December 2013 - Devel - oVirt List Archives

[Engine-devel] Using REST API in web UI - review call summary
by Vojtech Szocs 14 Feb '14

14 Feb '14

Hi guys, this is a summary of yesterday's review call, I'll try to highlight important Q/A and things we agreed on. Feel free to add anything in case I've missed something. -- Q: Why don't we simply try to use existing Java SDK and adapt it for GWT apps? (asked by Michael & Gilad) A: This might be a viable option to consider if we wanted to skip JavaScript-based SDK altogether and target Java/GWT code directly; we could simply take Java SDK and customize its abstractions where necessary, i.e. using HTTP transport layer implementation that works with GWT. In any case, this would mean coupling ourselves to Java SDK (which has its own release cycle) and I think this would complicate things for us. As proposed on the meeting, I think it's best to aim for JavaScript SDK as the lowest common denominator for *any* web application that wants to work with REST API. oVirt GWT-based UI can simply bind to JavaScript SDK, i.e. Java/GWT code that just overlays objects and functions provided by JavaScript SDK. Another reason is ease of maintenance - I'd rather see JavaScript SDK's code generation process to be independent of any other SDK (people responsible for maintaining JavaScript SDK should have full control over generated code). -- Q: What about functionality currently used by oVirt UI but not supported by REST API? (asked by Einav) [For example, fetching VM entity over GWT RPC also returns related data such as Cluster name.] A: Based on discussion I've had with other colleagues after yesterday's review call, I don't think that separate support-like backend layer is a good idea. Instead, this is the kind of functionality that could be placed in oVirt.js library. Logical operations like "get VMs and related data" would be exposed through oVirt.js (callback-based) API and ultimately realized as multiple physical requests to REST API via JavaScript Binding. oVirt.js client would be completely oblivious to the fact that multiple physical requests are dispatched. In fact, since HTTP communication is asynchronous in nature, oVirt.js client wouldn't even notice any difference in terms of API consumption. This assumes JavaScript SDK would use callback-based (non-blocking) API instead of blocking one - after all, blocking API on top of non-blocking implementation sounds pretty much like leaky abstraction [1]. For example: sdk.getVmsWithExtraData( callbackToGetExtraDataForGivenVm, // might cause extra physical requests to REST API callbackFiredWhenAllDataIsReady // update client only when all data is ready ) [1] http://en.wikipedia.org/wiki/Leaky_abstraction -- Last but not least, where to maintain JavaScript SDK projects: low-level JavaScript Binding + high-level oVirt.js library. I agree that conceptually both above mentioned projects should go into dedicated "ovirt-engine-sdk-js" git repository and have their own build/release process. However, for now, we're just making baby steps so let's keep things simple and prototype these projects as part of "ovirt-engine" git repository. ... we can complicate things anytime, but we should know that any complex system that works has inevitably evolved from simple system that works ... (quote from http://en.wikipedia.org/wiki/Gall%27s_law) Regards, Vojtech

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[Engine-devel] [BUG] in UserMapper.java in 3.3.2
by Sven Kieske 17 Jan '14

17 Jan '14

Hi, afaik there's a bug in 3.3.2 rest-api implementation of Cloud-Init: This Class never gets the password: http://gerrit.ovirt.org/gitweb?p=ovirt-engine.git;a=blob;f=backend/manager/… and I think there is a typo in line 48: vdcUser.setDomainControler(adUser.getDomainControler it should be Controller, not Controler. there is no model.setPassword or similar. so the data gets to the vm without the password, can somebody fix this? -- Mit freundlichen Grüßen / Regards Sven Kieske Systemadministrator Mittwald CM Service GmbH & Co. KG Königsberger Straße 6 32339 Espelkamp T: +49-5772-293-100 F: +49-5772-293-333 https://www.mittwald.de Geschäftsführer: Robert Meyer St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhausen Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen

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[Engine-devel] How to custom the UI for oVirt?
by JustMan 06 Jan '14

