August 2012 - glue-wg - lists.ogf.org

flat xml rendering
by david.meredith＠stfc.ac.uk 04 Oct '12

04 Oct '12

Hi all, Following OGF 35 I have produced an updated draft of the XSD: http://tools.ngs.ac.uk/ngstools/glue2proposal/flat.zip This rendering has a 'flat' style and includes the global <Entities> element bag with abstract elements/substitution groups. There are a few choices that still need to be addressed which are highlighted with TODO annotations (please do a search on 'TODO' in glue2_2.xsd). A sample instance document is also provided (glue2_2SampleDoc1.xml). For the purposes of demonstration, there is also a sample XSD (sampleGlue2_2Extension.xsd) that imports the glue2_2.xsd to define new service and endpoint element types. This shows how future profiles could extend the glue XSD in order to define new sub-type specialisations (also see the sample instance doc, sampleGlue2_2ExtensionDoc.xml). I guess the next step is to do another telephone conf to agree/disagree. If possible, i would prefer to do this before spending too much effort on updating the Word doc. Cheers, David ========================== David Meredith Scientific Computing Technology eScience Daresbury Laboratory Tel: +44 (0) 1925 603762 Fax: +44 (0) 1925 603100 (Site) Email: david.meredith(a)stfc.ac.uk Skype name: davidismeredith -- Scanned by iCritical.

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EGI TF
by stephen.burke＠stfc.ac.uk 31 Aug '12

31 Aug '12

Hi, Details for the Technical Forum: the main info system workshop is at 11 am on Thursday 20th in the Zenith room, and is part of the main operations track so it may get a fairly large audience: https://indico.egi.eu/indico/contributionDisplay.py?contribId=75&confId=1019 In addition there are GOC DB and gstat talks in sessions on operations tools on Wednesday 19th: https://indico.egi.eu/indico/sessionDisplay.py?sessionId=39&confId=1019 I've also asked for a room on the Thursday afternoon: When: Thurs 20 Sep at 16:00 Where: Aquarius Title: GLUE schema tech meeting Event: Closed Meeting INDICO Timetable: Not included I asked for a closed meeting so we don't get too many people, but anyone with an interest can turn up - the room holds 63 (I asked for a smaller room but it was already booked). We don't need to use it if we have nothing to discuss, but 90 minutes in the main session isn't a lot. (NB The conference dinner is on the Thursday evening so we can't go on too long :) If anyone wants to propose any talks or discussion topics let me know. Stephen -- Scanned by iCritical.

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Flat xml schemas are on redmine now
by Shiraz Memon 30 Aug '12

30 Aug '12

Hi David, All, The flat xml schemas can now be found under Documents, on the glue's redmine page. http://redmine.ogf.org/dmsf/glue-wg?folder_id=31 The documents can be versioned and locked to easily track the forthcoming changes. Cheers, Shiraz -- Ahmed Shiraz Memon Federated Systems and Data Jülich Supercomputing Centre (JSC) Phone: +49 2461 61 6899 Fax: +49 2461 61 6656 ------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------ Forschungszentrum Juelich GmbH 52425 Juelich Sitz der Gesellschaft: Juelich Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498 Vorsitzender des Aufsichtsrats: MinDir Dr. Karl Eugen Huthmacher Geschaeftsfuehrung: Prof. Dr. Achim Bachem (Vorsitzender), Karsten Beneke (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt, Prof. Dr. Sebastian M. Schmidt ------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------ Kennen Sie schon unsere app? http://www.fz-juelich.de/app

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Meeting Notes: August 29, 2012
by Shiraz Memon 30 Aug '12

30 Aug '12

Dear WG, The meeting notes from yesterday's meeting (29.08) have been published on our wiki: http://redmine.ogf.org/projects/glue-wg/wiki/29_August_2012 Should you find any errors, please let me know. Cheers, Shiraz -- Ahmed Shiraz Memon Federated Systems and Data Jülich Supercomputing Centre (JSC) Phone: +49 2461 61 6899<tel:%2B49%202461%2061%206899> Fax: +49 2461 61 6656<tel:%2B49%202461%2061%206656> ------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------ Forschungszentrum Juelich GmbH 52425 Juelich Sitz der Gesellschaft: Juelich Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498 Vorsitzender des Aufsichtsrats: MinDir Dr. Karl Eugen Huthmacher Geschaeftsfuehrung: Prof. Dr. Achim Bachem (Vorsitzender), Karsten Beneke (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt, Prof. Dr. Sebastian M. Schmidt ------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------ Kennen Sie schon unsere app? http://www.fz-juelich.de/app

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EGI TF
by stephen.burke＠stfc.ac.uk 28 Aug '12

28 Aug '12

Hi, There will be an information system workshop during the EGI Technical Forum in Prague (September 20th), and it would be interesting to know how many people on this list will be there. Stephen -- Scanned by iCritical.

