JMSContextManager.java

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package org.glassfish.jms.injection;

import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.enterprise.context.RequestScoped;
import javax.jms.ConnectionFactory;
import javax.jms.JMSContext;
import com.sun.enterprise.util.LocalStringManagerImpl;
import com.sun.logging.LogDomains;

/**
 * This bean has a map to store JMSContext instances based on the injection
 * point, that makes sure in one class, the injected JMSContext beans of
 * different injection point will not share the same request scoped JMSContext
 * instance in a request.
 */
@RequestScoped
public class JMSContextManager implements Serializable {
    private final static Logger logger = LogDomains.getLogger(JMSContextManager.class, LogDomains.JMS_LOGGER);
    private final static LocalStringManagerImpl localStrings = new LocalStringManagerImpl(JMSContextManager.class);

    private final Map<String, JMSContext> contexts;

    public JMSContextManager() {
        contexts = new HashMap<String, JMSContext>();
    }

    public JMSContext getContext(String id, JMSContextMetadata metadata, ConnectionFactory connectionFactory) {
        JMSContext context = contexts.get(id);
        if (context == null) {
            int sessionMode = metadata.getSessionMode();
            String userName = metadata.getUserName();
            if (userName == null) {
                context = connectionFactory.createContext(sessionMode);
            } else {
                String password = metadata.getPassword();
                context = connectionFactory.createContext(userName, password, sessionMode);
            }
            logger.log(Level.FINE, localStrings.getLocalString("JMSContext.impl.create", 
                                   "Created new JMSContext instance associated with id {0}: {1}.", 
                                   id, context.toString()));
            contexts.put(id, context);
        }
        return context;
    }

    JMSContext getContext(String id) {
        return contexts.get(id);
    }

   // Close and remove the JMSContext instances
   @PreDestroy
   public void cleanup() {
       for (Entry<String, JMSContext> entry : contexts.entrySet()) {
           String id = entry.getKey();
           JMSContext context = entry.getValue();
           try {
               context.close();
               logger.log(Level.FINE, localStrings.getLocalString("JMSContext.impl.close", 
                                      "Closed JMSContext instance associated with id {0}: {1}.", 
                                      id, context.toString()));
           } catch (Exception e) {
               logger.log(Level.SEVERE, localStrings.getLocalString("JMSContext.impl.close.failure", 
                                        "Failed to close JMSContext instance associated with id {0}: {1}.", 
                                        id, context.toString()), e);
           }
       }
       contexts.clear();
   }
}