chart/templates/pgbouncer/pgbouncer-deployment.yaml

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################################
## Airflow Pgbouncer Deployment
#################################
{{- if .Values.pgbouncer.enabled }}
{{- $nodeSelector := or .Values.pgbouncer.nodeSelector .Values.nodeSelector }}
{{- $affinity := or .Values.pgbouncer.affinity .Values.affinity }}
{{- $tolerations := or .Values.pgbouncer.tolerations .Values.tolerations }}
{{- $topologySpreadConstraints := or .Values.pgbouncer.topologySpreadConstraints .Values.topologySpreadConstraints }}
{{- $revisionHistoryLimit := or .Values.pgbouncer.revisionHistoryLimit .Values.revisionHistoryLimit }}
{{- $securityContext := include "localPodSecurityContext" .Values.pgbouncer }}
{{- $containerSecurityContext := include "externalContainerSecurityContext" .Values.pgbouncer }}
{{- $containerSecurityContextMetricsExporter := include "externalContainerSecurityContext" .Values.pgbouncer.metricsExporterSidecar }}
{{- $containerLifecycleHooks := .Values.pgbouncer.containerLifecycleHooks }}
{{- $containerLifecycleHooksMetricsExporter := .Values.pgbouncer.metricsExporterSidecar.containerLifecycleHooks }}
apiVersion: apps/v1
kind: Deployment
metadata:
  name: {{ include "airflow.fullname" . }}-pgbouncer
  labels:
    tier: airflow
    component: pgbouncer
    release: {{ .Release.Name }}
    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
    heritage: {{ .Release.Service }}
    {{- with .Values.labels }}
      {{- toYaml . | nindent 4 }}
    {{- end }}
  {{- if .Values.pgbouncer.annotations }}
  annotations: {{- toYaml .Values.pgbouncer.annotations | nindent 4 }}
  {{- end }}
spec:
  replicas: {{ .Values.pgbouncer.replicas | default "1" }}
  {{- if $revisionHistoryLimit }}
  revisionHistoryLimit: {{ $revisionHistoryLimit }}
  {{- end }}
  strategy:
    rollingUpdate:
      maxSurge: 1
      maxUnavailable: 0
  selector:
    matchLabels:
      tier: airflow
      component: pgbouncer
      release: {{ .Release.Name }}
  template:
    metadata:
      labels:
        tier: airflow
        component: pgbouncer
        release: {{ .Release.Name }}
        {{- if or (.Values.labels) (.Values.pgbouncer.labels) }}
          {{- mustMerge .Values.pgbouncer.labels .Values.labels | toYaml | nindent 8 }}
        {{- end }}
      annotations:
        checksum/pgbouncer-config-secret: {{ include (print $.Template.BasePath "/secrets/pgbouncer-config-secret.yaml") . | sha256sum }}
        checksum/pgbouncer-certificates-secret: {{ include (print $.Template.BasePath "/secrets/pgbouncer-certificates-secret.yaml") . | sha256sum }}
        {{- if .Values.pgbouncer.podAnnotations }}
          {{- toYaml .Values.pgbouncer.podAnnotations | nindent 8 }}
        {{- end }}
    spec:
      {{- if .Values.pgbouncer.priorityClassName }}
      priorityClassName: {{ .Values.pgbouncer.priorityClassName }}
      {{- end }}
      nodeSelector: {{- toYaml $nodeSelector | nindent 8 }}
      affinity: {{- toYaml $affinity | nindent 8 }}
      {{- if .Values.schedulerName }}
      schedulerName: {{ .Values.schedulerName }}
      {{- end }}
      tolerations: {{- toYaml $tolerations | nindent 8 }}
      topologySpreadConstraints: {{- toYaml $topologySpreadConstraints | nindent 8 }}
      serviceAccountName: {{ include "pgbouncer.serviceAccountName" . }}
      securityContext: {{ $securityContext | nindent 8 }}
      restartPolicy: Always
      {{- if or .Values.registry.secretName .Values.registry.connection }}
      imagePullSecrets:
        - name: {{ template "registry_secret" . }}
      {{- end }}
      containers:
        - name: pgbouncer
          image: {{ template "pgbouncer_image" . }}
          imagePullPolicy: {{ .Values.images.pgbouncer.pullPolicy }}
          securityContext: {{ $containerSecurityContext | nindent 12 }}
          {{- if .Values.pgbouncer.command }}
          command: {{ tpl (toYaml .Values.pgbouncer.command) . | nindent 12 }}
          {{- end }}
          {{- if .Values.pgbouncer.args }}
          args: {{ tpl (toYaml .Values.pgbouncer.args) . | nindent 12 }}
          {{- end }}
          resources: {{- toYaml .Values.pgbouncer.resources | nindent 12 }}
          {{- with .Values.pgbouncer.env }}
          env: {{- toYaml . | nindent 12 }}
          {{- end }}
          ports:
            - name: pgbouncer
              containerPort: {{ .Values.ports.pgbouncer }}
          livenessProbe:
            tcpSocket:
              port: {{ .Values.ports.pgbouncer }}
          readinessProbe:
            tcpSocket:
              port: {{ .Values.ports.pgbouncer }}
          {{- if or .Values.pgbouncer.mountConfigSecret .Values.pgbouncer.ssl.ca .Values.pgbouncer.ssl.cert .Values.pgbouncer.ssl.key .Values.volumeMounts .Values.pgbouncer.extraVolumeMounts }}
          volumeMounts:
