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// This Source Code is in the Public Domain per: http://unlicense.org |
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package org.litesoft.GWT.eventbus.server.nonpublic; |
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import org.litesoft.GWT.eventbus.client.*; |
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import org.litesoft.GWT.eventbus.client.nonpublic.*; |
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import org.litesoft.GWT.eventbus.server.*; |
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import org.litesoft.commonfoundation.typeutils.Objects; |
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import org.litesoft.logger.*; |
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import org.litesoft.sequences.*; |
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import javax.servlet.http.*; |
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import java.util.*; |
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public class ServerEventBusManager implements ServerEventBusBroadcaster { |
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private static final Logger LOGGER = LoggerFactory.getLogger( ServerEventBusManager.class ); |
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public static final ServerEventBusManager INSTANCE = new ServerEventBusManager(); |
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private ServerEventBusManager() { |
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} |
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private static final String SERVER_EVENT_BUSES = "ServerEventBuses"; |
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private static final Long MAX_CLIENT_ID = (long) (Integer.MAX_VALUE - 2000); |
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private static SequenceSource sClientIdNumberSequenceSource = SequenceSource.NULL; |
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public static synchronized void setClientIdNumberSequenceSource( SequenceSource pSequenceSource ) { |
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sClientIdNumberSequenceSource = (pSequenceSource != null) ? pSequenceSource : SequenceSource.NULL; |
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} |
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public static synchronized int getNextClientIdNumber() { |
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long cid = sClientIdNumberSequenceSource.getNextSequenceNumber( SERVER_EVENT_BUSES, MAX_CLIENT_ID ); |
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return (int) cid; |
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} |
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private final NodeMap mNodes = new NodeMap(); |
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public EventPackage getPackageForNewServerEventBus( int pClientIdNumber ) { |
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return null; |
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} |
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public TemporaryServerEventBus createTemporaryServerEventBus( String pWhy, ServerEventBus pParent, |
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ClientWindowInstanceDataManager pInitialClientWindowInstanceData ) { |
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int zClientIdNumber = getNextClientIdNumber(); |
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TemporaryServerEventBus zTempSEB = new TemporaryServerEventBus( zClientIdNumber ); |
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synchronized ( mNodes ) { |
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zTempSEB.initialize( pWhy, pParent.getClientIdNumber(), pInitialClientWindowInstanceData ); |
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} |
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// Force use of same stuff |
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ServerEventBusSessionMapper.addServerEventBus( pParent, zTempSEB ); |
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return zTempSEB; |
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} |
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public TemporaryServerEventBus createTemporaryServerEventBus( String pWhy, HttpServletRequest pRequest, |
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ThreadLocalContextFactory pThreadLocalContextFactory, |
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ClientWindowInstanceDataManager pInitialClientWindowInstanceData ) { |
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int zClientIdNumber = getNextClientIdNumber(); |
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TemporaryServerEventBus zTempSEB = new TemporaryServerEventBus( zClientIdNumber ); |
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synchronized ( mNodes ) { |
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zTempSEB.initialize( pWhy, null, pInitialClientWindowInstanceData ); |
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} |
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ServerEventBusSessionMapper.addServerEventBus( pRequest, pThreadLocalContextFactory, zTempSEB ); |
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return zTempSEB; |
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} |
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/** |
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* @return may return null |
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*/ |
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public Integer getParentClientID( int pClientIdNumber ) { |
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return mNodes.getNode( pClientIdNumber ).getParentClientID(); |
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} |
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/** |
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* @return may return null |
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*/ |
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public ServerEventBus getServerEventBus( int pClientIdNumber ) { |
