Re: efficient resource downloading

2010-05-11 Thread Igor Vaynberg 
On Tue, May 11, 2010 at 11:24 AM, Zilvinas Vilutis  wrote:
> If you need to have the current session in a servlet, you may use the
> WicketSessionFilter which "injects" the wicket session into a
> ServletRequest.

rather it binds it to the threadlocal so you can say Session.get()

-igor

>
> In any way you want to use it - your chosen implementation of security part
> will still be heavyweight.
>
> Not sure if you can submit authentification details using a post request -
> but I'd suggest to use some simple web server as "lighthttpd" or "thttpd"
> for frequent resource access secured lighter then spring.
>
> Žilvinas Vilutis
>
> Mobile:   (+370) 652 38353
> E-mail:   cika...@gmail.com
>
>
> On Tue, May 11, 2010 at 11:06 AM, vladimir.kovalyuk wrote:
>
>>
>> Since you wrote that you employ Spring MCV I presume you don't use any page
>> state when constructing your dynamic resource, instead you parse URL
>> parameters. Thus your resource seems to be shared resource.
>>
>> I used to extend WebResource (provide your own dynamic implementation of
>> IResourceStream) for that task and register it as a shared resource at the
>> application initialization time. For the resources that have persistent
>> URLs
>> I used to mount them with shared resource url coding strategy.
>>
>> Since shared resources are handled by Wicket filter I always have access to
>> the session and can check permissions.
>>
>> I like that I can handle the cache by throwing
>> AbortWithWebErrorCodeException(HttpServletResponse.SC_NOT_MODIFIED)
>> exception if the resource hasn't changed since recent download.
>>
>> I would like to ask Igor to comment on that. Code maintainers expressed
>> some
>> thoughts about future support of IResourceStream.
>>
>> --
>> View this message in context:
>> http://apache-wicket.1842946.n4.nabble.com/efficient-resource-downloading-tp2164866p2174267.html
>> Sent from the Wicket - User mailing list archive at Nabble.com.
>>
>> -
>> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
>> For additional commands, e-mail: users-h...@wicket.apache.org
>>
>>
>

-
To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
For additional commands, e-mail: users-h...@wicket.apache.org

Re: efficient resource downloading

2010-05-11 Thread Zilvinas Vilutis 
If you need to have the current session in a servlet, you may use the
WicketSessionFilter which "injects" the wicket session into a
ServletRequest.

In any way you want to use it - your chosen implementation of security part
will still be heavyweight.

Not sure if you can submit authentification details using a post request -
but I'd suggest to use some simple web server as "lighthttpd" or "thttpd"
for frequent resource access secured lighter then spring.

Žilvinas Vilutis

Mobile:   (+370) 652 38353
E-mail:   cika...@gmail.com


On Tue, May 11, 2010 at 11:06 AM, vladimir.kovalyuk wrote:

>
> Since you wrote that you employ Spring MCV I presume you don't use any page
> state when constructing your dynamic resource, instead you parse URL
> parameters. Thus your resource seems to be shared resource.
>
> I used to extend WebResource (provide your own dynamic implementation of
> IResourceStream) for that task and register it as a shared resource at the
> application initialization time. For the resources that have persistent
> URLs
> I used to mount them with shared resource url coding strategy.
>
> Since shared resources are handled by Wicket filter I always have access to
> the session and can check permissions.
>
> I like that I can handle the cache by throwing
> AbortWithWebErrorCodeException(HttpServletResponse.SC_NOT_MODIFIED)
> exception if the resource hasn't changed since recent download.
>
> I would like to ask Igor to comment on that. Code maintainers expressed
> some
> thoughts about future support of IResourceStream.
>
> --
> View this message in context:
> http://apache-wicket.1842946.n4.nabble.com/efficient-resource-downloading-tp2164866p2174267.html
> Sent from the Wicket - User mailing list archive at Nabble.com.
>
> -
> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
> For additional commands, e-mail: users-h...@wicket.apache.org
>
>

Re: efficient resource downloading

2010-05-11 Thread vladimir.kovalyuk 

Since you wrote that you employ Spring MCV I presume you don't use any page
state when constructing your dynamic resource, instead you parse URL
parameters. Thus your resource seems to be shared resource.

