add validations to crd with enums (#100)

* add validations to crd with enums

* add validation to apiVersion

Author: Maanas-23

charts/elasti/templates/elastiservice-crd.yaml

@@ -45,6 +45,9 @@ spec:
                   name:
                     type: string
                   type:
+                    enum:
+                      - hpa
+                      - keda
                     type: string
                 required:
                   - name
@@ -62,8 +65,14 @@ spec:
                   Important: Run "make" to regenerate code after modifying this file
                 properties:
                   apiVersion:
+                    enum:
+                      - apps/v1
+                      - argoproj.io/v1alpha1
                     type: string
                   kind:
+                    enum:
+                      - deployments
+                      - rollouts
                     type: string
                   name:
                     type: string
@@ -76,6 +85,8 @@ spec:
                     metadata:
                       x-kubernetes-preserve-unknown-fields: true
                     type:
+                      enum:
+                        - prometheus
                       type: string
                   required:
                     - type

operator/api/v1alpha1/elastiservice_types.go

@@ -42,9 +42,11 @@ type ElastiServiceSpec struct {
 }
 
 type ScaleTargetRef struct {
+	// +kubebuilder:validation:Enum=apps/v1;argoproj.io/v1alpha1
 	APIVersion string `json:"apiVersion,omitempty"`
-	Kind       string `json:"kind,omitempty"`
-	Name       string `json:"name,omitempty"`
+	// +kubebuilder:validation:Enum=deployments;rollouts
+	Kind string `json:"kind,omitempty"`
+	Name string `json:"name,omitempty"`
 }
 
 // ElastiServiceStatus defines the observed state of ElastiService
@@ -78,14 +80,16 @@ type ElastiServiceList struct {
 }
 
 type ScaleTrigger struct {
+	// +kubebuilder:validation:Enum=prometheus
 	Type string `json:"type"`
 	// +kubebuilder:pruning:PreserveUnknownFields
 	// +kubebuilder:validation:Schemaless
 	Metadata json.RawMessage `json:"metadata,omitempty"`
 }
 
 type AutoscalerSpec struct {
-	Type string `json:"type"` // keda/hpa
+	// +kubebuilder:validation:Enum=hpa;keda
+	Type string `json:"type"`
 	Name string `json:"name"` // Name of the ScaledObject/HorizontalPodAutoscaler
 }
 

operator/config/crd/bases/elasti.truefoundry.com_elastiservices.yaml

@@ -44,6 +44,9 @@ spec:
                   name:
                     type: string
                   type:
+                    enum:
+                    - hpa
+                    - keda
                     type: string
                 required:
                 - name
@@ -61,8 +64,14 @@ spec:
                   Important: Run "make" to regenerate code after modifying this file
                 properties:
                   apiVersion:
+                    enum:
+                    - apps/v1
+                    - argoproj.io/v1alpha1
                     type: string
                   kind:
+                    enum:
+                    - deployments
+                    - rollouts
                     type: string
                   name:
                     type: string
@@ -75,6 +84,8 @@ spec:
                     metadata:
                       x-kubernetes-preserve-unknown-fields: true
                     type:
+                      enum:
+                      - prometheus
                       type: string
                   required:
                   - type