Hi Tal,

The loading of the python modules with python functions for workflows happens 
when the module is in PYTHONPATH.

But I could also see that, the absolute path of the resource storage with the 
service template ID is added to sys.path to make it available for python.

This facilitates the loading of modules from CSAR, provided the modules are 
present in the root directory of the CSAR.

Am I right?


Thanks,

/Vaish

________________________________
From: Tal Liron <[email protected]>
Sent: Thursday, December 7, 2017 8:51:49 PM
To: [email protected]
Subject: Re: Loading Custom Workflows from CSAR

Actually, the current implementation does not use the CSAR: it expects that
the Python function (decorated by @workflow) would be somewhere in the
Python path, and we are currently missing a CSAR code-loading mechanism.

We do not expect the @workflow function structure to change in any way, so
I think you can feel confident about writing custom workflows in this
matter. What might change slightly in the near future is how to package the
.py file.


On Thu, Dec 7, 2017 at 2:57 PM, Steve Baillargeon <
[email protected]> wrote:

> Hi
> While the investigation is on-going, I need to double check what can be
> done today.
> But I guess how it is done today might change as well (?)
> Based on our analysis of the latest code base, the loading of the custom
> workflows today is from CSAR only.
> Please advise.
>
> -Steve
>
> -----Original Message-----
> From: Tal Liron [mailto:[email protected]]
> Sent: Tuesday, November 28, 2017 2:06 PM
> To: [email protected]
> Subject: Re: Loading Custom Workflows from CSAR
>
> Thanks, Steve. We don't have a JIRA for this right now, but we do intend
> to have a way to include "plugins" in a CSAR and have them automatically
> installed. A "plugin" is basically a Python extension to ARIA that can be
> loaded at runtime and contained per service.
>
> This is part of our current general work trying to find a good design for
> plugins generally, and will likely result in a JIRA epic with several
> issues. At this time, I don't think it's worth created this epic if we
> don't have a plan.
>
> The design will likely be inspired by the plugin design in Cloudify, from
> which we grabbed our seed code. However, there is room for some
> re-imagination especially as pertains TOSCA-specific issues.
>
> On Tue, Nov 28, 2017 at 1:01 PM, Steve Baillargeon <
> [email protected]> wrote:
>
> > Hi
> > As far as I know the implementation string associated with the
> > aria.Workflow type must call or execute a Python function (using the
> > dot
> > notation) that is stored in ARIA, like a plugin.
> > When will it be possible to refer to  a .py file stored in the CSAR
> > instead?
> > Do you have any Jira for this enhancement?
> >
> > Regards
> > Steve B
> >
>

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