Add support for Kustomize components

Fix #753

api/v1beta2/kustomization_types.go

@@ -153,6 +153,11 @@ type KustomizationSpec struct {
 	// +kubebuilder:validation:Enum=none;client;server
 	// +optional
 	Validation string `json:"validation,omitempty"`
+
+	// Components specifies relative paths to specifications of other Components
+	// via relative paths, absolute paths, or URLs.
+	// +optional
+	Components []string `json:"components,omitempty"`
 }
 
 // Decryption defines how decryption is handled for Kubernetes manifests.

config/crd/bases/kustomize.toolkit.fluxcd.io_kustomizations.yaml

@@ -585,6 +585,12 @@ spec:
             description: KustomizationSpec defines the configuration to calculate
               the desired state from a Source using Kustomize.
             properties:
+              components:
+                description: Components specifies relative paths to specifications
+                  of other Components via relative paths, absolute paths, or URLs.
+                items:
+                  type: string
+                type: array
               decryption:
                 description: Decrypt Kubernetes secrets before applying them on the
                   cluster.

internal/generator/generator.go

@@ -79,6 +79,8 @@ func (kg *KustomizeGenerator) WriteFile(dirPath string) (string, error) {
 		})
 	}
 
+	kus.Components = kg.kustomization.Spec.Components
+
 	for _, m := range kg.kustomization.Spec.PatchesStrategicMerge {
 		kus.PatchesStrategicMerge = append(kus.PatchesStrategicMerge, kustypes.PatchStrategicMerge(m.Raw))
 	}