servermanagerimpl.java

来自「java jdk 1.4的源码」· Java 代码 · 共 616 行 · 第 1/2 页

/*
 * @(#)ServerManagerImpl.java	1.45 03/01/23
 *
 * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package com.sun.corba.se.internal.Activation;

/**
 *
 * @version     1.3, 97/10/19
 * @author      Rohit Garg
 * @since       JDK1.2
 */

import java.lang.reflect.Constructor;

import java.util.HashMap;
import java.util.Iterator;
import java.util.ArrayList;
import java.util.NoSuchElementException;

import org.omg.CORBA.INTERNAL;
import org.omg.CORBA.OBJECT_NOT_EXIST;
import org.omg.CORBA.CompletionStatus;

import com.sun.corba.se.internal.core.*;
import com.sun.corba.se.internal.util.Utility;
import com.sun.corba.se.internal.orbutil.ORBConstants;
import com.sun.corba.se.internal.orbutil.ORBClassLoader;
import com.sun.corba.se.internal.POA.POAORB;
import com.sun.corba.se.internal.POA.BadServerIdHandler;
import com.sun.corba.se.internal.POA.ForwardException;
import com.sun.corba.se.ActivationIDL.EndPointInfo;
import com.sun.corba.se.ActivationIDL.IIOP_CLEAR_TEXT;
import com.sun.corba.se.ActivationIDL.ORBPortInfo;
import com.sun.corba.se.ActivationIDL.Repository;
import com.sun.corba.se.ActivationIDL.LocatorPackage.ServerLocation;
import com.sun.corba.se.ActivationIDL.LocatorPackage.ServerLocationPerORB;
import com.sun.corba.se.ActivationIDL.RepositoryPackage.ServerDef;
import com.sun.corba.se.ActivationIDL._ServerManagerImplBase;
import com.sun.corba.se.ActivationIDL.ServerAlreadyActive;
import com.sun.corba.se.ActivationIDL.ServerAlreadyInstalled;
import com.sun.corba.se.ActivationIDL.ServerAlreadyUninstalled;
import com.sun.corba.se.ActivationIDL.ServerNotRegistered;
import com.sun.corba.se.ActivationIDL.ORBAlreadyRegistered;
import com.sun.corba.se.ActivationIDL.ServerHeldDown;
import com.sun.corba.se.ActivationIDL.ServerNotActive;
import com.sun.corba.se.ActivationIDL.NoSuchEndPoint;
import com.sun.corba.se.ActivationIDL.InvalidORBid;
import com.sun.corba.se.ActivationIDL.Server;
import com.sun.corba.se.ActivationIDL.IIOP_CLEAR_TEXT;

import com.sun.corba.se.internal.ior.ObjectKeyFactory ;
import com.sun.corba.se.internal.ior.ObjectKey ;
import com.sun.corba.se.internal.ior.POAObjectKeyTemplate ;

public class ServerManagerImpl extends _ServerManagerImplBase
    implements BadServerIdHandler
{
    // Using HashMap, since synchronization should be done by the calling
    // routines
    HashMap serverTable;
    Repository repository;

    ServerGIOP sgiop;
    int initialPort;
    POAORB orb;
    String dbDirName;
    boolean debug = false ;
 
    private int serverStartupDelay;

    ServerManagerImpl(POAORB orb, ServerGIOP sgiop, Repository repository,
		      String dbDirName, boolean debug)
    {
        this.orb        = orb;
        this.sgiop      = sgiop;
	this.repository = repository;
	this.dbDirName = dbDirName;
	this.debug = debug ;

	initialPort = orb.getServerGIOP().getBootstrapEndpoint(0).getPort();
        serverTable = new HashMap(256);

        // The ServerStartupDelay is the delay added after the Server registers
        // end point information. This is to allow the server to completely
        // initialize after ORB is instantiated.
        serverStartupDelay = ORBConstants.DEFAULT_SERVER_STARTUP_DELAY;
        String  delay = System.getProperty( ORBConstants.SERVER_STARTUP_DELAY);
        if( delay != null ) {
            try {
                serverStartupDelay = Integer.parseInt( delay );
            } catch ( Exception e ) {
                // Just use the default 1000 milliseconds as the default
            }
        }


	BadServerIdHandler handler = null;
	if (orb.getBadServerIdHandlerClass() == null) {
	    handler = this;
	} else {
	    try {
		Class[] params =
		    new Class[] { org.omg.CORBA.ORB.class };
		java.lang.Object[] args = new java.lang.Object[]{orb};
                Class badServerIdHandlerClass
                    = ORBClassLoader.loadClass(orb.getBadServerIdHandlerClass());
                Constructor cons = badServerIdHandlerClass.getConstructor(params);
		handler = (BadServerIdHandler) cons.newInstance(args);
	    } catch (Exception e) {
		throw new org.omg.CORBA.INITIALIZE(
		    "Error while creating BadServerIdHandler: " + e.getMessage());
	    }
	}
        orb.setBadServerIdHandler(handler);

        ((com.sun.corba.se.internal.corba.ORB)orb).connect(this);
        ProcessMonitorThread.start( serverTable );
    }

    public void activate(int serverId)
        throws ServerAlreadyActive, ServerNotRegistered, ServerHeldDown
    {

