Bug Report

Module version: 0.3.1 / 0.4.0 (present in both)

Description

ConditionRenderer::assembleExtendedInfo() throws a fatal TypeError when a condition has a null value for last_transition. This causes the Kubernetes web view to crash when
rendering conditions that have never transitioned.

Error

TypeError: Call to a member function getTimestamp() on null
in library/Kubernetes/View/ConditionRenderer.php:50

Steps to reproduce

1. Have a Kubernetes resource (e.g. a Node or Pod) with a condition where lastTransitionTime is not set or is null in the cluster.
2. Open the resource detail view in Icinga for Kubernetes Web.
3. The page fails to render.

Root cause

In library/Kubernetes/View/ConditionRenderer.php, line 50:

// Current code — crashes when last_transition is null
$info->addHtml(new TimeAgo($item->last_transition->getTimestamp()));

last_transition can be null when a condition has no transition timestamp, but there is no null check before calling getTimestamp().

Fix

if ($item->last_transition !== null) {
    $info->addHtml(new TimeAgo($item->last_transition->getTimestamp()));
}

Environment

- Icinga for Kubernetes Web: 0.3.1 / 0.4.0
- Icinga for Kubernetes daemon: 0.3.0
- IcingaWeb2: 2.12.x
- Kubernetes: GKE