{{/*
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 distributed with this work for additional information
 regarding copyright ownership.  The ASF licenses this file
 to you under the Apache License, Version 2.0 (the
 "License"); you may not use this file except in compliance
 with the License.  You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing,
 software distributed under the License is distributed on an
 "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 KIND, either express or implied.  See the License for the
 specific language governing permissions and limitations
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*/}}

################################
## Airflow Scheduler Deployment/StatefulSet
#################################
{{- if .Values.scheduler.enabled }}
# Are we using a local executor?
{{- $local := contains "Local" .Values.executor }}
# Is persistence enabled on the _workers_?
# This is important because in $local mode, the scheduler assumes the role of the worker
{{- $persistence := .Values.workers.persistence.enabled }}
# If we're using a StatefulSet
{{- $stateful := and $local $persistence }}
# We can skip DAGs mounts on scheduler if dagProcessor is enabled, except with $local mode
{{- $dagProcessorEnabled := .Values.dagProcessor.enabled }}
{{- if eq $dagProcessorEnabled nil}}
  {{ $dagProcessorEnabled = ternary true false (semverCompare ">=3.0.0" .Values.airflowVersion) }}
{{- end }}
{{- $localOrDagProcessorDisabled := or (not $dagProcessorEnabled) $local }}
# If we're using elasticsearch or opensearch logging
{{- $remoteLogging := or .Values.elasticsearch.enabled .Values.opensearch.enabled }}
{{- $nodeSelector := or .Values.scheduler.nodeSelector .Values.nodeSelector }}
{{- $affinity := or .Values.scheduler.affinity .Values.affinity }}
{{- $tolerations := or .Values.scheduler.tolerations .Values.tolerations }}
{{- $topologySpreadConstraints := or .Values.scheduler.topologySpreadConstraints .Values.topologySpreadConstraints }}
{{- $revisionHistoryLimit := or .Values.scheduler.revisionHistoryLimit .Values.revisionHistoryLimit }}
{{- $securityContext := include "airflowPodSecurityContext" (list . .Values.scheduler) }}
{{- $containerSecurityContext := include "containerSecurityContext" (list . .Values.scheduler) }}
{{- $containerSecurityContextWaitForMigrations := include "containerSecurityContext" (list . .Values.scheduler.waitForMigrations) }}
{{- $containerSecurityContextLogGroomerSidecar := include "containerSecurityContext" (list . .Values.scheduler.logGroomerSidecar) }}
{{- $containerLifecycleHooks := or .Values.scheduler.containerLifecycleHooks .Values.containerLifecycleHooks }}
{{- $containerLifecycleHooksLogGroomerSidecar := or .Values.scheduler.logGroomerSidecar.containerLifecycleHooks .Values.containerLifecycleHooks }}
apiVersion: apps/v1
kind: {{ if $stateful }}StatefulSet{{ else }}Deployment{{ end }}
metadata:
  name: {{ include "airflow.fullname" . }}-scheduler
  labels:
    tier: airflow
    component: scheduler
    release: {{ .Release.Name }}
    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
    heritage: {{ .Release.Service }}
    executor: {{ .Values.executor | replace "," "-" | quote }}
    {{- with .Values.labels }}
      {{- toYaml . | nindent 4 }}
    {{- end }}
  {{- if .Values.scheduler.annotations }}
  annotations: {{- toYaml .Values.scheduler.annotations | nindent 4 }}
  {{- end }}
spec:
  {{- if $stateful }}
  serviceName: {{ include "airflow.fullname" . }}-scheduler
  {{- end }}
  replicas: {{ .Values.scheduler.replicas }}
  {{- if $revisionHistoryLimit }}
  revisionHistoryLimit: {{ $revisionHistoryLimit }}
  {{- end }}
  {{- if and $stateful .Values.scheduler.updateStrategy }}
  updateStrategy: {{- toYaml .Values.scheduler.updateStrategy | nindent 4 }}
  {{- end }}
  {{- if and $stateful .Values.workers.persistence.persistentVolumeClaimRetentionPolicy }}
  persistentVolumeClaimRetentionPolicy: {{- toYaml .Values.workers.persistence.persistentVolumeClaimRetentionPolicy  | nindent 4 }}
  {{- end }}
  {{- if and (not $stateful) .Values.scheduler.strategy }}
  strategy: {{- toYaml .Values.scheduler.strategy | nindent 4 }}
  {{- end }}
  selector:
    matchLabels:
      tier: airflow
      component: scheduler
      release: {{ .Release.Name }}
  template:
    metadata:
      labels:
        tier: airflow
        component: scheduler
        release: {{ .Release.Name }}
        {{- if or (.Values.labels) (.Values.scheduler.labels) }}
          {{- mustMerge .Values.scheduler.labels .Values.labels | toYaml | nindent 8 }}