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return mNodes.getServerEventBusOrDisposedZombie( pClientIdNumber ); |
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} |
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/** |
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* @return may return null |
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*/ |
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public ServerEventBus getRootServerEventBus( int pClientIdNumber ) { |
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return mNodes.getRootNode( pClientIdNumber ).getServerEventBus(); |
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} |
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/** |
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* @return may return null |
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*/ |
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public ServerEventBus getParentServerEventBus( int pClientIdNumber ) { |
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return mNodes.getParentNode( pClientIdNumber ).getServerEventBus(); |
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} |
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/** |
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* @return may return an empty array, but never null |
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*/ |
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public ServerEventBus[] getAllServerEventBuses() { |
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return SelectorAll.INSTANCE.select( mNodes.getNodes() ); |
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} |
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/** |
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* @return may return an empty array, but never null |
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*/ |
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public ServerEventBus[] getChildrenServerEventBuses( int pClientIdNumber ) { |
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return new SelectorChildren( pClientIdNumber ).select( mNodes.getNodes() ); |
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} |
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/** |
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* @return may return an empty array, but never null |
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*/ |
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public ServerEventBus[] getAllRelatedServerEventBuses( int pClientIdNumber ) { |
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Node rootNode = mNodes.getRootNode( pClientIdNumber ); |
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return rootNode.isReal() ? // |
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new SelectorAllRelated().select( rootNode, mNodes.getNodes() ) : // |
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ServerEventBus.EMPTY_ARRAY; |
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} |
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public void broadcast( EventPackage pEventPackage ) { |
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if ( pEventPackage != null ) { |
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ServerEventBus[] buses = getAllServerEventBuses(); |
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if ( buses != null ) { |
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for ( ServerEventBus bus : buses ) { |
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if ( bus != null ) { |
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bus.publishIfNotDisposed( pEventPackage ); |
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} |
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} |
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} |
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} |
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} |
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public static class BackDoor { |
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public static ServerEventBus updateServerEventBus( ServerEventBus pNewSEB, Integer pParentClientID ) { |
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return ServerEventBusManager.INSTANCE.mNodes.updateServerEventBus( pNewSEB, pParentClientID ); |
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} |
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} |
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private static class Node { |
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private int mClientID; |
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private Integer mParentClientID; |
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private ServerEventBus mServerEventBus; |
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private int mChildCount = 0; |
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public Node( Integer pParentClientID, int pClientID, ServerEventBus pServerEventBus ) { |
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mParentClientID = pParentClientID; |
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mClientID = pClientID; |
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mServerEventBus = pServerEventBus; |
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} |
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public String toString() { |
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return "" + mClientID + ":" + ((getServerEventBus() != null) ? "SEB" : "---") + " ^" + |
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mParentClientID + " c:" + mChildCount; |
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} |
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public int getClientID() { |
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return mClientID; |
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} |
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public Integer getParentClientID() { |
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return mParentClientID; |
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} |
