puppetboard/app.py: pep8

puppetboard/app.py

@@ -41,6 +41,7 @@ if not isinstance(numeric_level, int):
 logging.basicConfig(level=numeric_level)
 log = logging.getLogger(__name__)
 
+
 def stream_template(template_name, **context):
     app.update_template_context(context)
     t = app.jinja_env.get_template(template_name)
@@ -48,64 +49,92 @@ def stream_template(template_name, **context):
     rv.enable_buffering(5)
     return rv
 
+
 @app.errorhandler(400)
 def bad_request(e):
     return render_template('400.html'), 400
 
+
 @app.errorhandler(403)
 def bad_request(e):
     return render_template('403.html'), 400
 
+
 @app.errorhandler(404)
 def not_found(e):
     return render_template('404.html'), 404
 
+
 @app.errorhandler(412)
 def precond_failed(e):
     """We're slightly abusing 412 to handle missing features
     depending on the API version."""
     return render_template('412.html'), 412
 
+
 @app.errorhandler(500)
 def server_error(e):
     return render_template('500.html'), 500
 
+
 @app.route('/')
 def index():
-    """This view generates the index page and displays a set of metrics and latest reports on
+    """This view generates the index page and displays a set of metrics and
-    nodes fetched from PuppetDB.
+    latest reports on nodes fetched from PuppetDB.
     """
     # TODO: Would be great if we could parallelize this somehow, doing these
     # requests in sequence is rather pointless.
-    num_nodes = get_or_abort(puppetdb.metric,
+    prefix = 'com.puppetlabs.puppetdb.query.population'
-      'com.puppetlabs.puppetdb.query.population:type=default,name=num-nodes')
+    num_nodes = get_or_abort(
-    num_resources = get_or_abort(puppetdb.metric,
+        puppetdb.metric,
-      'com.puppetlabs.puppetdb.query.population:type=default,name=num-resources')
+        "{0}{1}".format(prefix, ':type=default,name=num-nodes'))
-    avg_resources_node = get_or_abort(puppetdb.metric,
+    num_resources = get_or_abort(
-      'com.puppetlabs.puppetdb.query.population:type=default,name=avg-resources-per-node')
+        puppetdb.metric,
+        "{0}{1}".format(prefix, ':type=default,name=num-resources'))
+    avg_resources_node = get_or_abort(
+        puppetdb.metric,
+        "{0}{1}".format(prefix, ':type=default,name=avg-resources-per-node'))
     metrics = {
         'num_nodes': num_nodes['Value'],
         'num_resources': num_resources['Value'],
         'avg_resources_node': "{0:10.6f}".format(avg_resources_node['Value']),
         }
 
-    latest_event_count = puppetdb._query('aggregate-event-counts', query='["=", "latest-report?", true]', summarize_by='certname')
+    latest_event_count = puppetdb._query(
-    latest_event_count['noopskip'] = latest_event_count['noops']+latest_event_count['skips']
+        'aggregate-event-counts',
+        query='["=", "latest-report?", true]',
+        summarize_by='certname')
 
-    latest_events = puppetdb._query('event-counts', query='["=", "latest-report?", true]', summarize_by='certname')
+    latest_event_count['noopskip'] = (
+        latest_event_count['noops'] + latest_event_count['skips'])
+
+    latest_events = puppetdb._query(
+        'event-counts',
+        query='["=", "latest-report?", true]',
+        summarize_by='certname')
 
     unreported = []
+    unresponsive_window = datetime.utcnow() - (
+        timedelta(hours=app.config['UNRESPONSIVE_HOURS']))
     for node in puppetdb.nodes():
         try:
             node_last_seen = node.report_timestamp.replace(tzinfo=None)
-            if node_last_seen  < (datetime.utcnow()-timedelta(hours=app.config['UNRESPONSIVE_HOURS'])):
+            if node_last_seen < unresponsive_window:
                 delta = (datetime.utcnow() - node_last_seen)
-                node.noresponse = str(delta.days) + "d " + str(int(delta.seconds/3600)) +"h " + str(int((delta.seconds%3600)/60))+ "m"
+                node.noresponse = str(delta.days) + "d "
+                node.noresponse += str(int(delta.seconds / 3600)) + "h "
+                node.noresponse += str(int((delta.seconds % 3600) / 60)) + "m"
                 unreported.append(node)
         except AttributeError:
             unreported.append(node)
 
-    return render_template('index.html', metrics=metrics, latest_event_count=latest_event_count, latest_events=latest_events, unreported=unreported)
+    return render_template(
+        'index.html',
+        metrics=metrics,
+        latest_event_count=latest_event_count,
+        latest_events=latest_events,
+        unreported=unreported)
+
 
