Add support for OCIRepository as chartRef

.github/workflows/e2e.yaml

@@ -138,6 +138,11 @@ jobs:
           kubectl -n install-create-target-ns get deployment install-create-target-ns-install-create-target-ns-podinfo
 
           kubectl -n helm-system delete -f config/testdata/install-create-target-ns
+      - name: Run install from ocirepo test
+        run: |
+          kubectl -n helm-system apply -f config/testdata/install-from-ocirepo-source
+          kubectl -n helm-system wait helmreleases/podinfo-from-ocirepo --for=condition=ready --timeout=4m
+          kubectl -n helm-system delete -f config/testdata/install-from-ocirepo-source
       - name: Run install fail test
         run: |
           test_name=install-fail
@@ -458,6 +463,45 @@ jobs:
           fi
 
           kubectl delete -n helm-system -f config/testdata/$test_name/install.yaml
+      - name: Run upgrade from ocirepo source
+        run: |
+            test_name=upgrade-from-ocirepo-source
+            kubectl -n helm-system apply -f config/testdata/$test_name/install.yaml
+            echo -n ">>> Waiting for expected conditions"
+            count=0
+            until [ 'true' == "$( kubectl -n helm-system get helmrelease/$test_name -o json | jq '.status.conditions | map( { (.type): .status } ) | add | .Released=="True" and .Ready=="True"' )" ]; do
+              echo -n '.'
+              sleep 5
+              count=$((count + 1))
+              if [[ ${count} -eq 24 ]]; then
+                echo ' No more retries left!'
+                exit 1
+              fi
+            done
+            echo ' done'
+
+            # Validate release was installed.
+            REVISION_COUNT=$(helm -n helm-system history -o json $test_name | jq 'length')
+            if [ "$REVISION_COUNT" != 1 ]; then
+              echo -e "Unexpected revision count: $REVISION_COUNT"
+              exit 1
+            fi
+
+            kubectl -n helm-system apply -f config/testdata/$test_name/upgrade.yaml
+            echo -n ">>> Waiting for expected conditions"
+            count=0
+            until [ 'true' == "$( kubectl -n helm-system get helmrelease/$test_name -o json | jq '.status.conditions | map( { (.type): .status } ) | add | .Released=="True" and .Ready=="True"' )" ]; do
+              echo -n '.'
+              sleep 5
+              count=$((count + 1))
+              if [[ ${count} -eq 24 ]]; then
+                echo ' No more retries left!'
+                exit 1
+              fi
+            done
+            echo ' done'
+
+            kubectl delete -n helm-system -f config/testdata/$test_name/install.yaml
       - name: Run upgrade fail with uninstall remediation strategy test
         run: |
           test_name=upgrade-fail-remediate-uninstall

api/v2beta2/helmrelease_types.go

@@ -74,11 +74,17 @@ type PostRenderer struct {
 }
 
 // HelmReleaseSpec defines the desired state of a Helm release.
+// +kubebuilder:validation:XValidation:rule="(has(self.chart) && !has(self.chartRef)) || (!has(self.chart) && has(self.chartRef))", message="either chart or chartRef must be set"
 type HelmReleaseSpec struct {
 	// Chart defines the template of the v1beta2.HelmChart that should be created
 	// for this HelmRelease.
-	// +required
-	Chart HelmChartTemplate `json:"chart"`
+	// +optional
+	Chart HelmChartTemplate `json:"chart,omitempty"`
+
+	// ChartRef holds a reference to a source controller resource containing the
+	// Helm chart artifact.
+	// +optional
+	ChartRef *CrossNamespaceSourceReference `json:"chartRef,omitempty"`
 
 	// Interval at which to reconcile the Helm release.
 	// +kubebuilder:validation:Type=string
@@ -996,10 +1002,16 @@ type HelmReleaseStatus struct {
 	LastAppliedRevision string `json:"lastAppliedRevision,omitempty"`
 
 	// LastAttemptedRevision is the Source revision of the last reconciliation
-	// attempt.
+	// attempt. For OCIRepository  sources, the 12 first characters of the digest are
+	// appended to the chart version e.g. "1.2.3+1234567890ab".
 	// +optional
 	LastAttemptedRevision string `json:"lastAttemptedRevision,omitempty"`
 