06 Jan '14

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[Engine-devel] Gluster volume capacity feature
by Shubhendu Tripathi 03 Jan '14

03 Jan '14

Hi All, A new wiki has been published for feature "Gluster Volume Capacity" http://www.ovirt.org/Features/Gluster_Volume_Capacity Please review the same and provide your comments. Added Michael and Ori specifically for review of REST apis. Thanks, Shubhendu Tripathi

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[Engine-devel] Broken devel setup on Gentoo?
by Doron Fediuck 01 Jan '14

01 Jan '14

While refreshing my devel environment, setup fails. Log file shows this: 2013-12-31 16:26:05 DEBUG otopi.plugins.otopi.services.openrc plugin.executeRaw:366 execute: ('/etc/init.d/ovirt-websocket-proxy', '-q', 'status'), executable='None', cwd= 'None', env=None 2013-12-31 16:26:05 DEBUG otopi.plugins.otopi.services.openrc plugin.executeRaw:389 execute-result: ('/etc/init.d/ovirt-websocket-proxy', '-q', 'status'), exception Traceback (most recent call last): File "/usr/lib64/python2.7/site-packages/otopi/plugin.py", line 376, in executeRaw env=env, File "/usr/lib64/python2.7/subprocess.py", line 711, in __init__ errread, errwrite) File "/usr/lib64/python2.7/subprocess.py", line 1308, in _execute_child raise child_exception OSError: [Errno 2] No such file or directory Should there be a redirection to use ovirt-websocket-proxy in a local script rather than daemon?

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[Engine-devel] Request for power-user permissions
by Nir Soffer 29 Dec '13

29 Dec '13

Hi all, I'm Nir from storage team. I work mostly on vdsm. I want power-user permissions for jenkins.ovirt.org so I would be able to create and modify jobs related to vdsm. Thanks, Nir

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[Engine-devel] Engine on Fedora 20
by Adam Litke 26 Dec '13

26 Dec '13

Has anyone had success running ovirt-engine on Fedora 20? I upgraded my system on Wednesday and thought everything was fine but then I started getting the following error: 2013-12-19 14:53:31,447 ERROR [org.ovirt.engine.core.bll.Backend] (MSC service thread 1-5) Error in getting DB connection. The database is inaccessible. Original exception is: DataAccessResourceFailureException: Error retreiving database metadata; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Could not get Connection for extracting meta data; nested exception is org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: javax.resource.ResourceException: IJ000453: Unable to get managed connection for java:/ENGINEDataSource Has anyone encountered this recently?

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Re: [Engine-devel] Options for embedding Cloud init features into VM dialog - Need Input
by Gustavo Frederico Temple Pedrosa 26 Dec '13

