Re: [Wrapper-user] Using the wrapper for notification

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Hi Jeff, 
 
I've found that wrapper restarts frequently happen when the app is in
some kind of a bad state that leads to failure to respond to the
wrapper ping.  In this state I wouldn't trust an email notification to
actually get out, so would suggest one of two approaches: 
<ol>
 <li>Send the email from the application after it restarts, or</li>
 <li>Send the email from the native wrapper code, i.e. the wrapper's
monitor, by modifying that code to do so (not sure if there is some
hook there already that could be used)</li>
</ol>
Chuck 
 
 
Jeff Greif wrote on 09/24/2007 07:49 PM:
<blockquote cite="mid...@we..." type="cite">
 <pre wrap="">For production apps running on servers, it would be useful to associate 
wrapper actions (such as restart) with some kind of notification, e.g. 
an email to an administrator.

Until I noticed that the wrapper does not use some full-featured logging 
package like log4j, I thought perhaps I could add a log4j SmtpAppender 
and triggering-event filter to do this.

As the simplified logging facilities in the wrapper are not really aimed 
at this kind of use, the next idea was to do this email logging in the 
application, probably by replacing the WrapperSimpleApp class currently 
being used with a similar one which does the logging from the 
WrapperListener methods.  This main reason for using SmtpAppender to 
take care of the email is to minimize the code alteration requirements 
in the app, which already contains facilities for emailing, but might 
not be able to execute them if badly enough in need of restart.

Are there other suggestions?

Jeff

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