[science-iwg] python, java, services, etc

[Scott Lewis <slewis@xxxxxxxxxxxxx>]

Hi Folks,

There are some EF technologies relevant to the science workflow tech 
discussion that I wanted to contribute.  Because of personal travel, 
however, I was unable to attend the session.   So at the risk of 
repeating things that have been discussed, here are some potentially 
useful techologies for the scientific workflow work

1) OSGi Remote Services [1,2].  The EF project I lead implements the 
OSGI enterprise specs called Remote Services (and the associated 
management agent Remote Service Admin...RSA).   The short story is that 
RS have all the advantages of OSGi services (e.g. dynamics, separation 
between contract and remote impl, versioning, and others [3]) but remote 
services allows service access across processes.

2) ECF's implementation of RS/RSA supports remote services across 
multiple languages and runtimes  [4, 5]

3) I've personally been contributing to a Python-based implementation of 
many of the most important parts of OSGI called iPopo [6] (service 
registry, instance injection, bundle lifecycle, remote services, etc).

4) ECF's RS/RSA implementation supports (now) REST-based services, but 
also mqtt, jms, hazelcast, xml-rpc, javagroups, grpc/protocol buffers, 
websockets, and others [5] as well as supporting extension to any 
desired transport [7] (open source or not).

If there are any questions I monitor this list so please let me know.

Scott

[1] https://www.eclipse.org/ecf/

[2] https://wiki.eclipse.org/Eclipse_Communication_Framework_Project

[3] https://wiki.eclipse.org/OSGi_Remote_Services_and_ECF

[4] http://eclipseecf.blogspot.com/2016/06/polyglot-remote-services.html

[5] 
http://eclipseecf.blogspot.com/2016/04/transport-independent-remote-services.html

[6] http://ipopo.coderxpress.net/wiki/doku.php

[7] 
https://wiki.eclipse.org/Tutorial:_Creating_Custom_Distribution_Providers