Hello, I am back with a problem due to a solution that I implemented
with FileAppender.
I will try to resume the situation:
I am trying to figure out if it is possible to create a log file
dynamically just when a java process starts with the Process ID (BPM) as
part of the name of the log file.
I am in a project using BEA - Workshop Integration in a Windows
plataform.
I am talking about BPM (Business Process).
There are many business process in a eai project.
Those processes in my case are started (instanciated) by an
insert/update/delete trigger event in an Oracle table.
So the point is to create a log file to each time a process occurs.
There is a process id generated for each instance of a business
process.
I tryed first manipulating direct the configuration xml file creating
appenders and categories to filter logs of java class (the BPM class).
Then I created a system property, as sugestion, to keep the ProcessId
setted in run time, and to try to create the file with this property
<param name="File" value="${pid}workshop.log" />
But it didnt work because the logs seems to be created at the
initialization of the web server, and I couldn't change the name of the
file dynamically. (I copied the discuss about this problem below)
Then I implemented the creation of the file dynamically with
FileAppender. It is working good, except for:
** Now comes the problem: all the log files that has been created are
locked by the web server (WebLogic). We can only delete or move them
when we shutdown the server...
This is how I implemented. I called this method each time an instance
of BPM is created.
public org.apache.log4j.Logger getProcessLogger(JpdContext context,
String className){
String fileName = className.substring(className.lastIndexOf(".")+1)
+ "_"+ context.getInstanceId();
org.apache.log4j.Logger procLog4j =
org.apache.log4j.Logger.getLogger(fileName);
FileAppender appender = null;
String pattern = "%d{ISO8601} %-5p: %m%n";
PatternLayout layout = new PatternLayout(pattern);
try {
appender = new FileAppender(layout, "logDir/" + fileName +
".log");
procLog4j.addAppender(appender);
procLog4j.setLevel((Level) Level.INFO);
} catch(Exception e) {
e.printStackTrace();
}
return procLog4j;
}
Here is the workshop help
http://e-docs.bea.com/workshop/docs81/doc/en/core/index.html
Here is the complete link to the configuration file of workshop.
http://e-docs.bea.com/workshop/docs81/doc/en/workshop/reference/configfiles/con_knexLogCfg_xml_ConfigurationFile.html?skipReload=true
Does anyone knows why it is locked and how to solve?
Thanks for help.
Silvana.
>>> "James Stauffer" <[EMAIL PROTECTED]> 30/03/2006 13:43 >>>
My plan does depend on setting the system property before it is
configured. I know that can be difficult in some environments. If
two process are running in the same JVM then they would definitely
have the same process id (assuming you meant a unix-type pid).
To adress you real issue I would need more info about how are are
running. So you have two apps in the same app server? What do you
mean by process id?
On 3/30/06, Silvana Lima <[EMAIL PROTECTED]> wrote:
> Hi again James,
>
> It didnt work the setting of System property, maybe because I am not
> being able to set in the correct time and place.
> I am new in bea workshop integration and also in log4j api.
> What happened was that when it came to the point that I set the
System
> propety, the log file was already created without the process Id
written
> on its name.
>
> I also would like to say something about the 2 process instances
> running together. I think they are running in the same JVM, because
the
> aplication is deployed in the same server, dont you think?
>
> But thanks for the ideas, it is working now with the FileAppender
> solution.
> Silvana.
>
> >>> "James Stauffer" <[EMAIL PROTECTED]> 29/03/2006 18:19 >>>
> Yes, that should work. Those two processes will use 2 different
JVMs
> and there shouldn't be any conflicts.
>
> On 3/29/06, Silvana Lima <[EMAIL PROTECTED]> wrote:
> > ahh, now I got it!
> > But will it work if there is more than one instance of the same
> process
> > running at the same time?
> > I mean, two processes send out logs to the same appender and
writing
> on
> > different lgo files?
> > I will test!
> > Thanks.
> >
> > >>> [EMAIL PROTECTED] 29/03/2006 17:44 >>>
> > To do that using a config file, have your program call
> > System.setProperty("pid", pid) before log4j is configured and use
> the
> > following in your config:
> > <param name="File" value="${pid}workshop.log" />
> >
> > On 3/29/06, Silvana Lima <[EMAIL PROTECTED]> wrote:
> > > Sorry but I didnt understand what you meant.
> > >
> > > I found this tutorial
> > >
> >
>
http://supportweb.cs.bham.ac.uk/documentation/tutorials/docsystem/build/tutorials/log4j/log4j.html#LOG4J-Basics-Layout
>
> >
> > >
> > >
> > > I am trying to implement with FileAppender
> > >
> > > org.apache.log4j.Logger myLog =
> > > org.apache.log4j.Logger.getLogger(classeName);
> > > FileAppender appender = null;
> > > try {
> > > appender = new FileAppender(new PatternLayout(),
> ClassName
> > +
> > > "_"+ context.getInstanceId());
> > > } catch(Exception e) {}
> > >
> > > myLog.addAppender(appender);
> > > myLog.setLevel((Level) Level.INFO);
> > >
> > > myLog.info("Test Log");
> > >
> > > But thanks very much for the quick answer.
> > >
> > > >>> [EMAIL PROTECTED] 29/03/2006 16:06 >>>
> > > If you can set the desired log name as a system property then it
> > should
> > > work.
> > >
> > > On 3/29/06, Silvana Lima <[EMAIL PROTECTED]> wrote:
> > > > Hello to all,
> > > >
> > > > I am in a project using BEA - Workshop Integration in a
Windows
> > > plataform.
> > > > I am trying to figure out if it is possible to create a log
file
> > > dynamically just when a java processe starts with the Process ID
> as
> > part
> > > of the name of the log file.
> > > >
> > > > In the configuration file for Log4J it is used this
> configuration
> > > >
> > > > <appender name="APPLOGFILE"
> > > class="org.apache.log4j.RollingFileAppender">
> > > > <param name="File" value="workshop.log" />
> > > > <param name="Append" value="true" />
> > > > <param name="MaxFileSize" value="3000KB" />
> > > > <layout class="org.apache.log4j.PatternLayout">
> > > > <param name="ConversionPattern" value="%d{DATE} %-5p
> > %-15c{1}:
> > > %m%n"/>
> > > > </layout>
> > > > </appender>
> > > >
> > > > <category name="wlw">
> > > > <priority value="info" />
> > > > <appender-ref ref="APPLOGFILE" />
> > > > </category>
> > > >
> > > > ************************
> > > > I created this
> > > >
> > > > <appender name="MYAPPLOGFILE"
> > > class="org.apache.log4j.RollingFileAppender">
> > > > <param name="File"
> > > value="processes.VantiveInsertAddressSync.log" />
> > > > <param name="Append" value="true" />
> > > > <param name="MaxFileSize" value="3000KB" />
> > > > <layout class="org.apache.log4j.PatternLayout">
> > > > <param name="ConversionPattern" value="%d{DATE} %-5p
> > %-15c{1}:
> > > %m%n"/>
> > > > </layout>
> > > > </appender>
> > > >
> > > > <category
> > >
> >
>
name="xxx.eai.processes.vantive.manterendereco.VantiveInsertAddressSync">
> > > > <priority value="info" />
> > > > <appender-ref ref="MYAPPLOGFILE" />
> > > > </category>
> > > >
> > > >
> > > > This works to log the VantiveInsertAddressSync process itself.
> But
> > > the client wants a different log for each instance of the
process.
> > > > Is there a way to do this with log4J API?
> > > >
> > > > Thanks for any help
> > > > Please reply to [EMAIL PROTECTED]
> > > >
> > > > Silvana.
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