fix: Add missing Helm helper loki.hpa.apiVersion (#12755)

Co-authored-by: J Stickler <[email protected]>
Co-authored-by: Michel Hollands <[email protected]>

Author: 3 people

production/helm/loki/CHANGELOG.md

@@ -13,6 +13,10 @@ Entries should include a reference to the pull request that introduced the chang
 
 [//]: # (<AUTOMATED_UPDATES_LOCATOR> : do not remove this line. This locator is used by the CI pipeline to automatically create a changelog entry for each new Loki release. Add other chart versions and respective changelog entries bellow this line.)
 
+## 6.4.2
+
+- [BUGFIX] Fixed helm helper functions to include missing `loki.hpa.apiVersion`  #12716
+
 ## 6.4.1
 
 - [BUGFIX] Fixes read & backend replicas settings

production/helm/loki/Chart.yaml

@@ -3,7 +3,7 @@ name: loki
 description: Helm chart for Grafana Loki in simple, scalable mode
 type: application
 appVersion: 3.0.0
-version: 6.4.1
+version: 6.4.2
 home: https://grafana.github.io/helm-charts
 sources:
   - https://github.com/grafana/loki

production/helm/loki/README.md

@@ -1,6 +1,6 @@
 # loki
 
-![Version: 6.4.1](https://img.shields.io/badge/Version-6.4.1-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 3.0.0](https://img.shields.io/badge/AppVersion-3.0.0-informational?style=flat-square)
+![Version: 6.4.2](https://img.shields.io/badge/Version-6.4.2-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 3.0.0](https://img.shields.io/badge/AppVersion-3.0.0-informational?style=flat-square)
 
 Helm chart for Grafana Loki in simple, scalable mode
 

production/helm/loki/templates/_helpers.tpl

@@ -1007,3 +1007,16 @@ Return the object store type for use with the test schema.
     filesystem
   {{- end -}}
 {{- end -}}
+
+{{/*
+Return the appropriate apiVersion for HorizontalPodAutoscaler.
+*/}}
+{{- define "loki.hpa.apiVersion" -}}
+  {{- if and (.Capabilities.APIVersions.Has "autoscaling/v2") (semverCompare ">= 1.19-0" .Capabilities.KubeVersion.Version) -}}
+      {{- print "autoscaling/v2" -}}
+  {{- else if .Capabilities.APIVersions.Has "autoscaling/v2beta2" -}}
+    {{- print "autoscaling/v2beta2" -}}
+  {{- else -}}
+    {{- print "autoscaling/v2beta1" -}}
+  {{- end -}}
+{{- end -}}