+	// LastAttemptedRevisionDigest is the digest of the last reconciliation attempt.
+	// This is only set for OCIRepository sources.
+	// +optional
+	LastAttemptedRevisionDigest string `json:"lastAttemptedRevisionDigest,omitempty"`
+
 	// LastAttemptedValuesChecksum is the SHA1 checksum for the values of the last
 	// reconciliation attempt.
 	// Deprecated: Use LastAttemptedConfigDigest instead.
@@ -1052,6 +1064,10 @@ func (in HelmReleaseStatus) GetHelmChart() (string, string) {
 	return "", ""
 }
 
+func (in *HelmReleaseStatus) GetLastAttemptedRevision() string {
+	return in.LastAttemptedRevision
+}
+
 const (
 	// SourceIndexKey is the key used for indexing HelmReleases based on
 	// their sources.
@@ -1241,6 +1257,16 @@ func (in *HelmRelease) GetStatusConditions() *[]metav1.Condition {
 	return &in.Status.Conditions
 }
 
+// IsChartRefPresent returns true if the HelmRelease has a ChartRef.
+func (in *HelmRelease) HasChartRef() bool {
+	return in.Spec.ChartRef != nil
+}
+
+// IsChartTemplatePresent returns true if the HelmRelease has a ChartTemplate.
+func (in *HelmRelease) HasChartTemplate() bool {
+	return in.Spec.Chart.Spec.Chart != ""
+}
+
 // +kubebuilder:object:root=true
 
 // HelmReleaseList contains a list of HelmRelease objects.

api/v2beta2/reference_types.go

@@ -42,6 +42,33 @@ type CrossNamespaceObjectReference struct {
 	Namespace string `json:"namespace,omitempty"`
 }
 
+// CrossNamespaceSourceReference contains enough information to let you locate
+// the typed referenced object at cluster level.
+type CrossNamespaceSourceReference struct {
+	// APIVersion of the referent.
+	// +optional
+	APIVersion string `json:"apiVersion,omitempty"`
+
+	// Kind of the referent.
+	// +kubebuilder:validation:Enum=OCIRepository
+	// +required
+	Kind string `json:"kind"`
+
+	// Name of the referent.
+	// +kubebuilder:validation:MinLength=1
+	// +kubebuilder:validation:MaxLength=253
+	// +required
+	Name string `json:"name"`
+
+	// Namespace of the referent, defaults to the namespace of the Kubernetes
+	// resource object that contains the reference.
+	// +kubebuilder:validation:MinLength=1
+	// +kubebuilder:validation:MaxLength=63
+	// +kubebuilder:validation:Optional
+	// +optional
+	Namespace string `json:"namespace,omitempty"`
+}
+
 // ValuesReference contains a reference to a resource containing Helm values,
 // and optionally the key they can be found at.
 type ValuesReference struct {

api/v2beta2/snapshot_types.go

@@ -156,6 +156,9 @@ type Snapshot struct {
 	// run by the controller.
 	// +optional
 	TestHooks *map[string]*TestHookStatus `json:"testHooks,omitempty"`
+	// OCIDigest is the digest of the OCI artifact associated with the release.
+	// +optional
+	OCIDigest string `json:"ociDigest,omitempty"`
 }
 
