DataView: Introduce method getDynamicFilterColumns()

refs #9029

modules/monitoring/library/Monitoring/Backend/Ido/Query/CustomvarQuery.php

@@ -6,7 +6,7 @@ namespace Icinga\Module\Monitoring\Backend\Ido\Query;
 class CustomvarQuery extends IdoQuery
 {
     protected $columnMap = array(
-        'customvars' => array(
+        'customvariablestatus' => array(
             'varname'  => 'cvs.varname',
             'varvalue' => 'cvs.varvalue',
             'is_json'  => 'cvs.is_json',
@@ -38,7 +38,7 @@ class CustomvarQuery extends IdoQuery
     protected function joinBaseTables()
     {
         if (version_compare($this->getIdoVersion(), '1.12.0', '<')) {
-            $this->columnMap['customvars']['is_json'] = '(0)';
+            $this->columnMap['customvariablestatus']['is_json'] = '(0)';
         }
 
         $this->select->from(
@@ -50,8 +50,29 @@ class CustomvarQuery extends IdoQuery
             array()
         );
         $this->joinedVirtualTables = array(
-            'customvars' => true,
-            'objects'    => true
+            'customvariablestatus'  => true,
+            'objects'               => true
         );
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getGroup()
+    {
+        $group = parent::getGroup();
+        if (! empty($group) && $this->ds->getDbType() === 'pgsql') {
+            foreach ($this->columnMap as $table => $columns) {
+                $pk = ($table === 'objects' ? 'cvo.' : 'cvs.') . $this->getPrimaryKeyColumn($table);
+                foreach ($columns as $alias => $_) {
+                    if (! in_array($pk, $group, true) && in_array($alias, $group, true)) {
+                        $group[] = $pk;
+                        break;
+                    }
+                }
+            }
+        }
+
+        return $group;
+    }
 }

modules/monitoring/library/Monitoring/DataView/DataView.php

@@ -191,6 +191,37 @@ abstract class DataView implements QueryInterface, SortRules, FilterColumns, Ite
         return array();
     }
 
+    /**
+     * Return all dynamic filter columns such as custom variables
+     *
+     * @return  array
+     */
+    public function getDynamicFilterColumns()
+    {
+        $columns = array();
+        if (! $this->query->allowsCustomVars()) {
+            return $columns;
+        }
+
+        $query = MonitoringBackend::instance()
+            ->select()
+            ->from('customvar', array('varname', 'object_type'))
+            ->where('is_json', 0)
+            ->where('object_type_id', array(1, 2))
+            ->getQuery()->group(array('varname', 'object_type'));
+        foreach ($query as $row) {
+            if ($row->object_type === 'host') {
+                $label = t('Host') . ' ' . ucwords(str_replace('_', ' ', $row->varname));
+                $columns[$label] = '_host_' . $row->varname;
+            } else { // $row->object_type === 'service'
+                $label = t('Service') . ' ' . ucwords(str_replace('_', ' ', $row->varname));
+                $columns[$label] = '_service_' . $row->varname;
+            }
+        }
+
+        return $columns;
+    }
+
     public function getFilter()
     {
         return $this->filter;