feat(argocd-apps): Add rollout strategy for ApplicationSet (#2063)

feat(argocd-apps): add rollout strategy for ApplicationSet

Signed-off-by: Khue Doan <mail@khuedoan.com>

charts/argocd-apps/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 name: argocd-apps
 description: A Helm chart for managing additional Argo CD Applications and Projects
 type: application
-version: 1.1.0
+version: 1.2.0
 home: https://github.com/argoproj/argo-helm
 icon: https://argo-cd.readthedocs.io/en/stable/assets/logo.png
 keywords:
@@ -18,4 +18,4 @@ annotations:
     url: https://argoproj.github.io/argo-helm/pgp_keys.asc
   artifacthub.io/changes: |
     - kind: added
-      description: Generate application, applicationset, project with template
+      description: Rollout strategy for ApplicationSet

charts/argocd-apps/ci/applicationsets-progressive-syncs-values.yaml

@@ -0,0 +1,41 @@
+# Test applicationsets with Progressive Syncs
+
+applicationsets:
+- name: applicationset-progressive-syncs
+  generators:
+  - list:
+      elements:
+      - cluster: engineering-dev
+        url: https://1.2.3.4
+        env: env-dev
+      - cluster: engineering-prod
+        url: https://9.8.7.6/
+        env: env-prod
+  strategy:
+    type: RollingSync
+    rollingSync:
+      steps:
+      - matchExpressions:
+        - key: envLabel
+          operator: In
+          values:
+          - env-dev
+      - matchExpressions:
+        - key: envLabel
+          operator: In
+          values:
+          - env-prod
+  template:
+    metadata:
+      name: '{{.cluster}}-guestbook'
+      labels:
+        envLabel: '{{.env}}'
+    spec:
+      project: my-project
+      source:
+        repoURL: https://github.com/argoproj/argocd-example-apps.git
+        targetRevision: HEAD
+        path: guestbook/{{.cluster}}
+      destination:
+        server: '{{.url}}'
+        namespace: guestbook

charts/argocd-apps/templates/applicationsets.yaml

@@ -26,6 +26,10 @@ spec:
   generators:
     {{- toYaml . | nindent 4 }}
   {{- end }}
+  {{- with .strategy }}
+  strategy:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
   {{- with .syncPolicy }}
   syncPolicy:
     {{- toYaml . | nindent 4 }}

charts/argocd-apps/values.yaml

@@ -103,10 +103,28 @@ applicationsets: []
 #       directories:
 #       - path: guestbook
 #       - path: kustomize-*
+#   # Progressive Syncs is an experimental feature and it must be explicitly enabled
+#   # Ref: https://argo-cd.readthedocs.io/en/stable/operator-manual/applicationset/Progressive-Syncs/#enabling-progressive-syncs
+#   strategy:
+#     type: RollingSync
+#     rollingSync:
+#       steps:
+#       - matchExpressions:
+#         - key: project
+#           operator: In
+#           values:
+#           - guestbook
+#       - matchExpressions:
+#         - key: project
+#           operator: In
+#           values:
+#           - kustomize-foo
+#           - kustomize-bar
 #   template:
 #     metadata:
 #       name: '{{path.basename}}'
-#       labels: {}
+#       labels:
+#         project: '{{path.basename}}'
 #       annotations: {}
 #     spec:
 #       project: default