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cleanup: use errors.As() in rbd/controllerserver methods
See-also: https://github.com/golang/go/wiki/ErrorValueFAQ#how-should-i-change-my-error-handling-code-to-work-with-the-new-features Signed-off-by: Niels de Vos <ndevos@redhat.com>
This commit is contained in:
Niels de Vos
mergify[bot]
parent
91ade42a32
commit
267c709194
@ -18,6 +18,7 @@ package rbd
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import (
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"context"
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"errors"
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csicommon "github.com/ceph/ceph-csi/internal/csi-common"
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"github.com/ceph/ceph-csi/internal/journal"
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@ -199,7 +200,8 @@ func (cs *ControllerServer) CreateVolume(ctx context.Context, req *csi.CreateVol
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found, err := rbdVol.Exists(ctx)
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if err != nil {
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if _, ok := err.(ErrVolNameConflict); ok {
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var evnc ErrVolNameConflict
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if errors.As(err, &evnc) {
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return nil, status.Error(codes.AlreadyExists, err.Error())
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}
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return nil, status.Error(codes.Internal, err.Error())
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@ -395,11 +397,13 @@ func (cs *ControllerServer) checkSnapshotSource(ctx context.Context, req *csi.Cr
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rbdSnap := &rbdSnapshot{}
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if err := genSnapFromSnapID(ctx, rbdSnap, snapshotID, cr); err != nil {
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if _, ok := err.(ErrSnapNotFound); !ok {
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var esnf ErrSnapNotFound
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if !errors.As(err, &esnf) {
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return nil, status.Error(codes.Internal, err.Error())
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}
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if _, ok := err.(util.ErrPoolNotFound); ok {
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var epnf util.ErrPoolNotFound
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if errors.As(err, &epnf) {
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klog.Errorf(util.Log(ctx, "failed to get backend snapshot for %s: %v"), snapshotID, err)
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return nil, status.Error(codes.InvalidArgument, err.Error())
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}
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@ -496,14 +500,16 @@ func (cs *ControllerServer) DeleteVolume(ctx context.Context, req *csi.DeleteVol
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rbdVol, err = genVolFromVolID(ctx, volumeID, cr, req.GetSecrets())
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if err != nil {
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switch err.(type) {
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case util.ErrPoolNotFound:
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var epnf util.ErrPoolNotFound
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if errors.As(err, &epnf) {
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klog.Warningf(util.Log(ctx, "failed to get backend volume for %s: %v"), volumeID, err)
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return &csi.DeleteVolumeResponse{}, nil
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}
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// If error is ErrInvalidVolID it could be a version 1.0.0 or lower volume, attempt
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// to process it as such
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case ErrInvalidVolID:
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var eivi ErrInvalidVolID
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if errors.As(err, &eivi) {
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if isLegacyVolumeID(volumeID) {
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klog.V(2).Infof(util.Log(ctx, "attempting deletion of potential legacy volume (%s)"), volumeID)
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return cs.DeleteLegacyVolume(ctx, req, cr)
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@ -511,17 +517,20 @@ func (cs *ControllerServer) DeleteVolume(ctx context.Context, req *csi.DeleteVol
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// Consider unknown volumeID as a successfully deleted volume
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return &csi.DeleteVolumeResponse{}, nil
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}
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// if error is ErrKeyNotFound, then a previous attempt at deletion was complete
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// or partially complete (image and imageOMap are garbage collected already), hence return
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// success as deletion is complete
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case util.ErrKeyNotFound:
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var eknf util.ErrKeyNotFound
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if errors.As(err, &eknf) {
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klog.Warningf(util.Log(ctx, "Failed to volume options for %s: %v"), volumeID, err)
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return &csi.DeleteVolumeResponse{}, nil
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}
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// All errors other than ErrImageNotFound should return an error back to the caller
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case ErrImageNotFound:
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default:
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var einf ErrImageNotFound
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if !errors.As(err, &einf) {
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return nil, status.Error(codes.Internal, err.Error())
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}
