journal: fix connection problem with groupjournal

Same group jounral config need to be reused
for multiple connection where different monitors
and users are used, for that reason create a unique
connection each time.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

internal/journal/volumegroupjournal.go

@@ -32,15 +32,7 @@ const (
 )
 
 type VolumeGroupJournal interface {
-	// Connect establishes a new connection to a ceph cluster for journal metadata.
-	Connect(
-		monitors,
-		namespace string,
-		cr *util.Credentials) error
-	// Destroy frees any resources and invalidates the journal connection.
 	Destroy()
-	// SetNamespace sets the namespace for the journal.
-	SetNamespace(ns string)
 	CheckReservation(
 		ctx context.Context,
 		journalPool,
@@ -78,16 +70,20 @@ type VolumeGroupJournal interface {
 		volumeID string) error
 }
 
-// volumeGroupJournalConfig contains the configuration and connection details.
+// VolumeGroupJournalConfig contains the configuration.
-type volumeGroupJournalConfig struct {
+type VolumeGroupJournalConfig struct {
-	*Config
+	Config
-	*Connection
+}
+
+type VolumeGroupJournalConnection struct {
+	config     *VolumeGroupJournalConfig
+	connection *Connection
 }
 
 // NewCSIVolumeGroupJournal returns an instance of VolumeGroupJournal for groups.
-func NewCSIVolumeGroupJournal(suffix string) VolumeGroupJournal {
+func NewCSIVolumeGroupJournal(suffix string) VolumeGroupJournalConfig {
-	return &volumeGroupJournalConfig{
+	return VolumeGroupJournalConfig{
-		Config: &Config{
+		Config: Config{
 			csiDirectory:            "csi.groups." + suffix,
 			csiNameKeyPrefix:        "csi.volume.group.",
 			cephUUIDDirectoryPrefix: "csi.volume.group.",
@@ -98,35 +94,42 @@ func NewCSIVolumeGroupJournal(suffix string) VolumeGroupJournal {
 	}
 }
 
-func (sgj *volumeGroupJournalConfig) SetNamespace(ns string) {
+// SetNamespace sets the namespace for the journal.
-	sgj.Config.namespace = ns
+func (vgc *VolumeGroupJournalConfig) SetNamespace(ns string) {
+	vgc.Config.namespace = ns
 }
 
 // NewCSIVolumeGroupJournalWithNamespace returns an instance of VolumeGroupJournal for
 // volume groups using a predetermined namespace value.
-func NewCSIVolumeGroupJournalWithNamespace(suffix, ns string) VolumeGroupJournal {
+func NewCSIVolumeGroupJournalWithNamespace(suffix, ns string) VolumeGroupJournalConfig {
 	j := NewCSIVolumeGroupJournal(suffix)
 	j.SetNamespace(ns)
 
 	return j
 }
 
-func (sgj *volumeGroupJournalConfig) Connect(
+// Connect establishes a new connection to a ceph cluster for journal metadata.
+func (vgc *VolumeGroupJournalConfig) Connect(
 	monitors,
 	namespace string,
 	cr *util.Credentials,
-) error {
+) (VolumeGroupJournal, error) {
-	conn, err := sgj.Config.Connect(monitors, namespace, cr)
+	vgjc := &VolumeGroupJournalConnection{}
+	vgjc.config = &VolumeGroupJournalConfig{
+		Config: vgc.Config,
+	}
+	conn, err := vgc.Config.Connect(monitors, namespace, cr)
 	if err != nil {
-		return err
+		return nil, err
 	}
-	sgj.Connection = conn
+	vgjc.connection = conn
 
-	return nil
+	return vgjc, nil
 }
 
-func (sgj *volumeGroupJournalConfig) Destroy() {
+// Destroy frees any resources and invalidates the journal connection.
-	sgj.Connection.Destroy()
+func (vgjc *VolumeGroupJournalConnection) Destroy() {
+	vgjc.connection.Destroy()
 }
 
 // VolumeGroupData contains the GroupUUID and VolumeGroupAttributes for a
@@ -162,11 +165,11 @@ Return values:
     reservation found.
   - error: non-nil in case of any errors.
 */
-func (sgj *volumeGroupJournalConfig) CheckReservation(ctx context.Context,
+func (vgjc *VolumeGroupJournalConnection) CheckReservation(ctx context.Context,
 	journalPool, reqName, namePrefix string,
 ) (*VolumeGroupData, error) {
 	var (
-		cj           = sgj.Config
+		cj           = vgjc.config
 		volGroupData = &VolumeGroupData{}
 	)
 