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public synchronized ServerEventBus getServerEventBus() { |
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return mServerEventBus; |
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} |
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public synchronized void replaceServerEventBus( ServerEventBus pServerEventBus ) { |
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mServerEventBus = pServerEventBus; |
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} |
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public synchronized ServerEventBus clearServerEventBus() { |
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ServerEventBus rv = mServerEventBus; |
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mServerEventBus = null; |
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return rv; |
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} |
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public synchronized boolean shouldRemove() { |
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return isReal() && (mServerEventBus == null) && (mChildCount < 1); |
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} |
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public synchronized void incChildCount() { |
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mChildCount++; |
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} |
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public synchronized void decChildCount() { |
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mChildCount--; |
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} |
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public boolean isReal() { |
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return true; |
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} |
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} |
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private static final Node NULL_NODE = new Node( null, 0, null ) { |
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public boolean isReal() { |
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return false; |
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} |
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public void incChildCount() { |
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} |
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public void decChildCount() { |
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} |
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}; |
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private abstract static class AbstractSelector { |
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public ServerEventBus[] select( Node[] pNodes ) { |
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List<ServerEventBus> buses = new ArrayList<ServerEventBus>(); |
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addAppropriate( buses, pNodes ); |
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return buses.toArray( new ServerEventBus[buses.size()] ); |
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} |
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protected void addAppropriate( List<ServerEventBus> pBuses, Node[] pNodes ) { |
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for ( Node node : pNodes ) { |
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ServerEventBus seb = node.getServerEventBus(); |
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if ( (seb != null) && acceptable( node, seb ) ) { |
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pBuses.add( seb ); |
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} |
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} |
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} |
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protected boolean acceptable( Node pNode, ServerEventBus pSEB ) { |
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return true; |
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} |
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} |
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private static class SelectorAll extends AbstractSelector { |
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public static final AbstractSelector INSTANCE = new SelectorAll(); |
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} |
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private static class SelectorChildren extends AbstractSelector { |
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private Integer mParentID; |
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public SelectorChildren( int pParentID ) { |
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mParentID = pParentID; |
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} |
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protected boolean acceptable( Node pNode, ServerEventBus pSEB ) { |
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return mParentID.equals( pNode.getParentClientID() ); |
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} |
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} |
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private static class SelectorAllRelated { |
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public ServerEventBus[] select( Node pRoot, Node[] pNodes ) { |
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List<ServerEventBus> buses = new ArrayList<ServerEventBus>(); |
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new Adder( buses, pNodes ).addAppropriate( pRoot ); |
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return buses.toArray( new ServerEventBus[buses.size()] ); |
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} |
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private static class Adder { |
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private List<ServerEventBus> mBuses; |
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private Node[] mNodes; |
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public Adder( List<ServerEventBus> pBuses, Node[] pNodes ) { |