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@ -624,13 +633,15 @@ func (cs *ControllerServer) CreateSnapshot(ctx context.Context, req *csi.CreateS
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// Fetch source volume information
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rbdVol, err = genVolFromVolID(ctx, req.GetSourceVolumeId(), cr, req.GetSecrets())
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if err != nil {
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switch err.(type) {
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case ErrImageNotFound:
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var einf ErrImageNotFound
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var epnf util.ErrPoolNotFound
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// nolint:gocritic // this ifElseChain can not be rewritten to a switch statement
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if errors.As(err, &einf) {
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err = status.Errorf(codes.NotFound, "source Volume ID %s not found", req.GetSourceVolumeId())
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case util.ErrPoolNotFound:
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} else if errors.As(err, &epnf) {
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klog.Errorf(util.Log(ctx, "failed to get backend volume for %s: %v"), req.GetSourceVolumeId(), err)
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err = status.Errorf(codes.NotFound, err.Error())
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default:
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} else {
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err = status.Errorf(codes.Internal, err.Error())
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}
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return nil, err
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@ -664,7 +675,8 @@ func (cs *ControllerServer) CreateSnapshot(ctx context.Context, req *csi.CreateS
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// check for the requested source volume id and already allocated source volume id
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found, err := checkSnapCloneExists(ctx, rbdVol, rbdSnap, cr)
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if err != nil {
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if _, ok := err.(util.ErrSnapNameConflict); ok {
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var esnc util.ErrSnapNameConflict
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if errors.As(err, &esnc) {
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return nil, status.Error(codes.AlreadyExists, err.Error())
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}
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return nil, status.Errorf(codes.Internal, err.Error())
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@ -866,7 +878,8 @@ func (cs *ControllerServer) DeleteSnapshot(ctx context.Context, req *csi.DeleteS
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if err = genSnapFromSnapID(ctx, rbdSnap, snapshotID, cr); err != nil {
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// if error is ErrPoolNotFound, the pool is already deleted we dont
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// need to worry about deleting snapshot or omap data, return success
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if _, ok := err.(util.ErrPoolNotFound); ok {
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var epnf util.ErrPoolNotFound
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if errors.As(err, &epnf) {
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klog.Warningf(util.Log(ctx, "failed to get backend snapshot for %s: %v"), snapshotID, err)
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return &csi.DeleteSnapshotResponse{}, nil
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}
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@ -874,7 +887,8 @@ func (cs *ControllerServer) DeleteSnapshot(ctx context.Context, req *csi.DeleteS
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// if error is ErrKeyNotFound, then a previous attempt at deletion was complete
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// or partially complete (snap and snapOMap are garbage collected already), hence return
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// success as deletion is complete
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if _, ok := err.(util.ErrKeyNotFound); ok {
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var eknf util.ErrKeyNotFound
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if errors.As(err, &eknf) {
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return &csi.DeleteSnapshotResponse{}, nil
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}
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@ -975,13 +989,15 @@ func (cs *ControllerServer) ControllerExpandVolume(ctx context.Context, req *csi
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rbdVol, err = genVolFromVolID(ctx, volID, cr, req.GetSecrets())
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if err != nil {
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switch err.(type) {
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case ErrImageNotFound:
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var einf ErrImageNotFound
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var epnf util.ErrPoolNotFound
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// nolint:gocritic // this ifElseChain can not be rewritten to a switch statement
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if errors.As(err, &einf) {
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err = status.Errorf(codes.NotFound, "volume ID %s not found", volID)
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case util.ErrPoolNotFound:
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} else if errors.As(err, &epnf) {
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klog.Errorf(util.Log(ctx, "failed to get backend volume for %s: %v"), volID, err)
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err = status.Errorf(codes.NotFound, err.Error())
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default:
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} else {
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err = status.Errorf(codes.Internal, err.Error())
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}
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return nil, err
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