csi: enable csi-omap when set in sidecar config

Signed-off-by: Rewant Soni <[email protected]>

controllers/clusterversion_controller.go

@@ -16,6 +16,7 @@ package controllers
 import (
 	"bytes"
 	"context"
+	"strconv"
 	"strings"
 
 	// The embed package is required for the prometheus rule files
@@ -51,7 +52,9 @@ import (
 var pvcPrometheusRules string
 
 const (
-	operatorConfigMapName = "ocs-client-operator-config"
+	operatorConfigMapName   = "ocs-client-operator-config"
+	csiSidecarConfigMapName = "ceph-csi-sidecar-config"
+	csiOMAPGeneratorKey     = "CSI_ENABLE_OMAP_GENERATOR"
 	// ClusterVersionName is the name of the ClusterVersion object in the
 	// openshift cluster.
 	clusterVersionName = "version"
@@ -86,7 +89,7 @@ func (c *ClusterVersionReconciler) SetupWithManager(mgr ctrl.Manager) error {
 			func(client client.Object) bool {
 				namespace := client.GetNamespace()
 				name := client.GetName()
-				return ((namespace == c.OperatorNamespace) && (name == operatorConfigMapName))
+				return namespace == c.OperatorNamespace && (name == operatorConfigMapName || name == csiSidecarConfigMapName)
 			},
 		),
 	)
@@ -203,6 +206,25 @@ func (c *ClusterVersionReconciler) Reconcile(ctx context.Context, req ctrl.Reque
 		return ctrl.Result{}, err
 	}
 
+	sideCarConfig := &corev1.ConfigMap{}
+	sideCarConfig.Name = csiSidecarConfigMapName
+	sideCarConfig.Namespace = c.OperatorNamespace
+
+	err = c.get(sideCarConfig)
+	if err != nil && !k8serrors.IsNotFound(err) {
+		c.log.Error(err, "failed to get csi side car configmap", "name", sideCarConfig)
+		return ctrl.Result{}, err
+	}
+
+	enableOMAPGenerator := false
+	if value, ok := sideCarConfig.Data[csiOMAPGeneratorKey]; ok {
+		enableOMAPGenerator, err = strconv.ParseBool(value)
+		if err != nil {
+			c.log.Error(err, "failed to parse configmap entry", "ConfigMap", sideCarConfig, csiOMAPGeneratorKey, value)
+			return ctrl.Result{}, err
+		}
+	}
+
 	c.cephFSDeployment = &appsv1.Deployment{
 		ObjectMeta: metav1.ObjectMeta{
 			Name:      csi.CephFSDeploymentName,
@@ -249,7 +271,7 @@ func (c *ClusterVersionReconciler) Reconcile(ctx context.Context, req ctrl.Reque
 		if err := c.own(c.rbdDeployment); err != nil {
 			return err
 		}
-		csi.SetRBDDeploymentDesiredState(c.rbdDeployment)
+		csi.SetRBDDeploymentDesiredState(c.rbdDeployment, enableOMAPGenerator)
 		return nil
 	})
 	if err != nil {
@@ -337,6 +359,10 @@ func (c *ClusterVersionReconciler) create(obj client.Object) error {
 	return c.Client.Create(c.ctx, obj)
 }
 
+func (c *ClusterVersionReconciler) get(obj client.Object) error {
+	return c.Client.Get(c.ctx, client.ObjectKeyFromObject(obj), obj)
+}
+
 // applyLabels adds labels to object meta, overwriting keys that are already defined.
 func applyLabels(label string, t *metav1.ObjectMeta) {
 	// Create a map to store the configuration

controllers/storageclassclaim_controller.go

@@ -306,6 +306,24 @@ func (r *StorageClassClaimReconciler) reconcilePhases() (reconcile.Result, error
 					return reconcile.Result{}, fmt.Errorf("failed to extract monitor data: %v", err)
 				}
 				csiClusterConfigEntry.Monitors = append(csiClusterConfigEntry.Monitors, monitorIps...)
+			} else if eResource.Kind == "ConfigMap" && eResource.Name == csiSidecarConfigMapName {
+				csiSideCarConfig := &corev1.ConfigMap{}
+				csiSideCarConfig.Name = eResource.Name
+				csiSideCarConfig.Namespace = r.OperatorNamespace
+
+				data := map[string]string{}
+				err = json.Unmarshal(eResource.Data, &data)
+				if err != nil {
+					return reconcile.Result{}, fmt.Errorf("failed to unmarshal csi-sidecar-config configuration response: %v", err)
+				}
+
+				_, err := controllerutil.CreateOrUpdate(r.ctx, r.Client, csiSideCarConfig, func() error {
+					csiSideCarConfig.Data = data
+					return nil
+				})
+				if err != nil {
+					return reconcile.Result{}, fmt.Errorf("failed to create or update configMap %v: %s", csiSideCarConfig, err)
+				}
 			}
 		}
 		// Go over the received objects and operate on them accordingly.

