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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
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*/}}

################################
## Airflow Worker KEDA Scaler
#################################
{{- $globals := deepCopy . -}}
{{- $filteredCelery := include "removeNilFields" .Values.workers.celery | fromYaml -}}
{{- $mergedWorkers := (include "workersMergeValues" (list .Values.workers $filteredCelery "" (list "kerberosInitContainer" "kerberosSidecar")) | fromYaml) -}}
{{- $_ := unset $mergedWorkers "celery" -}}
{{- $workerSets := .Values.workers.celery.sets | default list -}}
{{- if .Values.workers.celery.enableDefault -}}
  {{- $workerSets = concat (list (dict "name" "default")) $workerSets -}}
{{- end -}}
{{- range $workerSet := $workerSets -}}
  {{- $workers := (include "workersMergeValues" (list $mergedWorkers $workerSet "" list) | fromYaml) -}}
  {{- $_ := set $globals.Values "workers" $workers -}}
  {{- with $globals -}}
{{- if and .Values.workers.keda.enabled (or (contains "CeleryExecutor" .Values.executor) (contains "CeleryKubernetesExecutor" .Values.executor) ) }}
---
apiVersion: keda.sh/v1alpha1
kind: ScaledObject
metadata:
  name: {{ include "airflow.fullname" . }}-worker{{ if ne .Values.workers.name "default" }}-{{ .Values.workers.name }}{{ end }}
  labels:
    tier: airflow
    component: worker-horizontalpodautoscaler
    release: {{ .Release.Name }}
    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
    heritage: {{ .Release.Service }}
    deploymentName: {{ .Release.Name }}-worker{{ if ne .Values.workers.name "default" }}-{{ .Values.workers.name }}{{ end }}
    {{- if or .Values.labels .Values.workers.labels }}
      {{- mustMerge .Values.workers.labels .Values.labels | toYaml | nindent 4 }}
    {{- end }}
spec:
  scaleTargetRef:
    kind: {{ ternary "StatefulSet" "Deployment" .Values.workers.persistence.enabled }}
    name: {{ include "airflow.fullname" . }}-worker{{ if ne .Values.workers.name "default" }}-{{ .Values.workers.name }}{{ end }}
    envSourceContainerName: worker
  pollingInterval:  {{ .Values.workers.keda.pollingInterval }}
  cooldownPeriod: {{ .Values.workers.keda.cooldownPeriod }}
  minReplicaCount: {{ .Values.workers.keda.minReplicaCount }}
  maxReplicaCount: {{ .Values.workers.keda.maxReplicaCount }}
  {{- if .Values.workers.keda.advanced }}
  advanced: {{- toYaml .Values.workers.keda.advanced | nindent 4 }}
  {{- end }}
  triggers:
    {{- if eq .Values.data.metadataConnection.protocol "mysql" }}
    - type: "mysql"
      metadata:
        queryValue: "1"
        connectionStringFromEnv: KEDA_DB_CONN
        query: {{ tpl .Values.workers.keda.query . | quote }}
    {{- else }}
    - type: "postgresql"
      metadata:
        targetQueryValue: "1"
        {{- if and .Values.pgbouncer.enabled (not .Values.workers.keda.usePgbouncer) }}
        connectionFromEnv: KEDA_DB_CONN
        {{- else }}
        connectionFromEnv: AIRFLOW_CONN_AIRFLOW_DB
        {{- end }}
        query: {{ tpl .Values.workers.keda.query . | quote }}
    {{- end }}
{{- end }}
{{- end }}
{{- end }}