I used to extend WebResource (provide your own dynamic implementation of
IResourceStream) for that task and register it as a shared resource at the
application initialization time. For the resources that have persistent URLs
I used to mount them with shared resource url coding strategy.

Since shared resources are handled by Wicket filter I always have access to
the session and can check permissions.

I like that I can handle the cache by throwing
AbortWithWebErrorCodeException(HttpServletResponse.SC_NOT_MODIFIED)
exception if the resource hasn't changed since recent download.

I would like to ask Igor to comment on that. Code maintainers expressed some
thoughts about future support of IResourceStream.

-- 
View this message in context: 
http://apache-wicket.1842946.n4.nabble.com/efficient-resource-downloading-tp2164866p2174267.html
Sent from the Wicket - User mailing list archive at Nabble.com.

-
To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
For additional commands, e-mail: users-h...@wicket.apache.org

Re: efficient resource downloading

2010-05-11 Thread Zilvinas Vilutis 
See no problem of using spring services within a servlet, see my servlet
example: http://pastebin.com/6tWstvAL

Žilvinas Vilutis

Mobile:   (+370) 652 38353
E-mail:   cika...@gmail.com


On Mon, May 10, 2010 at 8:10 PM, Joe Fawzy  wrote:

> Hi dear
> actually , access control and dynamic file generation requires using
> services which is injected by spring
> this cannot be easily done in pure servlet
>
> my current solution using spring @Controller and write diretly to the
> servlet response is somethingvery similar to writing a servlet
> but as i am planning to deploy on appengine, the startup time for spring
> especially when using spring mvc cannot be accepted (more than 30 sec)
>
> so i am tring to figure out a pure wicket solution
>
> thanks for your help
> Joe
>
> On Mon, May 10, 2010 at 5:34 AM, Igor Vaynberg  >wrote:
>
> > write a servlet
> >
> > -igor
> >
> > On Sun, May 9, 2010 at 6:37 PM, Joe Fawzy  wrote:
> > > Hi
> > > i want to know if this is an efficient way to download some files
> > >
> > > i want my users to be able to download certain files just to registerd
> > users
> > > only so i can put that logic in the page constructor
> > > but is this efficient way to do this as this may be called thausands of
> > > times per hour   (the files generated dynamically)
> > > does the construction of a page and all the other bits is heavy for
> such
> > a
> > > task
> > >
> > > i am using spring MVC right now with its rest style model and
> annotation
> > but
> > > it seems to me too heavyweight for the task
> > >
> > > so is this appropriate?
> > > is there another way more efficient?
> > >
> > > public class DownloadManagerPage extends WebPage{
> > >private static final long serialVersionUID = 1L;
> > >
> > >public DownloadManagerPage(PageParameters parameters) {
> > >super(parameters);
> > >if (registeredUser(parameters)) {
> > >getRequestCycle().setRequestTarget(new
> > > ResourceStreamRequestTarget(new AbstractResourceStreamWriter() {
> > >private static final long serialVersionUID = 1L;
> > >public void write(OutputStream output) {
> > >output
> > >}
> > >
> > >public String getContentType() {
> > >return ..;
> > >}
> > >}));
> > >}
> > >}
> > >
> > >private boolean registeredUser(PageParameters parameters) {
> > >return ;
> > >}
> > > }
> > >
> > > thanks in advance
> > > Joe
> > >
> >
> > -
> > To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
> > For additional commands, e-mail: users-h...@wicket.apache.org
> >
> >
>

Re: efficient resource downloading

2010-05-10 Thread Joe Fawzy 
Hi dear
actually , access control and dynamic file generation requires using
services which is injected by spring
this cannot be easily done in pure servlet

my current solution using spring @Controller and write diretly to the
servlet response is somethingvery similar to writing a servlet
but as i am planning to deploy on appengine, the startup time for spring
especially when using spring mvc cannot be accepted (more than 30 sec)

so i am tring to figure out a pure wicket solution

thanks for your help
Joe

On Mon, May 10, 2010 at 5:34 AM, Igor Vaynberg wrote:

> write a servlet
>
> -igor
>
> On Sun, May 9, 2010 at 6:37 PM, Joe Fawzy  wrote:
> > Hi
> > i want to know if this is an efficient way to download some files
> >
> > i want my users to be able to download certain files just to registerd
> users
> > only so i can put that logic in the page constructor
> > but is this efficient way to do this as this may be called thausands of
> > times per hour   (the files generated dynamically)
> > does the construction of a page and all the other bits is heavy for such
> a
> > task
> >
> > i am using spring MVC right now with its rest style model and annotation
> but
> > it seems to me too heavyweight for the task
> >
> > so is this appropriate?
> > is there another way more efficient?
> >
> > public class DownloadManagerPage extends WebPage{
> >private static final long serialVersionUID = 1L;
> >
> >public DownloadManagerPage(PageParameters parameters) {
> >super(parameters);
> >if (registeredUser(parameters)) {
> >getRequestCycle().setRequestTarget(new
> > ResourceStreamRequestTarget(new AbstractResourceStreamWriter() {
> >private static final long serialVersionUID = 1L;
> >public void write(OutputStream output) {
> >output
> >}
> >
> >public String getContentType() {
> >return ..;
> >}
> >}));
> >}
> >}
> >
> >private boolean registeredUser(PageParameters parameters) {
> >return ;
> >}
> > }
> >
> > thanks in advance
> > Joe
> >
>
> -
> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
> For additional commands, e-mail: users-h...@wicket.apache.org
>
>

Re: efficient resource downloading

2010-05-09 Thread Igor Vaynberg 
write a servlet

-igor

On Sun, May 9, 2010 at 6:37 PM, Joe Fawzy  wrote:
> Hi
> i want to know if this is an efficient way to download some files
>
> i want my users to be able to download certain files just to registerd users
> only so i can put that logic in the page constructor
> but is this efficient way to do this as this may be called thausands of
> times per hour   (the files generated dynamically)
> does the construction of a page and all the other bits is heavy for such a
> task
>
> i am using spring MVC right now with its rest style model and annotation but
> it seems to me too heavyweight for the task
>
> so is this appropriate?
> is there another way more efficient?
>
> public class DownloadManagerPage extends WebPage{
>    private static final long serialVersionUID = 1L;
>
>    public DownloadManagerPage(PageParameters parameters) {
>        super(parameters);
>        if (registeredUser(parameters)) {
>            getRequestCycle().setRequestTarget(new
> ResourceStreamRequestTarget(new AbstractResourceStreamWriter() {
>                private static final long serialVersionUID = 1L;
>                public void write(OutputStream output) {
>                            output
>                }
>
>                public String getContentType() {
>                    return ..;
>                }
>            }));
>        }
>    }
>
>    private boolean registeredUser(PageParameters parameters) {
>        return ;
>    }
> }
>
> thanks in advance
> Joe
>

-
To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
For additional commands, e-mail: users-h...@wicket.apache.org

efficient resource downloading

2010-05-09 Thread Joe Fawzy 
Hi
i want to know if this is an efficient way to download some files

i want my users to be able to download certain files just to registerd users
only so i can put that logic in the page constructor
but is this efficient way to do this as this may be called thausands of
times per hour   (the files generated dynamically)
does the construction of a page and all the other bits is heavy for such a
task

i am using spring MVC right now with its rest style model and annotation but
it seems to me too heavyweight for the task

so is this appropriate?
is there another way more efficient?

public class DownloadManagerPage extends WebPage{
private static final long serialVersionUID = 1L;

public DownloadManagerPage(PageParameters parameters) {
super(parameters);
if (registeredUser(parameters)) {
getRequestCycle().setRequestTarget(new
ResourceStreamRequestTarget(new AbstractResourceStreamWriter() {
private static final long serialVersionUID = 1L;
public void write(OutputStream output) {
output
}

public String getContentType() {
return ..;
}
}));
}
}

private boolean registeredUser(PageParameters parameters) {
return ;
}
}

thanks in advance
Joe