?
Solved

Graceful shutdown of Axis web service?

Posted on 2004-08-03
8
Medium Priority
?
543 Views
Last Modified: 2012-05-05
I have a web service deployed using Axis in JBOSS 3.2.1.  The service uses a class, SocketConnection, which has a static reference to a socket which always remains open.   I need to gracefully close this socket if the JBOSS server is brought down.  I tried adding a finalize method to the SocketConnection class but it isn't getting invoked.  Does anyone know how I can accomplish this?  Again, I have the classes deployed using Axis as defined in the wsdd file.
0
Comment
Question by:wmiddle
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
8 Comments
 
LVL 1

Expert Comment

by:wolfc
ID: 11709967
Why close gracefully?

I have a SOAP service deployed using WSDP instead of Axis. If JBoss is shutting down something serious is going on, so it may go down in flames as far as I care.
0
 

Author Comment

by:wmiddle
ID: 11710002
Actually the shutdown will be intentional
0
 
LVL 14

Expert Comment

by:sudhakar_koundinya
ID: 11710269
In a thread try to connect to the JBoss service. If it is not connected by thread then code your logic to shutdown ur service. Instead of checking wither JBoss service is existing or not at certain time intervals check for this. So it will not given burden to ur service aswell ur server.

Regards
Sudhakar
0
What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

 
LVL 92

Expert Comment

by:objects
ID: 11710465
> Actually the shutdown will be intentional

The close the socket when the shutdown is initiated.
0
 

Author Comment

by:wmiddle
ID: 11710971
>> In a thread try to connect to the JBoss service. If it is not connected by thread then code your logic to shutdown ur service

By the time the JBoss service is shut down I won't be able to shutdown my service.  The JVM will have exited by then

>> The close the socket when the shutdown is initiated
The shutdown is not initiated by the application.  it is someone hitting ctrl-C in the Jboss window

Aren't there any hooks into the shutdown sequence similar to a finalize method?  

Worst case scenario is I can provide a web method to shut down the socket connection and write a page or app that the operator would need to use before bringing down Jboss.  This wouldn't help with an unexpected or unplanned shutdown of Jboss.
0
 
LVL 92

Accepted Solution

by:
objects earned 2000 total points
ID: 11710997
> it is someone hitting ctrl-C in the Jboss window

trap ctrl-c and do the shutdown

> Aren't there any hooks into the shutdown sequence similar to a finalize method?

Runtime.addShutdownHook()
0
 

Author Comment

by:wmiddle
ID: 11711360
// In constructor of SocketConnection
SocketCloser closer = new SocketCloser(this);
Thread closerThread = new Thread(closer);
Runtime.getRuntime().addShutdownHook(closerThread);

// SocketCloser class
public class SocketCloser implements Runnable
{
      SocketConnection connection = null;

  public SocketCloser(SocketConnection connection)
  {
      super();
      this.connection = connection;
  }
  public void run()
  {
      connection.shutDown();      
  }
}
0
 
LVL 92

Expert Comment

by:objects
ID: 11711543
glad i could help :-)

http://www.objects.com.au/staff/mick
0

Featured Post

Want to be a Web Developer? Get Certified Today!

Enroll in the Certified Web Development Professional course package to learn HTML, Javascript, and PHP. Build a solid foundation to work toward your dream job!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

By the end of 1980s, object oriented programming using languages like C++, Simula69 and ObjectPascal gained momentum. It looked like programmers finally found the perfect language. C++ successfully combined the object oriented principles of Simula w…
Go is an acronym of golang, is a programming language developed Google in 2007. Go is a new language that is mostly in the C family, with significant input from Pascal/Modula/Oberon family. Hence Go arisen as low-level language with fast compilation…
Viewers will learn one way to get user input in Java. Introduce the Scanner object: Declare the variable that stores the user input: An example prompting the user for input: Methods you need to invoke in order to properly get  user input:
The viewer will learn how to implement Singleton Design Pattern in Java.
Suggested Courses
Course of the Month9 days, 15 hours left to enroll

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question