Allow filter alarms with query including '/'

For example: mount_point=/
Django can't handle encoded URI correctly,
so this implementation uses base64url.

And allow filter alarms with dimensions having only key.

Change-Id: Ie23403278d4791c702abffd855cf0682510ac153

monitoring/alarms/templates/alarms/_filter.html

@@ -23,14 +23,19 @@
       var dimension = document.forms["form1"]["dimension"].value;
       var metric = document.forms["form1"]["metric"].value;
       var location = "{{ alarm_url }}";
+      var param = '';
       if (!isEmpty(metric)) {
-        location = location + "metric=" + metric;
+        param = 'metric=' + metric;
         if (!isEmpty(dimension)) {
-          location = location + ",";
+          param = param + ',';
         }
       }
       if (!isEmpty(dimension)) {
-        location = location + dimension;
+        param = param + dimension;
+      }
+      if (!isEmpty(param)) {
+        param = btoa(param).replace(/\+/g, '-').replace(/\//g, '_');
+        location = location + 'b64:' + param;
       }
       window.location = location;
     }
@@ -48,7 +53,7 @@
   <hr>
   <form method="GET" class="form-group" style="width:400px" onsubmit="sendDimensions()" name="form1">
       <h3>{% trans 'Dimension(s)' %}</h3>
-      {% trans 'Key' %}:{% trans 'Value' %}
+      {% trans 'Key' %}[={% trans 'Value' %}]
       <input class="form-control" name="dimension" placeholder="hostname=devstack, service=mysql" data-toggle="tooltip" data-placement="right" title="Example: hostname=devstack, service=mysql">
       <br />
       {% trans 'Metric Name' %}: <input class="form-control" name="metric" placeholder="http_status">

monitoring/alarms/views.py

@@ -14,6 +14,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import base64
 from datetime import timedelta
 import logging
 
@@ -157,6 +158,9 @@ class AlarmServiceView(tables.DataTableView):
                 return results
             else:
                 try:
+                    if self.service[:3] == 'b64':
+                        name, value = self.service.split(":")
+                        self.service = base64.urlsafe_b64decode(str(value))
                     results = api.monitor.alarm_list_by_dimension(self.request,
                                                                   self.service,
                                                                   page_offset,

monitoring/api/monitor.py

@@ -70,11 +70,14 @@ def alarm_list_by_dimension(request, dimensions, offset=0, limit=10000,
     dimensions = dimensions.replace(" ", "")
     dimensions = dimensions.split(",")
     for item in dimensions:
-        name, value = item.split("=")
+        if '=' in item:
-        if name == 'metric':
+            name, value = item.split('=')
-            metric = value
+            if name == 'metric':
+                metric = value
+            else:
+                dim_dict[name] = value
         else:
-            dim_dict[name] = value
+            dim_dict[item] = None
     if metric:
         result = monascaclient(request).alarms.list(offset=offset, limit=limit,
                                                 metric_dimensions=dim_dict,

monitoring/overview/views.py

@@ -14,6 +14,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import base64
 import copy
 import json
 import logging
@@ -203,9 +204,12 @@ def generate_status(request):
                     group_alarms.append(a)
             services = []
             for group, group_alarms in alarms_by_group.items():
+                name = '%s=%s' % (row['groupBy'], group)
+                # Encode as base64url to be able to include '/'
+                name = 'b64:' + base64.urlsafe_b64encode(name)
                 service = {
                     'display': group,
-                    'name': "%s=%s" % (row['groupBy'], group),
+                    'name': name,
                     'class': get_status(group_alarms)
                 }
                 service['icon'] = get_icon(service['class'])