Open Stack

Hi!

The issue with join is just a yaql bug that is already fixed. The problem
with yaqluator is that it doesn't use the latest yaql library.

Another problem is that it does't sets options correctly. As a result it is
possible to bring the site down with a query that produces endless
collection

Sincerely yours,
Stan Lagun
Principal Software Engineer @ Mirantis

<slagun at mirantis.com>

On Tue, Jun 28, 2016 at 9:46 AM, Elisha, Moshe (Nokia - IL) <
moshe.elisha at nokia.com> wrote:

> Hi,
>
> Thank you for the kind words, Alexey.
>
> I was able to reproduce your bug and I have also found the issue.
>
> The problem is that we did not create the parser with the engine_options
> used in the yaql library by default when using the CLI.
> Specifically, the "yaql.limitIterators" was missing… I am not sure that
> this settings should have this affect but maybe the Yaql guys can comment
> on that.
>
> If we will change yaqluator to use this setting it will mean that
> yaqluator will not be consistent with Mistral because Mistral is using YAQL
> without this engine option (If I use your example in a workflow, Mistral
> returns exactly like the yaqluator returns)
>
>
> Workflow:
>
> ---
> version: '2.0'
>
> test_yaql:
>   tasks:
>     test_yaql:
>       action: std.noop
>       publish:
>         output_expr: <% [1,2].join([3], true, [$1, $2]) %>
>
>
> Workflow result:
>
>
> [root at s53-19 ~(keystone_admin)]# mistral task-get-published
> 01d2bce3-20d0-47b2-84f2-7bd1cb2bf9f7
> {
>     "output_expr": [
>         [
>             1,
>             3
>         ]
>     ]
> }
>
>
> As Matthews pointed out, the yaqluator is indeed OpenSource and
> contributions are welcomed.
>
> [1]
> https://github.com/ALU-CloudBand/yaqluator/commit/e523dacdde716d200b5ed1015543d4c4680c98c2
>
>
>
> From: Dougal Matthews <dougal at redhat.com>
> Reply-To: "OpenStack Development Mailing List (not for usage questions)" <
> openstack-dev at lists.openstack.org>
> Date: Monday, 27 June 2016 at 16:44
> To: "OpenStack Development Mailing List (not for usage questions)" <
> openstack-dev at lists.openstack.org>
> Subject: Re: [openstack-dev] [mistral] [murano] [yaql] yaqluator bug
>
> On 27 June 2016 at 14:30, Alexey Khivin <akhivin at gmail.com> wrote:
>
>> Hello, Moshe
>>
>> Tomorrow I discovered yaqluator.com for myself! Thanks for the useful
>> tool!
>>
>> But suddenly I was said that the expression
>> [1,2].join([3], true, [$1, $2])
>> evaluated to [[1,3]] on the yaqluator
>>
>> A the same time this expression evaluated right when I using raw yaql
>> interpreter.
>>
>> Could we fix this issue?
>>
>> By the way, don't you want to make yaqluator opensource? If you would
>> transfer yaqluator to Openstack Foundation, then  community will be able to
>> fix such kind of bugs
>>
>
> It looks like it is open source, there is a link in the footer:
> https://github.com/ALU-CloudBand/yaqluator
>
>
>>
>> Thank you!
>> Best regards, Alexey Khivin
>>
>>
>>
>> __________________________________________________________________________
>> OpenStack Development Mailing List (not for usage questions)
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>>
>>
>
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