Re: [science-iwg] java <-> python service bridge

[Jonah Graham <jonah@xxxxxxxxxxxxxxxx>]

At the moment Py4J's Script Engine impl in EASE has nearly no* deps on
Eclipse bundles. The bug exception is that it depends on
org.eclipse.ease itself, and within EASE there would have to be some
refactoring to do a real core <-> eclipse <-> ui separation as at the
moment there is basically only a partial core <-> ui separation, but
both depend on eclipse.

* I am using o.e.core.runtime to extract files from bundles and
resolve bundles (in dir shape) as java.io.File for location. Probably
just need the pure OSGi versions for this. (As an aside, is there an
equivalent to Eclipse-BundleShape: dir for pure OSGi, py4j-python has
Eclipse-BundleShape: dir to access the many python files).

Jonah
~~~
Jonah Graham
Kichwa Coders Ltd.
www.kichwacoders.com


On 19 July 2016 at 00:09, Scott Lewis <slewis@xxxxxxxxxxxxx> wrote:
> Hi Jonah,
>
> On 7/18/2016 1:05 PM, Jonah Graham wrote:
>>
>> My general feeling is that implementing all script services + modules
>> as 1st class OSGi services would be a great move. For Python and
>> others, using ECF to wire them up would be great.
>>
>> As for the location of this, it seems that ECF is the logic choice for
>> hosting the transport and the wiring up at the java level. However I
>> think EASE is a logical place to host the process launching, remove
>> service creation, etc.
>
>
> I generally agree.
>
> As it is now, the distribution provider's are intentionally small...i.e.
> Java side:  ECF RSA and Py4j, and on Python side just Py4j.   I would like
> to keep things that way, as it allows both sides to be used in multiple
> environments (e.g. ECF RSA and dist providers can be used in OSGi servers
> like Karaf, Websphere, etc in addition to Eclipse and even in Java-only/no
> OSGi environments).
>
> Therefore it would be best if the process launching and Python<->Java
> gateway setup could have minimal dependencies as well...i.e. not direct or
> indirect to Eclipse IDE or even other bundles.
>
> Scott
>
>
>
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