 @app.route('/nodes')
 def nodes():
@@ -118,19 +147,26 @@ def nodes():
     works. Once pagination is in place we can change this but we'll need to
     provide a search feature instead.
     """
-    latest_events = puppetdb._query('event-counts', query='["=", "latest-report?", true]', summarize_by='certname')
+    latest_events = puppetdb._query(
+        'event-counts',
+        query='["=", "latest-report?", true]',
+        summarize_by='certname')
     nodes = []
     for node in yield_or_stop(puppetdb.nodes()):
-        # check if node name is contained in any of the event-counts (grouped by certname)
+        # check if node name is contained in any of the
-        status = [s for s in latest_events if s['subject']['title'] == node.name]
+        # event-counts (grouped by certname)
+        status = [
+            s for s in latest_events if
+            s['subject']['title'] == node.name]
         if status:
             node.status = status[0]
         else:
             node.status = None
         nodes.append(node)
 
-    return Response(stream_with_context(stream_template('nodes.html',
+    return Response(stream_with_context(
-        nodes=nodes)))
+        stream_template('nodes.html', nodes=nodes)))
+
 
 @app.route('/node/<node_name>')
 def node(node_name):
@@ -141,24 +177,32 @@ def node(node_name):
     node = get_or_abort(puppetdb.node, node_name)
     facts = node.facts()
     reports = ten_reports(node.reports())
-    return render_template('node.html', node=node, facts=yield_or_stop(facts),
+    return render_template(
+        'node.html',
+        node=node,
+        facts=yield_or_stop(facts),
         reports=yield_or_stop(reports))
 
+
 @app.route('/reports')
 def reports():
     """Doesn't do much yet but is meant to show something like the reports of
     the last half our, something like that."""
     return render_template('reports.html')
 
+
 @app.route('/reports/<node>')
 def reports_node(node):
     """Fetches all reports for a node and processes them eventually rendering
     a table displaying those reports."""
     reports = ten_reports(yield_or_stop(
         puppetdb.reports('["=", "certname", "{0}"]'.format(node))))
-    return render_template('reports_node.html', reports=reports,
+    return render_template(
+        'reports_node.html',
+        reports=reports,
         nodename=node)
 
+
 @app.route('/report/latest/<node_name>')
 def report_latest(node_name):
     """Redirect to the latest report of a given node. This is a workaround
@@ -171,6 +215,7 @@ def report_latest(node_name):
     report = list(yield_or_stop(reports))[0]
     return redirect(url_for('report', node=node_name, report_id=report))
 
+
 @app.route('/report/<node>/<report_id>')
 def report(node, report_id):
     """Displays a single report including all the events associated with that
@@ -182,11 +227,14 @@ def report(node, report_id):
         if report.hash_ == report_id:
             events = puppetdb.events('["=", "report", "{0}"]'.format(
                 report.hash_))
-            return render_template('report.html', report=report,
+            return render_template(
+                'report.html',
+                report=report,
                 events=yield_or_stop(events))
     else:
         abort(404)
 
+
 @app.route('/facts')
 def facts():
     """Displays an alphabetical list of all facts currently known to
@@ -202,6 +250,7 @@ def facts():
     sorted_facts_dict = sorted(facts_dict.items())
     return render_template('facts.html', facts_dict=sorted_facts_dict)
 
+
 @app.route('/fact/<fact>')
 def fact(fact):
     """Fetches the specific fact from PuppetDB and displays its value per
@@ -209,10 +258,12 @@ def fact(fact):
     # we can only consume the generator once, lists can be doubly consumed
     # om nom nom
     localfacts = [f for f in yield_or_stop(puppetdb.facts(name=fact))]
-    return Response(stream_with_context(stream_template('fact.html',
+    return Response(stream_with_context(stream_template(
+        'fact.html',
         name=fact,
         facts=localfacts)))
 
+
 @app.route('/query', methods=('GET', 'POST'))
 def query():
     """Allows to execute raw, user created querries against PuppetDB. This is
@@ -223,7 +274,9 @@ def query():
     if app.config['ENABLE_QUERY']:
         form = QueryForm()
         if form.validate_on_submit():
-          result = get_or_abort(puppetdb._query, form.endpoints.data,
+            result = get_or_abort(
+                puppetdb._query,
+                form.endpoints.data,
                 query='[{0}]'.format(form.query.data))
             return render_template('query.html', form=form, result=result)
         return render_template('query.html', form=form)
@@ -231,6 +284,7 @@ def query():
         log.warn('Access to query interface disabled by administrator..')
         abort(403)
 
+
 @app.route('/metrics')
 def metrics():
     metrics = puppetdb._query('metrics', path='mbeans')
@@ -238,8 +292,12 @@ def metrics():
         metrics[key] = value.split('/')[3]
     return render_template('metrics.html', metrics=sorted(metrics.items()))
 
+
 @app.route('/metric/<metric>')
 def metric(metric):
     name = urllib.unquote(metric)
     metric = puppetdb.metric(metric)
-  return render_template('metric.html', name=name, metric=sorted(metric.items()))
+    return render_template(
+        'metric.html',
+        name=name,
+        metric=sorted(metric.items()))