Check for existence of custom variable in the object before storing it

library/Director/Objects/IcingaObject.php

@@ -3058,6 +3058,11 @@ abstract class IcingaObject extends DbObject implements IcingaConfigRenderer
         return $this->templateTree()->listAncestorIdsFor($this);
     }
 
+    public function listAncestorUuIds()
+    {
+        return $this->templateTree()->listAncestorUuIdsFor($this);
+    }
+
     protected function templateTree()
     {
         return $this->templates()->tree();

library/Director/Resolver/TemplateTree.php

@@ -17,6 +17,8 @@ class TemplateTree
 
     protected $parents;
 
+    protected $parentsUuids;
+
     protected $children;
 
     protected $rootNodes;
@@ -29,6 +31,8 @@ class TemplateTree
 
     protected $names;
 
+    protected $uuids;
+
     protected $templateNameToId;
 
     public function __construct($type, Db $connection)
@@ -111,6 +115,11 @@ class TemplateTree
         return array_keys($this->getAncestorsFor($object));
     }
 
+    public function listAncestorUuIdsFor(IcingaObject $object)
+    {
+        return $this->getAncestorsUuidsFor($object);
+    }
+
     public function listChildIdsFor(IcingaObject $object)
     {
         return array_keys($this->getChildrenFor($object));
@@ -148,6 +157,19 @@ class TemplateTree
         }
     }
 
+    public function getAncestorsUuidsFor(IcingaObject $object)
+    {
+        if (
+            $object->hasBeenModified()
+            && $object->gotImports()
+            && $object->imports()->hasBeenModified()
+        ) {
+            return $this->getAncestorsUuidsForUnstoredObject($object);
+        } else {
+            return $this->getParentsUuidsById($object->getProperty('id'));
+        }
+    }
+
     protected function getAncestorsForUnstoredObject(IcingaObject $object)
     {
         $this->requireTree();
@@ -183,6 +205,36 @@ class TemplateTree
         return $ancestors;
     }
 
+    protected function getAncestorsUuidsForUnstoredObject(IcingaObject $object)
+    {
+        $this->requireTree();
+        $ancestors = [];
+        foreach ($object->imports() as $import) {
+            $name = $import->get('uuid');
+            if ($import->hasBeenLoadedFromDb()) {
+                $pid = (int) $import->get('id');
+            } else {
+                if (! array_key_exists($name, $this->templateNameToId)) {
+                    continue;
+                }
+
+                $pid = $this->templateNameToId[$name];
+            }
+
+            $this->getAncestorsUuidsById($pid, $ancestors);
+
+            $uuid = $import->get('uuid');
+            // Hint: inheritance order matters
+            if (false !== ($key = array_search($uuid, $ancestors))) {
+                unset($ancestors[$key]);
+            }
+
+            $ancestors[$pid] = $uuid;
+        }
+
+        return $ancestors;
+    }
+
     protected function requireObjectMaps()
     {
         if ($this->objectMaps === null) {
@@ -211,6 +263,27 @@ class TemplateTree
         }
     }
 
+    public function getParentsUuidsById($id)
+    {
+        $this->requireTree();
+
+        if (array_key_exists($id, $this->parentsUuids)) {
+            return $this->parentsUuids[$id];
+        }
+
+        $this->requireObjectMaps();
+        if (array_key_exists($id, $this->objectMaps)) {
+            $parentsUuids = [];
+            foreach ($this->objectMaps[$id] as $pid) {
+                $parentsUuids[$pid] = $this->uuids[$pid];
+            }
+
+            return $parentsUuids;
+        } else {
+            return [];
+        }
+    }
+
     /**
      * @param $id
      * @param $list
@@ -287,6 +360,38 @@ class TemplateTree
         return $ancestors;
     }
 
+    /**
+     * Get the ancestorUuids for the given object ID
+     *
+     * @param $id
+     * @param array $ancestors
+     * @param array $path
+     *
+     * @return array
+     */
+    public function getAncestorsUuidsById($id, &$ancestors = [], $path = [])
+    {
+        $path[$id] = true;
+        foreach ($this->getParentsUuidsById($id) as $pid => $uuid) {
+            $this->assertNotInList($pid, $path);
+            $path[$pid] = true;
+
+            $this->getAncestorsUuidsById($pid, $ancestors, $path);
+            unset($path[$pid]);
+
+            // Hint: inheritance order matters
+            if (false !== ($key = array_search($uuid, $ancestors))) {
+                unset($ancestors[$key]);
+            }
+
+            $ancestors[$pid] = $uuid;
+        }
+
+        unset($path[$id]);
+
+        return $ancestors;
+    }
+
     public function getChildrenFor(IcingaObject $object)
     {
         // can not use hasBeenLoadedFromDb() when in onStore()
@@ -386,6 +491,8 @@ class TemplateTree
         $rootNodes = [];
         $children = [];
         $names = [];
+        $parentsUuids = [];
+        $uuids = [];
         foreach ($templates as $row) {
             $id = (int) $row->id;
             $pid = (int) $row->parent_id;
@@ -403,7 +510,9 @@ class TemplateTree
             }
 