        ServerLocation   location;
        ServerTableEntry entry;
        Integer key = new Integer(serverId);

	synchronized(serverTable) {
            entry = (ServerTableEntry) serverTable.get(key);
	}

        if (entry != null && entry.isActive()) {
	    if (debug)
		System.out.println( "ServerManagerImpl: activate for server Id " +
				    serverId + " failed because server is already active. " +
				    "entry = " + entry ) ;

            throw new ServerAlreadyActive( serverId );
	}

        // locate the server
        try {

	    // We call getEntry here so that state of the entry is
	    // checked for validity before we actually go and locate a server

	    entry = getEntry(serverId);

            if (debug)
                System.out.println( "ServerManagerImpl: locateServer called with " +
                                " serverId=" + serverId + " endpointType="
                                + IIOP_CLEAR_TEXT.value + " block=false" ) ;

	    location = locateServer(entry, IIOP_CLEAR_TEXT.value, false);

	    if (debug)
		System.out.println( "ServerManagerImpl: activate for server Id " +
				    serverId + " found location " +
				    location.hostname + " and activated it" ) ;
        } catch (NoSuchEndPoint ex) {
            if (debug)
                System.out.println( "ServerManagerImpl: activate for server Id " +
                                    " threw NoSuchEndpoint exception, which was ignored" );
	}
    }

    public void active(int serverId, Server server) throws ServerNotRegistered
    {
        ServerTableEntry entry;
        Integer key = new Integer(serverId);

        synchronized (serverTable) {
            entry = (ServerTableEntry) serverTable.get(key);

            if (entry == null) {
		if (debug)
		    System.out.println( "ServerManagerImpl: active for server Id " +
					serverId + " called, but no such server is registered." ) ;

                throw (new INTERNAL(MinorCodes.SERVER_NOT_EXPECTED_TO_REGISTER,
				    CompletionStatus.COMPLETED_NO));
            } else {
		if (debug)
		    System.out.println( "ServerManagerImpl: active for server Id " +
					serverId + " called.  This server is now active." ) ;

		entry.register(server);
	    }
        }
    }

    public void registerEndpoints( int serverId, String orbId,
	EndPointInfo [] endpointList ) throws NoSuchEndPoint, ServerNotRegistered,
	ORBAlreadyRegistered
    {
	// orbId is ignored for now
        ServerTableEntry entry;
        Integer key = new Integer(serverId);

        synchronized (serverTable) {
            entry = (ServerTableEntry) serverTable.get(key);

            if (entry == null) {
		if (debug)
		    System.out.println(
			"ServerManagerImpl: registerEndpoint for server Id " +
			serverId + " called, but no such server is registered." ) ;

                throw (new INTERNAL(MinorCodes.SERVER_NOT_EXPECTED_TO_REGISTER,
				    CompletionStatus.COMPLETED_NO));
            } else {
		if (debug)
		    System.out.println(
			"ServerManagerImpl: registerEndpoints for server Id " +
			serverId + " called.  This server is now active." ) ;

		entry.registerPorts( orbId, endpointList );
               
	    }
	}
    }

    // XXX should look at the state of the server as well
    public int[] getActiveServers()
    {
	ServerTableEntry entry;
        int[] list = null;

        synchronized (serverTable) {
	    // unlike vectors, list is not synchronized

	    ArrayList servers = new ArrayList(0);

	    Iterator serverList = serverTable.keySet().iterator();

	    try {
	        while (serverList.hasNext()) {
	            Integer key = (Integer) serverList.next();
	            // get an entry
	            entry = (ServerTableEntry) serverTable.get(key);

		    if (entry.isValid() && entry.isActive()) {
		        servers.add(entry);
	            }
	        }
	    } catch (NoSuchElementException e) {
	        // all done
	    }

	    // collect the active entries
	    list = new int[servers.size()];
	    for (int i = 0; i < servers.size(); i++) {
	        entry = (ServerTableEntry) servers.get(i);
		list[i] = entry.getServerId();
	    }
        }

	if (debug) {
	    StringBuffer sb = new StringBuffer() ;
	    for (int ctr=0; ctr<list.length; ctr++) {
		sb.append( ' ' ) ;
		sb.append( list[ctr] ) ;
	    }

	    System.out.println( "ServerManagerImpl: getActiveServers returns" +
				sb.toString() ) ;
	}

        return list;
    }

    public void shutdown(int serverId) throws ServerNotActive
    {
        ServerTableEntry entry;
        Integer key = new Integer(serverId);

	synchronized(serverTable) {
            entry = (ServerTableEntry) serverTable.remove(key);

            if (entry == null) {
	        if (debug)
		    System.out.println( "ServerManagerImpl: shutdown for server Id " +
				    serverId + " throws ServerNotActive." ) ;

	        throw new ServerNotActive( serverId );
	    }

            try {
                entry.destroy();

	        if (debug)
		    System.out.println( "ServerManagerImpl: shutdown for server Id " +
				    serverId + " completed." ) ;
            } catch (Exception e) {
	        if (debug)
		    System.out.println( "ServerManagerImpl: shutdown for server Id " +
				    serverId + " threw exception " + e ) ;
	    }
	}
    }

    private ServerTableEntry getEntry( int serverId )
	throws ServerNotRegistered
    {