@@ -175,7 +178,7 @@ func (sgj *volumeGroupJournalConfig) CheckReservation(ctx context.Context,
 		cj.csiNameKeyPrefix + reqName,
 	}
 	values, err := getOMapValues(
-		ctx, sgj.Connection, journalPool, cj.namespace, cj.csiDirectory,
+		ctx, vgjc.connection, journalPool, cj.namespace, cj.csiDirectory,
 		cj.commonPrefix, fetchKeys)
 	if err != nil {
 		if errors.Is(err, util.ErrKeyNotFound) || errors.Is(err, util.ErrPoolNotFound) {
@@ -195,13 +198,13 @@ func (sgj *volumeGroupJournalConfig) CheckReservation(ctx context.Context,
 	}
 	volGroupData.GroupUUID = objUUID
 
-	savedVolumeGroupAttributes, err := sgj.GetVolumeGroupAttributes(ctx, journalPool,
+	savedVolumeGroupAttributes, err := vgjc.GetVolumeGroupAttributes(ctx, journalPool,
 		objUUID)
 	if err != nil {
 		// error should specifically be not found, for image to be absent, any other error
 		// is not conclusive, and we should not proceed
 		if errors.Is(err, util.ErrKeyNotFound) {
-			err = sgj.UndoReservation(ctx, journalPool,
+			err = vgjc.UndoReservation(ctx, journalPool,
 				generateVolumeGroupName(namePrefix, objUUID), reqName)
 		}
 
@@ -239,11 +242,11 @@ Input arguments:
   - groupID: ID of the volume group, generated from the UUID
   - reqName: Request name for the volume group
 */
-func (sgj *volumeGroupJournalConfig) UndoReservation(ctx context.Context,
+func (vgjc *VolumeGroupJournalConnection) UndoReservation(ctx context.Context,
 	csiJournalPool, groupID, reqName string,
 ) error {
 	// delete volume UUID omap (first, inverse of create order)
-	cj := sgj.Config
+	cj := vgjc.config
 	if groupID != "" {
 		if len(groupID) < uuidEncodedLength {
 			return fmt.Errorf("unable to parse UUID from %s, too short", groupID)
@@ -256,8 +259,8 @@ func (sgj *volumeGroupJournalConfig) UndoReservation(ctx context.Context,
 
 		err := util.RemoveObject(
 			ctx,
-			sgj.Connection.monitors,
+			vgjc.connection.monitors,
-			sgj.Connection.cr,
+			vgjc.connection.cr,
 			csiJournalPool,
 			cj.namespace,
 			cj.cephUUIDDirectoryPrefix+groupUUID)
@@ -271,7 +274,7 @@ func (sgj *volumeGroupJournalConfig) UndoReservation(ctx context.Context,
 	}
 
 	// delete the request name key (last, inverse of create order)
-	err := removeMapKeys(ctx, sgj.Connection, csiJournalPool, cj.namespace, cj.csiDirectory,
+	err := removeMapKeys(ctx, vgjc.connection, csiJournalPool, cj.namespace, cj.csiDirectory,
 		[]string{cj.csiNameKeyPrefix + reqName})
 	if err != nil {
 		log.ErrorLog(ctx, "failed removing oMap key %s (%s)", cj.csiNameKeyPrefix+reqName, err)
@@ -299,11 +302,11 @@ Return values:
   - string: Contains the VolumeGroup name that was reserved for the passed in reqName
   - error: non-nil in case of any errors
 */
-func (sgj *volumeGroupJournalConfig) ReserveName(ctx context.Context,
+func (vgjc *VolumeGroupJournalConnection) ReserveName(ctx context.Context,
 	journalPool string, journalPoolID int64,
 	reqName, namePrefix string,
 ) (string, string, error) {
-	cj := sgj.Config
+	cj := vgjc.config
 