        {{- end }}
      annotations:
        checksum/metadata-secret: {{ include (print $.Template.BasePath "/secrets/metadata-connection-secret.yaml") . | sha256sum }}
        checksum/result-backend-secret: {{ include (print $.Template.BasePath "/secrets/result-backend-connection-secret.yaml") . | sha256sum }}
        checksum/pgbouncer-config-secret: {{ include (print $.Template.BasePath "/secrets/pgbouncer-config-secret.yaml") . | sha256sum }}
        checksum/airflow-config: {{ include (print $.Template.BasePath "/configmaps/configmap.yaml") . | sha256sum }}
        checksum/extra-configmaps: {{ include (print $.Template.BasePath "/configmaps/extra-configmaps.yaml") . | sha256sum }}
        checksum/extra-secrets: {{ include (print $.Template.BasePath "/secrets/extra-secrets.yaml") . | sha256sum }}
        {{- if .Values.scheduler.safeToEvict }}
        cluster-autoscaler.kubernetes.io/safe-to-evict: "true"
        {{- end }}
        {{- if .Values.airflowPodAnnotations }}
          {{- toYaml .Values.airflowPodAnnotations | nindent 8 }}
        {{- end }}
        {{- if .Values.scheduler.podAnnotations }}
          {{- toYaml .Values.scheduler.podAnnotations | nindent 8 }}
        {{- end }}
    spec:
      {{- if .Values.scheduler.priorityClassName }}
      priorityClassName: {{ .Values.scheduler.priorityClassName }}
      {{- end }}
      {{- if .Values.schedulerName }}
      schedulerName: {{ .Values.schedulerName }}
      {{- end }}
      nodeSelector: {{- toYaml $nodeSelector | nindent 8 }}
      affinity:
        {{- if $affinity }}
          {{- toYaml $affinity | nindent 8 }}
        {{- else }}
        podAntiAffinity:
          preferredDuringSchedulingIgnoredDuringExecution:
          - podAffinityTerm:
              labelSelector:
                matchLabels:
                  component: scheduler
              topologyKey: kubernetes.io/hostname
            weight: 100
        {{- end }}
      tolerations: {{- toYaml $tolerations | nindent 8 }}
      topologySpreadConstraints: {{- toYaml $topologySpreadConstraints | nindent 8 }}
      restartPolicy: Always
      terminationGracePeriodSeconds: {{ .Values.scheduler.terminationGracePeriodSeconds }}
      serviceAccountName: {{ include "scheduler.serviceAccountName" . }}
      securityContext: {{ $securityContext | nindent 8 }}
      {{- if or .Values.registry.secretName .Values.registry.connection }}
      imagePullSecrets:
        - name: {{ template "registry_secret" . }}
      {{- end }}
      {{- if .Values.scheduler.hostAliases }}
      hostAliases: {{- toYaml .Values.scheduler.hostAliases | nindent 8 }}
      {{- end }}
      initContainers:
        {{- if .Values.scheduler.waitForMigrations.enabled }}
        - name: wait-for-airflow-migrations
          resources: {{- toYaml .Values.scheduler.resources | nindent 12 }}
          image: {{ template "airflow_image_for_migrations" . }}
          imagePullPolicy: {{ .Values.images.airflow.pullPolicy }}
          securityContext: {{ $containerSecurityContextWaitForMigrations | nindent 12 }}
          volumeMounts:
            {{- include "airflow_config_mount" . | nindent 12 }}
            {{- if .Values.volumeMounts }}
              {{- toYaml .Values.volumeMounts | nindent 12 }}
            {{- end }}
            {{- if .Values.scheduler.extraVolumeMounts }}
              {{- tpl (toYaml .Values.scheduler.extraVolumeMounts) . | nindent 12 }}
            {{- end }}
            {{- if or .Values.webserver.webserverConfig .Values.webserver.webserverConfigConfigMapName }}
              {{- include "airflow_webserver_config_mount" . | nindent 12 }}
            {{- end }}
          args: {{- include "wait-for-migrations-command" . | indent 10 }}
          envFrom: {{- include "custom_airflow_environment_from" . | default "\n  []" | indent 10 }}
          env:
            {{- include "custom_airflow_environment" . | indent 10 }}
            {{- include "standard_airflow_environment" . | indent 10 }}
            {{- if .Values.scheduler.waitForMigrations.env }}
              {{- tpl (toYaml .Values.scheduler.waitForMigrations.env) $ | nindent 12 }}
            {{- end }}
        {{- end }}
        {{- if and $localOrDagProcessorDisabled .Values.dags.gitSync.enabled }}
          {{- include "git_sync_container" (dict "Values" .Values "is_init" "true" "Template" .Template) | nindent 8 }}
        {{- end }}
        {{- if .Values.scheduler.extraInitContainers }}
          {{- tpl (toYaml .Values.scheduler.extraInitContainers) . | nindent 8 }}
        {{- end }}
      containers:
