Package com.sun.enterprise.web

Source Code of com.sun.enterprise.web.ConnectionShutdownUtil

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/*
* ConnectionShutdownUtil.java
*
* Created on February 27, 2003, 4:45 PM
*/

package com.sun.enterprise.web;

import java.util.logging.*;
import com.sun.logging.*;
import java.util.Hashtable;
import java.util.Enumeration;
import java.util.ArrayList;
import org.apache.catalina.Context;
import org.apache.catalina.Container;
import org.apache.catalina.Engine;
import org.apache.catalina.Manager;
import org.apache.catalina.Valve;
import org.apache.catalina.core.ContainerBase;
import java.sql.Connection;

import com.sun.enterprise.resource.ResourceSpec;
import com.sun.enterprise.Switch;

/**
*
* @author  lwhite
*/
public class ConnectionShutdownUtil {
   
    /**
     * The embedded Catalina object.
     */
    protected final EmbeddedWebContainer _embedded;
    private static final Logger _logger;
    private WebContainer webContainer = null;
    static
    {
            _logger=LogDomains.getLogger(LogDomains.WEB_LOGGER);
    }    
   
    /** Creates a new instance of ConnectionShutdownUtil */
    public ConnectionShutdownUtil() {
        _embedded= null;
    }
   
    /** Creates a new instance of ConnectionShutdownUtil */
    /*
    public ConnectionShutdownUtil(Hashtable instances)  {
        _instances = instances;
    }
     */
   
    /** Creates a new instance of ConnectionShutdownUtil */
    public ConnectionShutdownUtil(EmbeddedWebContainer embedded)  {
        _embedded = embedded;
    }    
   
    public String getApplicationId(Context ctx) {
        com.sun.enterprise.web.WebModule wm =
            (com.sun.enterprise.web.WebModule)ctx;
        return wm.getID();
    }
    
    public String getApplicationName(Context ctx) {
        return ctx.getName();
    }     
       
    public ArrayList runGetShutdownCapables() {
        _logger.finest("IN ConnectionShutdownUtil:runGetShutdownCapables");
        //System.out.println("IN ConnectionShutdownUtil:runGetShutdownCapables");
        //each element of this list will contain
        //a list of connections
        ArrayList shutdownCapablesList = new ArrayList();

        try {
            Engine[] engines = _embedded.getEngines();
           
            for(int h=0; h<engines.length; h++) {
                Container engine = (Container) engines[h];           
                Container[] hosts = engine.findChildren();
                for(int i=0; i<hosts.length; i++) {
                    Container nextHost = hosts[i];
                    Container [] webModules = nextHost.findChildren();
                    for (int j=0; j<webModules.length; j++) {
                        Container nextWebModule = webModules[j];
                        Context ctx = (Context)nextWebModule;
                        //this code gets managers
                        String webAppName = this.getApplicationId(ctx);
                        Manager nextManager = nextWebModule.getManager();
                        if(nextManager instanceof ShutdownCleanupCapable) {
                            _logger.finest("found a shutdown capable manager:" + nextManager.getClass().getName());
                            //System.out.println("found a shutdown capable manager:" + nextManager.getClass().getName());
                            shutdownCapablesList.add(nextManager);
                        }
                    }
                    _logger.finest("1) shutdownCapablesList Size = " + shutdownCapablesList.size());
                    //System.out.println("1) shutdownCapablesList Size = " + shutdownCapablesList.size());                  
                    //now get any shutdown capable valves installed in virtual hosts
                    Valve[] valves = ((ContainerBase)nextHost).getValves();                   
                    for(int k=0; k<valves.length; k++) {
                        Valve nextValve = valves[k];
                        _logger.finest("VALVE = " + nextValve.getClass().getName());
                        //System.out.println("VALVE = " + nextValve.getClass().getName());                        
                        if(nextValve instanceof ShutdownCleanupCapable) {
                            _logger.finest("found a shutdown capable valve");
                            //System.out.println("found a shutdown capable valve");
                            shutdownCapablesList.add(nextValve);
                        }                      
                    }
                }                
            }
        } catch (Throwable th) {
            _logger.log(Level.SEVERE, "Exception thrown", th);
        }
        _logger.finest("1) shutdownCapablesList Size = " + shutdownCapablesList.size());
        //System.out.println("1) shutdownCapablesList Size = " + shutdownCapablesList.size());        
        return shutdownCapablesList;
               
