[DISCUSS] PIP-343: Use picocli instead of jcommander

[Zixuan Liu <no...@gmail.com>]

Hello,

A new proposal to improve the CLI user experience.

PIP: https://github.com/apache/pulsar/pull/22181

Thanks,
Zixuan

Re: [DISCUSS] PIP-343: Use picocli instead of jcommander

[Zixuan Liu <no...@gmail.com>]

Sync conversations from Slack.

Lari Hotari:
After this PR is completed, I will add the automatic completion feature.
sounds great. Just wondering if there's an overlap with pulsar-shell. Is
there a way to unite pulsar-admin and pulsar-shell in the future? Would
that make sense? /cc
@Nicoló Boschi @Enrico Olivelli

Zixuan Liu:
This feature has different implementations between pulsar-admin/client and
pulsar-shell.
pulsar-admin and pulsar-client uses the completion script, which will be
installed to you shell(bash, zsh), please
https://picocli.info/autocomplete.html
pulsar-shell depends on the jline3.

Enrico Olivelli:
Pulsar Shell is a wrapper for Pulsar admin and Pulsar client
It is not a distict codebase.

Nicoló Boschi:
In general pulsar shell should be used as a replacement for pulsar admin
because it brings many improvements such as config management, performance,
auto completion, client commands

Lari Hotari:
It just feels that it would be good to consider pulsar-shell in PIP-343 too
so that things work seamlessly also after making the improvements.
> In general pulsar shell should be used as a replacement for pulsar admin
because it brings many improvements such as config management, performance,
auto completion, client commands
yes. just one thought: a common use case is to run a set of commands with
pulsar-admin in a shell script. this is very inefficient with pulsar-admin
since for each call everything is started, connections created etc. and
then stopped. Does pulsar-shell support non-interactive usage where you'd
pass a list of commands and somehow also do scripting? There might be a
need for conditionals in error handling so it might be hard to handle?

Nicoló Boschi:
Yes it does
https://pulsar.apache.org/docs/next/administration-pulsar-shell/#run-commands-sequentially

Thanks,
Zixuan

Zixuan Liu <no...@gmail.com> 于2024年3月4日周一 01:05写道：

> Hello,
>
> A new proposal to improve the CLI user experience.
>
> PIP: https://github.com/apache/pulsar/pull/22181
>
> Thanks,
> Zixuan
>