From 074010fc4d98c37891133c4863039a125dd17d7e Mon Sep 17 00:00:00 2001
From: Akash LM <akashnihas@gmail.com>
Date: Tue, 7 Nov 2023 09:20:44 +0530
Subject: [PATCH] Add postgresql as a dependency

---
 charts/grafana/Chart.yaml               |  7 ++++-
 charts/grafana/templates/_pod.tpl       | 10 +++++++
 charts/grafana/templates/configmap.yaml | 10 +++++++
 charts/grafana/values.yaml              | 37 +++++++++++++++++++++++++
 4 files changed, 63 insertions(+), 1 deletion(-)

diff --git a/charts/grafana/Chart.yaml b/charts/grafana/Chart.yaml
index 72b8e0f..f10beb8 100644
--- a/charts/grafana/Chart.yaml
+++ b/charts/grafana/Chart.yaml
@@ -22,4 +22,9 @@ name: grafana
 sources:
 - https://github.com/grafana/grafana
 type: application
-version: 1.0.3
+version: 1.0.4
+dependencies:
+  - name: postgresql
+    condition: postgresql.enabled
+    version: 1.0.0
+    repository: https://kube-tarian.github.io/helmrepo-supporting-tools/
diff --git a/charts/grafana/templates/_pod.tpl b/charts/grafana/templates/_pod.tpl
index 5f35d27..19c6a0d 100644
--- a/charts/grafana/templates/_pod.tpl
+++ b/charts/grafana/templates/_pod.tpl
@@ -381,6 +381,11 @@ containers:
       - name: config
         mountPath: "/etc/grafana/grafana.ini"
         subPath: grafana.ini
+      {{- if .Values.postgresql.enabled }}
+      - name: {{ .Values.database.secretMount.name }}
+        mountPath: {{ .Values.database.secretMount.mountPath }}
+        readOnly: {{ .Values.database.secretMount.readOnly }}
+      {{- end }}
       {{- if .Values.ldap.enabled }}
       - name: ldap
         mountPath: "/etc/grafana/ldap.toml"
@@ -605,6 +610,11 @@ volumes:
       name: {{ tpl $name $root }}
     {{- end }}
   {{- end }}
+  {{- if .Values.postgresql.enabled }}
+  - name: {{ .Values.database.secretMount.name }}
+    secret:
+      secretName: {{ .Values.database.secretMount.secretName }}
+  {{- end }}
   {{- if .Values.ldap.enabled }}
   - name: ldap
     secret:
diff --git a/charts/grafana/templates/configmap.yaml b/charts/grafana/templates/configmap.yaml
index c72219f..e449a6a 100644
--- a/charts/grafana/templates/configmap.yaml
+++ b/charts/grafana/templates/configmap.yaml
@@ -14,6 +14,16 @@ data:
   plugins: {{ join "," .Values.plugins }}
 {{- end }}
   grafana.ini: |
+{{- if .Values.postgresql.enabled }}
+    [database]
+    enabled = {{ .Values.postgresql.enabled }}
+    type = {{ .Values.database.type }}
+    host = {{ .Values.database.host }}
+    name = {{ .Values.database.name }}
+    ssl_mode = {{ .Values.database.ssl_mode }}
+    user = {{ .Values.database.user }}
+    password = {{ .Values.database.password }}
+{{- end }}
 {{- range $key, $value := index .Values "grafana.ini" }}
     [{{ $key }}]
     {{- range $elem, $elemVal := $value }}
diff --git a/charts/grafana/values.yaml b/charts/grafana/values.yaml
index 72d1d79..349547a 100644
--- a/charts/grafana/values.yaml
+++ b/charts/grafana/values.yaml
@@ -876,3 +876,40 @@ extraObjects: []
   #     data:
   #       - key: grafana-admin-password
   #         name: adminPassword
+
+postgresql:
+  enabled: false
+  auth:
+    ## @param auth.enablePostgresUser Assign a password to the "postgres" admin user. Otherwise, remote access will be blocked for this user
+    ##
+    enablePostgresUser: true
+    ## @param auth.postgresPassword Password for the "postgres" admin user. Ignored if `auth.existingSecret` is provided
+    ##
+    postgresPassword: ""
+    ## @param auth.username Name for a custom user to create
+    ##
+    username: ""
+    ## @param auth.password Password for the custom user to create. Ignored if `auth.existingSecret` is provided
+    ##
+    password: ""
+    ## @param auth.database Name for a custom database to create
+    ##
+    database: ""
+    ## @param auth.existingSecret Name of existing secret to use for PostgreSQL credentials. `auth.postgresPassword`, `auth.password`, and `auth.replicationPassword` will be ignored and picked up from this secret. The secret might also contains the key `ldap-password` if LDAP is enabled. `ldap.bind_password` will be ignored and picked from this secret in this case.
+    ##
+    existingSecret: ""
+  metrics:
+    enabled: false 
+
+database: 
+  type: postgres
+  host: grafana-postgresql:5432
+  name: postgres
+  ssl_mode: disable
+  user: postgres
+  password: $__file{/etc/secrets/postgresql/postgres-password}
+  secretMount:
+    name: postgresql-mount
+    mountPath: /etc/secrets/postgresql
+    secretName: grafana-postgresql
+    readOnly: true
\ No newline at end of file