Add auto-refresh on index page

puppetboard/app.py

@@ -136,6 +136,7 @@ def index(env):
     # TODO: Would be great if we could parallelize this somehow, doing these
     # requests in sequence is rather pointless.
     prefix = 'puppetlabs.puppetdb.query.population'
+    refreshrate = app.config['REFRESH_RATE']
     num_nodes = get_or_abort(
         puppetdb.metric,
         "{0}{1}".format(prefix, ':type=default,name=num-nodes'))
@@ -193,6 +194,7 @@ def index(env):
         nodes=nodes_overview,
         stats=stats,
         envs=envs,
+        refreshrate=refreshrate,
         current_env=env
         )
 

puppetboard/default_settings.py

@@ -35,3 +35,4 @@
                     ('Architecture',   'hardwaremodel'     ),
                     ('Kernel Version', 'kernelrelease'     ),
                     ('Puppet Version', 'puppetversion'     ), ]
+REFRESH_RATE = 30

puppetboard/templates/index.html

@@ -1,6 +1,9 @@
 {% extends 'layout.html' %}
 {% import '_macros.html' as macros %}
 {% block content %}
+{% if refreshrate != 0 %}
+<meta http-equiv="refresh" content="{{refreshrate}}">
+{% endif %}
 <div class="ui vertical grid">
   <div class="four column row">
     <div class="column">