feat(traefik): add customRequest/ResponseHeaders middlewares (#10401)

charts/enterprise/traefik/Chart.yaml

@@ -23,7 +23,7 @@ sources:
   - https://github.com/traefik/traefik-helm-chart
   - https://traefik.io/
 type: application
-version: 18.0.18
+version: 18.1.0
 annotations:
   truecharts.org/catagories: |
     - network

charts/enterprise/traefik/docs/custom-header-middlewares.md

@@ -0,0 +1,11 @@
+# Adding or removing headers
+
+The `customRequestHeaders` and `customResponseHeaders` middlewares will allow you to add or remove headers from the request or response.
+
+## `customRequestHeaders`
+
+You can specify a list of headers to add to requests. When removing a header, you only need to specify the header name (an empty value removes the header with that name from requests, if it exists).
+
+## `customResponseHeaders`
+
+You can specify a list of headers to add to responses. When removing a header, you only need to specify the header name (an empty value removes the header with that name from responses, if it exists).

charts/enterprise/traefik/questions.yaml

@@ -184,6 +184,8 @@ questions:
       attrs:
 # Include{basicAuthMiddleware}
 # Include{forwardAuthMiddleware}
+# Include{customRequestHeadersMiddleware}
+# Include{customResponseHeadersMiddleware}
 # Include{chainMiddleware}
 # Include{redirectSchemeMiddleware}
 # Include{rateLimitMiddleware}

charts/enterprise/traefik/templates/middlewares/customRequestHeaders.yaml

@@ -0,0 +1,18 @@
+{{- $values := .Values }}
+
+{{ range $index, $middlewareData := .Values.middlewares.customRequestHeaders }}
+
+---
+# Declaring the user list
+apiVersion: traefik.io/v1alpha1
+kind: Middleware
+metadata:
+  name: {{ ternary (printf "%v-%v" $.Release.Name $middlewareData.name) $middlewareData.name $.Values.ingressClass.enabled }}
+  namespace: tc-system
+spec:
+  headers:
+    customRequestHeaders:
+      {{ range $index, $customRequestHeader := $middlewareData.headers }}
+      {{ $customRequestHeader.name }}: {{ $customRequestHeader.value | quote }}
+      {{ end }}
+{{ end }}

charts/enterprise/traefik/templates/middlewares/customResponseHeaders.yaml

@@ -0,0 +1,18 @@
+{{- $values := .Values }}
+
+{{ range $index, $middlewareData := .Values.middlewares.customResponseHeaders }}
+
+---
+# Declaring the user list
+apiVersion: traefik.io/v1alpha1
+kind: Middleware
+metadata:
+  name: {{ ternary (printf "%v-%v" $.Release.Name $middlewareData.name) $middlewareData.name $.Values.ingressClass.enabled }}
+  namespace: tc-system
+spec:
+  headers:
+    customResponseHeaders:
+      {{ range $index, $customResponseHeader := $middlewareData.headers }}
+      {{ $customResponseHeader.name }}: {{ $customResponseHeader.value | quote }}
+      {{ end }}
+{{ end }}

charts/enterprise/traefik/values.yaml

@@ -332,6 +332,20 @@ middlewares:
   #     - "X-CustomHeader"
   #   authResponseHeadersRegex: "^X-"
   #   trustForwardHeader: true
+  customRequestHeaders: []
+  # - name: customRequestHeaderExample
+  #   headers:
+  #     - name: X-Custom-Header
+  #       value: "foobar"
+  #     - name: X-Header-To-Remove
+  #       value: ""
+  customResponseHeaders: []
+  # - name: customResponseHeaderExample
+  #   headers:
+  #     - name: X-Custom-Header
+  #       value: "foobar"
+  #     - name: X-Header-To-Remove
+  #       value: ""
   chain: []
   # - name: chainname
   #   middlewares:

templates/questions/traefik/customRequestHeaders.yaml

@@ -0,0 +1,38 @@
+        - variable: customRequestHeaders
+          label: Custom Request Headers
+          schema:
+            type: list
+            default: []
+            items:
+              - variable: customRequestHeadersEntry
+                label: ""
+                schema:
+                  additional_attrs: true
+                  type: dict
+                  attrs:
+                    - variable: name
+                      label: Name
+                      schema:
+                        type: string
+                        required: true
+                    - variable: headers
+                      label: Headers to Add
+                      schema:
+                        type: list
+                        default: []
+                        items:
+                          - variable: name
+                            label: Header Name
+                            description: Name of custom header to be added to requests, eg. X-Custom-Header
+                            pattern: ^[a-zA-Z0-9_\-]*$
+                            schema:
+                              type: string
+                              required: true
+                              default: ""
+                          - variable: value
+                            label: Header Value
+                            description: The value of the header. If the value is empty, the header will be removed.
+                            schema:
+                              type: string
+                              required: true
+                              default: ""

templates/questions/traefik/customResponseHeaders.yaml

@@ -0,0 +1,38 @@
+        - variable: customResponseHeaders
+          label: Custom Response Headers
+          schema:
+            type: list
+            default: []
+            items:
+              - variable: customResponseHeadersEntry
+                label: ""
+                schema:
+                  additional_attrs: true
+                  type: dict
+                  attrs:
+                    - variable: name
+                      label: Name
+                      schema:
+                        type: string
+                        required: true
+                    - variable: headers
+                      label: Headers to Add
+                      schema:
+                        type: list
+                        default: []
+                        items:
+                          - variable: name
+                            label: Header Name
+                            description: Name of custom header to be added to responses, eg. X-Custom-Header
+                            pattern: ^[a-zA-Z0-9_\-]*$
+                            schema:
+                              type: string
+                              required: true
+                              default: ""
+                          - variable: value
+                            label: Header Value
+                            description: The value of the header. If the value is empty, the header will be removed.
+                            schema:
+                              type: string
+                              required: true
+                              default: ""