jt2594838 commented on code in PR #16888:
URL: https://github.com/apache/iotdb/pull/16888#discussion_r2604896423
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iotdb-core/datanode/src/main/java/org/apache/iotdb/db/auth/ClusterAuthorityFetcher.java:
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@@ -169,35 +169,32 @@ public List<Integer> checkUserPathPrivileges(
String username, List<? extends PartialPath> allPath, PrivilegeType
permission) {
checkCacheAvailable();
List<Integer> posList = new ArrayList<>();
- User user = iAuthorCache.getUserCache(username);
- if (user != null) {
- if (user.isOpenIdUser()) {
- return posList;
- }
- int pos = 0;
- for (PartialPath path : allPath) {
- if (!user.checkPathPrivilege(path, permission)) {
- boolean checkFromRole = false;
- for (String rolename : user.getRoleSet()) {
- Role cachedRole = iAuthorCache.getRoleCache(rolename);
- if (cachedRole == null) {
- return checkPathFromConfigNode(username, allPath, permission);
- }
- if (cachedRole.checkPathPrivilege(path, permission)) {
- checkFromRole = true;
- break;
- }
+ User user = getUser(username);
+ if (user.isOpenIdUser()) {
+ return posList;
+ }
+ int pos = 0;
+ for (PartialPath path : allPath) {
+ if (!user.checkPathPrivilege(path, permission)) {
+ boolean checkFromRole = false;
+ for (String rolename : user.getRoleSet()) {
+ Role cachedRole = iAuthorCache.getRoleCache(rolename);
+ if (cachedRole == null) {
+ checkRoleFromConfigNode(username, rolename);
+ cachedRole = iAuthorCache.getRoleCache(rolename);
}
Review Comment:
There is still a chance that the role is evicted between line 183 and 184,
therefore, cachedRold can still be null.
One possible solution is to make `checkRoleFromConfigNode()` return the Role
it just fetched.
And may rename `checkRoleFromConfigNode()` to `fetchRoleFromConfigNode()`
which is more precise.
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