pkg/csi/rbddeployment.go

@@ -105,11 +105,11 @@ var rbdDeploymentSpec = appsv1.DeploymentSpec{
 						},
 						{
 							Name:      "ceph-csi-configs",
-							MountPath: "/etc/ceph-csi-config",
+							MountPath: templates.DefaultCephCSIConfigPath,
 						},
 						{
 							Name:      "keys-tmp-dir",
-							MountPath: "/tmp/csi/keys",
+							MountPath: templates.DefaultTmpDir,
 						},
 						{
 							Name:      "ceph-csi-kms-config",
@@ -214,7 +214,7 @@ var rbdDeploymentSpec = appsv1.DeploymentSpec{
 	},
 }
 
-func SetRBDDeploymentDesiredState(deploy *appsv1.Deployment) {
+func SetRBDDeploymentDesiredState(deploy *appsv1.Deployment, enableOMAPGenerator bool) {
 	// Copy required labels
 	for key := range rbdDaemonsetLabels {
 		deploy.Labels[key] = cephfsDaemonsetLabels[key]
@@ -223,6 +223,12 @@ func SetRBDDeploymentDesiredState(deploy *appsv1.Deployment) {
 	// Update the deployment set with desired spec
 	rbdDeploymentSpec.DeepCopyInto(&deploy.Spec)
 
+	if enableOMAPGenerator {
+		deploy.Spec.Template.Spec.Containers = append(
+			deploy.Spec.Template.Spec.Containers,
+			corev1.Container{Name: templates.OMAPGeneratorContainer.Name})
+	}
+
 	// Find and Update placeholder containers with desired state
 	leaderElectionArg := fmt.Sprintf("--leader-election-namespace=%s", deploy.Namespace)
 
@@ -255,6 +261,11 @@ func SetRBDDeploymentDesiredState(deploy *appsv1.Deployment) {
 			c.Image = sidecarImages.ContainerImages.CSIADDONSImageURL
 			c.Args = append(c.Args, leaderElectionArg)
 
+		case templates.OMAPGeneratorContainer.Name:
+			templates.OMAPGeneratorContainer.DeepCopyInto(c)
+			c.Image = sidecarImages.ContainerImages.CephCSIImageURL
+			c.Args = append(c.Args, fmt.Sprintf("--drivername=%s", GetRBDDriverName()))
+
 		case rbdDeploymentContainerName:
 			c.Image = sidecarImages.ContainerImages.CephCSIImageURL
 		}

pkg/templates/csisidecars.go

@@ -162,6 +162,36 @@ var CSIAddonsContainer = corev1.Container{
 	ImagePullPolicy: corev1.PullIfNotPresent,
 }
 
+var OMAPGeneratorContainer = corev1.Container{
+	Name:            "csi-omap-generator",
+	ImagePullPolicy: corev1.PullIfNotPresent,
+	Args: []string{
+		"--type=controller",
+		"--drivernamespace=$(DRIVER_NAMESPACE)",
+		"--v=5",
+	},
+	Env: []corev1.EnvVar{
+		{
+			Name: "DRIVER_NAMESPACE",
+			ValueFrom: &corev1.EnvVarSource{
+				FieldRef: &corev1.ObjectFieldSelector{
+					FieldPath: "metadata.namespace",
+				},
+			},
+		},
+	},
+	VolumeMounts: []corev1.VolumeMount{
+		{
+			Name:      "ceph-csi-configs",
+			MountPath: DefaultCephCSIConfigPath,
+		},
+		{
+			Name:      "keys-tmp-dir",
+			MountPath: DefaultTmpDir,
+		},
+	},
+}
+
 var DriverRegistrar = corev1.Container{
 	Name:            "csi-driver-registrar",
 	ImagePullPolicy: corev1.PullIfNotPresent,

pkg/templates/defaults.go

@@ -24,7 +24,8 @@ const (
 	DefaultCSIAddonsSocketPath   = "unix:///csi/csi-addons.sock"
 	DefaultSocketDir             = "/csi"
 	DefaultStagingPath           = "/var/lib/kubelet/plugins/kubernetes.io/csi/"
-
+	DefaultCephCSIConfigPath     = "/etc/ceph-csi-config"
+	DefaultTmpDir                = "/tmp/csi/keys"
 	// configmap names
 	MonConfigMapName        = "ceph-csi-configs"
 	EncryptionConfigMapName = "ceph-csi-kms-config"