[ovirt-devel] How To Auto Set oVirt RESTApi Session？

王成俊 wcj2007 at gmail.com
Mon Dec 8 05:51:16 UTC 2014 

Oh,Thanks for your detailed answers,I think I know how to resolve my
problem.

        Thanks again!

Best Regards!

2014-12-05 0:19 GMT+08:00 Alexander Wels <awels at redhat.com>:

> On Thursday, December 04, 2014 10:57:43 AM 王成俊 wrote:
> > I'm sorry I did not explain my needs clearly.
> >
> > In my case,I want to redesign the WebAdmin login GUI and add some
> > javascript in my WebAdmin login page to do many own logic.At present I
> > don't know how to add javascript in gwt framework,so I have to make a
> > servlet to alternative the original WebAdmin login GUI.
> >
> > After admin user log in the WebAdmin Portal through my servlet,UIPlugin
> > which use restapi to get data in the portal cannot automate get the
> > user's certificate,the uiplugin show me a prompt to input the username
> and
> > password.
> >
>
> Okay so if I understand correctly there are 2 parts to your issue.
>
> 1. You want an alternate login screen for which you wrote your own servlet
> that displays your login screen.
> 2. You have a UI plugin that needs the rest api credentials to make calls
> to
> the REST api.
>
> - For 1, A consequence of what you are describing to me, is that you will
> need
> to compile and package ovirt with your custom extension yourself. Which may
> potentially break if we ever make changes to the code. I highly suggest you
> keep an eye out for the SSO capability we are working on in 3.6. But for
> now I
> guess you can do the following, which can and probably will break with each
> version of ovirt.
>
> The source code for the login window in webadmin is in:
>
> rontend/webadmin/modules/webadmin/src/main/java/org/ovirt/engine/ui/webadmin/section/login/presenter
> and view. You can alter it whatever way you want to do your custom stuff.
> However this requires you to know GWT.
>
> If you want to do the servlet approach:
>  look in
>
> frontend/webadmin/modules/frontend/src/main/java/org/ovirt/engine/ui/frontend/server/gwt/GenericApiGWTServiceImpl.java
> at the login and logOff methods. Do something similar to that in your
> servlet
> when you submit the form from your servlet. After you login, you can
> redirect
> the browser to the webadmin URL, at that point it should recognize you are
> logged in and show the webadmin while bypassing the original login screen.
> This will work if you servlet lives in the same context as the webadmin
> servlet.
>
> Again, both of these approached will probably work, but depend on internal
> code which can and will change over time, so you will have to maintain your
> code to match. When the SSO capability is fully rolled out you should be
> able
> to write your own login screen that doesn't depend on internal structures
> which will make maintaining that much easier for you. I believe this is
> scheduled for the 3.6 timeframe.
>
> - For 2, in your UI plugin, you need to hook into the
> RestApiSessionAcquired
> event. Its use is described here [1]. You can pass the session id in that
> event as a header to your request to the REST api and that makes the
> requests
> succeed. Examples of code that do that are available in the sample UI
> plugins
> on that page.
>
> Alexander
>
> [1] http://www.ovirt.org/Features/UIPlugins#REST_API_integration
>
> > I am looking forward to your guide!
> >
> >         Thanks!
> >
> > Best regards!
> >
> > 2014-12-03 1:04 GMT+08:00 Vojtech Szocs <vszocs at redhat.com>:
> > > ----- Original Message -----
> > >
> > > > From: "Alexander Wels" <awels at redhat.com>
> > > > To: "王成俊" <wcj2007 at gmail.com>
> > > > Cc: devel at ovirt.org
> > > > Sent: Tuesday, December 2, 2014 1:59:21 PM
> > > > Subject: Re: [ovirt-devel] How To Auto Set oVirt RESTApi Session？
> > > >
> > > > On Tuesday, December 02, 2014 09:45:49 AM 王成俊 wrote:
> > > > > Hi,awels:
> > > > >      Thanks for your reply!
> > > > >
> > > > >      I make this servlet to run the backend action which
> > > > >
> > > > > names "LoginAdminUser", because I want to check admin log in with
> > > > > it,so