        # Always run the main scheduler container.
        - name: scheduler
          image: {{ template "airflow_image" . }}
          imagePullPolicy: {{ .Values.images.airflow.pullPolicy }}
          securityContext: {{ $containerSecurityContext | nindent 12 }}
          {{- if $containerLifecycleHooks }}
          lifecycle: {{- tpl (toYaml $containerLifecycleHooks) . | nindent 12 }}
          {{- end }}
          {{- if .Values.scheduler.command }}
          command: {{ tpl (toYaml .Values.scheduler.command) . | nindent 12 }}
          {{- end }}
          {{- if .Values.scheduler.args }}
          args: {{ tpl (toYaml .Values.scheduler.args) . | nindent 12 }}
          {{- end }}
          envFrom: {{- include "custom_airflow_environment_from" . | default "\n  []" | indent 10 }}
          env:
            {{- include "custom_airflow_environment" . | indent 10 }}
            {{- include "standard_airflow_environment" . | indent 10 }}
            {{- include "container_extra_envs" (list . .Values.scheduler.env) | indent 10 }}
          livenessProbe:
            initialDelaySeconds: {{ .Values.scheduler.livenessProbe.initialDelaySeconds }}
            timeoutSeconds: {{ .Values.scheduler.livenessProbe.timeoutSeconds }}
            failureThreshold: {{ .Values.scheduler.livenessProbe.failureThreshold }}
            periodSeconds: {{ .Values.scheduler.livenessProbe.periodSeconds }}
            exec:
              command:
                {{- if .Values.scheduler.livenessProbe.command }}
                  {{- toYaml .Values.scheduler.livenessProbe.command  | nindent 16 }}
                {{- else }}
                  {{- include "scheduler_liveness_check_command" . | indent 14 }}
                {{- end }}
          startupProbe:
            initialDelaySeconds: {{ .Values.scheduler.startupProbe.initialDelaySeconds }}
            timeoutSeconds: {{ .Values.scheduler.startupProbe.timeoutSeconds }}
            failureThreshold: {{ .Values.scheduler.startupProbe.failureThreshold }}
            periodSeconds: {{ .Values.scheduler.startupProbe.periodSeconds }}
            exec:
              command:
                {{- if .Values.scheduler.startupProbe.command }}
                  {{- toYaml .Values.scheduler.startupProbe.command  | nindent 16 }}
                {{- else }}
                  {{- include "scheduler_startup_check_command" . | indent 14 }}
                {{- end }}
          {{- if and $local (not $remoteLogging) }}
          # Serve logs if we're in local mode and we have neither elasticsearch nor opensearch enabled.
          ports:
            - name: worker-logs
              containerPort: {{ .Values.ports.workerLogs }}
          {{- end }}
          resources: {{- toYaml .Values.scheduler.resources | nindent 12 }}
          volumeMounts:
            {{- if semverCompare ">=1.10.12" .Values.airflowVersion }}
            - name: config
              mountPath: {{ include "airflow_pod_template_file" . }}/pod_template_file.yaml
              subPath: pod_template_file.yaml
              readOnly: true
            {{- end }}
            - name: logs
              mountPath: {{ template "airflow_logs" . }}
            {{- include "airflow_config_mount" . | nindent 12 }}
            {{- if or .Values.webserver.webserverConfig .Values.webserver.webserverConfigConfigMapName }}
              {{- include "airflow_webserver_config_mount" . | nindent 12 }}
            {{- end }}
            {{- if and $localOrDagProcessorDisabled (or .Values.dags.persistence.enabled .Values.dags.gitSync.enabled) }}
              {{- include "airflow_dags_mount" . | nindent 12 }}
            {{- end }}
            {{- if .Values.volumeMounts }}
              {{- toYaml .Values.volumeMounts | nindent 12 }}
            {{- end }}
            {{- if .Values.scheduler.extraVolumeMounts }}
              {{- tpl (toYaml .Values.scheduler.extraVolumeMounts) . | nindent 12 }}
            {{- end }}
        {{- if and $localOrDagProcessorDisabled .Values.dags.gitSync.enabled }}
          {{- include "git_sync_container" . | indent 8 }}
        {{- end }}
        {{- if .Values.scheduler.logGroomerSidecar.enabled }}
        - name: scheduler-log-groomer
          resources: {{- toYaml .Values.scheduler.logGroomerSidecar.resources | nindent 12 }}
          image: {{ template "airflow_image" . }}