            {{- if .Values.pgbouncer.mountConfigSecret }}
            - name: pgbouncer-config
              subPath: pgbouncer.ini
              mountPath: /etc/pgbouncer/pgbouncer.ini
              readOnly: true
            - name: pgbouncer-config
              subPath: users.txt
              mountPath: /etc/pgbouncer/users.txt
              readOnly: true
            {{- end}}
            {{- if .Values.pgbouncer.ssl.ca }}
            - name: pgbouncer-certificates
              subPath: root.crt
              mountPath: /etc/pgbouncer/root.crt
              readOnly: true
            {{- end }}
            {{- if .Values.pgbouncer.ssl.cert }}
            - name: pgbouncer-certificates
              subPath: server.crt
              mountPath: /etc/pgbouncer/server.crt
              readOnly: true
            {{- end }}
            {{- if .Values.pgbouncer.ssl.key }}
            - name: pgbouncer-certificates
              subPath: server.key
              mountPath: /etc/pgbouncer/server.key
              readOnly: true
            {{- end }}
            {{- if .Values.volumeMounts }}
              {{- toYaml .Values.volumeMounts | nindent 12 }}
            {{- end }}
            {{- if .Values.pgbouncer.extraVolumeMounts }}
              {{- tpl (toYaml .Values.pgbouncer.extraVolumeMounts) . | nindent 12 }}
            {{- end }}
          {{- end}}
          {{- if $containerLifecycleHooks }}
          lifecycle: {{- tpl (toYaml $containerLifecycleHooks) . | nindent 12 }}
          {{- end }}
        - name: metrics-exporter
          resources: {{- toYaml .Values.pgbouncer.metricsExporterSidecar.resources | nindent 12 }}
          image: {{ template "pgbouncer_exporter_image" . }}
          imagePullPolicy: {{ .Values.images.pgbouncerExporter.pullPolicy }}
          securityContext: {{ $containerSecurityContextMetricsExporter | nindent 12 }}
          env:
            - name: DATABASE_URL
              valueFrom:
                secretKeyRef:
                  name: {{ template "pgbouncer_stats_secret" . }}
                  {{- if (and .Values.pgbouncer.metricsExporterSidecar.statsSecretName .Values.pgbouncer.metricsExporterSidecar.statsSecretKey) }}
                  key: {{ .Values.pgbouncer.metricsExporterSidecar.statsSecretKey }}
                  {{- else }}
                  key: "connection"
                  {{- end }}
          ports:
            - name: metrics
              containerPort: {{ .Values.ports.pgbouncerScrape }}
          livenessProbe:
            exec:
              command:
                - pgbouncer_exporter
                - health
            initialDelaySeconds: {{ .Values.pgbouncer.metricsExporterSidecar.livenessProbe.initialDelaySeconds }}
            periodSeconds: {{ .Values.pgbouncer.metricsExporterSidecar.livenessProbe.periodSeconds }}
            timeoutSeconds: {{ .Values.pgbouncer.metricsExporterSidecar.livenessProbe.timeoutSeconds }}
          readinessProbe:
            exec:
              command:
                - pgbouncer_exporter
                - health
            initialDelaySeconds: {{ .Values.pgbouncer.metricsExporterSidecar.readinessProbe.initialDelaySeconds }}
            periodSeconds: {{ .Values.pgbouncer.metricsExporterSidecar.readinessProbe.periodSeconds }}
            timeoutSeconds: {{ .Values.pgbouncer.metricsExporterSidecar.readinessProbe.timeoutSeconds }}
          {{- if $containerLifecycleHooksMetricsExporter }}
          lifecycle: {{- tpl (toYaml $containerLifecycleHooksMetricsExporter) . | nindent 12 }}
          {{- end }}
          {{- if .Values.pgbouncer.metricsExporterSidecar.extraVolumeMounts }}
          volumeMounts:
            {{- tpl (toYaml .Values.pgbouncer.metricsExporterSidecar.extraVolumeMounts) . | nindent 12 }}
          {{- end}}
        {{- if .Values.pgbouncer.extraContainers }}
          {{- tpl (toYaml .Values.pgbouncer.extraContainers) . | nindent 8 }}
        {{- end }}
      {{- if or .Values.pgbouncer.mountConfigSecret .Values.pgbouncer.ssl.ca .Values.pgbouncer.ssl.cert .Values.pgbouncer.ssl.key .Values.volumes .Values.pgbouncer.extraVolumes }}
      volumes:
        {{- if .Values.pgbouncer.mountConfigSecret }}
        - name: pgbouncer-config
          secret:
            secretName: {{ template "pgbouncer_config_secret" . }}
        {{- end}}
        {{- if or .Values.pgbouncer.ssl.ca .Values.pgbouncer.ssl.cert .Values.pgbouncer.ssl.key }}
        - name: pgbouncer-certificates
          secret:
            secretName: {{ template "pgbouncer_certificates_secret" . }}
        {{- end }}
        {{- if .Values.volumes }}
          {{- toYaml .Values.volumes | nindent 8 }}
        {{- end }}
        {{- if .Values.pgbouncer.extraVolumes }}
          {{- tpl (toYaml .Values.pgbouncer.extraVolumes) . | nindent 8 }}
        {{- end }}
      {{- end }}
{{- end }}