2010/12/26 André Warnier <a...@ice-sa.com> > maven apache wrote: > >> 2010/12/25 André Warnier <a...@ice-sa.com> >> >> The logging page which I pointed you to, does not say that Tomcat uses >>> log4j. >>> It says that you /can/ configure Tomcat to use log4j, instead of the >>> default "juli" logging. It even provides instructions to do so. >>> >>> The AccessLogValve documentation page does not say either that it uses >>> log4j. >>> But what it does say at the very beginning, is that the output file is >>> changed every day at midnight. So if you only read the files up to last >>> night at midnight, you will never encounter the problem that something is >>> still writing to it. >>> >>> Also, I do not know what your ultimate purpose is, but there exist >>> already >>> several open-source programs which read a logfile in the format produced >>> by >>> the Tomcat AccessLogValve, parse it, and produce nice graphical >>> statistics >>> out of it (like webalizer or awstats). Maybe you are re-inventing >>> something >>> which already exists ? >>> >>> >> Unfortunately yes,our boss want our own analyzer system based on java. :( >> >> > Oh well, if the boss says so. > But then I would /still/ recommend writing something in java which reads > the above logfiles and feeds the database. Seems a bit more reliable and > more scaleable to me. >
Thanks for your kind. I prefer to this manner also. And it is why I ask problems in the stackover. :) Of course,it is a java io question,not related to tomcat. :) > What if the database is not available at some point for whatever reason ? > You stop tomcat, or you lose the information ? > In any case, you should look at the current access log files, and count the > number of lines which it writes per second|minute|hour, and ask yourself if > you want this number of transactions going into your database system in > real-time. Thanks for all your guys. > > > > > > >> Web access statistics are not usually something which needs to be >>> accurate >>> in real-time. >>> Having Tomcat writing them directly to a database may have a noticeable >>> impact on your applications performance. That's why this is something >>> usually done off-line. >>> >>> In fact,I just analyzer the logs before yesterday,it is also my boss who >> require the real-time(almost) analysis .:) >> >> Thank you anyway,although having Tomcat writing logs directly to a >> database >> may cause performance problem,it is another way. My boss will decide it :) >> >> >> >>> >>> maven apache wrote: >>> >>> Perhaps I’m not making myself clear,in fact I want to do some processing >>>> work to the the logs created by the access log >>>> valve< >>>> >>>> http://tomcat.apache.org/tomcat-6.0-doc/config/valve.html#Access_Log_Valve >>>> >>>>> to >>>>> >>>> database. >>>> >>>> For example:the log: >>>> >>>> 10.33.2.45 - - [08/Dec/2010:08:44:43 +0800] "GET /poi.txt HTTP/1.1" >>>> 200 672 "-" "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; >>>> rv:1.9.2.8) Gecko/20100722 Firefox/3.6.8" >>>> >>>> will be saved in the db in this format: >>>> >>>> ip time method >>>> uri status bytes browser platform >>>> >>>> >>>> ------------------------------------------------------------------------------------------------------------------------------------------------------------ >>>> >>>> 10.33.2.45 2010-10-08 08:44:43 GET /poi.txt 200 672 >>>> Firefox/3.6.8 winxp >>>> >>>> And now I meet some problems when I read the log file like: >>>> localhost_access_log.2010-12-20.txt >>>> >>>> I read the file line by line,but sometime I can not get a complete line >>>> since this file may be written in. >>>> >>>> So,someone suggest me add a db appender(log4j),which will do the >>>> procesing >>>> work and then export the log to db. >>>> >>>> ------- >>>> >>>> Now,from the link you give me ,it seems that tomcat does use log4j to >>>> create >>>> its access log. >>>> >>>> >>>> 2010/12/25 André Warnier <a...@ice-sa.com> >>>> >>>> Hi. >>>> >>>>> It is not very clear what you are asking, specially since you do not >>>>> specify which version of Tomcat your are using, under which Java >>>>> version >>>>> and >>>>> on which platform. >>>>> >>>>> Assuming you are using Tomcat 6.0.x, the on-line documentation for >>>>> logging >>>>> is here : >>>>> >>>>> http://tomcat.apache.org/tomcat-6.0-doc/logging.html >>>>> >>>>> Maybe read it first, and then come back if you have a specific question >>>>> ? >>>>> (But then try to specify the question clearly) >>>>> >>>>> maven apache wrote: >>>>> >>>>> Hi: >>>>> >>>>>> I wonder how is the tomcat log generated,I mean the log like this; >>>>>> >>>>>> localhost_access_log.2010-12-20.txt >>>>>> >>>>>> I want to export the logs to db. Some one suggestion I directly add >>>>>> one Appender <http://logging.apache.org/log4j/1.2/apidocs/index.html> >>>>>> >>>>>> if tomcat also uses log4j to generate the logs and I have access to >>>>>> the tomcat's log4j config file. >>>>>> >>>>>> More details can be found in this post: >>>>>> >>>>>> http://stackoverflow.com/questions/4486620/randomaccessfile-probelm >>>>>> >>>>>> So I wonder if this is possible? >>>>>> >>>>>> >>>>>> --------------------------------------------------------------------- >>>>>> >>>>> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >>>>> For additional commands, e-mail: users-h...@tomcat.apache.org >>>>> >>>>> >>>>> >>>>> --------------------------------------------------------------------- >>> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >>> For additional commands, e-mail: users-h...@tomcat.apache.org >>> >>> >>> >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > >
