Hey, it's better than having to use sun.util.Reflection!
On 6 August 2014 20:19, Gary Gregory <garydgreg...@gmail.com> wrote: > And worse: vendor specific! > > Gary > > > On Wed, Aug 6, 2014 at 9:05 PM, Remko Popma <remko.po...@gmail.com> wrote: > > > Oooh... A little naughty, but a lot of fun! :-) > > Thanks for the pointer! > > > > Sent from my iPhone > > > > > On 2014/08/07, at 9:44, Gary Gregory <garydgreg...@gmail.com> wrote: > > > > > > With some debug API hackery: > > > > > > http://docs.oracle.com/javase/7/docs/jdk/api/jpda/jdi/com/sun/jdi/StackFrame.html > > > > > > Gary > > > > > > > > >> On Wed, Aug 6, 2014 at 8:36 PM, Remko Popma <remko.po...@gmail.com> > > wrote: > > >> > > >> I don't follow... If you walk the stack trace you can find the name of > > the > > >> original class whose main() method was called, but how would that give > > you > > >> access to the main method's parameter values? > > >> > > >> Sent from my iPhone > > >> > > >>> On 2014/08/07, at 9:26, Gary Gregory <garydgreg...@gmail.com> wrote: > > >>> > > >>> Yes you are right but the stack walker could be used even if you do > not > > >> control to source for main. Maybe a script calls a main and then my > app > > >> plugin gets called and I want to also follow the verbose command line > > >> setting. > > >>> > > >>> > > >>> Gary > > >>> > > >>> <div>-------- Original message --------</div><div>From: Ralph Goers < > > >> ralph.go...@dslextreme.com> </div><div>Date:08/06/2014 19:18 > > >> (GMT-05:00) </div><div>To: Log4J Users List < > > >> log4j-user@logging.apache.org> </div><div>Subject: Re: Set the file > > name > > >> based on command line args </div><div> > > >>> </div>Wouldn’t it be easier to have a Lookup that your main called > and > > >> just passed the arguments? But yeah, it should be possible to do what > > you > > >> are suggesting. > > >>> > > >>> Ralph > > >>> > > >>>> On Aug 6, 2014, at 4:09 PM, Gary Gregory <garydgreg...@gmail.com> > > >> wrote: > > >>>> > > >>>> I wonder if we could write a "MainArgumentsLookup" that finds the > main > > >>>> thread and walks up the stack to the public static main(String[]) > main > > >>>> methods and gets the arguments from the stack... > > >>>> > > >>>> Gary > > >>>> > > >>>> > > >>>> On Wed, Aug 6, 2014 at 6:54 PM, Ralph Goers < > > ralph.go...@dslextreme.com > > >>> > > >>>> wrote: > > >>>> > > >>>>> Well…. > > >>>>> > > >>>>> You would really be passing the name of the file to the Appender, > > not a > > >>>>> Logger. Loggers only reference Appenders so you can’t really > > configure > > >>>>> them with Appender configuration data. That said, Log4j 2 provides > a > > >> few > > >>>>> ways you could do this: > > >>>>> 1. Set a system property and reference it via ${sys:propertyName} > in > > >> the > > >>>>> configuration. The manual has examples of this. > > >>>>> 2. Create a custom Lookup Plugin and then register the file name > with > > >> the > > >>>>> Lookup. Then reference it from the configuration as ${myLookup: > > key} > > >>>>> where myLookup is the name of your custom Lookup and key is the > name > > >> that > > >>>>> represents the file name value. > > >>>>> 3. Create a custom Configuration the extends XMLConfiguration or > > >>>>> JSONConfiguration. Pass the file name to that class and have it add > > >> that as > > >>>>> a property to the properties Map in the configuration. The XML > could > > >> then > > >>>>> just reference it as ${propertyName}. > > >>>>> > > >>>>> Ralph > > >>>>> > > >>>>>> On Aug 6, 2014, at 2:03 PM, Arwen Pond <ap...