 // FullReleaseName returns the full name of the release in the format

config/crd/bases/helm.toolkit.fluxcd.io_helmreleases.yaml

@@ -1100,6 +1100,10 @@ spec:
                       description: Namespace is the namespace the release is deployed
                         to.
                       type: string
+                    ociDigest:
+                      description: OCIDigest is the digest of the OCI artifact associated
+                        with the release.
+                      type: string
                     status:
                       description: Status is the current state of the release.
                       type: string
@@ -1420,6 +1424,35 @@ spec:
                 required:
                 - spec
                 type: object
+              chartRef:
+                description: |-
+                  ChartRef holds a reference to a source controller resource containing the
+                  Helm chart artifact.
+                properties:
+                  apiVersion:
+                    description: APIVersion of the referent.
+                    type: string
+                  kind:
+                    description: Kind of the referent.
+                    enum:
+                    - OCIRepository
+                    type: string
+                  name:
+                    description: Name of the referent.
+                    maxLength: 253
+                    minLength: 1
+                    type: string
+                  namespace:
+                    description: |-
+                      Namespace of the referent, defaults to the namespace of the Kubernetes
+                      resource object that contains the reference.
+                    maxLength: 63
+                    minLength: 1
+                    type: string
+                required:
+                - kind
+                - name
+                type: object
               dependsOn:
                 description: |-
                   DependsOn may contain a meta.NamespacedObjectReference slice with
@@ -2199,9 +2232,12 @@ spec:
                   type: object
                 type: array
             required:
-            - chart
             - interval
             type: object
+            x-kubernetes-validations:
+            - message: either chart or chartRef must be set
+              rule: (has(self.chart) && !has(self.chartRef)) || (!has(self.chart)
+                && has(self.chartRef))
           status:
             default:
               observedGeneration: -1
@@ -2342,6 +2378,10 @@ spec:
                       description: Namespace is the namespace the release is deployed
                         to.
                       type: string
+                    ociDigest:
+                      description: OCIDigest is the digest of the OCI artifact associated
+                        with the release.
+                      type: string
                     status:
                       description: Status is the current state of the release.
                       type: string
@@ -2420,7 +2460,13 @@ spec:
               lastAttemptedRevision:
                 description: |-
                   LastAttemptedRevision is the Source revision of the last reconciliation
-                  attempt.
+                  attempt. For OCIRepository  sources, the 12 first characters of the digest are
+                  appended to the chart version e.g. "1.2.3+1234567890ab".
+                type: string
+              lastAttemptedRevisionDigest:
+                description: |-
+                  LastAttemptedRevisionDigest is the digest of the last reconciliation attempt.
+                  This is only set for OCIRepository sources.
                 type: string
               lastAttemptedValuesChecksum:
                 description: |-

config/rbac/role.yaml

@@ -55,3 +55,17 @@ rules:
   - helmcharts/status
   verbs:
   - get
+- apiGroups:
+  - source.toolkit.fluxcd.io
+  resources:
+  - ocirepositories
+  verbs:
+  - get
+  - list
+  - watch
+- apiGroups:
+  - source.toolkit.fluxcd.io
+  resources:
+  - ocirepositories/status
+  verbs:
+  - get

config/testdata/install-from-ocirepo-source/test.yaml

@@ -0,0 +1,25 @@
+---
+apiVersion: source.toolkit.fluxcd.io/v1beta2
+kind: OCIRepository
+metadata:
+  name: podinfo-ocirepo
+spec:
+  interval: 30s
+  url: oci://ghcr.io/stefanprodan/charts/podinfo
+  ref:
+    tag: 6.6.0
+---
+apiVersion: helm.toolkit.fluxcd.io/v2beta2
+kind: HelmRelease
+metadata:
+  name: podinfo-from-ocirepo
+spec:
+  chartRef:
+    kind: OCIRepository
+    name: podinfo-ocirepo
+  interval: 30s
+  values:
+    resources:
+      requests:
+        cpu: 100m
+        memory: 64Mi

config/testdata/upgrade-from-ocirepo-source/install.yaml

@@ -0,0 +1,25 @@
+---
+apiVersion: source.toolkit.fluxcd.io/v1beta2
+kind: OCIRepository
+metadata:
+  name: upgrade-from-ocirepo-source
+spec:
+  interval: 30s
+  url: oci://ghcr.io/stefanprodan/charts/podinfo
+  ref:
+    digest: "sha256:cdd538a0167e4b51152b71a477e51eb6737553510ce8797dbcc537e1342311bb"
+---
+apiVersion: helm.toolkit.fluxcd.io/v2beta2
+kind: HelmRelease
+metadata:
+  name: upgrade-from-ocirepo-source
+spec:
+  chartRef:
+    kind: OCIRepository
+    name: upgrade-from-ocirepo-source
+  interval: 30s
+  values:
+    resources:
+      requests:
+        cpu: 100m
+        memory: 64Mi

config/testdata/upgrade-from-ocirepo-source/upgrade.yaml

@@ -0,0 +1,10 @@
+---
+apiVersion: source.toolkit.fluxcd.io/v1beta2
+kind: OCIRepository
+metadata:
+  name: upgrade-from-ocirepo-source
+spec:
+  interval: 30s
+  url: oci://ghcr.io/stefanprodan/charts/podinfo
+  ref:
+    digest: "sha256:0cc9a8446c95009ef382f5eade883a67c257f77d50f84e78ecef2aac9428d1e5"