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mBuses = pBuses; |
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mNodes = pNodes; |
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} |
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public void addAppropriate( Node pCurrent ) { |
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ServerEventBus seb = pCurrent.getServerEventBus(); |
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if ( seb != null ) { |
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mBuses.add( seb ); |
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} |
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Integer parentID = pCurrent.getClientID(); |
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for ( Node node : mNodes ) { |
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if ( parentID.equals( node.getParentClientID() ) ) { |
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addAppropriate( node ); |
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} |
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} |
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} |
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} |
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} |
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private static class NodeMap implements ServerEventBusDisposeListener { |
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private final Map<Integer, Node> mServerEventBusNodes = new HashMap<Integer, Node>(); |
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private final Set<Integer> mDisposedServerEventBuses = new HashSet<Integer>(); |
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public Node getNode( Integer pClientIdNumberFromParentReference ) { |
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return (pClientIdNumberFromParentReference == null) ? // |
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NULL_NODE : // |
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getNode( pClientIdNumberFromParentReference.intValue() ); |
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} |
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public Node getNode( int pClientIdNumber ) { |
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Node node = getRealNode( pClientIdNumber ); |
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return (node != null) ? node : NULL_NODE; |
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} |
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public Node getRequiredNode( int pClientIdNumber ) { |
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Node node = getRealNode( pClientIdNumber ); |
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if ( node == null ) { |
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throw new IllegalStateException( "No ServerEventBus Node for ClientID: " + pClientIdNumber ); |
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} |
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return node; |
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} |
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// from ServerEventBusDisposeListener |
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public void init( IServerEventBus pServerEventBus ) { |
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} |
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// from ServerEventBusDisposeListener |
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public void disposing( IServerEventBus pServerEventBus ) { |
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int clientId = pServerEventBus.getClientIdNumber(); |
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List<ServerEventBus> mAncestors = Collections.emptyList(); |
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ServerEventBus zExistingSEB; |
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synchronized ( this ) { |
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Node node = getNode( clientId ); |
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zExistingSEB = node.clearServerEventBus(); |
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if ( null != zExistingSEB ) { |
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mAncestors = getAncestors( node ); |
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mDisposedServerEventBuses.add( clientId ); |
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} |
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while ( node.shouldRemove() ) { |
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mServerEventBusNodes.remove( node.getClientID() ); |
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node = getNode( node.getParentClientID() ); |
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node.decChildCount(); |
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} |
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} |
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if ( zExistingSEB instanceof NonTemporaryServerEventBus ) { |
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LOGGER.debug.log( "---Disposed: ", zExistingSEB ); |
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} |
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notifyAncestorsOfRemovedDecendant( mAncestors, clientId ); |
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} |
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public synchronized ServerEventBus getServerEventBusOrDisposedZombie( int pClientIdNumber ) { |
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ServerEventBus zBus = getNode( pClientIdNumber ).getServerEventBus(); |
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if ( zBus != null ) { |
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return zBus; |
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} |
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return mDisposedServerEventBuses.contains( pClientIdNumber ) ? // |
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ZombieServerEventBus.INSTANCE : // |
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null; |
