feat: add airflow.kubernetesPodTemplate.lifecycle value

Signed-off-by: Lawrence Menyah <[email protected]>

Author: fh-lawrence-menyah

charts/airflow/files/pod_template.kubernetes-helm-yaml

@@ -78,6 +78,10 @@ spec:
       volumeMounts:
         {{- $volumeMounts | indent 8 }}
       {{- end }}
+      {{- if .Values.airflow.kubernetesPodTemplate.lifecycle }}
+      lifecycle:
+        {{- toYaml .Values.airflow.kubernetesPodTemplate.lifecycle | nindent 8 }}
+      {{- end }}
     {{- if .Values.airflow.kubernetesPodTemplate.extraContainers }}
     {{- toYaml .Values.airflow.kubernetesPodTemplate.extraContainers | nindent 4 }}
     {{- end }}

charts/airflow/values.yaml

@@ -322,6 +322,11 @@ airflow:
     ##
     podAnnotations: {}
 
+    ## run commands after the container starts (postStart) or before the container stops (preStop)
+    ## - spec for container lifecycle
+    ##   https://kubernetes.io/docs/tasks/configure-pod-container/attach-handler-lifecycle-event/
+    lifecycle: {}
+
     ## the security context for the Pod template
     ## - spec for PodSecurityContext:
     ##   https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.20/#podsecuritycontext-v1-core