chia7712 commented on code in PR #20221:
URL: https://github.com/apache/kafka/pull/20221#discussion_r2291554916
##########
server-common/src/main/java/org/apache/kafka/server/util/CommandLineUtils.java:
##########
@@ -135,6 +138,30 @@ public static void printErrorAndExit(String message) {
Exit.exit(1, message);
}
+ /**
+ * Check that exactly one of a set of mutually exclusive arguments is
present.
+ */
+ public static void checkOneOfArgs(OptionParser parser, OptionSet options,
OptionSpec<?>... optionSpecs) {
+ if (optionSpecs == null || optionSpecs.length == 0) {
+ throw new IllegalArgumentException("At least one option must be
provided");
+ }
+
+ int presentCount = 0;
+ for (OptionSpec<?> spec : optionSpecs) {
+ if (options.has(spec)) {
+ presentCount++;
+ }
+ }
+
+ if (presentCount != 1) {
+ printUsageAndExit(parser, "Exactly one of the following arguments
is required: " +
+ Arrays.stream(optionSpecs)
+ .filter(Objects::nonNull)
Review Comment:
this is unnecessary, right?
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