add podLabels to helm (#3167)

# What this PR does
Add option to add additional pod labels.

## Checklist

- [ ] Unit, integration, and e2e (if applicable) tests updated
- [ ] Documentation added (or `pr:no public docs` PR label added if not
required)
- [ ] `CHANGELOG.md` updated (or `pr:no changelog` PR label added if not
required)
- [x] It is manually tested in the internal environment

---------

Co-authored-by: Marius Ensrud <marius.ensrud@skatteetaten.no>
Co-authored-by: Joey Orlando <joey.orlando@grafana.com>
Co-authored-by: Joey Orlando <joseph.t.orlando@gmail.com>
Co-authored-by: Ildar Iskhakov <Ildar.iskhakov@grafana.com>

helm/oncall/templates/celery/deployment.yaml

@@ -18,6 +18,9 @@ spec:
       {{- end }}
       labels:
         {{- include "oncall.celery.selectorLabels" . | nindent 8 }}
+        {{- if .Values.celery.podLabels }}
+        {{- toYaml .Values.celery.podLabels | nindent 8}}
+        {{- end }}
     spec:
       {{- with .Values.imagePullSecrets }}
       imagePullSecrets:

helm/oncall/templates/engine/deployment.yaml

@@ -20,6 +20,9 @@ spec:
       {{- end }}
       labels:
         {{- include "oncall.engine.selectorLabels" . | nindent 8 }}
+        {{- if .Values.engine.podLabels }}
+        {{- toYaml .Values.engine.podLabels | nindent 8}}
+        {{- end }}
     spec:
       {{- with .Values.imagePullSecrets }}
       imagePullSecrets:

helm/oncall/templates/telegram-polling/deployment.yaml

@@ -14,6 +14,9 @@ spec:
     metadata:
       labels:
         {{- include "oncall.telegramPolling.selectorLabels" . | nindent 8 }}
+        {{- if .Values.telegramPolling.podLabels }}
+        {{- toYaml .Values.telegramPolling.podLabels | nindent 8 }}
+        {{- end }}
     spec:
       {{- with .Values.imagePullSecrets }}
       imagePullSecrets:

helm/oncall/tests/podlabels_test.yaml

@@ -0,0 +1,32 @@
+suite: test podlabels for deployments
+templates:
+  - celery/deployment.yaml
+  - engine/deployment.yaml
+  - telegram-polling/deployment.yaml
+release:
+  name: oncall
+tests:
+  - it: podLabels={} -> should exclude podLabels
+    set:
+      telegramPolling:
+        enabled: true
+    asserts:
+      - notExists:
+          path: spec.template.metadata.labels.some-key
+
+  - it: podLabels -> should use custom podLabels
+    set:
+      engine:
+        podLabels:
+          some-key: some-value
+      celery:
+        podLabels:
+          some-key: some-value
+      telegramPolling:
+        enabled: true
+        podLabels:
+          some-key: some-value
+    asserts:
+      - equal:
+          path: spec.template.metadata.labels.some-key
+          value: some-value

helm/oncall/values.yaml

@@ -39,6 +39,9 @@ engine:
     #   cpu: 100m
     #   memory: 128Mi
 
+  # Labels for engine pods
+  podLabels: {}
+
   ## Deployment update strategy
   ## ref: https://kubernetes.io/docs/concepts/workloads/controllers/deployment/#strategy
   updateStrategy:
@@ -198,6 +201,9 @@ celery:
     #   cpu: 100m
     #   memory: 128Mi
 
+  # Labels for celery pods
+  podLabels: {}
+
   ## Affinity for pod assignment
   ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
   affinity: {}
@@ -257,6 +263,9 @@ telegramPolling:
     #   cpu: 100m
     #   memory: 128Mi
 
+  # Labels for telegram-polling pods
+  podLabels: {}
+
   # Extra volume mounts for the main container
   extraVolumeMounts: []
   # - name: postgres-tls