[openstack-dev] [Fuel][python-fuelclient] Implementing new commands

Sebastian Kalinowski skalinowski at mirantis.com
Thu Jul 23 17:52:07 UTC 2015


2015-07-23 18:28 GMT+02:00 Stanislaw Bogatkin <sbogatkin at mirantis.com>:

> Hi,
>
> can we just add all needed functionality from old fuel client that fuel2
> needs, then say that old fuel-client is deprecated now and will not support
> some new features, then add new features to fuel2 only? It seems like best
> way for me, cause with this approach:
> 1. Clients will can use only one version of client (new one) w/o switching
> between 2 clients with different syntax
> 2. We won't have to add new features to two clients.
>

Stas, of course moving it all to new fuel2 would be the best way to do it,
but this refactoring took place in previous release. There is no one that
ported a single command (except new ones) since then and there is no plan
for doing so since other activities have higher priority. And features are
still coming so it would be nice to have a policy for the time all commands
will move to new fuel2.


>
> On Thu, Jul 23, 2015 at 9:19 AM, Evgeniy L <eli at mirantis.com> wrote:
>
>> Hi,
>>
>> The best option is to add new functionality to fuel2 only, but I
>> don't think that we can do that if there is not enough functionality
>> in fuel2, we should not ask user to switch between fuel and fuel2
>> to get some specific functionality.
>> Do we have some list of commands which is not covered in fuel2?
>> I'm just wondering how much time will it take to implement all
>> required commands in fuel2.
>>
>
So to compare: this is a help message for "old" fuel [1] and "new" fuel2
[2]. There are only "node", "env" and "task" actions covered and even they
are not covered in 100%.

[1] http://paste.openstack.org/show/404439/
[2] http://paste.openstack.org/show/404440/



>
>> Thanks,
>>
>> On Thu, Jul 23, 2015 at 1:51 PM, Sebastian Kalinowski <
>> skalinowski at mirantis.com> wrote:
>>
>>> Hi folks,
>>>
>>> For a some time in python-fuelclient we have two CLI apps: `fuel` and
>>> `fuel2`. It was done as an implementation of blueprint [1].
>>> Right now there is a situation where some new features are added just to
>>> old `fuel`, some to just `fuel2`, some to both. We cannot simply switch
>>> completely to new `fuel2` as it doesn't cover all old commands.
>>> As far as I remember there was no agreement how we should proceed with
>>> adding new things to python-fuelclient, so to keep all development for new
>>> commands I would like us to choose what will be our approach. There are 3
>>> ways to do it (with some pros and cons):
>>>
>>> A) Add new features only to old `fuel`.
>>> Pros:
>>>  - Implement feature in one place
>>>  - Almost all features are covered there
>>> Cons:
>>>  - Someone will need to port this features to new `fuel2`
>>>  - Issues that forced us to reimplement whole `fuel` as `fuel2`
>>>
>>> B) Add new features only to new `fuel2`
>>> Pros:
>>>  - Implement feature in one place
>>>  - No need to cope with issues in old `fuel` (like worse UX, etc.)
>>> Cons:
>>>  - Not all features are covered by `fuel2` so user will need to switch
>>> between `fuel` and `fuel2`
>>>
>>> C) Add new features to both CLIs
>>> Pros:
>>>  - User can choose which tool to use
>>>  - No need to port feature later...
>>> Cons:
>>>  - ...but it still doubles the work
>>>  - We keep alive a tool that should be replaced (old `fuel`)
>>>
>>>
>>> Best,
>>> Sebastian
>>>
>>> [1] https://blueprints.launchpad.net/fuel/+spec/re-thinking-fuel-client
>>>
>>>
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>>
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