feature: Added additional Unbound chart for query cache info (#6574)

* Update unbound.inc.php

* Update unbound.inc.php

* Create unbound_cache.inc.php

* Update AUTHORS.md

* Update apps.inc.php

AUTHORS.md

@@ -204,6 +204,7 @@ LibreNMS contributors:
 - Svenn D'Hert <admin at svennd.be> (svennd)
 - Dominik Bay <db@rrbone.net> (eimann)
 - Nick Peelman <nick@peelman.us> (peelman)
+- Patrick Ryon <patrick@slashdoom.com> (slashdoom)
 
 Observium was written by:
 - Adam Armstrong

html/includes/graphs/application/unbound_cache.inc.php

@@ -0,0 +1,30 @@
+<?php
+
+require 'includes/graphs/common.inc.php';
+
+$i            = 0;
+$scale_min    = 0;
+$nototal      = 1;
+$unit_text    = 'Query/s';
+$rrd_filename = rrd_name($device['hostname'], array('app', 'unbound-cache', $app['app_id']));
+$array        = array(
+    'queries',
+    'hits',
+    'misses'
+);
+
+$colours      = 'mixed';
+$rrd_list     = array();
+
+if (rrdtool_check_rrd_exists($rrd_filename)) {
+    foreach ($array as $ds) {
+        $rrd_list[$i]['filename'] = $rrd_filename;
+        $rrd_list[$i]['descr']    = strtoupper($ds);
+        $rrd_list[$i]['ds']       = $ds;
+        $i++;
+    }
+} else {
+    echo "file missing: $rrd_filename";
+}
+
+require 'includes/graphs/generic_multi_line.inc.php';

html/pages/apps.inc.php

@@ -226,6 +226,7 @@ $graphs['fbsd-nfs-client'] = array(
 
 $graphs['unbound'] = array(
     'queries',
+    'cache',
 );
 
 $graphs['bind']      = array(

html/pages/device/apps/unbound.inc.php

@@ -3,7 +3,8 @@
 global $config;
 
 $graphs = array(
-    'unbound_queries' => 'Unbound - Queries'
+    'unbound_queries' => 'Unbound - Queries',
+    'unbound_cache'   => 'Unbound - Cache'
     );
 foreach ($graphs as $key => $text) {
     $graph_type            = $key;

includes/polling/applications/unbound.inc.php

@@ -62,4 +62,18 @@ $fields = array (
     );
 $tags = compact('name', 'app_id', 'rrd_name', 'rrd_def');
 data_update($device, 'app', $tags, $fields);
+#Unbound Cache
+$rrd_name =  array('app', $name,'cache',$app_id);
+$rrd_def = RrdDefinition::make()
+    ->addDataset('queries', 'DERIVE', 0, 125000000000)
+    ->addDataset('hits', 'DERIVE', 0, 125000000000)
+    ->addDataset('misses', 'DERIVE', 0, 125000000000);
+$fields = array (
+    'queries' => $unbound['total.num.queries'],
+    'hits' => $unbound['total.num.cachehits'],
+    'misses' => $unbound['total.num.cachemiss']
+    );
+$tags = compact('name', 'app_id', 'rrd_name', 'rrd_def');
+data_update($device, 'app', $tags, $fields);
+
 unset($lines , $unbound, $rrd_name, $rrd_def, $fields, $tags);