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Shut down button?

 
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Hi to all,


I am currently doing on a project based on Spring and using Tomcat as the web server.

Was wondering if any of you guys have suggestion on how i can "lock" up the system by a click of a button, preventing any traffic from entering the server, on this period of time..

I thought that would be achievable using Tomcat and did some research online.. but, couldn't really get any source of information so far..

So, if you have any suggestion, kindly shed some light..

Thanks alot in advance..


Regards,
Aaron
 
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Since you are using Spring, you could probably write an Interceptor which checks if the system is ready to serve requests or not. You can also use a normal http filter to achieve the same.
 
Aaron Ting
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Vivek Kr Singh wrote:Since you are using Spring, you could probably write an Interceptor which checks if the system is ready to serve requests or not. You can also use a normal http filter to achieve the same.



Greetings Vivek,


Thanks for the prompt reply..

Besides the mentioned two ways, have you got any idea on how to do so using tomcat?
 
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Are you looking for application stop/start capabilities? That was a feature of the admin app, but should also be possible using Tomcat's JMX interface.
 
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The Tomcat Manager web app can be used to start/stop individual web apps; its URL is usually something like http://localhost:8080/manager/html/list
 
Tim Holloway
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Ulf Dittmer wrote:The Tomcat Manager web app can be used to start/stop individual web apps; its URL is usually something like http://localhost:8080/manager/html/list



Providing it's installed, of course. It's no longer provided as part of the core Tomcat download.
 
Aaron Ting
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Thanks to all for the prompt replies..

The suggestions listed out so far have been really constructive..

However, I was actually looking into adding the functionality(shut down function) on my web application itself..

So, please kindly fill me in if there is any other suggestion in this area..
 
Ulf Dittmer
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Providing it's installed, of course. It's no longer provided as part of the core Tomcat download.


I think it's the Admin web app that's no longer provided; the Manager web app is still there.
 
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Dear Aaron,

Here is some code to programmatically stop and start the Tomcat HTTP connectors. Not sure how you would restart it from a servlet after you shut down the HTTP connector, but I'll leave that riddle for you to resolve.

http://java-monitor.com/forum/showthread.php?t=169

Hope this helps.

Kees Jan
 
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Consider the use of the javax.servlet.UnavailableException

Bill
 
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