util: Removing JoinError in favor of fmt.Errorf

Signed-off-by: Mike Perez <thingee@gmail.com>

internal/cephfs/core/volume.go

@@ -140,7 +140,7 @@ func (s *subVolumeClient) GetVolumeRootPathCeph(ctx context.Context) (string, er
 	if err != nil {
 		log.ErrorLog(ctx, "failed to get the rootpath for the vol %s: %s", s.VolID, err)
 		if errors.Is(err, rados.ErrNotFound) {
-			return "", util.JoinErrors(cerrors.ErrVolumeNotFound, err)
+			return "", fmt.Errorf("Failed as %w (internal %w)", cerrors.ErrVolumeNotFound, err)
 		}
 
 		return "", err
@@ -303,10 +303,10 @@ func (s *subVolumeClient) PurgeVolume(ctx context.Context, force bool) error {
 	if err != nil {
 		log.ErrorLog(ctx, "failed to purge subvolume %s in fs %s: %s", s.VolID, s.FsName, err)
 		if strings.Contains(err.Error(), cerrors.VolumeNotEmpty) {
-			return util.JoinErrors(cerrors.ErrVolumeHasSnapshots, err)
+			return fmt.Errorf("Failed as %w (internal %w)", cerrors.ErrVolumeHasSnapshots, err)
 		}
 		if errors.Is(err, rados.ErrNotFound) {
-			return util.JoinErrors(cerrors.ErrVolumeNotFound, err)
+			return fmt.Errorf("Failed as %w (internal %w)", cerrors.ErrVolumeNotFound, err)
 		}
 
 		return err

internal/cephfs/store/volumeoptions.go

@@ -390,7 +390,7 @@ func NewVolumeOptionsFromVolID(
 	if err != nil {
 		err = fmt.Errorf("error decoding volume ID (%s): %w", volID, err)
 
-		return nil, nil, util.JoinErrors(cerrors.ErrInvalidVolID, err)
+		return nil, nil, fmt.Errorf("Failed as %w (internal %w)", cerrors.ErrInvalidVolID, err)
 	}
 	volOptions.ClusterID = vi.ClusterID
 	vid.VolumeID = volID

internal/journal/omap.go

@@ -164,7 +164,7 @@ func setOMapKeys(
 
 func omapPoolError(err error) error {
 	if errors.Is(err, rados.ErrNotFound) {
-		return util.JoinErrors(util.ErrPoolNotFound, err)
+		return fmt.Errorf("Failed as %w (internal %w)", util.ErrPoolNotFound, err)
 	}
 
 	return err

internal/rbd/rbd_util.go

@@ -510,7 +510,7 @@ func (ri *rbdImage) open() (*librbd.Image, error) {
 	image, err := librbd.OpenImage(ri.ioctx, ri.RbdImageName, librbd.NoSnapshot)
 	if err != nil {
 		if errors.Is(err, librbd.ErrNotFound) {
-			err = util.JoinErrors(ErrImageNotFound, err)
+			err = fmt.Errorf("Failed as %w (internal %w)", ErrImageNotFound, err)
 		}
 
 		return nil, err
@@ -896,7 +896,7 @@ func (ri *rbdImage) flatten() error {
 		// rbd image flatten will fail if the rbd image does not have a parent
 		parent, pErr := ri.getParentName()
 		if pErr != nil {
-			return util.JoinErrors(err, pErr)
+			return fmt.Errorf("Failed as %w (internal %w)", err, pErr)
 		}
 		if parent == "" {
 			return nil
@@ -1448,7 +1448,7 @@ func (ri *rbdImage) deleteSnapshot(ctx context.Context, pOpts *rbdSnapshot) erro
 	}
 	err = snap.Remove()
 	if errors.Is(err, librbd.ErrNotFound) {
-		return util.JoinErrors(ErrSnapNotFound, err)
+		return fmt.Errorf("Failed as %w (internal %w)", ErrSnapNotFound, err)
 	}
 
 	return err
@@ -1779,7 +1779,7 @@ func lookupRBDImageMetadataStash(metaDataPath string) (rbdImageMetadataStash, er
 			return imgMeta, fmt.Errorf("failed to read stashed JSON image metadata from path (%s): %w", fPath, err)
 		}
 
