From be5fb00fa78a9f4870a1872e58b3aba1573bfd9c Mon Sep 17 00:00:00 2001
From: Petr Drastil <petr.drastil@gmail.com>
Date: Mon, 13 May 2024 01:16:06 +0200
Subject: [PATCH] feat(argo-cd): Add Gateway API support

Signed-off-by: Petr Drastil <petr.drastil@gmail.com>
---
 .../argocd-server/gateway-httproute.yaml      | 42 +++++++++++++++++++
 charts/argo-cd/values.yaml                    | 39 +++++++++++++++++
 2 files changed, 81 insertions(+)
 create mode 100644 charts/argo-cd/templates/argocd-server/gateway-httproute.yaml

diff --git a/charts/argo-cd/templates/argocd-server/gateway-httproute.yaml b/charts/argo-cd/templates/argocd-server/gateway-httproute.yaml
new file mode 100644
index 000000000..f2deb3215
--- /dev/null
+++ b/charts/argo-cd/templates/argocd-server/gateway-httproute.yaml
@@ -0,0 +1,42 @@
+{{- .Values.server.gatewayAPI.enabled }}
+apiVersion: {{ .Values.server.gatewayAPI.apiVersion }}
+kind: HTTPRoute
+metadata:
+  name: {{ include "argo-cd.server.fullname" . }}
+  namespace: {{ .Release.Namespace | quote }}
+  labels:
+    {{- include "argo-cd.labels" (dict "context" . "component" .Values.server.name "name" .Values.server.name) | nindent 4 }}
+    {{- with .Values.server.gatewayAPI.labels }}
+      {{- toYaml . | nindent 4 }}
+    {{- end }}
+  {{- with .Values.server.gatewayAPI.annotations }}
+  annotations:
+    {{- range $key, $value := . }}
+    {{ $key }}: {{ $value | quote }}
+    {{- end }}
+  {{- end }}
+spec:
+  parentRefs:
+    - group: gateway.networking.k8s.io
+      kind: Gateway
+      name: {{ .Values.server.gatewayAPI.gateway }}
+  hostnames:
+    - {{ .Values.server.gatewayAPI.hostname | default .Values.global.domain }}
+  rules:
+    - matches:
+        - path:
+            type: {{ .Values.server.gatewayAPI.pathType }}
+            value: {{ .Values.server.gatewayAPI.path }}
+        {{- with .Values.server.gatewayAPI.extraPaths }}
+        - path:
+            type: {{ .type | default $.Values.gatewayAPI.pathType }}
+            value: {{ .value }}
+        {{- end }}
+      backendRefs:
+        - name: {{ include "argo-cd.server.fullname" . }}
+          port: {{ .Values.server.service.servicePortHttp }}
+    {{- with .Values.server.ingress.extraRules }}
+    - matches:
+      {{- tpl (toYaml .) $ | nindent 4 }}
+    {{- end }}
+{{- end }}
diff --git a/charts/argo-cd/values.yaml b/charts/argo-cd/values.yaml
index 4ab533d01..2f15a9307 100644
--- a/charts/argo-cd/values.yaml
+++ b/charts/argo-cd/values.yaml
@@ -2043,6 +2043,45 @@ server:
     # -- Automount API credentials for the Service Account
     automountServiceAccountToken: true
 
+  # Argo CD server Gateway API HTTPRoute configuration
+  # NOTE: Alpha feature, gRPC & TLS pass-through will not work
+  gatewayAPI:
+    # -- Enable a Gateway API resources for the Argo CD server
+    enabled: true
+    # -- Additional route labels
+    labels: {}
+    # -- Additional route annotations
+    annotations: {}
+
+    # -- Defines which Gateway will implement the resource
+    gateway: ""
+
+    # -- Argo CD server hostname
+    # @default -- `""` (defaults to global.domain)
+    hostname: ""
+
+    # -- The path to Argo CD server
+    path: /
+
+    # -- HTTP reoute path type. Either 'Exact' or `PathPrefix`
+    pathType: PathPrefix
+
+    extraPaths: []
+      # - type: PathPrefix
+      #   value: /*
+
+    # -- Additional routing rules
+    # @default -- `[]` (See [values.yaml])
+    ## Note: Supports use of custom Helm templates
+    extraRules: []
+      # - path:
+      #     type: PathPrefix
+      #     value: /
+      #   backendRefs:
+      #     - name: '{{ include "argo-cd.server.fullname" . }}'
+      #       port: '{{ .Values.server.service.servicePortHttpName }}'
+
+
   # Argo CD server ingress configuration
   ingress:
     # -- Enable an ingress resource for the Argo CD server