Visual Console Refactor: added the ability to connect to the metaconsole's node to a pair of models

Former-commit-id: b798747314a3ce92a2428114cda19ffa6063e3cf

pandora_console/include/rest-api/models/VisualConsole/Items/SimpleValue.php

@@ -176,15 +176,33 @@ final class SimpleValue extends Item
         global $config;
         include_once $config['homedir'].'/include/functions_graph.php';
 
-        // Get the linked agent and module Ids.
+        // Get the linked module Id.
         $linkedModule = static::extractLinkedModule($data);
         $moduleId = static::parseIntOr($linkedModule['moduleId'], null);
+        $metaconsoleId = static::parseIntOr(
+            $linkedModule['metaconsoleId'],
+            null
+        );
 
         if ($moduleId === null) {
             throw new \InvalidArgumentException('missing module Id');
         }
 
-        // TODO: Connect to a metaconsole node?
+        // Maybe connect to node.
+        $nodeConnected = false;
+        if (\is_metaconsole() === true && $metaconsoleId !== null) {
+            $nodeConnected = \metaconsole_connect(
+                null,
+                $metaconsoleId
+            ) === NOERR;
+
+            if ($nodeConnected === false) {
+                throw new \InvalidArgumentException(
+                    'error connecting to the node'
+                );
+            }
+        }
+
         // Get the formatted value.
         $value = \visual_map_get_simple_value(
             $data['type'],
@@ -192,6 +210,11 @@ final class SimpleValue extends Item
             static::extractPeriod($data)
         );
 
+        // Restore connection.
+        if ($nodeConnected === true) {
+            \metaconsole_restore_db();
+        }
+
         // Some modules are image based. Extract the base64 image if needed.
         $matches = [];
         if (\preg_match('/src=\"(data:image.*)"/', $value, $matches) === 1) {

pandora_console/include/rest-api/models/VisualConsole/Items/StaticGraph.php

@@ -147,9 +147,41 @@ final class StaticGraph extends Item
         global $config;
         include_once $config['homedir'].'/include/functions_visual_map.php';
 
+        // Get the linked module Id.
+        $linkedModule = static::extractLinkedModule($data);
+        $moduleId = static::parseIntOr($linkedModule['moduleId'], null);
+        $metaconsoleId = static::parseIntOr(
+            $linkedModule['metaconsoleId'],
+            null
+        );
+
+        if ($moduleId === null) {
+            throw new \InvalidArgumentException('missing module Id');
+        }
+
+        // Maybe connect to node.
+        $nodeConnected = false;
+        if (\is_metaconsole() === true && $metaconsoleId !== null) {
+            $nodeConnected = \metaconsole_connect(
+                null,
+                $metaconsoleId
+            ) === NOERR;
+
+            if ($nodeConnected === false) {
+                throw new \InvalidArgumentException(
+                    'error connecting to the node'
+                );
+            }
+        }
+
         // Get the img src.
         $data['statusImageSrc'] = \visual_map_get_image_status_element($data);
 
+        // Restore connection.
+        if ($nodeConnected === true) {
+            \metaconsole_restore_db();
+        }
+
         return $data;
     }