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} |
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public synchronized Node getRealNode( int pClientIdNumber ) { |
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return mServerEventBusNodes.get( pClientIdNumber ); |
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} |
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public synchronized Node[] getNodes() { |
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return mServerEventBusNodes.values().toArray( new Node[mServerEventBusNodes.size()] ); |
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} |
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public synchronized Node getParentNode( int pClientIdNumber ) { |
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Integer parentClientID = getNode( pClientIdNumber ).getParentClientID(); |
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return getNode( parentClientID ); |
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} |
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public synchronized Node getRootNode( int pClientIdNumber ) { |
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Node node = getNode( pClientIdNumber ); |
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for ( Integer parentClientID; null != (parentClientID = node.getParentClientID()); ) { |
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node = getNode( parentClientID ); |
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} |
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return node; |
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} |
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public ServerEventBus updateServerEventBus( ServerEventBus pNewSEB, Integer pParentClientID ) { |
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if ( !pNewSEB.getType().isManagable() ) { |
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throw badType( "Managable", pNewSEB ); |
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} |
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int clientId = pNewSEB.getClientIdNumber(); |
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ServerEventBus zExistingSEB = null; |
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List<ServerEventBus> mAncestors = Collections.emptyList(); |
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synchronized ( this ) { |
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Node node = getRealNode( clientId ); |
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if ( node != null ) { |
383 |
|
- |
zExistingSEB = node.getServerEventBus(); |
384 |
|
- |
if ( zExistingSEB != null ) { |
385 |
|
- |
mAncestors = getAncestors( node ); |
386 |
|
- |
|
387 |
|
- |
// Since we are replacing we do NOT want to get the dispose notice on the old! |
388 |
|
- |
zExistingSEB.removeListener( this ); |
389 |
|
- |
|
390 |
|
- |
if ( !pNewSEB.getType().isUpdateReplacable() ) { |
391 |
|
- |
throw badType( "UpdateReplacable", pNewSEB ); |
392 |
|
- |
} |
393 |
|
- |
} |
394 |
|
- |
node.replaceServerEventBus( pNewSEB ); |
395 |
|
- |
if ( !Objects.areNonArraysEqual( pParentClientID, node.getParentClientID() ) ) { |
396 |
|
- |
throw new IllegalStateException( "Mismatched Parent Client IDs (" + |
397 |
|
- |
node.getParentClientID() + ":Existing - New:" + |
398 |
|
- |
pParentClientID + ") for Client ID: " + clientId ); |
399 |
|
- |
} |
400 |
|
- |
} else { |
401 |
|
- |
mServerEventBusNodes.put( clientId, new Node( pParentClientID, clientId, pNewSEB ) ); |
402 |
|
- |
if ( pParentClientID != null ) { |
403 |
|
- |
getNode( pParentClientID ).incChildCount(); |
404 |
|
- |
} |
405 |
|
- |
} |
406 |
|
- |
} |
407 |
|
- |
if ( pNewSEB instanceof NonTemporaryServerEventBus ) { |
408 |
|
- |
LOGGER.debug.log( "---Alive---: ", pNewSEB ); |
409 |
|
- |
} |
410 |
|
- |
pNewSEB.addListener( this ); |
411 |
|
- |
notifyAncestorsOfAddedDecendant( mAncestors, clientId ); |
412 |
|
- |
return zExistingSEB; |
413 |
|
- |
} |
414 |
|
- |
|
415 |
|
- |
private IllegalStateException badType( String pWhy, ServerEventBus pNewSEB ) { |
416 |
|
- |
return new IllegalStateException( "Not " + pWhy + ": " + pNewSEB.getType() + " ServerEventBus!" ); |
417 |
|
- |
} |
418 |
|
- |
|
419 |
|
- |
/** |
420 |
|
- |
* called under lock |
421 |
|
- |
*/ |
422 |
|
- |
private List<ServerEventBus> getAncestors( Node pNode ) { |
423 |
|
- |
List<ServerEventBus> zBuses = new ArrayList<ServerEventBus>(); |
424 |
|
- |
for ( Integer parentClientID; null != (parentClientID = pNode.getParentClientID()); ) { |
425 |
|
- |
pNode = getNode( parentClientID ); |
426 |
|
- |
ServerEventBus zBus = pNode.getServerEventBus(); |
427 |
|
- |
if ( zBus != null ) { |
428 |
|
- |
zBuses.add( zBus ); |
429 |
|
- |
} |
430 |
|
- |
} |
431 |
|
- |
return zBuses; |
432 |
|
- |
} |
433 |
|
- |
|
434 |
|
- |
/** |
435 |
|
- |
* called unsynchronized |
436 |
|
- |
*/ |
437 |
|
- |
private void notifyAncestorsOfAddedDecendant( List<ServerEventBus> pAncestors, int pClientId ) { |
438 |
|
- |
notifyAncestorsWith( pAncestors, pClientId, true ); |
439 |
|
- |
} |
440 |
|
- |
|
441 |
|
- |
/** |
442 |
|
- |
* called unsynchronized |
443 |
|
- |
*/ |
444 |
|
- |
private void notifyAncestorsOfRemovedDecendant( List<ServerEventBus> pAncestors, int pClientId ) { |
445 |
|
- |
notifyAncestorsWith( pAncestors, pClientId, false ); |
446 |
|
- |
} |
447 |
|
- |
|
448 |
|
- |
/** |
449 |
|
- |
* called unsynchronized |
450 |
|
- |
*/ |
451 |
|
- |
private void notifyAncestorsWith( List<ServerEventBus> pAncestors, int pClientId, boolean pAdd ) { |
452 |
|
- |
if ( !pAncestors.isEmpty() ) { |
453 |
|
- |
EventPackage eventPackage = |
454 |
|
- |
new NotificationReDecendantEventPackage( "ServerEventBusManager", pClientId, pAdd ); |
455 |
|
- |
for ( ServerEventBus zAncestor : pAncestors ) { |
456 |
|
- |
zAncestor.publish( eventPackage ); |
457 |
|
- |
} |
458 |
|
- |
} |
459 |
|
- |
} |
460 |
|
- |
} |
461 |
|
- |
} |
|
1 |
+ |
// This Source Code is in the Public Domain per: http://unlicense.org |
|
2 |
+ |
package org.litesoft.GWT.eventbus.server.nonpublic; |
|
3 |
+ |