> > > > > that my engine no need to log in through engine's loginpopupview.
> > >
> > > Hm, so you're trying to automate WebAdmin GUI login? Can you please
> > > explain your use case without any technical (servlet etc.) details?
> > >
> > > > >      But when I log in through my servlet,the restapi can not get
> the
> > > > >
> > > > > user's certificate.
> > > > >
> > > > >      Can you tell me how to set and resume the restapi session in
> my
> > >
> > > case?
> > >
> > > > >      Thanks!
> > > > >
> > > > > Best Regards!
> > > >
> > > > You can login to the REST api using standard http connection
> techniques.
> > >
> > > For
> > >
> > > > instance basic auth you can login doing the following:
> > > >
> > > > http://<user>%40<domain>:<password>@<engine_host>/ovirt-engine/api
> > > >
> > > > Will list the available REST api.
> > > >
> > > > But I am still not clear on what you are trying to do. Are you
> trying to
> > > > write
> > > > your own external servlet, that calls the REST api to do things for
> you?
> > >
> > > Or
> > >
> > > > are you trying to write a servlet that lives inside the context of
> the
> > >
> > > engine
> > >
> > > > and implements a new action?
> > > >
> > > > Also please reply all, so we can keep the discussion on the mailing
> list
> > >
> > > so
> > >
> > > > other people can find it in the future.
> > > >
> > > > Alexander
> > > >
> > > > > 2014-12-02 5:42 GMT+08:00 Alexander Wels <awels at redhat.com>:
> > > > > > On Monday, December 01, 2014 04:56:04 PM 王成俊 wrote:
> > > > > > > Dear Sir：
> > > > > > >
> > > > > > >          I am a new one in studing ovirt engine.Now,I have a
> > >
> > > Servlet in
> > >
> > > > > > > org.ovirt.engine.ui.frontend.server.gwt package.
> > > > > > >
> > > > > > >          I want to call
> > >
> > > *Frontend.getInstance().getLoginHandler().**onLoginSuccess(userName,
> > >
> > > > > > > password, domain)* to set session for restapi in this servlet.
> > > > > > >
> > > > > > >          But when I visit this servlet,it occur to show me an
> > > > > > >          error
> > > > > > >          which
> > > > > > >
> > > > > > > just like "*JBWEB000071: root cause
> > >
> > > java.lang.ClassNotFoundException:
> > > > > > > org.ovirt.engine.ui.uicompat.IFrontendActionAsyncCallback from
> > >
> > > [Module
> > >
> > > > > > > &quot;deployment.engine.ear.webadmin.war:main&quot; from
> Service
> > >
> > > Module
> > >
> > > > > > > Loader]*". I found that this error is occured by calling*
> > > > > > > Frontend.getInstance()*.
> > > > > > >
> > > > > > >          Can you tell me how to resolve this problem or a new
> way
> > >
> > > to
> > >
> > > > > > >          set
> > > > > > >
> > > > > > > and resume restapi session in a servlet package of
> > > > > > > org.ovirt.engine.ui.front.server.gwt like the
> > >
> > > RestApiSessionManager in
> > >
> > > > > > > org.ovirt.engine.ui.webadmin.plugin.restapi package?
> > > > > > >
> > > > > > >            thanks!
> > > > > > >
> > > > > > > Best Regards!
> > > > > >
> > > > > > Hi,
> > > > > >
> > > > > > The problem you are experiencing is the fact the
> > >
> > > Frontend.getInstance()
> > >
> > > > > > is
> > > > > > a
> > > > > > frontend (client, which get compiled to javascript) class, and
> the
> > > > > > servlet
> > > > > > is
> > > > > > on the server side where this class is not defined (as it is
> > > > > > frontend
> > > > > > only).
> > > > > > Maybe if you could explain what you are trying to do we could
> assist
> > > > > > better.
> > > > > >
> > > > > > We have a mechanism of getting the REST api session on the front
> end
> > >
> > > when
> > >
> > > > > > you
> > > > > > log in. On the backend you don't really need that, since you are
> on
> > >
> > > the
> > >
> > > > > > backend. So your question sort of confuses me at this point.
> > > > > >
> > > > > > Alexander
> > > >
> > > > _______________________________________________
> > > > Devel mailing list
> > > > Devel at ovirt.org
> > > > http://lists.ovirt.org/mailman/listinfo/devel
>
>


-- 
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