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package dk.thoerup.traininfoservice; |
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import java.util.logging.Logger; |
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import javax.servlet.ServletContextEvent; |
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import javax.servlet.ServletContextListener; |
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import dk.thoerup.circuitbreaker.AccountingCircuitBreaker; |
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import dk.thoerup.circuitbreaker.CircuitBreakerManager; |
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import dk.thoerup.circuitbreaker.jmx.JMXWrapper; |
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import dk.thoerup.circuitbreaker.notification.JavaLogNotifier; |
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/** |
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* Application Lifecycle Listener implementation class JmxListener |
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* |
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*/ |
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public class CircuitBreakerListener implements ServletContextListener { |
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Logger logger = Logger.getLogger(CircuitBreakerListener.class.getName()); |
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public CircuitBreakerListener() { |
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} |
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/** |
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* @see ServletContextListener#contextInitialized(ServletContextEvent) |
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*/ |
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public void contextInitialized(ServletContextEvent sce) { |
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logger.warning("Context Init"); |
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int threshold = Integer.parseInt(sce.getServletContext().getInitParameter("banedk_threshold") ); |
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int timeout = Integer.parseInt( sce.getServletContext().getInitParameter("banedk_timeout") ); |
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CircuitBreakerManager mgr = CircuitBreakerManager.getManager(); |
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AccountingCircuitBreaker banedk = new AccountingCircuitBreaker("banedk", threshold, timeout); |
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banedk.setNotifier( new JavaLogNotifier() ); |
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mgr.addCircuitBreaker( banedk ); |
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JMXWrapper.registerAllCircuitBreakers(); |
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} |
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/** |
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* @see ServletContextListener#contextDestroyed(ServletContextEvent) |
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*/ |
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public void contextDestroyed(ServletContextEvent sce) { |
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logger.warning("Context Destroyed"); |
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CircuitBreakerManager.getManager().removeCircuitBreaker("banedk"); |
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JMXWrapper.unregisterAllCircuitBreakers(); |
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} |
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} |