    }
   
    public ArrayList runGetShutdownCapablesForAppName(String appName) {
        //FIXME this is not returning valves
        _logger.finest("IN ConnectionShutdownUtil:runGetShutdownCapablesForAppName");
        //System.out.println("IN ConnectionShutdownUtil:runGetShutdownCapablesForAppName");
        //each element of this list will contain
        //a list of connections
        ArrayList shutdownCapablesList = new ArrayList();
        try {
            Engine[] engines = _embedded.getEngines();
           
            for(int h=0; h<engines.length; h++) {
                Container engine = (Container) engines[h];            
                Container[] hosts = engine.findChildren();
                for(int i=0; i<hosts.length; i++) {
                    Container nextHost = hosts[i];
                    Container [] webModules = nextHost.findChildren();
                    for (int j=0; j<webModules.length; j++) {
                        Container nextWebModule = webModules[j];
                        Context ctx = (Context)nextWebModule;
                        String webAppName = this.getApplicationName(ctx);
                        //this code gets managers
                        //String webAppName = this.getApplicationId(ctx);
                        Manager nextManager = nextWebModule.getManager();
                        if(nextManager instanceof ShutdownCleanupCapable) {
                            if(webAppName.equals(appName)) {
                                _logger.finest("found a shutdown capable manager:" + nextManager.getClass().getName());
                                //System.out.println("found a shutdown capable manager:" + nextManager.getClass().getName());
                                shutdownCapablesList.add(nextManager);
                            }
                        }
                    }
                    //System.out.println("1) shutdownCapablesList Size = " + shutdownCapablesList.size());                  

                }                
            }
        } catch (Throwable th) {
            _logger.log(Level.SEVERE, "Exception thrown", th);
        }
        _logger.finest("1) shutdownCapablesList Size = " + shutdownCapablesList.size());
        //System.out.println("1) shutdownCapablesList Size = " + shutdownCapablesList.size());        
        return shutdownCapablesList;
               
    }   
   
    public void runShutdownCleanupFromShutdownCleanupCapableList(ArrayList shutdownCapablesList) {
        for(int i=0; i<shutdownCapablesList.size(); i++) {
            ShutdownCleanupCapable nextOne = (ShutdownCleanupCapable)shutdownCapablesList.get(i);
            nextOne.doShutdownCleanup();
        }
    }
   
    public void runCloseAllConnections() {
        ArrayList list = this.runGetShutdownCapables();
        this.runShutdownCleanupFromShutdownCleanupCapableList(list);
    }
   
    public void runCloseCachedConnectionForApp(String appName) {
        ArrayList list = this.runGetShutdownCapablesForAppName(appName);
        this.runCloseCachedConnectionFromShutdownCleanupCapableList(list, appName);
    }
   
    public void runCloseCachedConnectionFromShutdownCleanupCapableList(ArrayList shutdownCapablesList, String appName) {
        for(int i=0; i<shutdownCapablesList.size(); i++) {
            ShutdownCleanupCapable nextOne = (ShutdownCleanupCapable)shutdownCapablesList.get(i);
            nextOne.doCloseCachedConnection();
        }
    }   

    public void clearoutJDBCPool() {
        //this will clear out the HADB connection pool
        String hadbPoolname = this.getHadbJdbcConnectionPoolNameFromConfig();
        if(hadbPoolname == null) {
            return;
        }
        ResourceSpec resourceSpec = new ResourceSpec(hadbPoolname,
            ResourceSpec.JNDI_NAME);
        resourceSpec.setConnectionPoolName(hadbPoolname);
        if(resourceSpec == null) {
            return;
        }
        Switch.getSwitch().getPoolManager().emptyResourcePool(resourceSpec);
        resourceSpec = new ResourceSpec(hadbPoolname, ResourceSpec.JDBC_URL);
        resourceSpec.setConnectionPoolName(hadbPoolname);
        if(resourceSpec == null) {
            return;
        }       
        Switch.getSwitch().getPoolManager().emptyResourcePool(resourceSpec);
    }
   
    private String getHadbJdbcConnectionPoolNameFromConfig() {
        ServerConfigLookup configLookup = new ServerConfigLookup();
        return configLookup.getHadbJdbcConnectionPoolNameFromConfig();
    }    
   
}

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