Version clash between icingadb-web and icingaweb2-module-grafana causes stacktrace

Description

Version clash between icingadb-web and icingaweb2-module-grafana causes stacktrace

Abstract

A clash between very specific versions of icingadb-web and icingaweb2-module-grafana causes a stacktrace within the grafana module and for no embedded graphs to be displayed.

Scenario

Customer is upgrading from Icinga IDO database to Icinga DB.
Customer needs legacy monitoring module to continue to work in production until all icingadb-web issues can be fixed.
Due to monitoring being retained, customer was unable to upgrade further than PHP 7.2.
Due to PHP 7.2 being retained, icinga-web-grafana could not be upgraded to v2.0.3.
Due to monitoring being retained, icinga-web-grafana could not be upgraded to v2 since it does not support monitoring.
Fallback version for icinga-web-grafana is v1.4.2, known to be stable and work with both monitoring and icingadb-web.

Versions

Package	Version
`icinga2`	`v2.13.7`
`icingaweb2`	`v2.12.0`
`icingadb`	`v1.1.1`
`icingadb-web`	`v1.1.0` (broken) `v1.0.2` (works)
`icinga-module-grafana`	`v1.4.2`

Steps to reproduce

Install system with all versions above, including icingadb-web v1.1.0.
Navigate to any icingadb-web page showing a Host or Service where a Grafana graph would normally appear.
Instead of the graph appearing, the following error is shown in bold:

ErrorException in /usr/share/icingaweb2/modules/grafana/library/Grafana/ProvidedHook/Grapher.php:298 with message: Object of class DateTime could not be converted to int

Workaround

Downgrade the icingadb-web to v1.0.2.
Refresh the browser and the graph appears.

Full stacktrace

Oct 27 12:56:31 othrpeq0003 icingaweb[511076]: Failed to load legacy grapher: ErrorException in /usr/share/icingaweb2/modules/grafana/library/Grafana/ProvidedHook/Grapher.php:298 
with message: Object of class DateTime could not be converted to int
    #0 /usr/share/icingaweb2/modules/grafana/library/Grafana/ProvidedHook/Grapher.php(298): Icinga\Application\ApplicationBootstrap->Icinga\Application\{closure}(8, 'Object of class...', '/usr/share/icin...', 298, Array)
    #1 /usr/share/icingaweb2/modules/icingadb/library/Icingadb/Widget/Detail/ObjectDetail.php(468): Icinga\Module\Grafana\ProvidedHook\Grapher->getPreviewHtml(Object(Icinga\Module\Icingadb\Compat\CompatService))
    #2 /usr/share/icingaweb2/modules/icingadb/library/Icingadb/Widget/Detail/ServiceDetail.php(35): Icinga\Module\Icingadb\Widget\Detail\ObjectDetail->createExtensions()
    #3 /usr/share/icinga-php/ipl/vendor/ipl/html/src/HtmlDocument.php(344): Icinga\Module\Icingadb\Widget\Detail\ServiceDetail->assemble()
    #4 /usr/share/icinga-php/ipl/vendor/ipl/html/src/HtmlDocument.php(566): ipl\Html\HtmlDocument->ensureAssembled()
    #5 /usr/share/icinga-php/ipl/vendor/ipl/html/src/HtmlDocument.php(390): ipl\Html\HtmlDocument->render()
    #6 /usr/share/icinga-php/ipl/vendor/ipl/html/src/BaseHtmlElement.php(297): ipl\Html\HtmlDocument->renderUnwrapped()
    #7 /usr/share/icinga-php/ipl/vendor/ipl/html/src/BaseHtmlElement.php(365): ipl\Html\BaseHtmlElement->renderContent()
    #8 /usr/share/icinga-php/ipl/vendor/ipl/html/src/HtmlDocument.php(568): ipl\Html\BaseHtmlElement->renderUnwrapped()
    #9 /usr/share/icinga-php/ipl/vendor/ipl/html/src/HtmlDocument.php(390): ipl\Html\HtmlDocument->render()
    #10 /usr/share/icinga-php/ipl/vendor/ipl/html/src/HtmlDocument.php(568): ipl\Html\HtmlDocument->renderUnwrapped()
    #11 /usr/share/icinga-php/ipl/vendor/ipl/web/src/Compat/ViewRenderer.php(56): ipl\Html\HtmlDocument->render()
    #12 /usr/share/icinga-php/vendor/vendor/shardj/zf1-future/library/Zend/Controller/Action/Helper/ViewRenderer.php(970): ipl\Web\Compat\ViewRenderer->render()
    #13 /usr/share/icinga-php/vendor/vendor/shardj/zf1-future/library/Zend/Controller/Action/HelperBroker.php(277): Zend_Controller_Action_Helper_ViewRenderer->postDispatch()
    #14 /usr/share/icingaweb2/modules/icingadb/library/Icingadb/Web/Controller.php(480): Zend_Controller_Action_HelperBroker->notifyPostDispatch()
    #15 /usr/share/php/Icinga/Web/Controller/Dispatcher.php(76): Icinga\Module\Icingadb\Web\Controller->dispatch('indexAction')
    #16 /usr/share/icinga-php/vendor/vendor/shardj/zf1-future/library/Zend/Controller/Front.php(954): Icinga\Web\Controller\Dispatcher->dispatch(Object(Icinga\Web\Request), Object(Icinga\Web\Response))
    #17 /usr/share/php/Icinga/Application/Web.php(294): Zend_Controller_Front->dispatch(Object(Icinga\Web\Request), Object(Icinga\Web\Response))
    #18 /usr/share/php/Icinga/Application/webrouter.php(105): Icinga\Application\Web->dispatch()
    #19 /usr/share/icingaweb2/public/index.php(4): require_once('/usr/share/php/...')
    #20 {main}

Other environmental context

RHEL 8

Additional context

This bug is being cross-posted on:

Mikesch-mp / icingaweb2-module-grafana

Version clash between icingadb-web and icingaweb2-module-grafana causes stacktrace #327