OSLC (Open Services for Lifecycle Collaboration): open standard for interoperability of open source ALM tools

Intoduction FLOSS development issues OSLC Interoperability Conclusion

OSLC (Open Services for Lifecycle Collaboration):
open standard for interoperability of open source
ALM tools

Olivier Berger <olivier.berger@it-sudparis.eu>,
Télécom SudParis

Wednesday 2011/11/30
ICSSEA 2011

Olivier Berger <olivier.berger@it-sudparis.eu>, Télécom SudParis
OSLC (Open Services for Lifecycle Collaboration): open standard for interoperability of open source ALM tools


Quick Introduction

Plan

FLOSS development issues
OSLC Standard
Interoperability of development tools



Quick Introduction

Short bio

Télécom SudParis
http://www.telecom-sudparis.eu/
Higher education school in Évry (France), sister of Telecom
Paristech, also member of Institut Telecom.
Olivier BERGER
<olivier.berger@it-sudparis.eu>
Research Engineer at TELECOM SudParis, expert on software
development forges, and interoperability in the libre software
development projects.



Research interest

Large scale bug-tracking

Lots of duplicate or related bug reports
Not a single place where to monitor bugs
OK, launchpad, maybe. . . too much a silo anyway

No interoperability of tools
Manual work of maintainer / QA (bug triaging, etc.)



Research interest

FLOSS distributions ecosystem

Source : http ://git.upsilon.cc/r/talks/20110224-evry.git



Research interest

Bugtracker interoperability prerequisite

No existing standard for bugtracker APIs
. . . until OSLC-CM (2009-)



Open Services for Lifecycle Collaboration

Quick introduction to OSLC

Open Services for Lifecycle Collaboration :
Lifecycle integration inspired by the Web
The Open Services for Lifecycle Collaboration (OSLC)
community is working to standardize the way that software
lifecycle tools can share data (for example, requirements,
defects, test cases, plans, or code) with one another.

Website :
http://open-services.net/
Open Source License Checker / Our
Savior Lutheran Church




Showtime ! (nice IBM propaganda)

http://www.youtube.com/watch?v=B2vqL8fujgE



OSLC Community

Open Community
Lead : IBM/Rational
Specs elaborated in a Wiki
Eclipse Lyo Open Source
project :
http:
//www.eclipse.org/lyo/




Speciﬁcations : interoperability «standard»

Open Standard
patent non-assert covenant signed by all contributors
speciﬁcations under Creative Commons
various domains (ALM, PLM)
OSLC-CM (Change Management)
More domains, but haven’t participated myself
Technology
based on the Web’s tech standards : REST, RDF, AJAX,
Dublin Core
going from the LAN to the Web (>= 2.0, Linked Data)
pragmatic approach




Specification effort progress
V2 specs finalized for many domains




Change Management Domain

OSLC Core
http://open-services.net/bin/view/Main/OslcCore
OSLC-CM : Change Management (bug trackers, etc.)




Semantic + extendable exchange format : RDF

Example (XML)
<rdf:RDF
Example (JSON)
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:dcterms="http://purl.org/dc/terms/"
xmlns:foaf="http://xmlns.com/foaf/0.1/"
{
xmlns:oslc_blog="http://open-services.net/ns/bogus/blogs#">
"prefixes" : {
"oslc": "http://open-services.net/ns/core#",
<oslc_blog:Entry
"rdf" : "http://www.w3.org/1999/02/22-rdf-syntax-
rdf:about="http://example.com/blogs/entry/1">
"foaf" : "http://http://xmlns.com/foaf/0.1/",
"dcterms" : "http://purl.org/dc/terms/"
<dcterms:title>I love trash</dcterms:title>
},
<dcterms:modified>2002-10-10T12:00:00-05:00</dcterms:modified>
"rdf:type" : { "rdf:resource" : "http://open-service
<dcterms:content>
"rdf:about" : "http://example.com/blogs/entry/1",
Anything dirty or dingy or dusty.
"dcterms:title" : "I love trash",
Anything ragged or rotten or rusty.
"dcterms:modified" : "2002-10-10T12:00:00-05:00",
</dcterms:content>
"dcterms:content" : "Anything dirty or dingy or dust
<dcterms:creator>
"dcterms:creator" : {
<foaf:Person>
"foaf:name" : "Oscar T. Grouch"
<foaf:name>Oscar T. Grouch</foaf:name>
},
</foaf:Person>
}
</dcterms:creator>

</oslc_blog:Entry>
</rdf:RDF>



Meta model entities for Web Services (discovery)




REST APIs

classical REST C,R,U,D operations
Create (POST)
Retrieve (GET)
Update (PUT)
Delete (DEL)
Integration / interop oriented APIs
resource IDs == URLs (RDF, Linked Data)
minimal REST APIs + extensions for each product’s features
delegated dialogues -> AJAX scenarii
resource preview,
OAuth
etc.