             $names[$pid] = $row->parent_name;
+            $uuids[$pid] = $row->parent_uuid;
             $parents[$id][$pid] = $row->parent_name;
+            $parentsUuids[$id][$pid] = $row->parent_uuid;
 
             if (! array_key_exists($pid, $children)) {
                 $children[$pid] = [];
@@ -413,9 +522,11 @@ class TemplateTree
         }
 
         $this->parents = $parents;
+        $this->parentsUuids = $parentsUuids;
         $this->children  = $children;
         $this->rootNodes = $rootNodes;
         $this->names = $names;
+        $this->uuids = $uuids;
         $this->templateNameToId = array_flip($names);
         Benchmark::measure(sprintf('"%s" Template Tree ready', $this->type));
     }
@@ -458,6 +569,7 @@ class TemplateTree
                 'object_type' => 'o.object_type',
                 'parent_id'   => 'p.id',
                 'parent_name' => 'p.object_name',
+                'parent_uuid' => 'p.uuid'
             ]
         )->joinLeft(
             ['i' => $table . '_inheritance'],

library/Director/RestApi/IcingaObjectHandler.php

@@ -14,6 +14,7 @@ use Icinga\Module\Director\Objects\IcingaHost;
 use Icinga\Module\Director\Objects\IcingaObject;
 use Icinga\Module\Director\Resolver\OverrideHelper;
 use InvalidArgumentException;
+use PDO;
 use RuntimeException;
 
 class IcingaObjectHandler extends RequestHandler
@@ -96,6 +97,45 @@ class IcingaObjectHandler extends RequestHandler
         }
     }
 
+    public function getCustomProperties(IcingaObject $object): array
+    {
+        if ($object->get('uuid') === null) {
+            return [];
+        }
+
+        $type = $object->getShortTableName();
+        $db = $object->getConnection();
+        $uuids = $object->listAncestorUuIds();
+        $query = $db->getDbAdapter()
+                    ->select()
+                    ->from(
+                        ['dp' => 'director_property'],
+                        [
+                            'key_name' => 'dp.key_name',
+                            'uuid' => 'dp.uuid',
+                            'value_type' => 'dp.value_type',
+                            'label' => 'dp.label',
+                            'instantiable' => 'dp.instantiable',
+                            'required' => 'iop.required',
+                            'children' => 'COUNT(cdp.uuid)'
+                        ]
+                    )
+                    ->join(['iop' => "icinga_$type" . '_property'], 'dp.uuid = iop.property_uuid', [])
+                    ->joinLeft(['cdp' => 'director_property'], 'cdp.parent_uuid = dp.uuid', [])
+                    ->where('iop.' . $type . '_uuid IN (?)', $uuids)
+                    ->group(['dp.uuid', 'dp.key_name', 'dp.value_type', 'dp.label', 'dp.instantiable', 'iop.required'])
+                    ->order('children')
+                    ->order('instantiable')
+                    ->order('key_name');
+
+        $result = [];
+        foreach ($db->getDbAdapter()->fetchAll($query, fetchMode: PDO::FETCH_ASSOC) as $row) {
+            $result[$row['key_name']] = $row;
+        }
+
+        return $result;
+    }
+
     protected function handleApiRequest()
     {
         $request = $this->request;
@@ -129,10 +169,30 @@ class IcingaObjectHandler extends RequestHandler
                 $params = $this->request->getUrl()->getParams();
                 $allowsOverrides = $params->get('allowOverrides');
                 $type = $this->getType();
-                if ($object = $this->loadOptionalObject()) {
-                    if ($this->request->getActionName() === 'variables') {
-                        $data = ['vars' => $data];
+                $object = $this->loadOptionalObject();
+                $customProperties = $this->getCustomProperties($object);
+                $overridenCustomVars = $this->getCustomVarsFromData($data);
+                if (! empty($overridenCustomVars)) {
+                    $diff = array_diff(array_keys($data), array_keys($customProperties));
+                    if (! empty($diff)) {
+                        throw new Exception(sprintf(
+                            "The custom properties (%s) are not supported by this object",
+                            implode(", ", $diff)
+                        ));
+                    }
+                }
 
+                if ($object) {
+                    if ($this->request->getActionName() === 'variables') {
+                        $diff = array_diff(array_keys($data), array_keys($customProperties));
+                        if (! empty($diff)) {
+                            throw new Exception(sprintf(
+                                "The custom properties %s are not supported by this object",
+                                implode(", ", $diff)
+                            ));
+                        }
+
+                        $data = ['vars' => $data];
                         $object->setProperties($data);
                     } elseif ($request->getMethod() === 'POST') {
                         $object->setProperties($data);
@@ -197,4 +257,21 @@ class IcingaObjectHandler extends RequestHandler
             throw new RuntimeException('Found a single service, which should have been found (and dealt with) before');
         }
     }
+
+    private function getCustomVarsFromData(array $data): array
+    {
+        $customVars = [];
+
+        foreach ($data as $key => $value) {
+            if ($key === 'vars') {
+                $customVars = $value;
+            }
+
+            if (substr($key, 0, 5) === 'vars.') {
+                $customVars[substr($key, 5)] = $value;
+            }
+        }
+
+        return $customVars;
+    }
 }