abstractdog commented on code in PR #471:
URL: https://github.com/apache/tez/pull/471#discussion_r2999751103
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tez-tools/analyzers/job-analyzer/src/main/java/org/apache/tez/analyzer/CSVResult.java:
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@@ -93,31 +95,52 @@ public void setComments(String comments) {
'}';
}
- //For testing
- public void dumpToFile(String fileName) throws IOException {
- OutputStreamWriter writer = new OutputStreamWriter(
- new FileOutputStream(new File(fileName)),
- Charset.forName("UTF-8").newEncoder());
- BufferedWriter bw = new BufferedWriter(writer);
- bw.write(Joiner.on(",").join(headers));
- bw.newLine();
- for (String[] record : recordsList) {
-
- if (record.length != headers.length) {
- continue; //LOG error msg?
- }
+ private static File validateOutputFile(String fileName) throws IOException {
+ //null or empty string check
+ if (fileName == null || fileName.trim().isEmpty()) {
+ throw new IllegalArgumentException("fileName must not be null or empty");
+ }
+
+ // resolve relative path
+ File target = new File(fileName).getCanonicalFile();
+ File parent = target.getParentFile();
+
+ // check if the parent directory exists
+ if (parent == null || !parent.isDirectory()) {
+ throw new IOException("Parent directory does not exist: " + parent);
+ }
+ // check if the parent directory is writable
+ if (!parent.canWrite()) {
+ throw new IOException("No write permission on directory: " + parent);
+ }
+ return target;
Review Comment:
Should we check this separately? If the directory isn’t writable by the
user, the write will fail anyway, right?
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