-		return imgMeta, util.JoinErrors(ErrMissingStash, err)
+		return imgMeta, fmt.Errorf("Failed as %w (internal %w)", ErrMissingStash, err)
 	}
 
 	err = json.Unmarshal(encodedBytes, &imgMeta)

internal/util/cephcmds.go

@@ -235,7 +235,7 @@ func CreateObject(ctx context.Context, monitors string, cr *Credentials, poolNam
 	ioctx, err := conn.GetIoctx(poolName)
 	if err != nil {
 		if errors.Is(err, ErrPoolNotFound) {
-			err = JoinErrors(ErrObjectNotFound, err)
+			err = fmt.Errorf("Failed as %w (internal %w)", ErrObjectNotFound, err)
 		}
 
 		return err
@@ -248,7 +248,7 @@ func CreateObject(ctx context.Context, monitors string, cr *Credentials, poolNam
 
 	err = ioctx.Create(objectName, rados.CreateExclusive)
 	if errors.Is(err, rados.ErrObjectExists) {
-		return JoinErrors(ErrObjectExists, err)
+		return fmt.Errorf("Failed as %w (internal %w)", ErrObjectExists, err)
 	} else if err != nil {
 		log.ErrorLog(ctx, "failed creating omap (%s) in pool (%s): (%v)", objectName, poolName, err)
 
@@ -271,7 +271,7 @@ func RemoveObject(ctx context.Context, monitors string, cr *Credentials, poolNam
 	ioctx, err := conn.GetIoctx(poolName)
 	if err != nil {
 		if errors.Is(err, ErrPoolNotFound) {
-			err = JoinErrors(ErrObjectNotFound, err)
+			err = fmt.Errorf("Failed as %w (internal %w)", ErrObjectNotFound, err)
 		}
 
 		return err
@@ -284,7 +284,7 @@ func RemoveObject(ctx context.Context, monitors string, cr *Credentials, poolNam
 
 	err = ioctx.Delete(oMapName)
 	if errors.Is(err, rados.ErrNotFound) {
-		return JoinErrors(ErrObjectNotFound, err)
+		return fmt.Errorf("Failed as %w (internal %w)", ErrObjectNotFound, err)
 	} else if err != nil {
 		log.ErrorLog(ctx, "failed removing omap (%s) in pool (%s): (%v)", oMapName, poolName, err)
 

internal/util/connection.go

@@ -96,7 +96,7 @@ func (cc *ClusterConnection) GetIoctx(pool string) (*rados.IOContext, error) {
 	if err != nil {
 		// ErrNotFound indicates the Pool was not found
 		if errors.Is(err, rados.ErrNotFound) {
-			err = JoinErrors(ErrPoolNotFound, err)
+			err = fmt.Errorf("Failed as %w (internal %w)", ErrPoolNotFound, err)
 		} else {
 			err = fmt.Errorf("failed to open IOContext for pool %s: %w", pool, err)
 		}

internal/util/errors.go

@@ -18,7 +18,6 @@ package util
 
 import (
 	"errors"
-	"fmt"
 )
 
 var (
@@ -38,28 +37,3 @@ var (
 	// ErrMissingConfigForMonitor is returned when clusterID is not found for the mon.
 	ErrMissingConfigForMonitor = errors.New("missing configuration of cluster ID for monitor")
 )
-
-type pairError struct {
-	first  error
-	second error
-}
-
-func (e pairError) Error() string {
-	return fmt.Sprintf("%v: %v", e.first, e.second)
-}
-
-// Is checks if target error is wrapped in the first error.
-func (e pairError) Is(target error) bool {
-	return errors.Is(e.first, target)
-}
-
-// Unwrap returns the second error.
-func (e pairError) Unwrap() error {
-	return e.second
-}
-
-// JoinErrors combines two errors. Of the returned error, Is() follows the first
-// branch, Unwrap() follows the second branch.
-func JoinErrors(e1, e2 error) error {
-	return pairError{e1, e2}
-}