Generate fact JSON directly in python

puppetboard/app.py

@@ -78,12 +78,6 @@ def version():
     return __version__
 
 
-@app.template_filter()
-def format_attribute(obj, attr, format_str):
-    setattr(obj, attr, format_str.format(getattr(obj, attr)))
-    return obj
-
-
 def stream_template(template_name, **context):
     app.update_template_context(context)
     t = app.jinja_env.get_template(template_name)
@@ -752,18 +746,38 @@ def fact_ajax(env, node, fact, value):
 
     total = len(facts)
 
-    return render_template(
+    counts = {}
-        'fact.json.tpl',
+    json = {
-        fact=fact,
+        'draw': draw,
-        node=node,
+        'recordsTotal': total,
-        value=value,
+        'recordsFiltered': total,
-        draw=draw,
+        'data': []}
-        total=total,
+
-        total_filtered=total,
+    for fact_h in facts:
-        render_graph=render_graph,
+        line = []
-        facts=facts,
+        if not fact:
-        envs=envs,
+            line.append(fact_h.name)
-        current_env=env)
+        if not node:
+            line.append('<a href="{0}">'.format(url_for(
+                'node', env=env, node_name=fact_h.node)))
+        if not value:
+            line.append('<a href="{0}">'.format(url_for(
+                'fact', env=env, fact=fact_h.name, value=fact_h.value)))
+
+        json['data'].append(line)
+
+        if render_graph:
+            if fact_h.value not in counts:
+                counts[fact_h.value] = 0
+            counts[fact_h.value] += 1
+
+    if render_graph:
+        json['chart'] = [
+            {"label": "{0}".format(k).replace('\n', ' '),
+             "value": counts[k]}
+            for k in sorted(counts, key=lambda k: counts[k], reverse=True)]
+
+    return jsonify(json)
 
 
 @app.route('/query', methods=('GET', 'POST'),

puppetboard/templates/fact.json.tpl

@@ -1,38 +0,0 @@
-{
-  "draw": {{draw}},
-  "recordsTotal": {{total}},
-  "recordsFiltered": {{total_filtered}},
-  "data": [
-    {% for fact_h in facts -%}
-      {%- if not loop.first %},{%- endif -%}
-      [
-        {%- if not fact -%}
-          {{ fact_h.name | jsonprint }}
-          {%- if node or value %},{% endif -%}
-        {%- endif -%}
-        {%- if not node -%}
-          {% filter jsonprint %}<a href="{{ url_for('node', env=current_env, node_name=fact_h.node) }}">{{ fact_h.node }}</a>{% endfilter %}
-          {%- if not value %},{% endif -%}
-        {%- endif -%}
-        {%- if not value -%}
-          {%- if fact_h.value is mapping -%}
-            {% filter jsonprint %}<a href="{{ url_for('fact', env=current_env, fact=fact_h.name, value=fact_h.value) }}"><pre>{{ fact_h.value | jsonprint }}</pre></a>{% endfilter %}
-          {%- else -%}
-            {% filter jsonprint %}<a href="{{ url_for('fact', env=current_env, fact=fact_h.name, value=fact_h.value) }}"><pre>{{ fact_h.value }}</pre></a>{% endfilter %}
-          {%- endif -%}
-        {%- endif -%}
-      ]
-    {% endfor -%}
-  ]
-  {%- if render_graph %},
-  "chart": [
-    {% for fact_h in facts | map('format_attribute', 'value', '{0}') | groupby('value') -%}
-    {%- if not loop.first %},{%- endif -%}
-    {
-      "label": {{ fact_h.grouper | replace("\n", " ") | jsonprint }},
-      "value": {{ fact_h.list|length }}
-    }
-    {% endfor %}
-  ]
-  {% endif %}
-}

test/test_app.py

@@ -727,7 +727,7 @@ def test_fact_json_with_graph(client, mocker,
     assert 'chart' in result_json
     assert len(result_json['chart']) == 5
     # Test group_by
-    assert result_json['chart'][3]['value'] == 2
+    assert result_json['chart'][0]['value'] == 2
 
 
 def test_fact_json_without_graph(client, mocker,