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Type:
Problem report
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Resolution: Unresolved
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Priority:
Trivial
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None
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Affects Version/s: 7.4.10rc1, 8.0.0alpha1, 8.0.0alpha2
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Component/s: Frontend (F)
When creating a graph widget and adding a large number of items, switching the widget to stacked mode causes the graph to enter a prolonged (or infinite) loading state. During this process, multiple errors are generated in the logs, and the graph fails to render correctly.
Steps to reproduce:
- Create a new graph widget.
- Add a large number of items (>50).
- Enable stacked mode.
- Apply changes / save the widget.
In some cases, it requires creating an additional widget with a large number of items for the issue to occur.
Result:
The graph enters a long or infinite loading state.
Undefined array key 608 [zabbix.php:17 -> require_once() -> ZBase->run() -> ZBase->processRequest() -> CController->run() -> Widgets\SvgGraph\Actions\WidgetView->doAction() -> Widgets\SvgGraph\Includes\CSvgGraphHelper::get() -> CSvgGraph->draw() -> CSvgGraph->calculateStackedPoints() -> CSvgGraph::calculateStackedFragment() -> CConfigFile->{closure}() in include/classes/graph/CSvgGraph.php:601]
TypeError: CSvgGraph::calculatePointOnLine(): Argument #2 ($end) must be of type array, null given, called in /home/zabbix/workspace/DEV-4761-7.5/ui/include/classes/graph/CSvgGraph.php on line 601 and defined in /home/zabbix/workspace/DEV-4761-7.5/ui/include/classes/graph/CSvgGraph.php:633
Stack trace:
#0 /home/zabbix/workspace/DEV-4761-7.5/ui/include/classes/graph/CSvgGraph.php(601): CSvgGraph::calculatePointOnLine()
#1 /home/zabbix/workspace/DEV-4761-7.5/ui/include/classes/graph/CSvgGraph.php(550): CSvgGraph::calculateStackedFragment()
#2 /home/zabbix/workspace/DEV-4761-7.5/ui/include/classes/graph/CSvgGraph.php(314): CSvgGraph->calculateStackedPoints()
#3 /home/zabbix/workspace/DEV-4761-7.5/ui/widgets/svggraph/includes/CSvgGraphHelper.php(116): CSvgGraph->draw()
#4 /home/zabbix/workspace/DEV-4761-7.5/ui/widgets/svggraph/actions/WidgetView.php(141): Widgets\SvgGraph\Includes\CSvgGraphHelper::get()
#5 /home/zabbix/workspace/DEV-4761-7.5/ui/include/classes/mvc/CController.php(582): Widgets\SvgGraph\Actions\WidgetView->doAction()
#6 /home/zabbix/workspace/DEV-4761-7.5/ui/include/classes/core/ZBase.php(653): CController->run()
#7 /home/zabbix/workspace/DEV-4761-7.5/ui/include/classes/core/ZBase.php(228): ZBase->processRequest()
#8 /home/zabbix/workspace/DEV-4761-7.5/ui/include/config.inc.php(20): ZBase->run()
#9 /home/zabbix/workspace/DEV-4761-7.5/ui/zabbix.php(17): require_once('...')
#10 {main}
Expected:
The graph should render correctly in stacked mode regardless of the number of items.