Example bugzilla report (through Eclipse Lyo adapter)
$ rapper -o turtle http://localhost:8282/bugz/changerequest?id=1

@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix oslc: <http://open-services.net/ns/core#> .
@prefix oslc_cm: <http://open-services.net/ns/cm#> .
@prefix bugz: <http://www.bugzilla.org/rdf#> .
@prefix foaf: <http://http://xmlns.com/foaf/0.1/> .

<http://localhost:8282/bugz/changerequest?id=1>
oslc_cm:status "NEW" ;
dcterms:contributor [
foaf:name "olivier.berger@it-sudparis.eu" ;
a foaf:Person
] ;
dcterms:created "Fri May 20 17:36:00 CEST 2011" ;
dcterms:identifier "1" ;
dcterms:modified "Fri May 20 17:36:56 CEST 2011" ;
dcterms:title "coin" ;
bugz:component "TestComponent" ;
bugz:opsys "Linux" ;
bugz:platform "PC" ;
bugz:priority "P3" ;
bugz:product "TestProduct" ;
bugz:version "unspecified" ;
a oslc_cm:ChangeRequest .




Service catalog’s operations




AJAX Mashups (delegated dialogs)



Tools integration and interoperability

Software development tools integration issues

Lots of diﬀerent (legacy) systems in respective silos
Integrated suites
Open Source tools or Proprietary Software alike
Software development forges
Agile methodologies vs. monolithic suites
Traceability
Scalability
Very poor interoperability
Syntactic
Semantic




Integration with silos

Tools are “natively” integrated in isolated suites
Ad-hoc interfaces : no standardization




New integration model
linked lifecycle data

Source : IBM/Rational




Exemple : OSLC Compact preview of FusionForge users

Resources linking and preview through standardized mechanism for
URIs + AJAX preview

http://fusionforge.org/plugins/mediawiki/wiki/fusionforge/index.php/OslcCompactPreviewTooltips




Generic preview through HTTP content-negociation
$ curl -H ’Accept: application/x-oslc-compact+xml’ http://fftrunk/users/labbenes

<?xml version="1.0"?>
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:dcterms="http://purl.org/dc/terms/"
xmlns:oslc="http://open-services.net/ns/core#">

<oslc:Compact rdf:about="https://fftrunk/plugins/oslc/compact/user/labbenes">
<dcterms:title>M. Sabri LABBENE</dcterms:title>
<oslc:shortTitle>labbenes</oslc:shortTitle>
<oslc:smallPreview>
<oslc:Preview>
<oslc:document rdf:ressource="https://fftrunk/plugins/oslc/compact/user/labbenes/type/small"/>
<oslc:hintWidth>500px</oslc:hintWidth>
<oslc:hintHeight>150px</oslc:hintHeight>
</oslc:Preview>
</oslc:smallPreview>
</oslc:Compact>
</rdf:RDF>

Specs : http://open-services.net/bin/view/Main/OslcCoreUiPreview




Continuous integration : FusionForge + JenkinsCI

Jenkins (ex Hudson) as OSLC-CM Consumer
Can create bug reports in case of failed builds/tests on distant
bugtracker
We have developped an Open Source plugin for Jenkins (Java,
Javascript mashup, OSLC-CM plugin published on GiHub)
FusionForge Trackers as OSLC-CM Provider
Handles the bug reports DB, and exhibits an OSLC-CM
compatible REST API
Delegates authentication to consumers on behalf of real forge
users, through OAuth
We have developed an Open Source plugin (PHP + Zend
Framework, published on FusionForge’s SVN)




Demo : FusionForge + jenkins

Demo : http://vimeo.com/23480321




Deployments ?

Proprietary
IBM/Rational : Jazz, RTC,. . .
Tasktop Sync
...
FLOSS
FusionForge trackers
Bugzilla (through Eclipse Lyo : http ://eclipse.org/lyo/)
Hudson/Jenkins
Eclipse Mylyn (soon ?)
+/- Mantis



Perspectives

More interoperability in FLOSS tools

Push standardization in tools development
Eclipse Mylyn support of OSLC (in the FLOSS parts), based
on Eclipse Lyo roots ? . . . When ?

New opportunities
Open Linked Data for direct “mining” of FLOSS projects
development process metrics

Large scale bug tracking and QA process in the FLOSS
ecosystem
Qui vivra verra. . .



Questions ?

Fin

Thanks.

More
OSLC Tutorial : http ://open-services.net/tutorial/
Micro-blogging : @oberger http://identi.ca/oberger/
Email : mailto:olivier.berger@it-sudparis.eu
Blog : http://www-public.it-sudparis.eu/~berger_o/weblog/

Copyright 2011 Institut Telecom + Olivier Berger
License of this presentation : Creative Commons Share Alike
Some illustrations borrowed from the OSLC speciﬁcationss (licence Creative Commons)


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