26 Dec '13

--_000_EF26FC1776F7FF46BFC072393EFD13A2558049E0SERV070corpeldo_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi, In an initial analysis, in my opinion I would discard the "Alternate Concep= t 3", because it goes against the heuristic number #6 of Nielsen (recogniti= on rather than recall), it soon becomes difficult for the user remember whe= re are the options. Also discard the "Alternate Concept 1", because it blends vertical and hori= zontal menus, it soon avoids a pattern (system of meaning) and confuses the= user. Thanks. Date: Tue, 24 Dec 2013 07:49:39 -0500 (EST) From: Eldan Hildesheim <ehildesh(a)redhat.com<mailto:ehildesh@redhat.com>> To: Shahar Havivi <shaharh(a)redhat.com<mailto:shaharh@redhat.com>> Cc: engine-devel <engine-devel(a)ovirt.org<mailto:engine-devel@ovirt.org>> Subject: Re: [Engine-devel] Options for embedding Cloud init features into = VM dialog - Need Input Hi, Can we merge those 2 pages together? Eldan ----- Original Message ----- From: "Shahar Havivi" <shaharh at redhat.com> To: "Malini Rao" <mrao at redhat.com> Cc: "engine-devel" <engine-devel at ovirt.org>, "Eldan Hildesheim" <ehildes= h at redhat.com>, "Omer Frenkel" <ofrenkel at redhat.com>, "Michal Skrivane= k" <michal.skrivanek at redhat.com> Sent: Tuesday, December 24, 2013 2:33:28 PM Subject: Re: [Engine-devel] Options for embedding Cloud init features into = VM dialog - Need Input Hi, We have a feature page for the VM Init (including Cloud-Init and Windows Sysprep): http://www.ovirt.org/Features/vm-init-persistent >From: "Malini Rao" <mrao at redhat.com> >To: "engine-devel" <engine-devel at ovirt.org> >Cc: "Eldan Hildesheim" <ehildesh at redhat.com> >Sent: Monday, December 23, 2013 11:43:07 PM >Subject: [Engine-devel] Options for embedding Cloud init features into VM = dialog - Need Input > >Hello all, > >There is a current feature to embed cloud init configuration which was ori= ginally part of the Run dialog to be part of the create/ Edit VM dialog. Th= is presents a challenge in terms of good display of the hierarchies of inf= ormation since the VM dialog is already having subtabs stacked vertically. = Please find here (http://www.ovirt.org/UX/cloud_init) alternate concepts of= how we might represent all the levels of hierarchy from the VM dialog sub = tabs to the cloud init categories and the content ( which is also nested so= metimes) for each. > >I have provided brief explanations of each concept and I would like your f= eedback on these ... esp with regard to feasibility. The general goals that= govern the various concepts are - > >- Correct representation of the hierarchy >- Not overloading the users with too much info and cluttering the screen >- Not utilizing the same UI paradigm ( like expand/ collapse) for differen= t types of info. For example, we have categories of info where the fields a= re distinct from each other and then we have times where the user is able t= o add multiple instances of the same object type - e.g NICs and have the sa= me set of fields be defined for each instance. > >Your feedback is appreciated. > >Thanks >Malini --_000_EF26FC1776F7FF46BFC072393EFD13A2558049E0SERV070corpeldo_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <html xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micr= osoft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" = xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" xmlns=3D"http:= //www.w3.org/TR/REC-html40"> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"= > <meta name=3D"Generator" content=3D"Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang=3D"PT-BR" link=3D"#0563C1" vlink=3D"#954F72"> <div class=3D"WordSection1"> Hi,<o:p= ></o:p> <o:p>&n= bsp;</o:p> In an i= nitial analysis, in my opinion I would discard the "Alternate Concept = 3", because it goes against the heuristic number #6 of Nielsen (recogn= ition rather than recall), it soon becomes difficult for the user remember where are the options.<o:p></o:p> Also di= scard the "Alternate Concept 1", because it blends vertical and h= orizontal menus, it soon avoids a pattern (system of meaning) and confuses = the user.<o:p></o:p> <o:p>&n= bsp;</o:p> Thanks.