)
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class VisualizationJSONView(generics.GenericAPIView):
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permission_classes = ()
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queryset = models.Visualization.objects.all()
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def get(self, request, pk, format=None):
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def cell_value(cell):
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if cell.measure.type == 'duration' and cell.value is not None:
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return cell.value.total_seconds()
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return cell.value
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def labels(axis):
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return [x.label.strip() for x in axis]
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instance = self.get_object()
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loop = []
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all_visualizations = Visualization.from_json(instance.parameters)
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for visualization in all_visualizations:
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drilldowns = visualization.drilldown
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if len(drilldowns) == 2:
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(x_axis, y_axis), grid = visualization.table_2d()
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axis = {
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'x_labels': labels(x_axis),
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'y_labels': labels(y_axis),
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}
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data = []
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for y in y_axis:
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data.append([cell_value(grid[(x.id, y.id)]) for x in x_axis])
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elif len(drilldowns) == 1:
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x_axis, grid = visualization.table_1d()
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if visualization.drilldown_x:
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axis = {'x_labels': labels(x_axis)}
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else:
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axis = {'y_labels': labels(x_axis)}
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data = [cell_value(grid[x.id]) for x in x_axis]
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elif len(drilldowns) == 0:
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data = cell_value(visualization.data()[0].measures[0])
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axis = {}
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loop.append({
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'data': data,
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'axis': axis
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})
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if not all_visualizations.loop:
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data = loop[0]['data']
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axis = loop[0]['axis']
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else:
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axis = loop[0]['axis']
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axis['loop'] = [x.label for x in all_visualizations.loop.members(all_visualizations.filters.items())]
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data = [x['data'] for x in loop]
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unit = 'seconds' if all_visualizations.measure.type == 'duration' else None
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measure = all_visualizations.measure.type
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return Response({
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'data': data,
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'axis': axis,
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'format': '1',
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'unit': unit, # legacy, prefer measure.
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'measure': measure,
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})
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class ExportVisualizationView(views.AuthorizationMixin, DetailView):
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model = models.Visualization
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def get(self, request, *args, **kwargs):
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response = HttpResponse(content_type='application/json')
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json.dump({'visualizations': [self.get_object().export_json()]}, response, indent=2)
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return response
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class VisualizationsImportView(views.AuthorizationMixin, FormView):
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form_class = forms.VisualizationsImportForm
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template_name = 'bijoe/visualizations_import.html'
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success_url = reverse_lazy('homepage')
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def form_valid(self, form):
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try:
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visualizations_json = json.loads(
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force_text(self.request.FILES['visualizations_json'].read()))
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except ValueError:
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form.add_error('visualizations_json', _('File is not in the expected JSON format.'))
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return self.form_invalid(form)
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results = import_site(visualizations_json)
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if results.get('created') == 0 and results.get('updated') == 0:
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messages.info(self.request, _('No visualizations were found.'))
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else:
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if results.get('created') == 0:
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message1 = _('No visualization created.')
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else:
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message1 = ungettext(
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'A visualization has been created.',
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'%(count)d visualizations have been created.',
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results['created']) % {'count': results['created']}
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if results.get('updated') == 0:
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message2 = _('No visualization updated.')
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else:
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message2 = ungettext(
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'A visualization has been updated.',
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'%(count)d visualizations have been updated.',
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results['updated']) % {'count': results['updated']}
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messages.info(self.request, u'%s %s' % (message1, message2))
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return super(VisualizationsImportView, self).form_valid(form)
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class VisualizationsExportView(views.AuthorizationMixin, View):
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def get(self, request, *args, **kwargs):
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response = HttpResponse(content_type='application/json')
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json.dump(export_site(), response, indent=2)
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return response
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warehouse = WarehouseView.as_view()
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cube = CubeView.as_view()
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cube_iframe = xframe_options_exempt(CubeIframeView.as_view())
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visualizations = VisualizationsView.as_view()
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visualizations_json = VisualizationsJSONView.as_view()
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create_visualization = CreateVisualizationView.as_view()
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delete_visualization = DeleteVisualizationView.as_view()
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rename_visualization = RenameVisualization.as_view()
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export_visualization = ExportVisualizationView.as_view()
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save_as_visualization = SaveAsVisualizationView.as_view()
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visualization = VisualizationView.as_view()
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visualization_iframe = xframe_options_exempt(VisualizationIframeView.as_view())
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visualization_geojson = VisualizationGeoJSONView.as_view()
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visualization_ods = VisualizationODSView.as_view()
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visualization_json = VisualizationJSONView.as_view()
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visualizations_import = VisualizationsImportView.as_view()
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visualizations_export = VisualizationsExportView.as_view()
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cube_iframe.mellon_no_passive = True
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visualization_iframe.mellon_no_passive = True
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