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cleanup: refactor deeply nested if statements in internal/rbd

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Refactored deeply nested if statement in internal/rbd to
reduce cognitive complexity.

Signed-off-by: Rakshith R <rar@redhat.com>
This commit is contained in:
Rakshith R
2021-04-05 10:10:00 +05:30
committed by mergify[bot]
parent d4cfd7bef9
commit 020cded581
5 changed files with 79 additions and 77 deletions
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65
internal/rbd/nodeserver.go
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@ -267,18 +267,16 @@ func (ns *NodeServer) stageTransaction(ctx context.Context, req *csi.NodeStageVo
return transaction, err
}
}
if !util.CheckKernelSupport(kernelRelease, deepFlattenSupport) {
if !skipForceFlatten {
feature, err = volOptions.checkImageChainHasFeature(ctx, librbd.FeatureDeepFlatten)
if !util.CheckKernelSupport(kernelRelease, deepFlattenSupport) && !skipForceFlatten {
feature, err = volOptions.checkImageChainHasFeature(ctx, librbd.FeatureDeepFlatten)
if err != nil {
return transaction, err
}
if feature {
err = volOptions.flattenRbdImage(ctx, cr, true, rbdHardMaxCloneDepth, rbdSoftMaxCloneDepth)
if err != nil {
return transaction, err
}
if feature {
err = volOptions.flattenRbdImage(ctx, cr, true, rbdHardMaxCloneDepth, rbdSoftMaxCloneDepth)
if err != nil {
return transaction, err
}
}
}
}
// Mapping RBD image
@ -468,9 +466,10 @@ func (ns *NodeServer) mountVolumeToStagePath(ctx context.Context, req *csi.NodeS
if existingFormat == "" && !staticVol && !readOnly {
args := []string{}
if fsType == "ext4" {
switch fsType {
case "ext4":
args = []string{"-m0", "-Enodiscard,lazy_itable_init=1,lazy_journal_init=1", devicePath}
} else if fsType == "xfs" {
case "xfs":
args = []string{"-K", devicePath}
// always disable reflink
// TODO: make enabling an option, see ceph/ceph-csi#1256
@ -531,30 +530,30 @@ func (ns *NodeServer) mountVolume(ctx context.Context, stagingPath string, req *
func (ns *NodeServer) createTargetMountPath(ctx context.Context, mountPath string, isBlock bool) (bool, error) {
// Check if that mount path exists properly
notMnt, err := mount.IsNotMountPoint(ns.mounter, mountPath)
if err != nil {
if os.IsNotExist(err) {
if isBlock {
// #nosec
pathFile, e := os.OpenFile(mountPath, os.O_CREATE|os.O_RDWR, 0750)
if e != nil {
util.DebugLog(ctx, "Failed to create mountPath:%s with error: %v", mountPath, err)
return notMnt, status.Error(codes.Internal, e.Error())
}
if err = pathFile.Close(); err != nil {
util.DebugLog(ctx, "Failed to close mountPath:%s with error: %v", mountPath, err)
return notMnt, status.Error(codes.Internal, err.Error())
}
} else {
// Create a directory
if err = util.CreateMountPoint(mountPath); err != nil {
return notMnt, status.Error(codes.Internal, err.Error())
}
}
notMnt = true
} else {
return false, status.Error(codes.Internal, err.Error())
if err == nil {
return notMnt, err
}
if !os.IsNotExist(err) {
return false, status.Error(codes.Internal, err.Error())
}
if isBlock {
// #nosec
pathFile, e := os.OpenFile(mountPath, os.O_CREATE|os.O_RDWR, 0750)
if e != nil {
util.DebugLog(ctx, "Failed to create mountPath:%s with error: %v", mountPath, err)
return notMnt, status.Error(codes.Internal, e.Error())
}
if err = pathFile.Close(); err != nil {
util.DebugLog(ctx, "Failed to close mountPath:%s with error: %v", mountPath, err)
return notMnt, status.Error(codes.Internal, err.Error())
}
} else {
// Create a mountpath directory
if err = util.CreateMountPoint(mountPath); err != nil {
return notMnt, status.Error(codes.Internal, err.Error())
}
}
notMnt = true
return notMnt, err
}