On 20/12/12 14:01, Dario Garcia Gasulla wrote: > El 20/12/12 11:07, [email protected] escribió: >> Hi Dario: >> >> On 20/12/12 11:50, Dario Garcia Gasulla wrote: >>> Hi, >>> >>> I'm Dario Garcia, a researcher from the Technical University of >>> Catalonia (UPC). In a research project we are developing together with >>> other partners we are using deltacloud to manage connections to various >>> IaaS providers. For this we require a java REST client which can >>> automate the requests to deltacloud. >> awesome - is there any more info on the project (e.g. do you have a >> website somewhere?)? >> > > Currently there's no web page for the project. Roughly, the project aims > to develop a system which recieves petitions from clients to execute > computationally expensive jobs on remote Clouds. The system, through > deltacloud and other tools, connects to various IaaS providers (clouds > or grids), choses the most appropriate one according to certain > heuristics (based on load balancing, price and system requirements) and > transparently executes the job and returns the results.
interesting... how are you tackling the issue of pricing for example? Like many clouds don't expose pricing info via the API (aws only started supporting this recently if i recall correctly) - will you be maintaining some kind of persistence layer with pricing info? > >>> I've been looking for Java REST clients, and there is not a single >>> library which seems to be particularly appropriate. I also noticed that >>> there's a client developed within the deltacloud project: >>> https://github.com/apache/deltacloud/tree/master/clients/java >>> >>> I've already downloaded this client and I'm currently testing it. >>> However, any information and help I could get about it would be most useful. >>> My question mainly is, what is the state of this client? Which >>> functionalities work in the latest version? >>> >> wrt to the 'state' - I believe the last anyone worked on this client is >> close to 2 years ago (that brave soul was Andre Dietisheim - I cc him >> here for any input/pointers he could give if he has the time these days). >> >> So I'm not quite sure what does/doesn't work there. My suggestion for >> now is to try it out. For those things that aren't working, file jira >> tickets [1] so they can be addressed. Even better, if you are able to >> implement the fixes yourself, we will be very happy to help you on your >> way (here/irc) ;) - on anything ranging from 'how to make patches' [2] >> to 'the layout of the deltacloud code' etc >> >> marios >> > Thanks, I'll check out those references. > > On the meantime I wrote a first test to connect to deltacloud, which > connects to Amazon and then retrieves the list of images, and I already > obtained weird results. > > The connection works OK, but I cannot retrieve the images which I own. > The authentication however does not seems to be the problem, since I > obtain a huge list of available images (some owned by Amazon, some I > don't know by whom) which I wouldn't get if the authentication was not > successful. > To do so I call these two methods of Class DeltaCloudClient: > DeltaCloudClientImpl(String url, String username, String password) > listImages() > > Any clues? Two things, firstly - you can always check if the java client is giving you a 'correct' response by calling the server with a different, (known to be) better supported/updated client, like the HTML UI or even better call the server directly using something like cURL [1]. WRT the specific issue here - if you check the entry point of the API you can see that the ec2 driver exposes the 'owner_id' feature [2] - which allows you to filter by this parameter e.g.: curl --user "user:pass" -H "Accept: application/xml" http://localhost:3001/api/images?owner_id=123456789 marios [1] http://deltacloud.apache.org/curl-examples.html [2] http://deltacloud.apache.org/api-entry-point.html#feature > >> [1] https://issues.apache.org/jira/browse/DTACLOUD >> [2] >> http://www.youtube.com/watch?feature=player_embedded&v=cUC96SdQjaE#t=1827s >> >>> If I can get to use this client I could provide bugs reports and usage >>> examples. >>> >>> Thanks in advance, >>> Dario. >>> >