|
|
4 |
+ |
import org.litesoft.GWT.eventbus.client.*; |
|
5 |
+ |
import org.litesoft.GWT.eventbus.client.nonpublic.*; |
|
6 |
+ |
import org.litesoft.GWT.eventbus.server.*; |
|
7 |
+ |
import org.litesoft.commonfoundation.base.*; |
|
8 |
+ |
import org.litesoft.logger.*; |
|
9 |
+ |
import org.litesoft.sequences.*; |
|
10 |
+ |
|
|
11 |
+ |
import javax.servlet.http.*; |
|
12 |
+ |
import java.util.*; |
|
13 |
+ |
|
|
14 |
+ |
public class ServerEventBusManager implements ServerEventBusBroadcaster { |
|
15 |
+ |
private static final Logger LOGGER = LoggerFactory.getLogger( ServerEventBusManager.class ); |
|
16 |
+ |
|
|
17 |
+ |
public static final ServerEventBusManager INSTANCE = new ServerEventBusManager(); |
|
18 |
+ |
|
|
19 |
+ |
private ServerEventBusManager() { |
|
20 |
+ |
} |
|
21 |
+ |
|
|
22 |
+ |
private static final String SERVER_EVENT_BUSES = "ServerEventBuses"; |
|
23 |
+ |
private static final Long MAX_CLIENT_ID = (long) (Integer.MAX_VALUE - 2000); |
|
24 |
+ |
private static SequenceSource sClientIdNumberSequenceSource = SequenceSource.NULL; |
|
25 |
+ |
|
|
26 |
+ |
public static synchronized void setClientIdNumberSequenceSource( SequenceSource pSequenceSource ) { |
|
27 |
+ |
sClientIdNumberSequenceSource = (pSequenceSource != null) ? pSequenceSource : SequenceSource.NULL; |
|
28 |
+ |
} |
|
29 |
+ |
|
|
30 |
+ |
public static synchronized int getNextClientIdNumber() { |
|
31 |
+ |
long cid = sClientIdNumberSequenceSource.getNextSequenceNumber( SERVER_EVENT_BUSES, MAX_CLIENT_ID ); |
|
32 |
+ |
return (int) cid; |
|
33 |
+ |
} |
|
34 |
+ |
|
|
35 |
+ |
private final NodeMap mNodes = new NodeMap(); |
|
36 |
+ |
|
|
37 |
+ |
public EventPackage getPackageForNewServerEventBus( int pClientIdNumber ) { |
|
38 |
+ |
return null; |
|
39 |
+ |
} |
|
40 |
+ |
|
|
41 |
+ |
public TemporaryServerEventBus createTemporaryServerEventBus( String pWhy, ServerEventBus pParent, |
|
42 |
+ |
ClientWindowInstanceDataManager pInitialClientWindowInstanceData ) { |
|
43 |
+ |
int zClientIdNumber = getNextClientIdNumber(); |
|
44 |
+ |
|
|
45 |
+ |
TemporaryServerEventBus zTempSEB = new TemporaryServerEventBus( zClientIdNumber ); |
|
46 |
+ |
|
|
47 |
+ |
synchronized ( mNodes ) { |
|
48 |
+ |
zTempSEB.initialize( pWhy, pParent.getClientIdNumber(), pInitialClientWindowInstanceData ); |
|
49 |
+ |
} |
|
50 |
+ |
|
|
51 |
+ |
// Force use of same stuff |
|
52 |
+ |
ServerEventBusSessionMapper.addServerEventBus( pParent, zTempSEB ); |
|
53 |
+ |
|
|
54 |
+ |
return zTempSEB; |
|
55 |
+ |
} |
|
56 |
+ |
|
|
57 |
+ |
public TemporaryServerEventBus createTemporaryServerEventBus( String pWhy, HttpServletRequest pRequest, |
|
58 |
+ |
ThreadLocalContextFactory pThreadLocalContextFactory, |
|
59 |
+ |
ClientWindowInstanceDataManager pInitialClientWindowInstanceData ) { |
|
60 |
+ |
int zClientIdNumber = getNextClientIdNumber(); |
|
61 |
+ |
|
|
62 |
+ |
TemporaryServerEventBus zTempSEB = new TemporaryServerEventBus( zClientIdNumber ); |
|
63 |
+ |
|
|
64 |
+ |
synchronized ( mNodes ) { |
|
65 |
+ |
zTempSEB.initialize( pWhy, null, pInitialClientWindowInstanceData ); |
|
66 |
+ |
} |
|
67 |
+ |
|
|
68 |
+ |
ServerEventBusSessionMapper.addServerEventBus( pRequest, pThreadLocalContextFactory, zTempSEB ); |
|
69 |
+ |
|
|
70 |
+ |
return zTempSEB; |
|
71 |
+ |
} |
|
72 |
+ |
|
|
73 |
+ |
/** |
|
74 |
+ |
* @return may return null |
|
75 |
+ |
*/ |
|
76 |
+ |
public Integer getParentClientID( int pClientIdNumber ) { |
|
77 |
+ |
return mNodes.getNode( pClientIdNumber ).getParentClientID(); |
|
78 |
+ |
} |
|
79 |
+ |
|
|
80 |
+ |
/** |
|
81 |
+ |
* @return may return null |
|
82 |
+ |
*/ |
|
83 |
+ |
public ServerEventBus getServerEventBus( int pClientIdNumber ) { |
|
84 |
+ |
return mNodes.getServerEventBusOrDisposedZombie( pClientIdNumber ); |
|
85 |
+ |
} |
|
86 |
+ |
|
|
87 |
+ |
/** |
|
88 |
+ |
* @return may return null |
|
89 |
+ |
*/ |
|
90 |
+ |
public ServerEventBus getRootServerEventBus( int pClientIdNumber ) { |
|
91 |
+ |
return mNodes.getRootNode( pClientIdNumber ).getServerEventBus(); |
|
92 |
+ |
} |
|
93 |
+ |
|
|
94 |
+ |
/** |
|
95 |
+ |
* @return may return null |
|
96 |
+ |
*/ |
|
97 |
+ |
public ServerEventBus getParentServerEventBus( int pClientIdNumber ) { |
|
98 |
+ |
return mNodes.getParentNode( pClientIdNumber ).getServerEventBus(); |
|
99 |
+ |
} |
|
100 |
+ |
|
|
101 |
+ |
/** |
|
102 |
+ |
* @return may return an empty array, but never null |
|
103 |
+ |
*/ |
|
104 |
+ |
public ServerEventBus[] getAllServerEventBuses() { |
|
105 |
+ |
return SelectorAll.INSTANCE.select( mNodes.getNodes() ); |
|
106 |
+ |
} |
|
107 |
+ |
|
|
108 |
+ |
/** |
|
109 |
+ |
* @return may return an empty array, but never null |
|
110 |
+ |
*/ |
|
111 |
+ |
public ServerEventBus[] getChildrenServerEventBuses( int pClientIdNumber ) { |
|
112 |
+ |
return new SelectorChildren( pClientIdNumber ).select( mNodes.getNodes() ); |
|
113 |
+ |
} |
|
114 |
+ |
|
|
115 |
+ |
/** |
|
116 |
+ |
* @return may return an empty array, but never null |
|
117 |
+ |
*/ |
|
118 |
+ |
public ServerEventBus[] getAllRelatedServerEventBuses( int pClientIdNumber ) { |
|
119 |
+ |
Node rootNode = mNodes.getRootNode( pClientIdNumber ); |
|
120 |
+ |
return rootNode.isReal() ? // |
|
121 |
+ |
new SelectorAllRelated().select( rootNode, mNodes.getNodes() ) : // |
|
122 |
+ |
ServerEventBus.EMPTY_ARRAY; |
|
123 |
+ |
} |
|
124 |
+ |
|
|
125 |
+ |
public void broadcast( EventPackage pEventPackage ) { |
|
126 |
+ |
if ( pEventPackage != null ) { |
|
127 |
+ |
ServerEventBus[] buses = getAllServerEventBuses(); |
|
128 |
+ |
if ( buses != null ) { |
|
129 |
+ |
for ( ServerEventBus bus : buses ) { |
|
130 |
+ |
if ( bus != null ) { |
|
131 |
+ |
bus.publishIfNotDisposed( pEventPackage ); |
|
132 |
+ |
} |
|
133 |
+ |
} |
|
134 |
+ |
} |
|
135 |
+ |
} |
|
136 |
+ |
} |
|
137 |
+ |
|
|
138 |
+ |
public static class BackDoor { |
|
139 |
+ |
public static ServerEventBus updateServerEventBus( ServerEventBus pNewSEB, Integer pParentClientID ) { |
|
140 |
+ |
return ServerEventBusManager.INSTANCE.mNodes.updateServerEventBus( pNewSEB, pParentClientID ); |
|
141 |
+ |
} |
|
142 |
+ |
} |
|
143 |
+ |
|
|
144 |
+ |
