NealSun96 commented on a change in pull request #759: Add validation logic to
MSD write operations
URL: https://github.com/apache/helix/pull/759#discussion_r379603177
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File path:
helix-rest/src/main/java/org/apache/helix/rest/metadatastore/TrieRoutingData.java
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@@ -89,49 +87,55 @@ public String getMetadataStoreRealm(String path)
+ DELIMITER + "\" character: " + path);
}
- TrieNode leafNode = findTrieNode(path, true);
- return leafNode.getRealmAddress();
+ TrieNode node = getLongestPrefixNodeAlongPath(path);
+ if (!node.isShardingKey()) {
+ throw new NoSuchElementException(
+ "No sharding key found within the provided path. Path: " + path);
+ }
+ return node.getRealmAddress();
+ }
+
+ public boolean isShardingKeyInsertionValid(String shardingKey) {
+ if (shardingKey.isEmpty() || !shardingKey.substring(0,
1).equals(DELIMITER)) {
+ throw new IllegalArgumentException(
+ "Provided shardingKey is empty or does not have a leading \"" +
DELIMITER
+ + "\" character: " + shardingKey);
+ }
+
+ TrieNode node = getLongestPrefixNodeAlongPath(shardingKey);
+ return !node.isShardingKey() && !node.getPath().equals(shardingKey);
}
/**
Review comment:
Interesting point. I have converted the javadoc to block comments.
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