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RE: [Wrapper-user] Wrapper notification...
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From: Sal I. <sal...@sy...> - 2003-11-06 02:04:01
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thanks for the clarification.
i believe leif already pushes all the service hooks through wrapper
org.tanukisoftware.wrapper.WrapperListener, meaning you can do this without
waiting for the wrapper to support it.
however i can totally see a future version of the wrapper that would execute
java code/scripts in function of events.
so now i'd like to reverse my initial position!
i think it would be great for the wrapper to be able to execute something in
function of a the service events.
for example:
wrapper.on-event.start.execute.1=com.mycompany.NotifyStart
wrapper.on-event.start.execute.2=notifyStart.pl
wrapper.on-event.restart.execute.1=com.mycompany.NotifyReStart
wrapper.on-event.restart.execute.2=notifyReStart.pl
wrapper.on-event.stop.execute.1=com.mycompany.NotifyStop
wrapper.on-event.stop.execute.2=notifyStop.pl
in the first case, the wrapper would execute the given class inline with the
same classpath setup in wrapper.conf.
in the second case, it would execute "start notifyStart.pl"
and similarly for all other events.
there is an additional problem with this:
wrapper.on-event.start.execute.1=com.mycompany.NotifyStart
once you start developing, you'll end up with one class for each event
because the wrapper would just invoke main () on these classes.
it would be preferable to support only 1 class that implements a
WrapperListener type interface which the wrapper could then call for all
events.
then to avoid jvm/jdk incompatibilities, the wrapper would have to use
reflection to invoke the methods.
this would make it a little tougher on the wrapper, but a lot easier on java
programmers using the wrapper.
so the above now becomes
wrapper.on-event.*.execute.1=com.mycompany.WrapperListener
wrapper.on-event.start.execute.2=notifyStart.pl
wrapper.on-event.restart.execute.1=notifyReStart.pl
wrapper.on-event.stop.execute.2=notifyStop.pl
which is the same as what the wrapper already supports through
org.tanukisoftware.wrapper.WrapperListener.
so all it needs to some on-event way of executing specific shellable
programs.
i'll shut up now & see what others have to say...
btw, can the pl programs be fully executed with the Win32 ShellExecute () as
in ShellExecute ("notifyStart.pl") or do you also need to pass the perl
interpreter's path?
-----Original Message-----
From: wra...@li...
[mailto:wra...@li...]On Behalf Of Luis
Guzman
Sent: Wednesday, November 05, 2003 2:40 PM
To: wra...@li...
Subject: RE: [Wrapper-user] Wrapper notification...
Sal,
Yes I am aware of the windows option as in stated in my original
message. I just needed confirmation that when the wrapper shutdown that
it isn't a clean service shutdown and will invoke the recovery on the
services.
How I see it is that the wrapper current features and functionality
aren't just aiming at running java as a service. It has evolved to be a
very strong tool for service availability with the ping timeouts, cpu
timeout, and filter action. Those are all monitoring ability of the
wrapper.
Now the question about sending email can be rephrased. Instead of an
email, the ability to execute something on shutdown would leave the door
open for everyone to create their own custom tools around the event.
Again, my reason for asking is mainly because on some machines we are
running 5 different services. Now multiply that 60 machines, that's 300
services that I would need to modify. And our dynamics could change 3
of those services to different configuration for different databases.
So, I hope you can understand where I'm heading with these figures.
Regards,
Luis
-----Original Message-----
From: Sal Ingrilli [mailto:sal...@sy...]
Sent: Wednesday, November 05, 2003 5:03 PM
To: wra...@li...
Subject: RE: [Wrapper-user] Wrapper notification...
i think your request is useful.
however i am against it because your adding non-wrapper functionality to
the wrapper. additionally you're adding complexity to the development of
the wrapper.
here are same alternatives
1. use log4j notifications (email and windows event log are supported)
2. use windows service recovery options to run a script if a service
fails...
windows service recovery: go to administrative tools | services |
right-click on your service | recovery
-----Original Message-----
From: wra...@li...
[mailto:wra...@li...]On Behalf Of Luis
Guzman
Sent: Wednesday, November 05, 2003 10:41 AM
To: wra...@li...
Subject: [Wrapper-user] Wrapper notification...
Hi leif,
I was looking into the wrapper.filter.action and was wondering how
difficult it would be to implement an email notification option? My
reason for asking, is that it would be easier to manage the set of
wrapper configuration files than it is to manage each service properties
to run a script. Which on a second note, does the wrapper.filter.action
shutdown and restart options report to windows as a failure so then I
could write a perl script that can send out this email notification
using the service recovery option to run a file.
Thanks.
Luis
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