Broken graphs with php 8.2

[BastienDurel]

After upgrading to PHP 8.2 (debian 12 default), graphs are broken (invalid data)

Each image generated has text prepended :

Deprecated:  Creation of dynamic property Icinga\Module\Graphite\Controllers\MonitoringGraphController::$backend is deprecated in /usr/share/icingaweb2/modules/graphite/library/Graphite/Web/Controller/MonitoringAwareController.php on line 47

Declaring the $backen property resolves the warning, and therefore corrects the images.

diff --git a/library/Graphite/Web/Controller/MonitoringAwareController.php b/library/Graphite/Web/Controller/MonitoringAwareController.php
index dca2ebd..59caa80 100644
--- a/library/Graphite/Web/Controller/MonitoringAwareController.php
+++ b/library/Graphite/Web/Controller/MonitoringAwareController.php
@@ -21,6 +21,7 @@ abstract class MonitoringAwareController extends Controller
 {
     /** @var bool Whether to use icingadb as the backend */
     protected $useIcingadbAsBackend = false;
+    protected $backend = null;

     /**
      * Restrict the given monitored object query for the currently authenticated user

Your Environment

• Module version (System - About): 1.2.2
• Icinga Web 2 version and modules (System - About): 2.11.4
  • icinga/icinga-php-library 0.10.1
  • icinga/icinga-php-thirdparty 0.11.0
  • monitoring 2.11.4
• Icinga 2 version (icinga2 --version): r2.13.7-1
• Operating System and version: Debian 12
• Webserver, PHP versions: apache 2, PHP 8.2.7

[nilmerg]

Will be fixed in the upcoming release.

[abma]

I've hit the same problem, this commit fixed it for me:

https://github.com/Icinga/icingaweb2-module-graphite/commit/c7abdfa0f340efe15aa2e4bcb5c2e5c084053c18

more specific the change in library/Graphite/Web/Controller/MonitoringAwareController.php:

https://github.com/Icinga/icingaweb2-module-graphite/commit/c7abdfa0f340efe15aa2e4bcb5c2e5c084053c18#diff-2e23f74bc88b6a8f91b8c06df8c63a96d0a4f790172ef09e4989eb6d997ea65f