Add multi-label support to scalesets (#4408)

charts/gha-runner-scale-set-experimental/templates/autoscalingrunnserset.yaml

@@ -83,6 +83,18 @@ spec:
   githubConfigSecret: {{ include "github-secret.name" . | quote }}
   runnerGroup: {{ .Values.scaleset.runnerGroup | quote }}
   runnerScaleSetName: {{ .Values.scaleset.name | quote }}
+  {{- if and .Values.scaleset.labels (kindIs "slice" .Values.scaleset.labels) }}
+  {{- range .Values.scaleset.labels }}
+  {{- if empty . }}
+  {{- fail "scaleset.labels contains an empty string, each label must be a non-empty string of less than 256 characters" }}
+  {{- end }}
+  {{- if ge (len .) 256 }}
+  {{- fail "scaleset.labels contains a label that is 256 characters or more, each label must be a non-empty string of less than 256 characters" }}
+  {{- end }}
+  {{- end }}
+  runnerScaleSetLabels:
+    {{- toYaml .Values.scaleset.labels | nindent 4 }}
+  {{- end }}
 
   {{- if .Values.githubServerTLS }}
   githubServerTLS:

charts/gha-runner-scale-set-experimental/tests/autoscaling_runner_set_scale_set_labels_test.yaml

@@ -0,0 +1,58 @@
+suite: "AutoscalingRunnerSet scale set labels"
+templates:
+  - autoscalingrunnserset.yaml
+tests:
+  - it: should apply scaleset labels slice as runnerScaleSetLabels
+    set:
+      scaleset.name: "test"
+      scaleset.labels:
+        - "linux"
+        - "x64"
+      auth.url: "https://github.com/org"
+      auth.githubToken: "gh_token12345"
+      controllerServiceAccount.name: "arc"
+      controllerServiceAccount.namespace: "arc-system"
+    release:
+      name: "test-name"
+      namespace: "test-namespace"
+    asserts:
+      - equal:
+          path: spec.runnerScaleSetLabels[0]
+          value: "linux"
+      - equal:
+          path: spec.runnerScaleSetLabels[1]
+          value: "x64"
+
+  - it: should fail when a scaleset label is empty
+    set:
+      scaleset.name: "test"
+      scaleset.labels:
+        - "linux"
+        - ""
+      auth.url: "https://github.com/org"
+      auth.githubToken: "gh_token12345"
+      controllerServiceAccount.name: "arc"
+      controllerServiceAccount.namespace: "arc-system"
+    release:
+      name: "test-name"
+      namespace: "test-namespace"
+    asserts:
+      - failedTemplate:
+          errorMessage: "scaleset.labels contains an empty string, each label must be a non-empty string of less than 256 characters"
+
+  - it: should fail when a scaleset label is 256 characters or more
+    set:
+      scaleset.name: "test"
+      scaleset.labels:
+        - "linux"
+        - "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
+      auth.url: "https://github.com/org"
+      auth.githubToken: "gh_token12345"
+      controllerServiceAccount.name: "arc"
+      controllerServiceAccount.namespace: "arc-system"
+    release:
+      name: "test-name"
+      namespace: "test-namespace"
+    asserts:
+      - failedTemplate:
+          errorMessage: "scaleset.labels contains a label that is 256 characters or more, each label must be a non-empty string of less than 256 characters"

charts/gha-runner-scale-set-experimental/values.yaml

@@ -5,6 +5,10 @@ scaleset:
   # Name of the scaleset
   name: ""
   runnerGroup: "default"
+  # Labels are optional list of strings that will be applied to the scaleset
+  # allowing scaleset to be selected by the listener based on the labels specified in the workflow.
+  # https://docs.github.com/en/actions/how-tos/manage-runners/self-hosted-runners/apply-labels
+  labels: []
   ## minRunners is the min number of idle runners. The target number of runners created will be
   ## calculated as a sum of minRunners and the number of jobs assigned to the scale set.
   # minRunners: 0