Added inventory page along with a navbar link.

Added inventory page showing a table similar to the "Nodes" one,
but containing any customizable set of facts.

A setting INVENTORY_FACTS has been added. It controls the list
of facts to be displayed along with a description for the header
of the table.

puppetboard/app.py

@@ -178,6 +178,61 @@ def nodes():
         stream_template('nodes.html', nodes=nodes)))
 
 
+@app.route('/inventory')
+def inventory():
+    """Fetch all (active) nodes from PuppetDB and stream a table displaying
+    those nodes along with a set of facts about them.
+
+    Downside of the streaming aproach is that since we've already sent our
+    headers we can't abort the request if we detect an error. Because of this
+    we'll end up with an empty table instead because of how yield_or_stop
+    works. Once pagination is in place we can change this but we'll need to
+    provide a search feature instead.
+    """
+
+    fact_desc  = []     # a list of fact descriptions to go
+                        # in the table header
+    fact_names = []     # a list of inventory fact names
+    factvalues = {}     # values of the facts for all the nodes
+                        # indexed by node name and fact name
+    nodedata   = {}     # a dictionary containing list of inventoried
+                        # facts indexed by node name
+    nodelist   = set()  # a set of node names
+
+    # get all the facts from PuppetDB
+    facts = puppetdb.facts()
+
+    # load the list of items/facts we want in our inventory
+    try:
+        inv_facts = app.config['INVENTORY_FACTS']
+    except KeyError:
+        inv_facts = [ ('Hostname'      ,'fqdn'              ),
+                      ('IP Address'    ,'ipaddress'         ),
+                      ('OS'            ,'lsbdistdescription'),
+                      ('Architecture'  ,'hardwaremodel'     ),
+                      ('Kernel Version','kernelrelease'     ) ]
+
+    # generate a list of descriptions and a list of fact names
+    # from the list of tuples inv_facts.
+    for description,name in inv_facts:
+        fact_desc.append(description)
+        fact_names.append(name)
+
+    # convert the json in easy to access data structure
+    for fact in facts:
+        factvalues[fact.node,fact.name] = fact.value
+        nodelist.add(fact.node)
+
+    # generate the per-host data
+    for node in nodelist:
+        nodedata[node] = []
+        for fact_name in fact_names:
+            nodedata[node].append(factvalues[node,fact_name])
+
+    return Response(stream_with_context(
+        stream_template('inventory.html', nodedata=nodedata, fact_desc=fact_desc)))
+
+
 @app.route('/node/<node_name>')
 def node(node_name):
     """Display a dashboard for a node showing as much data as we have on that

puppetboard/default_settings.py

@@ -23,3 +23,9 @@ GRAPH_FACTS = ['architecture',
                'osfamily',
                'puppetversion',
                'processorcount']
+INVENTORY_FACTS = [ ('Hostname',       'fqdn'              ),
+                    ('IP Address',     'ipaddress'         ),
+                    ('OS',             'lsbdistdescription'),
+                    ('Architecture',   'hardwaremodel'     ),
+                    ('Kernel Version', 'kernelrelease'     ),
+                    ('Puppet Version', 'puppetversion'     ), ]

puppetboard/static/js/tables.js

@@ -15,6 +15,10 @@
     sortList: [[1, 0]]
   });
 
+  $('.inventory').tablesorter({
+    sortList: [[0, 0]]
+  });
+
   $('.facts').tablesorter({
     sortList: [[0, 0]]
   });

puppetboard/templates/inventory.html

@@ -0,0 +1,37 @@
+{% extends 'layout.html' %}
+{% block content %}
+<div class="alert alert-info">
+  PuppetDB currently only returns active nodes.
+</div>
+      {% with messages = get_flashed_messages(with_categories=true) %}
+      {% if messages %}
+      {% for category, message in messages %}
+        <div class="alert alert-{{category}}">
+          {{message}}
+        </div>
+      {% endfor %}
+      {% endif %}
+      {% endwith %}
+<div class="hide" style="margin-bottom:20px">
+<input autofocus="autofocus" style="width:100%" type="text" class="filter-table input-medium search-query" placeholder="Type here to filter">
+</div>
+<table class='inventory table table-striped table-condensed'>
+  <thead>
+    <tr>
+      {% for description in fact_desc %}
+      <th>{{description}}</th>
+      {% endfor %}
+    </tr>
+  </thead>
+  <tbody class="searchable">
+    {% for nodename in nodedata %}
+    <tr>
+ 
+      {% for item in nodedata[nodename] %}
+      <td>{{item}}</td>
+      {% endfor %}
+    </tr>
+    {% endfor %}
+  </tbody>
+</table>
+{% endblock content %}

puppetboard/templates/layout.html

@@ -33,6 +33,7 @@
       ('facts', 'Facts'),
       ('reports', 'Reports'),
       ('metrics', 'Metrics'),
+      ('inventory', 'Inventory'),
       ('query', 'Query'),
       ] %}
       <a {% if endpoint == request.endpoint %} class="active item" {% else %} class="item" {% endif %}