 	// Create the UUID based omap first, to reserve the same and avoid conflicts
 	// NOTE: If any service loss occurs post creation of the UUID directory, and before
@@ -311,8 +314,8 @@ func (sgj *volumeGroupJournalConfig) ReserveName(ctx context.Context,
 	// UUID directory key will be leaked
 	objUUID, err := reserveOMapName(
 		ctx,
-		sgj.Connection.monitors,
+		vgjc.connection.monitors,
-		sgj.Connection.cr,
+		vgjc.connection.cr,
 		journalPool,
 		cj.namespace,
 		cj.cephUUIDDirectoryPrefix,
@@ -325,7 +328,7 @@ func (sgj *volumeGroupJournalConfig) ReserveName(ctx context.Context,
 	// After generating the UUID Directory omap, we populate the csiDirectory
 	// omap with a key-value entry to map the request to the backend volume group:
 	// `csiNameKeyPrefix + reqName: nameKeyVal`
-	err = setOMapKeys(ctx, sgj.Connection, journalPool, cj.namespace, cj.csiDirectory,
+	err = setOMapKeys(ctx, vgjc.connection, journalPool, cj.namespace, cj.csiDirectory,
 		map[string]string{cj.csiNameKeyPrefix + reqName: nameKeyVal})
 	if err != nil {
 		return "", "", err
@@ -333,7 +336,7 @@ func (sgj *volumeGroupJournalConfig) ReserveName(ctx context.Context,
 	defer func() {
 		if err != nil {
 			log.WarningLog(ctx, "reservation failed for volume group: %s", reqName)
-			errDefer := sgj.UndoReservation(ctx, journalPool, groupName, reqName)
+			errDefer := vgjc.UndoReservation(ctx, journalPool, groupName, reqName)
 			if errDefer != nil {
 				log.WarningLog(ctx, "failed undoing reservation of volume group: %s (%v)", reqName, errDefer)
 			}
@@ -347,7 +350,7 @@ func (sgj *volumeGroupJournalConfig) ReserveName(ctx context.Context,
 	omapValues[cj.csiNameKey] = reqName
 	omapValues[cj.csiImageKey] = groupName
 
-	err = setOMapKeys(ctx, sgj.Connection, journalPool, cj.namespace, oid, omapValues)
+	err = setOMapKeys(ctx, vgjc.connection, journalPool, cj.namespace, oid, omapValues)
 	if err != nil {
 		return "", "", err
 	}
@@ -363,18 +366,18 @@ type VolumeGroupAttributes struct {
 	VolumeSnapshotMap map[string]string // Contains the volumeID and the corresponding snapshotID mapping
 }
 
-func (sgj *volumeGroupJournalConfig) GetVolumeGroupAttributes(
+func (vgjc *VolumeGroupJournalConnection) GetVolumeGroupAttributes(
 	ctx context.Context,
 	pool, objectUUID string,
 ) (*VolumeGroupAttributes, error) {
 	var (
 		err             error
 		groupAttributes = &VolumeGroupAttributes{}
-		cj              = sgj.Config
+		cj              = vgjc.config
 	)
 
 	values, err := listOMapValues(
-		ctx, sgj.Connection, pool, cj.namespace, cj.cephUUIDDirectoryPrefix+objectUUID,
+		ctx, vgjc.connection, pool, cj.namespace, cj.cephUUIDDirectoryPrefix+objectUUID,
 		cj.commonPrefix)
 	if err != nil {
 		if !errors.Is(err, util.ErrKeyNotFound) && !errors.Is(err, util.ErrPoolNotFound) {
@@ -398,14 +401,14 @@ func (sgj *volumeGroupJournalConfig) GetVolumeGroupAttributes(
 	return groupAttributes, nil
 }
 
-func (sgj *volumeGroupJournalConfig) AddVolumeSnapshotMapping(
+func (vgjc *VolumeGroupJournalConnection) AddVolumeSnapshotMapping(
 	ctx context.Context,
 	pool,
 	reservedUUID,
 	volumeID,
 	snapshotID string,
 ) error {
-	err := setOMapKeys(ctx, sgj.Connection, pool, sgj.Config.namespace, sgj.Config.cephUUIDDirectoryPrefix+reservedUUID,
+	err := setOMapKeys(ctx, vgjc.connection, pool, vgjc.config.namespace, vgjc.config.cephUUIDDirectoryPrefix+reservedUUID,
 		map[string]string{volumeID: snapshotID})
 	if err != nil {
 		log.ErrorLog(ctx, "failed adding volume snapshot mapping: %v", err)
@@ -416,13 +419,14 @@ func (sgj *volumeGroupJournalConfig) AddVolumeSnapshotMapping(
 	return nil
 }
 
-func (sgj *volumeGroupJournalConfig) RemoveVolumeSnapshotMapping(
+func (vgjc *VolumeGroupJournalConnection) RemoveVolumeSnapshotMapping(
 	ctx context.Context,
 	pool,
 	reservedUUID,
 	volumeID string,
 ) error {
-	err := removeMapKeys(ctx, sgj.Connection, pool, sgj.Config.namespace, sgj.Config.cephUUIDDirectoryPrefix+reservedUUID,
+	err := removeMapKeys(ctx, vgjc.connection, pool, vgjc.config.namespace,
+		vgjc.config.cephUUIDDirectoryPrefix+reservedUUID,
 		[]string{volumeID})
 	if err != nil {
 		log.ErrorLog(ctx, "failed removing volume snapshot mapping: %v", err)