Add support of external-secret

.github/spell-ignore-words.txt

@@ -16,3 +16,9 @@ YAML
 secret.secretName
 configMap.name
 Lifecycle
+SecretStore
+ExternalSecret
+secretKey
+1h
+1m
+1s

.github/workflows/main.yaml

@@ -82,6 +82,10 @@ jobs:
         run: |
           curl https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/main/jsonnet/prometheus-operator/podmonitors-crd.json --output /tmp/podmonitors-crd.json
           kubectl apply -f /tmp/podmonitors-crd.json
+      - name: Install external-secret CRD
+        run: |
+          curl https://raw.githubusercontent.com/external-secrets/external-secrets/main/deploy/crds/bundle.yaml --output /tmp/external-secrets-crd.yaml
+          kubectl apply -f /tmp/external-secrets-crd.yaml
 
       - name: Apply
         run: kubectl apply -f tests/expected.yaml

templates/_helpers.tpl

@@ -17,12 +17,16 @@ Create the name of the service account to use
 - name: {{ .name | quote }}
   valueFrom:
     {{ .value.type }}KeyRef:
-      {{ if and (hasKey .value "name" ) ( eq .value.name "self" ) -}}
+      {{ if and ( hasKey .value "name" ) ( eq .value.name "self" ) -}}
       {{ if .value.type | eq "configMap" -}}
       name: {{ include "common.fullname" ( dict "root" .root "service" .root.Values.configMaps ) }}
       {{ else -}}
       name: {{ include "common.fullname" ( dict "root" .root "service" .root.Values.secrets ) }}
       {{ end -}}
+      {{ else if hasPrefix "self-external-secret-" .value.name -}}
+      {{- $name := substr 21 -1 .value.name }}
+      {{- $definition := get .root.Values.externalSecrets $name }}
+      name: {{ include "common.fullname" ( dict "root" .root "service" $definition "serviceName" $name ) }}
       {{ else if and (hasKey .value "name" ) ( eq .value.name "self-metadata" ) -}}
       name: {{ include "common.fullname" ( dict "root" .root "service" .root.Values "serviceName" "metadata" ) }}
       {{ else -}}
@@ -182,13 +186,13 @@ volumes:
     secret:
       {{- if eq ( default "self" $value.secret.secretName ) "self" }}
       secretName: {{ include "common.fullname" ( dict "root" $root "service" $root.Values.secrets ) }}
-      {{- else }}
-      {{- if eq ( default "self" $value.secret.secretName ) "self-metadata" }}
-      secretName: {{ include "common.fullname" ( dict "root" $root "service" $root.Values "serviceName" "metadata" ) }}
+      {{- else if hasPrefix "self-external-secret-" $value.secret.secretName }}
+      {{- $name := substr 21 -1 $value.secret.secretName }}
+      {{- $definition := get $root.Values.externalSecrets $name }}
+      secretName: {{ include "common.fullname" ( dict "root" $root "service" $definition "serviceName" $name ) }}
       {{- else }}
       secretName: {{ $value.secret.secretName }}
       {{- end }}
-      {{- end }}
       {{- with $value.secret.items }}
       items: {{- . | toYaml | nindent 6 }}
       {{- end }}
@@ -197,6 +201,8 @@ volumes:
     configMap:
       {{- if eq ( default "self" $value.configMap.name ) "self" }}
       name: {{ include "common.fullname" ( dict "root" $root "service" $root.Values.configMaps ) }}
+      {{- else if eq ( default "self" $value.configMap.name ) "self-metadata" }}
+      name: {{ include "common.fullname" ( dict "root" $root "service" $root.Values "serviceName" "metadata" ) }}
       {{- else }}
       name: {{ $value.configMap.name }}
       {{- end }}

templates/external-secret.yaml

@@ -0,0 +1,32 @@
+{{- range $name, $definition := .Values.externalSecrets }}
+{{- if eq $definition.enabled true }}
+{{- if ( or $definition.data $definition.dataFrom ) }}
+---
+apiVersion: external-secrets.io/v1beta1
+kind: ExternalSecret
+metadata:
+  name: {{ include "common.fullname" ( dict "root" $ "service" $definition "serviceName" $name ) }}
+  {{- include "common.metadata" ( dict "root" $ "service" $definition "serviceName" $name ) | nindent 2 }}
+spec:
+  {{- with $definition.refreshInterval }}
+  refreshInterval: {{ . }}
+  {{- end }}
+  {{- with $definition.secretStoreRef }}
+  secretStoreRef: {{- toYaml . | nindent 4 }}
+  {{- end }}
+  target:
+    {{- if not ( hasKey ( default ( dict ) .target ) "name" ) }}
+    name: {{ include "common.fullname" ( dict "root" $ "service" $definition "serviceName" "external-secret" ) }}
+    {{- end }}
+    {{- with $definition.target }}
+    {{- toYaml . | nindent 4 }}
+    {{- end }}
+  {{- with $definition.dataFrom }}
+  dataFrom: {{- toYaml . | nindent 4 }}
+  {{- end }}
+  {{- with $definition.data }}
+  data: {{- include "common.dictToList" ( dict "keyName" "secretKey" "contents" . ) | nindent 4 }}
+  {{- end }}
+{{- end }}
+{{- end }}
+{{- end }}