private static class Node { |
|
145 |
+ |
private int mClientID; |
|
146 |
+ |
private Integer mParentClientID; |
|
147 |
+ |
private ServerEventBus mServerEventBus; |
|
148 |
+ |
private int mChildCount = 0; |
|
149 |
+ |
|
|
150 |
+ |
public Node( Integer pParentClientID, int pClientID, ServerEventBus pServerEventBus ) { |
|
151 |
+ |
mParentClientID = pParentClientID; |
|
152 |
+ |
mClientID = pClientID; |
|
153 |
+ |
mServerEventBus = pServerEventBus; |
|
154 |
+ |
} |
|
155 |
+ |
|
|
156 |
+ |
public String toString() { |
|
157 |
+ |
return "" + mClientID + ":" + ((getServerEventBus() != null) ? "SEB" : "---") + " ^" + |
|
158 |
+ |
mParentClientID + " c:" + mChildCount; |
|
159 |
+ |
} |
|
160 |
+ |
|
|
161 |
+ |
public int getClientID() { |
|
162 |
+ |
return mClientID; |
|
163 |
+ |
} |
|
164 |
+ |
|
|
165 |
+ |
public Integer getParentClientID() { |
|
166 |
+ |
return mParentClientID; |
|
167 |
+ |
} |
|
168 |
+ |
|
|
169 |
+ |
public synchronized ServerEventBus getServerEventBus() { |
|
170 |
+ |
return mServerEventBus; |
|
171 |
+ |
} |
|
172 |
+ |
|
|
173 |
+ |
public synchronized void replaceServerEventBus( ServerEventBus pServerEventBus ) { |
|
174 |
+ |
mServerEventBus = pServerEventBus; |
|
175 |
+ |
} |
|
176 |
+ |
|
|
177 |
+ |
public synchronized ServerEventBus clearServerEventBus() { |
|
178 |
+ |
ServerEventBus rv = mServerEventBus; |
|
179 |
+ |
mServerEventBus = null; |
|
180 |
+ |
return rv; |
|
181 |
+ |
} |
|
182 |
+ |
|
|
183 |
+ |
public synchronized boolean shouldRemove() { |
|
184 |
+ |
return isReal() && (mServerEventBus == null) && (mChildCount < 1); |
|
185 |
+ |
} |
|
186 |
+ |
|
|
187 |
+ |
public synchronized void incChildCount() { |
|
188 |
+ |
mChildCount++; |
|
189 |
+ |
} |
|
190 |
+ |
|
|
191 |
+ |
public synchronized void decChildCount() { |
|
192 |
+ |
mChildCount--; |
|
193 |
+ |
} |
|
194 |
+ |
|
|
195 |
+ |
public boolean isReal() { |
|
196 |
+ |
return true; |
|
197 |
+ |
} |
|
198 |
+ |
} |
|
199 |
+ |
|
|
200 |
+ |
private static final Node NULL_NODE = new Node( null, 0, null ) { |
|
201 |
+ |
public boolean isReal() { |
|
202 |
+ |
return false; |
|
203 |
+ |
} |
|
204 |
+ |
|
|
205 |
+ |
public void incChildCount() { |
|
206 |
+ |
} |
|
207 |
+ |
|
|
208 |
+ |
public void decChildCount() { |
|
209 |
+ |
} |
|
210 |
+ |
}; |
|
211 |
+ |
|
|
212 |
+ |
private abstract static class AbstractSelector { |
|
213 |
+ |
public ServerEventBus[] select( Node[] pNodes ) { |
|
214 |
+ |
List<ServerEventBus> buses = new ArrayList<ServerEventBus>(); |
|
215 |
+ |
addAppropriate( buses, pNodes ); |
|
216 |
+ |
return buses.toArray( new ServerEventBus[buses.size()] ); |
|
217 |
+ |
} |
|
218 |
+ |
|
|
219 |
+ |
protected void addAppropriate( List<ServerEventBus> pBuses, Node[] pNodes ) { |
|
220 |
+ |
for ( Node node : pNodes ) { |
|
221 |
+ |
ServerEventBus seb = node.getServerEventBus(); |
|
222 |
+ |
if ( (seb != null) && acceptable( node, seb ) ) { |
|
223 |
+ |
pBuses.add( seb ); |
|
224 |
+ |
} |
|
225 |
+ |
} |
|
226 |
+ |
} |
|
227 |
+ |
|
|
228 |
+ |
protected boolean acceptable( Node pNode, ServerEventBus pSEB ) { |
|
229 |
+ |
return true; |
|
230 |
+ |
} |
|
231 |
+ |
} |
|
232 |
+ |
|
|
233 |
+ |
private static class SelectorAll extends AbstractSelector { |
|
234 |
+ |
public static final AbstractSelector INSTANCE = new SelectorAll(); |
|
235 |
+ |
} |
|
236 |
+ |
|
|
237 |
+ |
private static class SelectorChildren extends AbstractSelector { |
|
238 |
+ |
private Integer mParentID; |
|
239 |
+ |
|
|
240 |
+ |
public SelectorChildren( int pParentID ) { |
|
241 |
+ |
mParentID = pParentID; |
|
242 |
+ |
} |
|
243 |
+ |
|
|
244 |
+ |
protected boolean acceptable( Node pNode, ServerEventBus pSEB ) { |
|
245 |
+ |
return mParentID.equals( pNode.getParentClientID() ); |
|
246 |
+ |
} |
|
247 |
+ |
} |
|
248 |
+ |
|
|
249 |
+ |
private static class SelectorAllRelated { |
|
250 |
+ |
public ServerEventBus[] select( Node pRoot, Node[] pNodes ) { |
|
251 |
+ |
List<ServerEventBus> buses = new ArrayList<ServerEventBus>(); |
|
252 |
+ |
new Adder( buses, pNodes ).addAppropriate( pRoot ); |
|
253 |
+ |
return buses.toArray( new ServerEventBus[buses.size()] ); |
|
254 |
+ |
} |
|
255 |
+ |
|
|
256 |
+ |
private static class Adder { |
|
257 |
+ |
private List<ServerEventBus> mBuses; |
|
258 |
+ |
private Node[] mNodes; |
|
259 |
+ |
|
|
260 |
+ |
public Adder( List<ServerEventBus> pBuses, Node[] pNodes ) { |
|
261 |
+ |
mBuses = pBuses; |
|
262 |
+ |
mNodes = pNodes; |
|
263 |
+ |
} |
|
264 |
+ |
|
|
265 |
+ |
public void addAppropriate( Node pCurrent ) { |
|
266 |
+ |
ServerEventBus seb = pCurrent.getServerEventBus(); |
|
267 |
+ |
if ( seb != null ) { |
|
268 |
+ |
mBuses.add( seb ); |
|
269 |
+ |
} |
|
270 |
+ |
Integer parentID = pCurrent.getClientID(); |
|
271 |
+ |
for ( Node node : mNodes ) { |
|
272 |
+ |
if ( parentID.equals( node.getParentClientID() ) ) { |
|
273 |
+ |
addAppropriate( node ); |
|
274 |
+ |
} |
|
275 |
+ |
} |
|
276 |
+ |
} |
|
277 |
+ |
} |
|
278 |
+ |
} |
|
279 |
+ |
|
|
280 |
+ |
private static class NodeMap implements ServerEventBusDisposeListener { |
|
281 |
+ |
private final Map<Integer, Node> mServerEventBusNodes = new HashMap<Integer, Node>(); |
|
282 |
+ |
private final Set<Integer> mDisposedServerEventBuses = new HashSet<Integer>(); |
|
283 |
+ |
|
|
284 |
+ |
public Node getNode( Integer pClientIdNumberFromParentReference ) { |
|
285 |
+ |
return (pClientIdNumberFromParentReference == null) ? // |
|
286 |
+ |
NULL_NODE : // |
|
287 |
+ |
getNode( pClientIdNumberFromParentReference.intValue() ); |
|
288 |
+ |
} |
|
289 |
+ |
|
|
290 |
+ |
public Node getNode( int pClientIdNumber ) { |
|
291 |
+ |
Node node = getRealNode( pClientIdNumber ); |
|
292 |
+ |
return (node != null) ? node : NULL_NODE; |
|
293 |
+ |
} |
|
294 |
+ |
|
|
295 |
+ |
public Node getRequiredNode( int pClientIdNumber ) { |
|
296 |
+ |
Node node = getRealNode( pClientIdNumber ); |
|
297 |
+ |
if ( node == null ) { |
|
298 |
+ |
throw new IllegalStateException( "No ServerEventBus Node for ClientID: " + pClientIdNumber ); |
|
299 |
+ |
} |
|
300 |
+ |
return node; |
|
301 |
+ |
} |
|
302 |
+ |
|
|
303 |
+ |
// from ServerEventBusDisposeListener |
