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util: Add util to fetch encryption type from vol options
Fetch encryption type from vol options. Make fallback type configurable to support RBD (default block) and Ceph FS (default file) Signed-off-by: Marcel Lauhoff <marcel.lauhoff@suse.com>
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@ -80,6 +80,50 @@ func FetchEncryptionKMSID(encrypted, kmsID string) (string, error) {
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return kmsID, nil
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}
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type EncryptionType int
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const (
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EncryptionTypeInvalid EncryptionType = iota
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EncryptionTypeBlock = iota
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EncryptionTypeFile = iota
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)
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func ParseEncryptionType(typeStr string) EncryptionType {
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switch typeStr {
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case "block":
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return EncryptionTypeBlock
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case "file":
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return EncryptionTypeFile
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default:
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return EncryptionTypeInvalid
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}
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}
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func EncryptionTypeString(encType EncryptionType) string {
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switch encType {
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case EncryptionTypeBlock:
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return "block"
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case EncryptionTypeFile:
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return "file"
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case EncryptionTypeInvalid:
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return ""
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default:
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return ""
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}
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}
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// FetchEncryptionType returns encryptionType specified in volOptions.
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// If not specified, use fallback. If specified but invalid, return
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// invalid.
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func FetchEncryptionType(volOptions map[string]string, fallback EncryptionType) EncryptionType {
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encType, ok := volOptions["encryptionType"]
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if !ok {
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return fallback
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}
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return ParseEncryptionType(encType)
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}
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// NewVolumeEncryption creates a new instance of VolumeEncryption and
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// configures the DEKStore. If the KMS does not provide a DEKStore interface,
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// the VolumeEncryption will be created *and* a ErrDEKStoreNeeded is returned.
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