Werk #19285: Fix Azure usage details crash for missing or empty ResourceType

Component

Checks & agents

Title

Fix Azure usage details crash for missing or empty ResourceType

Date

May 15, 2026

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.6.0b1 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.5.0p4	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.4.0p30	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

Previously, the Azure usage details check crashed with a KeyError when the Azure API returned a cost entry without a ResourceType field, or produced incorrectly named services when ResourceType was an empty or whitespace-only string.

The check now handles all these cases gracefully. Entries with a missing, empty, or whitespace-only ResourceType are grouped under the service Azure/Costs Unattributed instead of causing an error.

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