<o:p></o:p></sp= an> <o:p> </o:p></spa= n> <o:p> </o:p></spa= n> <o:p> </o:p></spa= n> <o:p> </o:p></spa= n> <div style=3D"border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm = 4.0pt"> Date: Tue, 24 Dec 2013 07:49:39= -0500 (EST)<o:p></o:p> From: Eldan Hildesheim <<a h= ref=3D"mailto:ehildesh@redhat.com">ehildesh(a)redhat.com</a>><o:p></o:p></= span> To: Shahar Havivi <<a href= =3D"mailto:shaharh@redhat.com">shaharh(a)redhat.com</a>><o:p></o:p>= Cc: engine-devel <<a href=3D= "mailto:engine-devel@ovirt.org">engine-devel(a)ovirt.org</a>><o:p></o:p></= span> Subject: Re: [Engine-devel] Opt= ions for embedding Cloud init features into VM dialog - Need Input<o:p></o:= p> <o:p> </o:p> Hi,<o:p></o:p> Can we merge those 2 pages toge= ther?<o:p></o:p> Eldan<o:p></o:p> <o:p> </o:p> ----- Original Message -----<o:= p></o:p> From: "Shahar Havivi"= <shaharh at redhat.com><o:p></o:p> To: "Malini Rao" <= mrao at redhat.com><o:p></o:p> Cc: "engine-devel" &l= t;engine-devel at ovirt.org>, "Eldan Hildesheim" <ehildesh = at redhat.com>, "Omer Frenkel" <ofrenkel at redhat.com>,= "Michal Skrivanek" <michal.skrivanek at redhat.com><o:p></= o:p> Sent: Tuesday, December 24, 201= 3 2:33:28 PM<o:p></o:p> Subject: Re: [Engine-devel] Opt= ions for embedding Cloud init features into VM dialog - Need Input<o:p></o:= p> <o:p> </o:p> Hi,<o:p></o:p> We have a feature page for the = VM Init (including Cloud-Init and Windows<o:p></o:p> Sysprep):<o:p></o:p> <o:p> </o:p> <a href=3D"http://www.ovirt.org= /Features/vm-init-persistent">http://www.ovirt.org/Features/vm-init-persist= ent</a><o:p></o:p> <o:p> </o:p> <o:p> </o:p> >From: "Malini Rao&quot= ; <mrao at redhat.com><o:p></o:p> >To: "engine-devel&quot= ; <engine-devel at ovirt.org><o:p></o:p> >Cc: "Eldan Hildesheim&= quot; <ehildesh at redhat.com><o:p></o:p> >Sent: Monday, December 23, = 2013 11:43:07 PM<o:p></o:p> >Subject: [Engine-devel] Opt= ions for embedding Cloud init features into VM dialog - Need Input<o:p></o:= p> ><o:p> </o:p></p= > >Hello all, <o:p></o:p></spa= n> ><o:p> </o:p></p= > >There is a current feature = to embed cloud init configuration which was originally part of the Run dial= og to be part of the create/ Edit VM dialog. This presents a challenge in t= erms of  good display of the hierarchies of information since the VM dialog is already having subtabs stacked verti= cally. Please find here (<a href=3D"http://www.ovirt.org/UX/cloud_init">htt= p://www.ovirt.org/UX/cloud_init</a>) alternate concepts of how we might rep= resent all the levels of hierarchy from the VM dialog sub tabs to the cloud init categories and the content (= which is also nested sometimes) for each.<o:p></o:p> ><o:p> </o:p></p= > >I have provided brief expla= nations of each concept and I would like your feedback on these ... esp wit= h regard to feasibility. The general goals that govern the various concepts= are - <o:p></o:p> ><o:p> </o:p></p= > >- Correct representation of= the hierarchy<o:p></o:p> >- Not overloading the users= with too much info and cluttering the screen<o:p></o:p> >- Not utilizing the same UI= paradigm ( like expand/ collapse) for different types of info. For example= , we have categories of info where the fields are distinct from each other = and then we have times where the user is able to add multiple instances of the same object type - e.g NICs and have= the same set of fields be defined for each instance. <o:p></o:p> ><o:p> </o:p> >Your feedback is appreciated.<o:p></o:p> ><o:p> </o:p> >Thanks<o:p></o:p> >Malini<o:p></o:p> </div> </div> </body> </html> --_000_EF26FC1776F7FF46BFC072393EFD13A2558049E0SERV070corpeldo_--

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[Engine-devel] [test email - sent at 12:30 IST]
by Eyal Edri 26 Dec '13

26 Dec '13

sorry for the noise, testing mailman. Eyal.

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[Engine-devel] Is there is time based task scheduling available in oVirt ?
by Shubhendu Tripathi 26 Dec '13

26 Dec '13

We are in a requirement where time based task scheduling is required for gluster tasks. I understand that, as is there is no such mechanism available in oVirt using which we can schedule tasks like volume snaps creation at a given time and frequency. Wanted to know if there is some plan in near future for supporting this feature. This certainly would open other automation options in oVirt. Regards, Shubhendu

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