          imagePullPolicy: {{ .Values.images.airflow.pullPolicy }}
          securityContext: {{ $containerSecurityContextLogGroomerSidecar | nindent 12 }}
          {{- if $containerLifecycleHooksLogGroomerSidecar  }}
          lifecycle: {{- tpl (toYaml $containerLifecycleHooksLogGroomerSidecar) . | nindent 12 }}
          {{- end }}
          {{- if .Values.scheduler.logGroomerSidecar.command }}
          command: {{ tpl (toYaml .Values.scheduler.logGroomerSidecar.command) . | nindent 12 }}
          {{- end }}
          {{- if .Values.scheduler.logGroomerSidecar.args }}
          args: {{- tpl (toYaml .Values.scheduler.logGroomerSidecar.args) . | nindent 12 }}
          {{- end }}
          env:
          {{- if .Values.scheduler.logGroomerSidecar.retentionDays }}
            - name: AIRFLOW__LOG_RETENTION_DAYS
              value: "{{ .Values.scheduler.logGroomerSidecar.retentionDays }}"
          {{- end }}
          {{- if .Values.scheduler.logGroomerSidecar.frequencyMinutes }}
            - name: AIRFLOW__LOG_CLEANUP_FREQUENCY_MINUTES
              value: "{{ .Values.scheduler.logGroomerSidecar.frequencyMinutes }}"
          {{- end }}
            - name: AIRFLOW_HOME
              value: "{{ .Values.airflowHome }}"
          {{- if .Values.scheduler.logGroomerSidecar.env }}
              {{- tpl (toYaml .Values.scheduler.logGroomerSidecar.env) $ | nindent 12 }}
          {{- end }}
          volumeMounts:
            - name: logs
              mountPath: {{ template "airflow_logs" . }}
            {{- if .Values.volumeMounts }}
              {{- toYaml .Values.volumeMounts | nindent 12 }}
            {{- end }}
            {{- if .Values.scheduler.extraVolumeMounts }}
              {{- tpl (toYaml .Values.scheduler.extraVolumeMounts) . | nindent 12 }}
            {{- end }}
            {{- if or .Values.webserver.webserverConfig .Values.webserver.webserverConfigConfigMapName }}
              {{- include "airflow_webserver_config_mount" . | nindent 12 }}
            {{- end }}
          {{- end }}
        {{- if .Values.scheduler.extraContainers }}
          {{- tpl (toYaml .Values.scheduler.extraContainers) . | nindent 8 }}
        {{- end }}
      volumes:
        - name: config
          configMap:
            name: {{ template "airflow_config" . }}
        {{- if or .Values.webserver.webserverConfig .Values.webserver.webserverConfigConfigMapName }}
        - name: webserver-config
          configMap:
            name: {{ template "airflow_webserver_config_configmap_name" . }}
        {{- end }}
        {{- if $localOrDagProcessorDisabled }}
        {{- if .Values.dags.persistence.enabled }}
        - name: dags
          persistentVolumeClaim:
            claimName: {{ template "airflow_dags_volume_claim" . }}
        {{- else if .Values.dags.gitSync.enabled }}
        - name: dags
          emptyDir: {{- toYaml (default (dict) .Values.dags.gitSync.emptyDirConfig) | nindent 12 }}
        {{- if or .Values.dags.gitSync.sshKeySecret .Values.dags.gitSync.sshKey}}
          {{- include "git_sync_ssh_key_volume" . | indent 8 }}
        {{- end }}
        {{- end }}
        {{- end }}
        {{- if .Values.volumes }}
          {{- toYaml .Values.volumes | nindent 8 }}
        {{- end }}
        {{- if .Values.scheduler.extraVolumes }}
          {{- tpl (toYaml .Values.scheduler.extraVolumes) . | nindent 8 }}
        {{- end }}
  {{- if .Values.logs.persistence.enabled }}
        - name: logs
          persistentVolumeClaim:
            claimName: {{ template "airflow_logs_volume_claim" . }}
  {{- else if not $stateful }}
        - name: logs
          emptyDir: {{- toYaml (default (dict) .Values.logs.emptyDirConfig) | nindent 12 }}
  {{- else }}
  volumeClaimTemplates:
    - apiVersion: v1
      kind: PersistentVolumeClaim
      metadata:
        name: logs
        {{- if .Values.workers.persistence.annotations }}
        annotations: {{- toYaml .Values.workers.persistence.annotations | nindent 10 }}
        {{- end }}
      spec:
      {{- if .Values.workers.persistence.storageClassName }}
        storageClassName: {{ tpl .Values.workers.persistence.storageClassName . | quote }}
      {{- end }}
        accessModes: ["ReadWriteOnce"]
        resources:
          requests:
            storage: {{ .Values.workers.persistence.size }}
  {{- end }}
  {{- end }}
