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cephfs: use string const for cli error comparison

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we should not return the CLI errors in GRPC errors
we need to return proper readable error messages
to the user for better understanding and better
debugging.

updates #1242

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
This commit is contained in:
Madhu Rajanna 2020-08-17 11:28:59 +05:30 committed by mergify[bot]
parent 78c1e781be
commit 0bd45a5eb1
3 changed files with 38 additions and 23 deletions
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41
internal/cephfs/errors.go
View File

@ -18,27 +18,42 @@ package cephfs
import (
"errors"
"fmt"
)
// Error strings for comparison with CLI errors.
const (
// volumeNotFound is returned when a subvolume is not found in CephFS.
volumeNotFound = "Error ENOENT"
// invalidCommand is returned when a command is not known to the cluster
invalidCommand = "Error EINVAL"
// snapNotFound is returned when snap name passed is not found in the list
// of snapshots for the given image.
snapNotFound = "Error ENOENT"
// snapProtectionExist is returned when the snapshot is already protected
snapProtectionExist = "Error EEXIST"
)
var (
// ErrCloneInProgress is returned when snapshot clone state is `in progress`
ErrCloneInProgress = errors.New("in progress")
// ErrInvalidVolID is returned when a CSI passed VolumeID is not conformant to any known volume ID
// formats.
ErrInvalidVolID = errors.New("invalid VolumeID")
// ErrNonStaticVolume is returned when a volume is detected as not being
// statically provisioned.
ErrNonStaticVolume = errors.New("volume not static")
// ErrVolNotEmpty is returned when a subvolume has snapshots in it.
ErrVolNotEmpty = fmt.Errorf("%v", "Error ENOTEMPTY")
// ErrVolumeNotFound is returned when a subvolume is not found in CephFS.
ErrVolumeNotFound = fmt.Errorf("%v", "Error ENOENT")
// ErrInvalidCommand is returned when a command is not known to the cluster
ErrInvalidCommand = fmt.Errorf("%v", "Error EINVAL")
// ErrSnapNotFound is returned when snap name passed is not found in the list of snapshots for the
// given image.
ErrSnapNotFound = fmt.Errorf("%v", "Error ENOENT")
// ErrSnapProtectionExist is returned when the snapshot is already protected
ErrSnapProtectionExist = fmt.Errorf("%v", "Error EEXIST")
// ErrCloneInProgress is returned when snapshot clone state is `in progress`
ErrCloneInProgress = fmt.Errorf("in progress")
ErrSnapProtectionExist = errors.New("snapshot protection already exists")
// ErrSnapNotFound is returned when snap name passed is not found in the list
// of snapshots for the given image.
ErrSnapNotFound = errors.New("snapshot not found")
// ErrVolumeNotFound is returned when a subvolume is not found in CephFS.
ErrVolumeNotFound = errors.New("volume not found")
// ErrInvalidCommand is returned when a command is not known to the cluster
ErrInvalidCommand = errors.New("invalid command")
)

10
internal/cephfs/snapshot.go
View File

@ -127,8 +127,8 @@ func getSnapshotInfo(ctx context.Context, volOptions *volumeOptions, cr *util.Cr
"ceph",
args[:]...)
if err != nil {
if strings.Contains(err.Error(), ErrSnapNotFound.Error()) {
return snapshotInfo{}, err
if strings.Contains(err.Error(), snapNotFound) {
return snapshotInfo{}, ErrSnapNotFound
}
util.ErrorLog(ctx, "failed to get subvolume snapshot info %s %s(%s) in fs %s", string(snapID), string(volID), err, volOptions.FsName)
return snapshotInfo{}, err
@ -158,7 +158,7 @@ func protectSnapshot(ctx context.Context, volOptions *volumeOptions, cr *util.Cr
"ceph",
args[:]...)
if err != nil {
if strings.Contains(err.Error(), ErrSnapProtectionExist.Error()) {
if strings.Contains(err.Error(), snapProtectionExist) {
return nil
}
util.ErrorLog(ctx, "failed to protect subvolume snapshot %s %s(%s) in fs %s", string(snapID), string(volID), err, volOptions.FsName)
@ -191,7 +191,7 @@ func unprotectSnapshot(ctx context.Context, volOptions *volumeOptions, cr *util.
if err != nil {
// Incase the snap is already unprotected we get ErrSnapProtectionExist error code
// in that case we are safe and we could discard this error.
if strings.Contains(err.Error(), ErrSnapProtectionExist.Error()) {
if strings.Contains(err.Error(), snapProtectionExist) {
return nil
}
util.ErrorLog(ctx, "failed to unprotect subvolume snapshot %s %s(%s) in fs %s", string(snapID), string(volID), err, volOptions.FsName)
@ -230,7 +230,7 @@ func cloneSnapshot(ctx context.Context, parentVolOptions *volumeOptions, cr *uti
if err != nil {
util.ErrorLog(ctx, "failed to clone subvolume snapshot %s %s(%s) in fs %s", string(cloneID), string(volID), err, parentVolOptions.FsName)
if strings.HasPrefix(err.Error(), ErrVolumeNotFound.Error()) {
if strings.HasPrefix(err.Error(), volumeNotFound) {
return ErrVolumeNotFound
}
return err

10
internal/cephfs/volume.go
View File

@ -73,7 +73,7 @@ func getVolumeRootPathCeph(ctx context.Context, volOptions *volumeOptions, cr *u
if err != nil {
util.ErrorLog(ctx, "failed to get the rootpath for the vol %s(%s) stdError %s", string(volID), err, stderr)
if strings.Contains(stderr, ErrVolumeNotFound.Error()) {
if strings.Contains(stderr, volumeNotFound) {
return "", util.JoinErrors(ErrVolumeNotFound, err)
}
@ -101,11 +101,11 @@ func getSubVolumeInfo(ctx context.Context, volOptions *volumeOptions, cr *util.C
"--keyfile="+cr.KeyFile)
if err != nil {
util.ErrorLog(ctx, "failed to get subvolume info for the vol %s(%s)", string(volID), err)
if strings.HasPrefix(err.Error(), ErrVolumeNotFound.Error()) {
if strings.HasPrefix(err.Error(), volumeNotFound) {
return info, ErrVolumeNotFound
}
// Incase the error is other than invalid command return error to the caller.
if !strings.Contains(err.Error(), ErrInvalidCommand.Error()) {
if !strings.Contains(err.Error(), invalidCommand) {
return info, ErrInvalidCommand
}
@ -222,7 +222,7 @@ func resizeVolume(ctx context.Context, volOptions *volumeOptions, cr *util.Crede
return nil
}
// Incase the error is other than invalid command return error to the caller.
if !strings.Contains(err.Error(), ErrInvalidCommand.Error()) {
if !strings.Contains(err.Error(), invalidCommand) {
util.ErrorLog(ctx, "failed to resize subvolume %s(%s) in fs %s", string(volID), err, volOptions.FsName)
return err
}
@ -252,7 +252,7 @@ func purgeVolume(ctx context.Context, volID volumeID, cr *util.Credentials, volO
err := execCommandErr(ctx, "ceph", arg...)
if err != nil {
util.ErrorLog(ctx, "failed to purge subvolume %s(%s) in fs %s", string(volID), err, volOptions.FsName)
if strings.Contains(err.Error(), ErrVolumeNotFound.Error()) {
if strings.Contains(err.Error(), volumeNotFound) {
return util.JoinErrors(ErrVolumeNotFound, err)
}
return err