feat(argo-cd): adding httproute support to applicationset controller's webhook support

Signed-off-by: Stephen Kluthe <stephen.kluthe@goradar.com>

Author: skluther

charts/argo-cd/Chart.yaml

@@ -3,7 +3,7 @@ appVersion: v3.2.5
 kubeVersion: ">=1.25.0-0"
 description: A Helm chart for Argo CD, a declarative, GitOps continuous delivery tool for Kubernetes.
 name: argo-cd
-version: 9.3.4
+version: 9.3.5
 home: https://github.com/argoproj/argo-helm
 icon: https://argo-cd.readthedocs.io/en/stable/assets/logo.png
 sources:
@@ -28,3 +28,5 @@ annotations:
   artifacthub.io/changes: |
     - kind: changed
       description: Bump argo-cd to v3.2.5
+    - kind: added
+      description: Added httproute support to ApplicationSet controller webhook

charts/argo-cd/README.md

@@ -1675,6 +1675,12 @@ If you use an External Redis (See Option 3 above), this Job is not deployed.
 | applicationSet.extraEnvFrom | list | `[]` (See [values.yaml]) | envFrom to pass to the ApplicationSet controller |
 | applicationSet.extraVolumeMounts | list | `[]` | List of extra mounts to add (normally used with extraVolumes) |
 | applicationSet.extraVolumes | list | `[]` | List of extra volumes to add |
+| applicationSet.httproute.annotations | object | `{}` | Additional HTTPRoute annotations |
+| applicationSet.httproute.enabled | bool | `false` | Enable HTTPRoute resource for Argo CD Applicationset Webhook (Gateway API) |
+| applicationSet.httproute.hostnames | list | `[]` (See [values.yaml]) | List of hostnames for the HTTPRoute |
+| applicationSet.httproute.labels | object | `{}` | Additional HTTPRoute labels |
+| applicationSet.httproute.parentRefs | list | `[]` (See [values.yaml]) | Gateway API parentRefs for the HTTPRoute |
+| applicationSet.httproute.rules | list | `[]` (See [values.yaml]) | HTTPRoute rules configuration |
 | applicationSet.image.imagePullPolicy | string | `""` (defaults to global.image.imagePullPolicy) | Image pull policy for the ApplicationSet controller |
 | applicationSet.image.repository | string | `""` (defaults to global.image.repository) | Repository to use for the ApplicationSet controller |
 | applicationSet.image.tag | string | `""` (defaults to global.image.tag) | Tag to use for the ApplicationSet controller |

charts/argo-cd/templates/argocd-applicationset/httproute.yaml

@@ -0,0 +1,43 @@
+{{- if .Values.applicationSet.httproute.enabled -}}
+{{- $fullName := include "argo-cd.applicationSet.fullname" . -}}
+apiVersion: gateway.networking.k8s.io/v1
+kind: HTTPRoute
+metadata:
+  name: {{ include "argo-cd.applicationSet.fullname" . }}
+  namespace: {{ include  "argo-cd.namespace" . }}
+  labels:
+    {{- include "argo-cd.labels" (dict "context" . "component" .Values.applicationSet.name "name" .Values.applicationSet.name) | nindent 4 }}
+    {{- with .Values.applicationSet.httproute.labels }}
+      {{- toYaml . | nindent 4 }}
+    {{- end }}
+  {{- with .Values.applicationSet.httproute.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  parentRefs:
+    {{- with .Values.applicationSet.httproute.parentRefs }}
+      {{- toYaml . | nindent 4 }}
+    {{- end }}
+  {{- with .Values.applicationSet.httproute.hostnames }}
+  hostnames:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+  rules:
+    {{- range .Values.applicationSet.httproute.rules }}
+    {{- with .matches }}
+    - matches:
+      {{- toYaml . | nindent 8 }}
+    {{- end }}
+    {{- with .filters }}
+      filters:
+      {{- toYaml . | nindent 8 }}
+    {{- end }}
+      backendRefs:
+        - group: ''
+          kind: Service
+          name: {{ include "argo-cd.applicationSet.fullname" . }}
+          port: {{ .Values.applicationSet.service.port }}
+          weight: 1
+    {{- end }}
+{{- end }}

charts/argo-cd/values.yaml

@@ -3511,6 +3511,45 @@ applicationSet:
       # - secretName: argocd-applicationset-tls
       #   hosts:
       #     - argocd-applicationset.example.com
+
+  ## Gateway API HTTPRoute for the Git Generator webhook
+  ## Ref: https://argocd-applicationset.readthedocs.io/en/master/Generators-Git/#webhook-configuration)
+  # NOTE: Gateway API support is in EXPERIMENTAL status
+  # Support depends on your Gateway controller implementation
+  # Some controllers may require additional configuration (e.g., BackendTLSPolicy for HTTPS backends)
+  # Refer to https://gateway-api.sigs.k8s.io/implementations/ for controller-specific details
+  httproute:
+    # -- Enable HTTPRoute resource for Argo CD Applicationset Webhook (Gateway API)
+    enabled: false
+    # -- Additional HTTPRoute labels
+    labels: {}
+    # -- Additional HTTPRoute annotations
+    annotations: {}
+    # -- Gateway API parentRefs for the HTTPRoute
+    ## Must reference an existing Gateway
+    # @default -- `[]` (See [values.yaml])
+    parentRefs: []
+      # - name: example-gateway
+      #   namespace: example-gateway-namespace
+      #   sectionName: https
+    # -- List of hostnames for the HTTPRoute
+    # @default -- `[]` (See [values.yaml])
+    hostnames: []
+      # - argocd.example.com
+    # -- HTTPRoute rules configuration
+    # @default -- `[]` (See [values.yaml])
+    rules:
+      - matches:
+          - path:
+              type: PathPrefix
+              value: /api/webhook
+        # filters: []
+        #   - type: RequestHeaderModifier
+        #     requestHeaderModifier:
+        #       add:
+        #         - name: X-Custom-Header
+        #           value: custom-value
+
   # -- Enable ApplicationSet in any namespace feature
   allowAnyNamespace: false