dashboard: add NodeGraphView

fixes #82

circle/dashboard/templates/dashboard/node-detail/home.html

@@ -8,9 +8,10 @@
     </dl>
   </div>
   <div class="col-md-8">
-<img src="/static/grafikon.png" style="width:45%"/>
-<img src="/static/grafikon.png" style="width:45%"/>
-<img src="/static/grafikon.png" style="width:45%"/>
-<img src="/static/grafikon.png" style="width:45%"/>
+    {% if graphite_enabled %}
+    <img src="{% url "dashboard.views.node-graph" node.pk "cpu" "6h" %}" style="width:100%"/>
+    <img src="{% url "dashboard.views.node-graph" node.pk "memory" "6h" %}" style="width:100%"/>
+    <img src="{% url "dashboard.views.node-graph" node.pk "network" "6h" %}" style="width:100%"/>
+    {% endif %}
   </div>
 </div>

circle/dashboard/urls.py

@@ -8,7 +8,7 @@ from .views import (
     TemplateList, LeaseDetail, NodeCreate, LeaseCreate, TemplateCreate,
     FavouriteView, NodeStatus, GroupList, TemplateDelete, LeaseDelete,
     VmGraphView, TemplateAclUpdateView, GroupDetailView, GroupDelete,
-    GroupAclUpdateView, GroupUserDelete,
+    GroupAclUpdateView, GroupUserDelete, NodeGraphView
 )
 
 urlpatterns = patterns(
@@ -71,6 +71,10 @@ urlpatterns = patterns(
          r'(?P<time>[0-9]{1,2}[hdwy])$'),
         VmGraphView.as_view(),
         name='dashboard.views.vm-graph'),
+    url((r'^node/(?P<pk>\d+)/graph/(?P<metric>cpu|memory|network)/'
+         r'(?P<time>[0-9]{1,2}[hdwy])$'),
+        NodeGraphView.as_view(),
+        name='dashboard.views.node-graph'),
     url(r'^group/(?P<pk>\d+)/$', GroupDetailView.as_view(),
         name='dashboard.views.group-detail'),
     url(r'^group/(?P<pk>\d+)/acl/$', GroupAclUpdateView.as_view(),

circle/dashboard/views.py

@@ -449,6 +449,8 @@ class NodeDetailView(LoginRequiredMixin, SuperuserRequiredMixin, DetailView):
             node=self.object, parent=None
         ).order_by('-started').select_related()
         context['activities'] = na
+        context['graphite_enabled'] = (
+            NodeGraphView.get_graphite_url() is not None)
         return context
 
     def post(self, request, *args, **kwargs):
@@ -1637,3 +1639,16 @@ class VmGraphView(GraphViewBase):
 
     def get_title(self, instance, metric):
         return '%s (%s) - %s' % (instance.name, instance.vm_name, metric)
+
+
+class NodeGraphView(SuperuserRequiredMixin, GraphViewBase):
+    model = Node
+
+    def get_prefix(self, instance):
+        return 'circle.%s' % instance.name
+
+    def get_title(self, instance, metric):
+        return '%s - %s' % (instance.name, metric)
+
+    def get_object(self, request, pk):
+        return self.model.objects.get(id=pk)