templates/secret.yaml

@@ -1,4 +1,6 @@
 {{- with .Values.secrets }}
+{{- if .enabled }}
+{{- if .content }}
 ---
 apiVersion: v1
 kind: Secret
@@ -17,3 +19,5 @@ data:
 {{- end }}
 {{- end }}
 {{- end }}
+{{- end }}
+{{- end }}

tests/expected.yaml

@@ -658,6 +658,18 @@ spec:
             items:
             - key: testYaml
               path: test.yaml
+        - name: self-configmap-metadata
+          configMap:
+            name: custom-custom-pod-metadata
+            items:
+            - key: testYaml
+              path: test.yaml
+        - name: self-external-secret
+          secret:
+            secretName: custom-custom-pod-app
+            items:
+            - key: hostname
+              path: hostname.txt
         - name: self-secret
           secret:
             secretName: custom-custom-pod
@@ -1032,6 +1044,12 @@ spec:
                 secretKeyRef:
                   name: custom-custom-pod
                   key: "test"
+            - name: "SELF_VAULT"
+              valueFrom:
+                secretKeyRef:
+
+                  name: custom-custom-pod-app
+                  key: "hostname"
           terminationMessagePolicy: FallbackToLogsOnError
 ---
 # Source: custom-pod/templates/statefulset.yaml
@@ -1398,6 +1416,54 @@ spec:
                 port:
                   number: 8080
 ---
+# Source: custom-pod/templates/external-secret.yaml
+apiVersion: external-secrets.io/v1beta1
+kind: ExternalSecret
+metadata:
+  name: custom-custom-pod-app
+  labels:
+    helm.sh/chart: custom-pod
+    app.kubernetes.io/version: "1.0"
+    app.kubernetes.io/managed-by: Helm
+    app.kubernetes.io/name: custom-pod
+    app.kubernetes.io/instance: custom
+    app.kubernetes.io/component: app
+spec:
+  refreshInterval: 1h
+  secretStoreRef:
+    kind: SecretStore
+    name: my-secret-store
+  target:
+    name: custom-custom-pod-external-secret
+  data:
+    - secretKey: hostname
+      remoteRef:
+        key: hostname
+---
+# Source: custom-pod/templates/external-secret.yaml
+apiVersion: external-secrets.io/v1beta1
+kind: ExternalSecret
+metadata:
+  name: custom-custom-pod-global
+  labels:
+    helm.sh/chart: custom-pod
+    app.kubernetes.io/version: "1.0"
+    app.kubernetes.io/managed-by: Helm
+    app.kubernetes.io/name: custom-pod
+    app.kubernetes.io/instance: custom
+    app.kubernetes.io/component: global
+spec:
+  refreshInterval: 1h
+  secretStoreRef:
+    kind: SecretStore
+    name: my-global-secret-store
+  target:
+    name: custom-custom-pod-external-secret
+  data:
+    - secretKey: pass
+      remoteRef:
+        key: pass
+---
 # Source: custom-pod/templates/podmonitor.yaml
 apiVersion: monitoring.coreos.com/v1
 kind: PodMonitor

tests/values.yaml

@@ -41,6 +41,7 @@ dockerregistry:
       password: '1234'
 
 secrets:
+  enabled: true
   annotations:
     testAnnotation: annotation value for secrets
   content:
@@ -53,6 +54,28 @@ secrets:
       user: toto
       password: toto
 
+externalSecrets:
+  app:
+    enabled: true
+    refreshInterval: 1h
+    secretStoreRef:
+      name: my-secret-store
+      kind: SecretStore
+    data:
+      hostname:
+        remoteRef:
+          key: hostname
+  global:
+    enabled: true
+    refreshInterval: 1h
+    secretStoreRef:
+      name: my-global-secret-store
+      kind: SecretStore
+    data:
+      pass:
+        remoteRef:
+          key: pass
+
 configMaps:
   annotations:
     testAnnotation: annotation value for configmaps
@@ -198,6 +221,18 @@ services:
               path: test.yaml
       self-secret:
         secret: {}
+      self-configmap-metadata:
+        configMap:
+          name: self-metadata
+          items:
+            - key: testYaml
+              path: test.yaml
+      self-external-secret:
+        secret:
+          secretName: self-external-secret-app
+          items:
+            - key: hostname
+              path: hostname.txt
 
     service: &servicedefinition
       type: ClusterIP
@@ -508,3 +543,7 @@ services:
             type: configMap
             name: self-metadata
             key: CHART_NAME
+          SELF_VAULT:
+            type: secret
+            name: self-external-secret-app
+            key: hostname

