[Yanel-dev] Re: Use of ImageMagick with Yanel/Yarep

[Michael Wechner]

Mehmet Birgi wrote:
> On Thu, Jun 24, 2010 at 11:10 PM, Michael Wechner
> <michael.wechner at wyona.com> wrote:
>   
>> Cedric Staub wrote:
>>     
>>> On Thu, 24 Jun 2010 13:47:02 +0200
>>> Mehmet Birgi <mehmet.birgi at wyona.com> wrote:
>>>
>>>
>>>       
>>>> Question: is there a platform independent way to integrate this into
>>>> the Yanel build system?
>>>>
>>>>         
>>> I don't think there would be an easy way to do so, considering all the
>>> diffrent flavors of Linux/Unix that are out there and the various package
>>> managers that they use (for example, aptitude only works on Debian/Ubuntu
>>> systems). What you could probably do is check if ImageMagick is installed
>>> and if not print a warning message;
>>>       
>> well, I would assume that im4java throws an exception
>>
>> @Memo: What does the log-file say if ImageMagick is not installed?
>>     
>
> This is the error message Bruno had forwarded. In the log, there was
> nothing special/different, as far as I can remember, only longer,, and
> it was possible to see that the error originated in the method
> resize() of ImageScaler, but I would have to reproduce the error to
> get the whole thing, if you think it would help.

yes, I think it would help to reproduce this exception and check whether 
there is a possibility
to catch this somehow nicely.

Also you might want to consider sending an email to the im4java 
community and ask there
how to deal with such a situation.

And last but not least I assume you are aware of

src/contributions/resources/image/resource.xml

right? This resource type allows scaling of jpg images and AFAIK it 
works quite well.

Cheers

Michi


>  The first line here
> is all there was really:
>
>
>            java.lang.Exception: Due to an exception the request has been
> canceled. Exception message: Cannot run program "convert": java.io.IOException:
> error=2, No such file or directory
>
>            java.lang.Exception: Due to an exception the request has been
> canceled. Exception message: Cannot run program "convert": java.io.IOException:
> error=2, No such file or directory
>                at
> org.wyona.yanel.impl.resources.jellyadapterofcmdv3.JellyAdapterForCUDResource.getView(JellyAdapterForCUDResource.java:148)
>                at
> org.wyona.yanel.servlet.YanelServlet.getContent(YanelServlet.java:536)
>                at
> org.wyona.yanel.servlet.YanelServlet.doPost(YanelServlet.java:740)
>                at
> org.wyona.yanel.servlet.YanelServlet.service(YanelServlet.java:280)
>                at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
>                at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
>                at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>                at
> org.wyona.yanel.servlet.communication.YanelFilter.doFilter(YanelFilter.java:37)
>                at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>                at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>                at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
>                at
> org.apache.catalina.core.StandardContextValve.invoke(StandardC
>
>
>   
>>     
>>>  that way the system administrator knows what he needs to do in order to
>>> fix it (figuring out how to install it should be the lesser problem).
>>>
>>> Of course, I'm no expert on the Yanel build system, so please correct me
>>> if I'm wrong ;-).
>>>
>>>       
>> I don't think this has much to do with the Yanel build process generally
>> speaking. Especially if you are going
>> to deploy binaries, which you should on a productive system!
>>
>> I think to improve the situation you have two options:
>>
>> 1)  Improve the "exception handling" of your resource type if ImageMagik is
>> not installed
>>
>> 2) Customize/enhance the build.xml of your resource type using
>> im4java/ImageMagik to output a warning
>> that ImageMagik could not be found, whereas this warning should be
>> ignorable, because the environment
>> on which you build your binaries might not have ImageMagik installed.
>>
>> and of course documentation, documentation, documentation ;-)
>>
>> Cheers
>>
>> Michi
>>     
>>> Cheers,
>>> Cedric
>>>
>>>       
>> --
>> Yanel-development mailing list Yanel-development at wyona.com
>> http://lists.wyona.org/cgi-bin/mailman/listinfo/yanel-development
>>
>>     
>
>
>
>