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Next Teleconference Meeting
by Shiraz Memon 28 Aug '12

28 Aug '12

Hi all, We will meet tomorrow at 16:30. The details are as follows: Coordinates: : Thursday, May 31, 2012 : 16:30-18:00 Central Europe, 10:30-12:00 AM US Eastern Teleconference and screen sharing: : https://webconf.vc.dfn.de/ogf-glue-wg/ (Adobe Connect) : Login as Guest using your real name Agenda: * progress on xsd schema (flat style) * progress on ldap rendering document * publishing pseudo-standard enumerations * migration from grid-forge to redmine * any other issues? Cheers, Shiraz -- Ahmed Shiraz Memon Federated Systems and Data Jülich Supercomputing Centre (JSC) Phone: +49 2461 61 6899 Fax: +49 2461 61 6656 ------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------ Forschungszentrum Juelich GmbH 52425 Juelich Sitz der Gesellschaft: Juelich Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498 Vorsitzender des Aufsichtsrats: MinDir Dr. Karl Eugen Huthmacher Geschaeftsfuehrung: Prof. Dr. Achim Bachem (Vorsitzender), Karsten Beneke (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt, Prof. Dr. Sebastian M. Schmidt ------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------ Kennen Sie schon unsere app? http://www.fz-juelich.de/app

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ComputingService and Endpoints, a point of view
by Florido Paganelli 28 Aug '12

28 Aug '12

Hi all, I've been thinking about this ComputingService <- exposes -> Endpoints association and if it's possible to do it based on the UML diagrams contained in GFD1.47. (see figures on page 7, 22) I think the UML diagram doesn't clarify what happens to the association <- exposes -> with respect to inheritance when it comes to the specialized classes ComputingService,ComputingEndpoint. What we have is Service <- exposes -> Endpoints ComputingService <- exposes -> ComputingEndpoints Now if we could write this as a piece of object oriented pseudocode, we would have Class Service { // a list of exposed Endpoints Endpoint MyEndpoints } Class ComputingService extends Service { // a list of exposed ComputingEndpoints ComputingEndpoint MyComputingEndpoints } What happens with inheritance wrt <- exposes -> ? I think there can be two implementations for a ComputingService constructor: 1) ComputingService includes the <- exposes -> from Service, that is, an instance of ComputingService would have both MyEndpoints and MyComputingEndpoints: ComputingService( EndpointList someEndpoints , ComputingEndpointList someComputingEndpoints ) { this.MyEndpoints = someEndpoints; this.MyComputingEndpoints = someComputingEndpoints; } 2) ComputingService overrides the <- exposes -> from Service, that is an instance of ComputingService has ComputingService( ComputingEndpointList someComputingEndpoints ) { this.MyEndpoints = someComputingEndpoints } I favour the 1) as it makes possible to have Endpoints inside a ComputingService, that would give better readability and clarity to Endpoints which are NOT ComputingEndpoints. these two implementation are, in my opinion, both possible as UML does not really scope associations with inheritance. What do you think? Which one should we favour? I am really annoyed of calling ComputingEndpoint an Endpoint that has nothing to do with computing! Thanks for your answers, -- Florido Paganelli Lund University - Particle Physics ARC Middleware EMI Project

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Call for the Next Teleconference Meeting
by Shiraz Memon 23 Aug '12

23 Aug '12

Dear WG Members, To finalize the glue schema and the corresponding rendering documents, me and JP would like to invite you for a (~1.5 hrs) meeting, the agenda items will be: * progress on xsd schema (flat style) * progress on ldap rendering document * publishing pseudo-standard enumerations * migration from grid-forge to redmine * any other issues? Please mark your availability under the following doodle link: http://www.doodle.com/pcmk3myur2k763gt Best regards, Shiraz -- Ahmed Shiraz Memon Federated Systems and Data Jülich Supercomputing Centre (JSC) Phone: +49 2461 61 6899<tel:%2B49%202461%2061%206899> Fax: +49 2461 61 6656<tel:%2B49%202461%2061%206656> ------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------ Forschungszentrum Juelich GmbH 52425 Juelich Sitz der Gesellschaft: Juelich Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498 Vorsitzender des Aufsichtsrats: MinDir Dr. Karl Eugen Huthmacher Geschaeftsfuehrung: Prof. Dr. Achim Bachem (Vorsitzender), Karsten Beneke (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt, Prof. Dr. Sebastian M. Schmidt ------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------ Kennen Sie schon unsere app? http://www.fz-juelich.de/app

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Endpoints and ComputingService, relationships between services. Some thoughs
by Florido Paganelli 20 Aug '12

20 Aug '12

Hi all, I am in the situation that I would like to have a simple Endpoint published within a ComputingService. However, besides UML inheritance might allow this, the hierarchic xsd schema does not allow that, it only allows ComputingEndpoints to be nested within ComputingServices. I don't know it this is good or bad; for you to understand how I got here, I can give you this little problem to solve: Suppose the same machine hosts two RELATED services, that is, one needs the other one for proper functionality. For example a delegation service is needed to submit a job to a job execution service. Is there a way for an information consumer to infer/understand this relationship? Can a client understand that (1) the services are related and (2) that they are running in the same machine just by looking at the GLUE2 records? One might think of associations, but it can easily be shown that they don't solve the problem. We don't really have service-to-service associations, just some kind of hierarchy between services. What do you think? -- Florido Paganelli Lund University - Particle Physics ARC Middleware EMI Project

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AccessMode
by stephen.burke＠stfc.ac.uk 01 Aug '12

01 Aug '12

Hi, Going through the GLUE 2 schema I just noticed that StorageShare has an attribute called AccessMode with type AccessMode_t which doesn't appear to be defined. The text is "An identifier for the type of access and usage allowed for this Share." which doesn't immediately ring any bells. Does anyone know what this was for? Stephen -- Scanned by iCritical.

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