values.md

@@ -54,14 +54,15 @@
       - **`password`** _(string, required)_: Password.
       - **`email`** _(string)_: Email.
 - **`secrets`** _(object)_: Cannot contain additional properties.
+  - **`enabled`** _(boolean)_: Enable the Secret. Default: `true`.
   - **`nameOverride`**: Refer to _[#/definitions/nameOverride](#definitions/nameOverride)_.
   - **`fullnameOverride`**: Refer to _[#/definitions/fullnameOverride](#definitions/fullnameOverride)_.
   - **`serviceName`**: Refer to _[#/definitions/serviceName](#definitions/serviceName)_.
   - **`releaseTrunc`**: Refer to _[#/definitions/releaseTrunc](#definitions/releaseTrunc)_.
   - **`prefixTrunc`**: Refer to _[#/definitions/prefixTrunc](#definitions/prefixTrunc)_.
   - **`labels`**: Refer to _[#/definitions/labels](#definitions/labels)_.
   - **`annotations`**: Refer to _[#/definitions/annotations](#definitions/annotations)_.
-  - **`content`** _(object, required)_: Secrets configuration. Can contain additional properties.
+  - **`content`** _(object)_: Secrets configuration. Can contain additional properties.
     - **Additional properties**
       - **One of**
         - _object_: Secret from a direct value. Cannot contain additional properties.
@@ -71,6 +72,22 @@
           - **`type`** _(string)_: Type of the secret. Must be one of: `["basicAuth"]`.
           - **`user`** _(string)_: Username.
           - **`password`** _(string)_: Password.
+- **`externalSecrets`** _(object)_: Can contain additional properties.
+  - **Additional properties** _(object)_: Cannot contain additional properties.
+    - **`enabled`** _(boolean)_: Enable the ExternalSecret. Default: `true`.
+    - **`nameOverride`**: Refer to _[#/definitions/nameOverride](#definitions/nameOverride)_.
+    - **`fullnameOverride`**: Refer to _[#/definitions/fullnameOverride](#definitions/fullnameOverride)_.
+    - **`serviceName`**: Refer to _[#/definitions/serviceName](#definitions/serviceName)_.
+    - **`releaseTrunc`**: Refer to _[#/definitions/releaseTrunc](#definitions/releaseTrunc)_.
+    - **`prefixTrunc`**: Refer to _[#/definitions/prefixTrunc](#definitions/prefixTrunc)_.
+    - **`labels`**: Refer to _[#/definitions/labels](#definitions/labels)_.
+    - **`annotations`**: Refer to _[#/definitions/annotations](#definitions/annotations)_.
+    - **`refreshInterval`** _(string)_: The refresh interval like 1h, 1m, 1s.
+    - **`secretStoreRef`** _(object)_: defines which SecretStore to fetch the ExternalSecret data.
+    - **`target`** _(object)_: defines the Kubernetes Secret to be created.
+    - **`dataFrom`** _(array)_: used to fetch all properties from a specific Provider data.
+    - **`data`** _(object)_: Data defines the connection between the Kubernetes Secret keys and the Provider data. Can contain additional properties.
+      - **Additional properties** _(object)_: defines the connection between the Kubernetes Secret key and the Provider data. The map key became the secretKey.
 - **`configMaps`** _(object)_: Cannot contain additional properties.
   - **`nameOverride`**: Refer to _[#/definitions/nameOverride](#definitions/nameOverride)_.
   - **`fullnameOverride`**: Refer to _[#/definitions/fullnameOverride](#definitions/fullnameOverride)_.
@@ -137,7 +154,7 @@
     - **`failedJobsHistoryLimit`** _(integer)_: CronJob - failedJobsHistoryLimit.
     - **`concurrencyPolicy`** _(string)_: CronJob - concurrencyPolicy. Must be one of: `["Allow", "Forbid", "Replace"]`.
     - **`volumeClaimTemplates`** _(array)_: The volume claim templates, the key is the name of the volume claim template.
-    - **`volumes`** _(object)_: The volumes configuration, the key is the name of the volume, if `secret.secretName` or `configMap.name` is not defined, or defined to 'self' the internal one will be used, use 'self-metadata' for the metadata ConfigMap.
+    - **`volumes`** _(object)_: The volumes configuration, the key is the name of the volume, if `secret.secretName` or `configMap.name` is not defined, or defined to 'self' the internal one will be used, use 'self-metadata' for the metadata ConfigMap, 'self-external-secret' for the external secret.
     - **`pdb`** _(object)_: The Pod disruption budget configuration. Cannot contain additional properties. Default: `{"enabled": true, "maxUnavailable": 1}`.
       - **`enabled`** _(boolean)_: Enable the Pod disruption budget. Default: `true`.
       - **`minAvailable`** _(integer)_: The minimum number of Pods available.