Icedtea-web: Enable debug+logging from applet <object> params?

[helpcrypto helpcrypto]

Hi Jiri, thanks for your reply.


As most of your explanation seems to question the purpose of this, I'll try
to be clear on that.

Using Oracle JRE ControlPanel you can view/hide the console and enable 3
levels of debug. As you said, ITW does something similar.
Many times, users don't have such settings, and they have default (no debug
enabled/hidden console) so logs are smaller or there isn't a log file.

I was trying to enable -using applet params- tracing/debuglevel for my
applet, so being able to ask the user for the log-file (and having a full
one, not a short one). In other words: let developers being able to enable
per-applet debuglevel.

Did I explanied myself properly this time?


Regards


On Wed, May 7, 2014 at 1:26 PM, Jiri Vanek <jvanek at redhat.com> wrote:

> On 05/07/2014 12:36 PM, helpcrypto helpcrypto wrote:
>
>> Hi.
>>
>>
>> According to [1] it could be possible to enable trace and logging for the
>> jvm using /defines/ "-D".
>>
>> Also, [2] states that any "safe" argument could be provided using
>> "java_arguments".
>>
>>
>> With both resources in mind and using ORACLE JRE, have tried to enable
>> logging by default, to being
>> able to get a full debug log for users which havent enabled -manually-
>> debugging on their control
>> panel. Tried things like:
>>
>>
>> <param name="java_arguments" value="-verbose:gc" />
>>
>
>
> this is jvm switch. It should work. properly. But note it is affecting
> behaviourour of JVM - not of plugin or javaws - no metter of itw od plugin.
> Also note, that to have efect, the JVM must be forked (intiial jvm read
> jnl, and start second jvm with new parameter added)
>
> This logging/trace can be controlled by all way JVM's  debug can be
> controlled.
>
>  or
>> <param name="java_arguments" value="-Ddeployment.trace.level=all" /> \
>>
>
> I dont know his one:(
>
>  or
>> <param name="java_arguments" value="-Djavaplugin.trace=true
>> -Djavaplugin.logging=true" />
>> or
>> <param name="java_arguments" value="-Djavaplugin.trace.option=liveconnect"
>> />
>>
>
> No, those - plugin specific - params are not supported by ITW ....
>
>
>> But none seems to work.
>>
>> Do Icedtea supports something similar? Is this possible? Should I fill a
>> bug, cause its an
>> interesting/unimplemented feature on Icedtea?
>>
>> To sum-up: I'll love to get a debug log, no matter if users have enabled
>> tracing/debug on their Java
>> Control Panel.
>>
>
> ... we do it differently.
>
>
>
> So the question is what you wont to achieve?
>
>
> In ITW, right now, all the debug is ON by default. Just hidden. It is
> logging into hidden console.
>
> Pleade note, we are now speaking about controlin of output of itw (and
> application run inside it)
>
> In itw settings, or by environment variable you can
>  - enable  level of ST/ERR out ( just three levels, nothing, errors, all)
>  - same for logging into file
>
> The console always receive everything. You are filtering it in runtime.
>  - The file is disabled by default
>  -  std/err outs are showing erros
>  - console is receiving all
>
> So first question  - do you care about output of jvm? There ishrdly
> something what we cna do.
> If you care about applications/itw output, then there is a lot what we can
> do.
>
> To manipulate with debug settings of itw from applet tag/jnlp file - tbh
> I'mnot fan of it:( What is it good for? Do you need to send the logs to
> your machine? Shouldnt then users just send what they wont to sent?
>
> J.
>
>
>>
>> Thanks a lot!
>>
>>
>> [1]
>> http://docs.oracle.com/javase/6/docs/technotes/guides/
>> deployment/deployment-guide/tracing_logging.html
>> [2] http://docs.oracle.com/javase/6/docs/technotes/guides/jweb/
>> applet/applet_deployment.html
>>
>
>
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