Change workerpool hash generation (#619)

* change workpool hash generation

* Modify test case to pass additional data for workpool hash generation

pkg/controller/worker/machines.go

@@ -7,6 +7,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"strconv"
 
 	"github.com/gardener/gardener/extensions/pkg/controller/worker"
 	genericworkeractuator "github.com/gardener/gardener/extensions/pkg/controller/worker/genericactuator"
@@ -190,5 +191,27 @@ func (w *workerDelegate) generateMachineClassAndSecrets() ([]*machinecontrollerv
 
 func (w *workerDelegate) generateHashForWorkerPool(pool v1alpha1.WorkerPool) (string, error) {
 	// Generate the worker pool hash.
-	return worker.WorkerPoolHash(pool, w.cluster, nil, nil)
+	return worker.WorkerPoolHash(pool, w.cluster, computeAdditionalHashDataV1(pool), nil)
+}
+
+func computeAdditionalHashDataV1(pool v1alpha1.WorkerPool) []string {
+	var additionalData []string
+
+	if pool.Volume != nil && pool.Volume.Encrypted != nil {
+		additionalData = append(additionalData, strconv.FormatBool(*pool.Volume.Encrypted))
+	}
+
+	for _, dv := range pool.DataVolumes {
+		additionalData = append(additionalData, dv.Name, dv.Size)
+
+		if dv.Type != nil {
+			additionalData = append(additionalData, *dv.Type)
+		}
+
+		if dv.Encrypted != nil {
+			additionalData = append(additionalData, strconv.FormatBool(*dv.Encrypted))
+		}
+	}
+
+	return additionalData
 }

pkg/controller/worker/machines_test.go

@@ -6,6 +6,7 @@ package worker
 import (
 	"encoding/json"
 	"fmt"
+	"strconv"
 
 	"github.com/gardener/gardener/extensions/pkg/controller/worker"
 	genericworkeractuator "github.com/gardener/gardener/extensions/pkg/controller/worker/genericactuator"
@@ -53,8 +54,8 @@ var _ = Describe("Machines", func() {
 		err = workerDelegate.DeployMachineClasses(ctx)
 		Expect(err).NotTo(HaveOccurred())
 
-		// TODO: Fix machine pool hashing
-		workerPoolHash, err := worker.WorkerPoolHash(pool, testCluster, nil, nil)
+		additionalData := []string{strconv.FormatBool(volumeEncrypted), datVolumeName, volumeSize, volumeType, strconv.FormatBool(volumeEncrypted)}
+		workerPoolHash, err := worker.WorkerPoolHash(pool, testCluster, additionalData, nil)
 		Expect(err).NotTo(HaveOccurred())
 
 		By("ensuring that the machine class for each pool has been deployed")
@@ -120,7 +121,8 @@ var _ = Describe("Machines", func() {
 
 	It("should generate the machine deployments", func(ctx SpecContext) {
 		By("creating a worker delegate")
-		workerPoolHash, err := worker.WorkerPoolHash(pool, testCluster, nil, nil)
+		additionalData := []string{strconv.FormatBool(volumeEncrypted), datVolumeName, volumeSize, volumeType, strconv.FormatBool(volumeEncrypted)}
+		workerPoolHash, err := worker.WorkerPoolHash(pool, testCluster, additionalData, nil)
 		Expect(err).NotTo(HaveOccurred())
 		var (
 			deploymentName1 = fmt.Sprintf("%s-%s-z%d", w.Namespace, pool.Name, 1)

pkg/controller/worker/suite_test.go

@@ -120,6 +120,14 @@ var _ = BeforeSuite(func() {
 	komega.SetClient(k8sClient)
 })
 
+var (
+	volumeName      = "test-volume"
+	volumeSize      = "10Gi"
+	volumeType      = "fast"
+	volumeEncrypted = true
+	datVolumeName   = "volume-1"
+)
+
 func SetupTest() (*corev1.Namespace, *gardener.ChartApplier) {
 	var (
 		chartApplier gardener.ChartApplier
@@ -139,9 +147,6 @@ func SetupTest() (*corev1.Namespace, *gardener.ChartApplier) {
 		chartApplier, err = gardener.NewChartApplierForConfig(cfg)
 		Expect(err).NotTo(HaveOccurred())
 
-		volumeName := "test-volume"
-		volumeType := "fast"
-
 		// define test resources
 		pool = gardenerextensionv1alpha1.WorkerPool{
 			MachineType:    "foo",
@@ -158,9 +163,18 @@ func SetupTest() (*corev1.Namespace, *gardener.ChartApplier) {
 			Name:     "pool",
 			UserData: []byte("some-data"),
 			Volume: &gardenerextensionv1alpha1.Volume{
-				Name: &volumeName,
-				Type: &volumeType,
-				Size: "10Gi",
+				Name:      &volumeName,
+				Type:      &volumeType,
+				Size:      volumeSize,
+				Encrypted: &volumeEncrypted,
+			},
+			DataVolumes: []gardenerextensionv1alpha1.DataVolume{
+				{
+					Name:      datVolumeName,
+					Type:      &volumeType,
+					Size:      volumeSize,
+					Encrypted: &volumeEncrypted,
+				},
 			},
 			Zones:        []string{"zone1", "zone2"},
 			Architecture: ptr.To[string]("amd64"),