ayushtkn commented on code in PR #3342:
URL: https://github.com/apache/ozone/pull/3342#discussion_r862453964
##########
hadoop-hdds/common/src/main/java/org/apache/hadoop/hdds/scm/net/NetUtils.java:
##########
@@ -149,4 +149,28 @@ public static List<Node> getAncestorList(NetworkTopology
topology,
}
return ancestorList;
}
+
+ /**
+ * Ensure {@link NetConstants#PATH_SEPARATOR_STR} is added to the suffix of
+ * the path.
+ * @param path path to add suffix
+ * @return the normalised path
+ * If <i>path</i>is empty, then {@link NetConstants#ROOT} is returned
+ */
+ public static String addSuffix(String path) {
+ if (path == null) {
+ return null;
+ }
+
+ int len = path.length();
+ if (len == 0) {
+ return NetConstants.PATH_SEPARATOR_STR;
Review Comment:
In the javadoc you said `` If <i>path</i>is empty, then {@link
NetConstants#ROOT} is returned`` but here you are returning ``return
NetConstants.PATH_SEPARATOR_STR`` both have different values.
##########
hadoop-hdds/common/src/main/java/org/apache/hadoop/hdds/scm/net/NetUtils.java:
##########
@@ -149,4 +149,28 @@ public static List<Node> getAncestorList(NetworkTopology
topology,
}
return ancestorList;
}
+
+ /**
+ * Ensure {@link NetConstants#PATH_SEPARATOR_STR} is added to the suffix of
+ * the path.
+ * @param path path to add suffix
+ * @return the normalised path
+ * If <i>path</i>is empty, then {@link NetConstants#ROOT} is returned
+ */
+ public static String addSuffix(String path) {
+ if (path == null) {
+ return null;
+ }
+
+ int len = path.length();
+ if (len == 0) {
+ return NetConstants.PATH_SEPARATOR_STR;
+ }
+
+ if (path.charAt(len - 1) != NetConstants.PATH_SEPARATOR) {
+ return path + NetConstants.PATH_SEPARATOR_STR;
+ }
+
+ return path;
Review Comment:
```suggestion
if (!path.endsWith(NetConstants.PATH_SEPARATOR_STR)) {
return path + NetConstants.PATH_SEPARATOR_STR;
}
```
Does this do the same thing?
##########
hadoop-hdds/common/src/main/java/org/apache/hadoop/hdds/scm/net/NetUtils.java:
##########
@@ -149,4 +149,28 @@ public static List<Node> getAncestorList(NetworkTopology
topology,
}
return ancestorList;
}
+
+ /**
+ * Ensure {@link NetConstants#PATH_SEPARATOR_STR} is added to the suffix of
+ * the path.
+ * @param path path to add suffix
+ * @return the normalised path
+ * If <i>path</i>is empty, then {@link NetConstants#ROOT} is returned
+ */
+ public static String addSuffix(String path) {
+ if (path == null) {
+ return null;
+ }
Review Comment:
Why are you returning ``null`` here? Won't this lead to NPE in the
isDecendent(String ..) & isAncesstor(String ..) methods.
For the same methods with argument as Node, if node is ``null``, you return
false, but for the methods with argument as string you would return NPE, if the
path is ``null``
Just FYI. In normalize method, it returns root in case of ``null``
```
public static String normalize(String path) {
if (path == null) {
return NetConstants.ROOT;
}
```
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