Extend ClusterExtension API with .spec.config

Signed-off-by: Per Goncalves da Silva <[email protected]>

Author: Per Goncalves da Silva

api/v1/clusterextension_types.go

@@ -17,6 +17,7 @@ limitations under the License.
 package v1
 
 import (
+	apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
@@ -25,6 +26,8 @@ var ClusterExtensionKind = "ClusterExtension"
 type (
 	UpgradeConstraintPolicy     string
 	CRDUpgradeSafetyEnforcement string
+
+	ClusterExtensionConfigType string
 )
 
 const (
@@ -39,6 +42,8 @@ const (
 	// Use with caution as this can lead to unknown and potentially
 	// disastrous results such as data loss.
 	UpgradeConstraintPolicySelfCertified UpgradeConstraintPolicy = "SelfCertified"
+
+	ClusterExtensionConfigTypeInline ClusterExtensionConfigType = "Inline"
 )
 
 // ClusterExtensionSpec defines the desired state of ClusterExtension
@@ -92,6 +97,15 @@ type ClusterExtensionSpec struct {
 	//
 	// +optional
 	Install *ClusterExtensionInstallConfig `json:"install,omitempty"`
+
+	// config contains optional configuration values applied during rendering of the
+	// ClusterExtension's manifests. Values can be specified inline.
+	//
+	// config is optional. When not specified, the default configuration of the resolved bundle will be used.
+	//
+	// <opcon:experimental>
+	// +optional
+	Config *ClusterExtensionConfig `json:"config,omitempty"`
 }
 
 const SourceTypeCatalog = "Catalog"
@@ -138,6 +152,34 @@ type ClusterExtensionInstallConfig struct {
 	Preflight *PreflightConfig `json:"preflight,omitempty"`
 }
 
+// ClusterExtensionConfig is a discriminated union which selects the source configuration values to be merged into
+// the ClusterExtension's rendered manifests.
+//
+// +kubebuilder:validation:XValidation:rule="has(self.configType) && self.configType == 'Inline' ?has(self.inline) : !has(self.inline)",message="inline is required when configType is Inline, and forbidden otherwise"
+// +union
+type ClusterExtensionConfig struct {
+	// configType is a required reference to the type of configuration source.
+	//
+	// Allowed values are "Inline"
+	//
+	// When this field is set to "Inline", the cluster extension configuration is defined inline within the
+	// ClusterExtension resource.
+	//
+	// +unionDiscriminator
+	// +kubebuilder:validation:Enum:="Inline"
+	// +kubebuilder:validation:Required
+	ConfigType ClusterExtensionConfigType `json:"configType"`
+
+	// inline contains JSON or YAML values specified directly in the
+	// ClusterExtension.
+	//
+	// inline must be set if configType is 'Inline'.
+	//
+	// +kubebuilder:validation:Type=object
+	// +optional
+	Inline *apiextensionsv1.JSON `json:"inline,omitempty"`
+}
+
 // CatalogFilter defines the attributes used to identify and filter content from a catalog.
 type CatalogFilter struct {
 	// packageName is a reference to the name of the package to be installed