Adds hypervisor statistics to admin dashboard

Uses the existing d3 visualizations along with the hypervisor
stats API in Nova to display some useful at-a-glance information
about the utilization of your cloud.

Implements blueprint hypervisor-info

Change-Id: If71c533529a1f51d565eafb0b9b84f6ce93427c8

openstack_dashboard/api/nova.py

@@ -599,6 +599,10 @@ def hypervisor_list(request):
     return novaclient(request).hypervisors.list()
 
 
+def hypervisor_stats(request):
+    return novaclient(request).hypervisors.statistics()
+
+
 def tenant_absolute_limits(request, reserved=False):
     limits = novaclient(request).limits.get(reserved=reserved).absolute
     limits_dict = {}

openstack_dashboard/dashboards/admin/hypervisors/tables.py

@@ -17,25 +17,27 @@
 import logging
 
 from django.utils.translation import ugettext_lazy as _
+
 from horizon import tables
+from horizon.templatetags import sizeformat
 
 LOG = logging.getLogger(__name__)
 
 
 def get_memory(hypervisor):
-    return _("%s MB") % hypervisor.memory_mb
+    return sizeformat.mbformat(hypervisor.memory_mb)
 
 
 def get_memory_used(hypervisor):
-    return _("%s MB") % hypervisor.memory_mb_used
+    return sizeformat.mbformat(hypervisor.memory_mb_used)
 
 
 def get_local(hypervisor):
-    return _("%s GB") % hypervisor.local_gb
+    return sizeformat.diskgbformat(hypervisor.local_gb)
 
 
 def get_local_used(hypervisor):
-    return _("%s GB") % hypervisor.local_gb_used
+    return sizeformat.diskgbformat(hypervisor.local_gb_used)
 
 
 class AdminHypervisorsTable(tables.DataTable):

openstack_dashboard/dashboards/admin/hypervisors/templates/hypervisors/index.html

@@ -1,5 +1,6 @@
 {% extends 'base.html' %}
-{% load i18n %}
+{% load i18n horizon humanize sizeformat %}
+
 {% block title %}{% trans "Hypervisors" %}{% endblock %}
 
 {% block page_header %}
@@ -7,5 +8,28 @@
 {% endblock page_header %}
 
 {% block main %}
+<div class="quota-dynamic">
+  <h3>{% trans "Hypervisor Summary" %}</h3>
+    <div class="d3_quota_bar">
+    <div class="d3_pie_chart" data-used="{% widthratio stats.vcpus_used stats.vcpus 100 %}"></div>
+     <strong>{% trans "VCPU Usage" %} <br />
+         {% blocktrans with used=stats.vcpus_used|intcomma available=stats.vcpus|intcomma %}Used <span> {{ used }} </span> of <span> {{ available }} </span>{% endblocktrans %}
+     </strong>
+    </div>
+
+    <div class="d3_quota_bar">
+    <div class="d3_pie_chart" data-used="{% widthratio stats.memory_mb_used stats.memory_mb 100 %}"></div>
+     <strong>{% trans "Memory Usage" %} <br />
+         {% blocktrans with used=stats.memory_mb_used|mbformat available=stats.memory_mb|mbformat %}Used <span> {{ used }} </span> of <span> {{ available }} </span>{% endblocktrans %}
+     </strong>
+    </div>
+
+    <div class="d3_quota_bar">
+    <div class="d3_pie_chart" data-used="{% widthratio stats.local_gb_used stats.local_gb 100 %}"></div>
+     <strong>{% trans "Disk Usage" %} <br />
+         {% blocktrans with used=stats.local_gb_used|diskgbformat available=stats.local_gb|diskgbformat %}Used <span> {{ used }} </span> of <span> {{ available }} </span>{% endblocktrans %}
+     </strong>
+    </div>
+</div>
 {{ table.render }}
 {% endblock %}

openstack_dashboard/dashboards/admin/hypervisors/tests.py

@@ -23,10 +23,13 @@ from openstack_dashboard.test import helpers as test
 
 
 class HypervisorViewTest(test.BaseAdminViewTests):
-    @test.create_stubs({api.nova: ('hypervisor_list',)})
+    @test.create_stubs({api.nova: ('hypervisor_list',
+                                   'hypervisor_stats')})
     def test_index(self):
         hypervisors = self.hypervisors.list()
+        stats = self.hypervisors.stats
         api.nova.hypervisor_list(IsA(http.HttpRequest)).AndReturn(hypervisors)
+        api.nova.hypervisor_stats(IsA(http.HttpRequest)).AndReturn(stats)
         self.mox.ReplayAll()
 
         res = self.client.get(reverse('horizon:admin:hypervisors:index'))

openstack_dashboard/dashboards/admin/hypervisors/views.py

@@ -35,8 +35,18 @@ class AdminIndexView(tables.DataTableView):
         hypervisors = []
         try:
             hypervisors = api.nova.hypervisor_list(self.request)
-        except:
+        except Exception:
             exceptions.handle(self.request,
-                _('Unable to retrieve hypervisor list.'))
+                _('Unable to retrieve hypervisor information.'))
 
         return hypervisors
+
+    def get_context_data(self, **kwargs):
+        context = super(AdminIndexView, self).get_context_data(**kwargs)
+        try:
+            context["stats"] = api.nova.hypervisor_stats(self.request)
+        except Exception:
+            exceptions.handle(self.request,
+                _('Unable to retrieve hypervisor statistics.'))
+
+        return context

openstack_dashboard/test/test_data/nova_data.py

@@ -517,6 +517,23 @@ def data(TEST):
     )
     TEST.hypervisors.add(hypervisor_1)
 
+    TEST.hypervisors.stats = {
+        "hypervisor_statistics": {
+            "count": 5,
+            "vcpus_used": 3,
+            "local_gb_used": 15,
+            "memory_mb": 483310,
+            "current_workload": 0,
+            "vcpus": 160,
+            "running_vms": 3,
+            "free_disk_gb": 12548,
+            "disk_available_least": 12556,
+            "local_gb": 12563,
+            "free_ram_mb": 428014,
+            "memory_mb_used": 55296
+        }
+    }
+
     # Services
     service_1 = services.Service(services.ServiceManager(None),
         {