[bitnami/airflow] Support nameOverride and fullnameOverride for internal Redis® (#30081)

* fix: redis name override should work correctly

Signed-off-by: Lucas Rakotomalala <lucas.rakotomalala@yahoo.fr>

* chore: update `README.md`

Signed-off-by: Lucas Rakotomalala <lucas.rakotomalala@yahoo.fr>

* chore: update `README.md`

Signed-off-by: Lucas Rakotomalala <lucas.rakotomalala@yahoo.fr>

* Update CHANGELOG.md

Signed-off-by: Bitnami Containers <bitnami-bot@vmware.com>
Signed-off-by: Lucas Rakotomalala <lucas.rakotomalala@yahoo.fr>

* Update README.md with readme-generator-for-helm

Signed-off-by: Bitnami Containers <bitnami-bot@vmware.com>
Signed-off-by: Lucas Rakotomalala <lucas.rakotomalala@yahoo.fr>

* chore: update

Signed-off-by: Lucas Rakotomalala <lucas.rakotomalala@yahoo.fr>

* Update README.md with readme-generator-for-helm

Signed-off-by: Bitnami Containers <bitnami-bot@vmware.com>

* Update CHANGELOG.md

Signed-off-by: Bitnami Containers <bitnami-bot@vmware.com>

* Update _helpers.tpl and deployment.yaml templates

- Update _helpers.tpl to use the tpl function for externalRedis.host
- Update _helpers.tpl to conditionally use the tpl function for database.host based on postgresql.architecture
- Update deployment.yaml to use the tpl function for database.host in AIRFLOW_PROMETHEUS_DATABASE_HOST

Signed-off-by: Lucas Rakotomalala <lucas.rakotomalala@yahoo.fr>

* Update database host configuration in templates

Signed-off-by: Lucas Rakotomalala <lucas.rakotomalala@yahoo.fr>

* Update CHANGELOG.md

Signed-off-by: Bitnami Containers <bitnami-bot@vmware.com>

* Update bitnami/airflow/values.yaml

Co-authored-by: Fran Mulero <francisco-jose.mulero@broadcom.com>
Signed-off-by: Lucas <45755076+LucasRakotomalala@users.noreply.github.com>

* Revert bitnami/airflow/Chart.lock

revert partially ff117ef

Signed-off-by: Lucas Rakotomalala <lucas.rakotomalala@yahoo.fr>

* Update CHANGELOG.md

Signed-off-by: Bitnami Containers <bitnami-bot@vmware.com>

---------

Signed-off-by: Lucas Rakotomalala <lucas.rakotomalala@yahoo.fr>
Signed-off-by: Bitnami Containers <bitnami-bot@vmware.com>
Signed-off-by: Lucas <45755076+LucasRakotomalala@users.noreply.github.com>
Co-authored-by: Bitnami Containers <bitnami-bot@vmware.com>
Co-authored-by: Fran Mulero <francisco-jose.mulero@broadcom.com>

bitnami/airflow/templates/_helpers.tpl

@@ -121,12 +121,34 @@ We truncate at 63 chars because some Kubernetes name fields are limited to this
 {{- include "common.names.dependency.fullname" (dict "chartName" "postgresql" "chartValues" .Values.postgresql "context" $) -}}
 {{- end -}}
 
+{{/*
+Get the Redis® fullname
+*/}}
+{{- define "airflow.redis.fullname" -}}
+{{- include "common.names.dependency.fullname" (dict "chartName" "redis" "chartValues" .Values.redis "context" $) -}}
+{{- end -}}
+
 {{/*
 Create a default fully qualified redis name.
 We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
 */}}
-{{- define "airflow.redis.fullname" -}}
-{{- include "common.names.dependency.fullname" (dict "chartName" "redis-master" "chartValues" .Values.redis "context" $) -}}
+{{- define "airflow.redis.host" -}}
+{{- if .Values.redis.enabled -}}
+    {{- printf "%s-master" (include "airflow.redis.fullname" .) -}}
+{{- else -}}
+    {{- printf "%s" (tpl .Values.externalRedis.host $) -}}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Get the Redis® port
+*/}}
+{{- define "airflow.redis.port" -}}
+{{- if .Values.redis.enabled -}}
+    {{- print .Values.redis.master.service.ports.redis -}}
+{{- else -}}
+    {{- print .Values.externalRedis.port  -}}
+{{- end -}}
 {{- end -}}
 
 {{/*
@@ -245,7 +267,11 @@ Create the name of the service account to use
 Add environment variables to configure database values
 */}}
 {{- define "airflow.database.host" -}}
-{{- ternary (include "airflow.postgresql.fullname" .) .Values.externalDatabase.host .Values.postgresql.enabled | quote -}}
+{{- if eq .Values.postgresql.architecture "replication" }}
+{{- (ternary (include "airflow.postgresql.fullname" .) (tpl .Values.externalDatabase.host $) .Values.postgresql.enabled | printf "%s-primary") | quote -}}
+{{- else -}}
+{{- ternary (include "airflow.postgresql.fullname" .) (tpl .Values.externalDatabase.host $) .Values.postgresql.enabled | quote -}}
+{{- end -}}
 {{- end -}}
 
 {{/*
@@ -361,9 +387,9 @@ Add environment variables to configure redis values
 {{- define "airflow.configure.redis" -}}
 {{- if (not (or (eq .Values.executor "KubernetesExecutor" ) (eq .Values.executor "LocalKubernetesExecutor" ))) }}
 - name: REDIS_HOST
-  value: {{ ternary (include "airflow.redis.fullname" .) .Values.externalRedis.host .Values.redis.enabled | quote }}
+  value: {{ include "airflow.redis.host" . | quote }}
 - name: REDIS_PORT_NUMBER
-  value: {{ ternary "6379" .Values.externalRedis.port .Values.redis.enabled | quote }}
+  value: {{ include "airflow.redis.port" . | quote }}
 {{- if and (not .Values.redis.enabled) .Values.externalRedis.username }}
 - name: REDIS_USER
   value: {{ .Values.externalRedis.username | quote }}