@book.com> wrote: > > >>>>>> > > >>>>>> My application takes a parameter where the user can specify the > log > > >>>>> file. I'd like to pass this parameter to the Logger which uses a > > >>>>> FileAppender. I am not sure how to do this in log4j 2. > > >>>>>> > > >>>>>> Thanks, > > >>>>>> Arwen > > >>>>>> > > >>>>>> > > >>>>>> This electronic mail message contains information that (a) is or > > >>>>>> may be CONFIDENTIAL, PROPRIETARY IN NATURE, OR OTHERWISE > > >>>>>> PROTECTED > > >>>>>> BY LAW FROM DISCLOSURE, and (b) is intended only for the use of > > >>>>>> the addressee(s) named herein. If you are not an intended > > >>>>>> recipient, please contact the sender immediately and take the > > >>>>>> steps necessary to delete the message completely from your > > >>>>>> computer system. > > >>>>>> > > >>>>>> Not Intended as a Substitute for a Writing: Notwithstanding the > > >>>>>> Uniform Electronic Transaction Act or any other law of similar > > >>>>>> effect, absent an express statement to the contrary, this e-mail > > >>>>>> message, its contents, and any attachments hereto are not > > >>>>>> intended > > >>>>>> to represent an offer or acceptance to enter into a contract and > > >>>>>> are not otherwise intended to bind this sender, > > >>>>>> barnesandnoble.com > > >>>>>> llc, barnesandnoble.com inc. or any other person or entity. > > >>>>> > > >>>>> > > >>>>> > --------------------------------------------------------------------- > > >>>>> To unsubscribe, e-mail: log4j-user-unsubscr...@logging.apache.org > > >>>>> For additional commands, e-mail: > log4j-user-h...@logging.apache.org > > >>>> > > >>>> > > >>>> -- > > >>>> E-Mail: garydgreg...@gmail.com | ggreg...@apache.org > > >>>> Java Persistence with Hibernate, Second Edition > > >>>> <http://www.manning.com/bauer3/> > > >>>> JUnit in Action, Second Edition <http://www.manning.com/tahchiev/> > > >>>> Spring Batch in Action <http://www.manning.com/templier/> > > >>>> Blog: http://garygregory.wordpress.com > > >>>> Home: http://garygregory.com/ > > >>>> Tweet! http://twitter.com/GaryGregory > > >>> > > >>> > > >>> --------------------------------------------------------------------- > > >>> To unsubscribe, e-mail: log4j-user-unsubscr...@logging.apache.org > > >>> For additional commands, e-mail: log4j-user-h...@logging.apache.org > > >> > > >> --------------------------------------------------------------------- > > >> To unsubscribe, e-mail: log4j-user-unsubscr...@logging.apache.org > > >> For additional commands, e-mail: log4j-user-h...@logging.apache.org > > > > > > > > > -- > > > E-Mail: garydgreg...@gmail.com | ggreg...@apache.org > > > Java Persistence with Hibernate, Second Edition > > > <http://www.manning.com/bauer3/> > > > JUnit in Action, Second Edition <http://www.manning.com/tahchiev/> > > > Spring Batch in Action <http://www.manning.com/templier/> > > > Blog: http://garygregory.wordpress.com > > > Home: http://garygregory.com/ > > > Tweet! http://twitter.com/GaryGregory > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: log4j-user-unsubscr...@logging.apache.org > > For additional commands, e-mail: log4j-user-h...@logging.apache.org > > > > > > > -- > E-Mail: garydgreg...@gmail.com | ggreg...@apache.org > Java Persistence with Hibernate, Second Edition > <http://www.manning.com/bauer3/> > JUnit in Action, Second Edition <http://www.manning.com/tahchiev/> > Spring Batch in Action <http://www.manning.com/templier/> > Blog: http://garygregory.wordpress.com > Home: http://garygregory.com/ > Tweet! http://twitter.com/GaryGregory > -- Matt Sicker <boa...@gmail.com>
