sijie commented on a change in pull request #5615: Fix hangs when type invalid
args at command-line
URL: https://github.com/apache/pulsar/pull/5615#discussion_r345561832
##########
File path:
pulsar-client-tools/src/main/java/org/apache/pulsar/admin/cli/CmdBase.java
##########
@@ -39,14 +39,23 @@ public CmdBase(String cmdName, PulsarAdmin admin) {
jcommander.setProgramName("pulsar-admin " + cmdName);
}
+ private void tryShowCommandUsage() {
+ try {
+ String chosenCommand = jcommander.getParsedCommand();
+ jcommander.usage(chosenCommand);
+ } catch (Exception e) {
+ // it is caused by an invalid command, the invalid command can not
be parsed
+ System.err.println("Invalid command, please use pulsar-admin to
check out how to use");
Review comment:
```suggestion
System.err.println("Invalid command, please use `pulsar-admin
--help` to check out how to use");
```
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