huaxingao commented on code in PR #13225:
URL: https://github.com/apache/iceberg/pull/13225#discussion_r2483981686
##########
core/src/main/java/org/apache/iceberg/rest/RESTTableOperations.java:
##########
@@ -166,7 +208,67 @@ public void commit(TableMetadata base, TableMetadata
metadata) {
@Override
public FileIO io() {
- return io;
+ if (encryptionKeyId == null) {
+ return io;
+ }
+
+ if (encryptingFileIO == null) {
+ encryptingFileIO = EncryptingFileIO.combine(io, encryption());
+ }
+
+ return encryptingFileIO;
+ }
+
+ @Override
+ public EncryptionManager encryption() {
+ if (encryptionManager != null) {
+ return encryptionManager;
+ }
+
+ if (encryptionKeyId != null) {
+ if (kmsClient == null) {
+ throw new RuntimeException(
+ "Cant create encryption manager, because key management client is
not set");
+ }
+
+ Map<String, String> tableProperties = Maps.newHashMap();
+ tableProperties.put(TableProperties.ENCRYPTION_TABLE_KEY,
encryptionKeyId);
+ tableProperties.put(
+ TableProperties.ENCRYPTION_DEK_LENGTH,
String.valueOf(encryptionDekLength));
+ encryptionManager =
+ EncryptionUtil.createEncryptionManager(
+ encryptedKeysFromMetadata, tableProperties, kmsClient);
+ } else {
+ return PlaintextEncryptionManager.instance();
+ }
+
+ return encryptionManager;
+ }
+
+ private void encryptionPropsFromMetadata(TableMetadata metadata) {
Review Comment:
Thanks all. I’m aligned with the direction:
- Server as source of truth: store encryption.key-id and
encryption.dek-length in a trusted DB (not metadata.json).
- LOAD: server returns these in LoadTableResponse.config
- COMMIT: server rejects removals/mismatches with 409. For rotation, update
the DB mapping; clients pick it up on next LOAD.
- Doc: +1 to document this (threats + MUST/SHOULD). AES‑GCM shouldn’t be
required; if a server chooses to invest in it, that’s fine. Recommend integrity
defenses for implementations that keep metadata.json in object storage.
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