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From Mikael Ståldal <mikael.stal...@magine.com>
Subject Re: markers
Date Thu, 17 Sep 2015 14:58:24 GMT
Android have these levels (
http://developer.android.com/reference/android/util/Log.html):

ERROR
WARN
INFO
DEBUG
VERBOSE

Adding VERBOSE above DEBUG would be inconsistent with Android and thus
confusing.

On Thu, Sep 17, 2015 at 12:24 AM, Gary Gregory <garydgregory@gmail.com>
wrote:

> At first I was going to strongly recommend against using a custom level
> called BUSINESS. Custom levels have been a problem in the past at my work
> (IMO). Markers are really a perfect fit for this use-case. That got me to
> thinking about my previous idea on this of adding more levels to Log4j.
> Please bear with me. Today we have:
>
> OFF
> FATAL
> ERROR
> WARN
> INFO
> DEBUG
> TRACE
> ALL
>
> What I could use today are *these* levels too:
>
> OFF
> *EXIT*
> FATAL
> ERROR
> WARN
> *HEADLINE*
> INFO
> *VERBOSE*
> DEBUG
> TRACE
> ALL
>
> (EXIT is called when you System.exit(), which might not be loggable
> depending on I don't know what, HEADLINE is a lame name but I can't think
> of anything better, VERBOSE is obvious IMO)
>
> Which made me wonder if your BUSINESS level could fit in like this:
>
> OFF
> FATAL
> ERROR
> WARN
> *BUSINESS*
> INFO
> DEBUG
> TRACE
> ALL
>
> So maybe, just maybe, I could see that a BUSINESS level makes sense instead
> of a marker.
>
> Gary
>
>
> On Wed, Sep 16, 2015 at 2:34 PM, Nicholas Duane <nickdu@msn.com> wrote:
>
> > I was hoping on getting some replies to my last message as I'm trying to
> > figure out the best way to utilize the existing logging frameworks,
> > log4j(2) and log4net in our case, to log our business events and ensure
> the
> > business events flow to the correct destination.
> >
> > I think the two main suggestions were to either use markers or a separate
> > "well known" logger.
> >
> > As I mentioned in the previous message, I was about to write a sample
> > which used markers just to better understand how they work.  The first
> road
> > block I ran into is that log4net does not support markers, as far as I
> can
> > tell.  Now the implementation doesn't have to be the same on both windows
> > and linux, but that would certainly be a plus if it was.  Also, it
> doesn't
> > look like markers have been heavily adopted by many logging frameworks.
> > The one article I read only listed log4j2 and logback.
> >
> > In addition, while markers seem like they would be better at indicating
> > the type or category of event as opposed to using a level, you still have
> > to define a marker for each type I guess.  I could either define a custom
> > level or a custom marker.  Since markers are not available in log4net and
> > custom levels are, a custom level might work out better for us.
> >
> > Using a "well known" logger to log business events seems like a
> reasonable
> > approach.  And while I don't see any major downsides with going this
> route,
> > it seems that a piece of code which is logging using their own logger
> > should be able to log a business event with that same logger.  It was
> > stated previously that the level indicates the importance of the event
> and
> > the logger indicates the types of events, or why someone might want to
> look
> > at the events.  The example given was some market data code which used
> its
> > own logger to log market data information.  That seems totally
> reasonable,
> > however, it doesn't seem to fit my example.  In our case any component
> can
> > emit a business event.
> >
> > I then thought that maybe I could use the EventLogger, which I think
> > someone might have mentioned along the way.  I was hoping to try that out
> > also, assuming that allowed me to pass a marker in whatever methods it
> > exposed.  However, I only see a static marker property on the EventLogger
> > class.
> >
> > The other option which I'm considering is exposing a property on my event
> > object which indicates the category of event.  At the moment I have a
> > "type" property which, of course, indicates the event type.  However,
> this
> > will be different for every different business event and thus I need
> > another property which tells me that the event is a "business" event.
> Then
> > I was thinking I could write a filter which checks the message object to
> > see if it's one of my events and if so use the "category" to forward to
> the
> > appropriate destination.
> >
> > Am I missing any other viable solutions?
> >
> > Thanks,
> > Nick
> >
> > > From: nickdu@msn.com
> > > To: log4j-user@logging.apache.org
> > > Subject: markers
> > > Date: Tue, 15 Sep 2015 22:25:37 -0400
> > >
> > >
> > >
> > >
> > > I was about to starting writing a sample to see how markers work and to
> > see if they could be used for logging business events instead of using a
> > custom level.  While I might have mentioned log4net in passing, we're
> > trying to capture these business events using existing logging
> frameworks.
> > The thinking is that we'd use log4net on windows and log4j(2) on linux
> (no
> > facade).  Ideally the design would be similar across both platforms.
> That
> > being said, I'm surprised at how different log4net is from log4j(2).  It
> > appears log4net doesn't support markers.  While we don't have to have the
> > same solution for both platforms, it would be nice if the solutions were
> > the same or similar.
> > >
> > > I also looked at the EventLogger and that class doesn't have any
> > overloads which take a marker, just a static marker property.  I guess
> the
> > EventLogger can be assigned only a single marker?
> > >
> > > Thanks,
> > > Nick
> > >
> > >
> > >
> > >
> >
> >
>
>
>
> --
> E-Mail: garydgregory@gmail.com | ggregory@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
>



-- 
[image: MagineTV]

*Mikael Ståldal*
Senior software developer

*Magine TV*
mikael.staldal@magine.com
Regeringsgatan 25  | 111 53 Stockholm, Sweden  |   www.magine.com

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