feature: add service sessionAffinity (#34)

Author: shcherbak

charts/pgbouncer/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 name: pgbouncer
 description: A Helm chart for deploying PgBouncer, a PostgreSQL connection pooler, on Kubernetes
 type: application
-version: 4.0.2
+version: 4.0.3
 appVersion: 1.24.1
 kubeVersion: ">= 1.31.0-0"
 icon: https://icoretech.github.io/helm/charts/pgbouncer/logo.png

charts/pgbouncer/templates/service.yaml

@@ -21,3 +21,9 @@ spec:
       name: psql
   selector:
     {{- include "pgbouncer.selectorLabels" . | nindent 4 }}
+  {{- if .Values.service.sessionAffinity }}
+  sessionAffinity: {{ .Values.service.sessionAffinity }}
+  {{- end }}
+  {{- if .Values.service.sessionAffinityConfig }}
+  sessionAffinityConfig: {{ toYaml .Values.service.sessionAffinityConfig | nindent 4 }}
+  {{- end }}

charts/pgbouncer/values.yaml

@@ -60,6 +60,14 @@ service:
   nodePort:
   # -- Internal traffic policy for the Service (Cluster or Local).
   internalTrafficPolicy: Cluster
+  # -- Session Affinity for Kubernetes service, can be "None" or "ClientIP"
+  # -- If "ClientIP", consecutive client requests will be directed to the same Pod
+  sessionAffinity: None
+  # -- sessionAffinityConfig Additional settings for the sessionAffinity
+  # sessionAffinityConfig:
+  #   clientIP:
+  #     timeoutSeconds: 180
+  sessionAffinityConfig: {}
 
 # -- Additional labels to add to each PgBouncer pod.
 podLabels: {}