|
304 |
+ |
public void init( IServerEventBus pServerEventBus ) { |
|
305 |
+ |
} |
|
306 |
+ |
|
|
307 |
+ |
// from ServerEventBusDisposeListener |
|
308 |
+ |
public void disposing( IServerEventBus pServerEventBus ) { |
|
309 |
+ |
int clientId = pServerEventBus.getClientIdNumber(); |
|
310 |
+ |
|
|
311 |
+ |
List<ServerEventBus> mAncestors = Collections.emptyList(); |
|
312 |
+ |
|
|
313 |
+ |
ServerEventBus zExistingSEB; |
|
314 |
+ |
|
|
315 |
+ |
synchronized ( this ) { |
|
316 |
+ |
Node node = getNode( clientId ); |
|
317 |
+ |
zExistingSEB = node.clearServerEventBus(); |
|
318 |
+ |
if ( null != zExistingSEB ) { |
|
319 |
+ |
mAncestors = getAncestors( node ); |
|
320 |
+ |
|
|
321 |
+ |
mDisposedServerEventBuses.add( clientId ); |
|
322 |
+ |
} |
|
323 |
+ |
|
|
324 |
+ |
while ( node.shouldRemove() ) { |
|
325 |
+ |
mServerEventBusNodes.remove( node.getClientID() ); |
|
326 |
+ |
node = getNode( node.getParentClientID() ); |
|
327 |
+ |
node.decChildCount(); |
|
328 |
+ |
} |
|
329 |
+ |
} |
|
330 |
+ |
|
|
331 |
+ |
if ( zExistingSEB instanceof NonTemporaryServerEventBus ) { |
|
332 |
+ |
LOGGER.debug.log( "---Disposed: ", zExistingSEB ); |
|
333 |
+ |
} |
|
334 |
+ |
|
|
335 |
+ |
notifyAncestorsOfRemovedDecendant( mAncestors, clientId ); |
|
336 |
+ |
} |
|
337 |
+ |
|
|
338 |
+ |
public synchronized ServerEventBus getServerEventBusOrDisposedZombie( int pClientIdNumber ) { |
|
339 |
+ |
ServerEventBus zBus = getNode( pClientIdNumber ).getServerEventBus(); |
|
340 |
+ |
if ( zBus != null ) { |
|
341 |
+ |
return zBus; |
|
342 |
+ |
} |
|
343 |
+ |
return mDisposedServerEventBuses.contains( pClientIdNumber ) ? // |
|
344 |
+ |
ZombieServerEventBus.INSTANCE : // |
|
345 |
+ |
null; |
|
346 |
+ |
} |
|
347 |
+ |
|
|
348 |
+ |
public synchronized Node getRealNode( int pClientIdNumber ) { |
|
349 |
+ |
return mServerEventBusNodes.get( pClientIdNumber ); |
|
350 |
+ |
} |
|
351 |
+ |
|
|
352 |
+ |
public synchronized Node[] getNodes() { |
|
353 |
+ |
return mServerEventBusNodes.values().toArray( new Node[mServerEventBusNodes.size()] ); |
|
354 |
+ |
} |
|
355 |
+ |
|
|
356 |
+ |
public synchronized Node getParentNode( int pClientIdNumber ) { |
|
357 |
+ |
Integer parentClientID = getNode( pClientIdNumber ).getParentClientID(); |
|
358 |
+ |
return getNode( parentClientID ); |
|
359 |
+ |
} |
|
360 |
+ |
|
|
361 |
+ |
public synchronized Node getRootNode( int pClientIdNumber ) { |
|
362 |
+ |
Node node = getNode( pClientIdNumber ); |
|
363 |
+ |
for ( Integer parentClientID; null != (parentClientID = node.getParentClientID()); ) { |
|
364 |
+ |
node = getNode( parentClientID ); |
|
365 |
+ |
} |
|
366 |
+ |
return node; |
|
367 |
+ |
} |
|
368 |
+ |
|
|
369 |
+ |
public ServerEventBus updateServerEventBus( ServerEventBus pNewSEB, Integer pParentClientID ) { |
|
370 |
+ |
if ( !pNewSEB.getType().isManagable() ) { |
|
371 |
+ |
throw badType( "Managable", pNewSEB ); |
|
372 |
+ |
} |
|
373 |
+ |
|
|
374 |
+ |
int clientId = pNewSEB.getClientIdNumber(); |
|
375 |
+ |
|
|
376 |
+ |
ServerEventBus zExistingSEB = null; |
|
377 |
+ |
|
|
378 |
+ |
List<ServerEventBus> mAncestors = Collections.emptyList(); |
|
379 |
+ |
|
|
380 |
+ |
synchronized ( this ) { |
|
381 |
+ |
Node node = getRealNode( clientId ); |
|
382 |
+ |
if ( node != null ) { |
|
383 |
+ |
zExistingSEB = node.getServerEventBus(); |
|
384 |
+ |
if ( zExistingSEB != null ) { |
|
385 |
+ |
mAncestors = getAncestors( node ); |
|
386 |
+ |
|
|
387 |
+ |
// Since we are replacing we do NOT want to get the dispose notice on the old! |
|
388 |
+ |
zExistingSEB.removeListener( this ); |
|
389 |
+ |
|
|
390 |
+ |
if ( !pNewSEB.getType().isUpdateReplacable() ) { |
|
391 |
+ |
throw badType( "UpdateReplacable", pNewSEB ); |
|
392 |
+ |
} |
|
393 |
+ |
} |
|
394 |
+ |
node.replaceServerEventBus( pNewSEB ); |
|
395 |
+ |
if ( !Currently.areEqual( pParentClientID, node.getParentClientID() ) ) { |
|
396 |
+ |
throw new IllegalStateException( "Mismatched Parent Client IDs (" + |
|
397 |
+ |
node.getParentClientID() + ":Existing - New:" + |
|
398 |
+ |
pParentClientID + ") for Client ID: " + clientId ); |
|
399 |
+ |
} |
|
400 |
+ |
} else { |
|
401 |
+ |
mServerEventBusNodes.put( clientId, new Node( pParentClientID, clientId, pNewSEB ) ); |
|
402 |
+ |
if ( pParentClientID != null ) { |
|
403 |
+ |
getNode( pParentClientID ).incChildCount(); |
|
404 |
+ |
} |
|
405 |
+ |
} |
|
406 |
+ |
} |
|
407 |
+ |
if ( pNewSEB instanceof NonTemporaryServerEventBus ) { |
|
408 |
+ |
LOGGER.debug.log( "---Alive---: ", pNewSEB ); |
|
409 |
+ |
} |
|
410 |
+ |
pNewSEB.addListener( this ); |
|
411 |
+ |
notifyAncestorsOfAddedDecendant( mAncestors, clientId ); |
|
412 |
+ |
return zExistingSEB; |
|
413 |
+ |
} |
|
414 |
+ |
|
|
415 |
+ |
private IllegalStateException badType( String pWhy, ServerEventBus pNewSEB ) { |
|
416 |
+ |
return new IllegalStateException( "Not " + pWhy + ": " + pNewSEB.getType() + " ServerEventBus!" ); |
|
417 |
+ |
} |
|
418 |
+ |
|
|
419 |
+ |
/** |
|
420 |
+ |
* called under lock |
|
421 |
+ |
*/ |
|
422 |
+ |
private List<ServerEventBus> getAncestors( Node pNode ) { |
|
423 |
+ |
List<ServerEventBus> zBuses = new ArrayList<ServerEventBus>(); |
|
424 |
+ |
for ( Integer parentClientID; null != (parentClientID = pNode.getParentClientID()); ) { |
|
425 |
+ |
pNode = getNode( parentClientID ); |
|
426 |
+ |
ServerEventBus zBus = pNode.getServerEventBus(); |
|
427 |
+ |
if ( zBus != null ) { |
|
428 |
+ |
zBuses.add( zBus ); |
|
429 |
+ |
} |
|
430 |
+ |
} |
|
431 |
+ |
return zBuses; |
|
432 |
+ |
} |
|
433 |
+ |
|
|
434 |
+ |
/** |
|
435 |
+ |
* called unsynchronized |
|
436 |
+ |
*/ |
|
437 |
+ |
private void notifyAncestorsOfAddedDecendant( List<ServerEventBus> pAncestors, int pClientId ) { |
|
438 |
+ |
notifyAncestorsWith( pAncestors, pClientId, true ); |
|
439 |
+ |
} |
|
440 |
+ |
|
|
441 |
+ |
/** |
|
442 |
+ |
* called unsynchronized |
|
443 |
+ |
*/ |
|
444 |
+ |
private void notifyAncestorsOfRemovedDecendant( List<ServerEventBus> pAncestors, int pClientId ) { |
|
445 |
+ |
notifyAncestorsWith( pAncestors, pClientId, false ); |
|
446 |
+ |
} |
|
447 |
+ |
|
|
448 |
+ |
/** |
|
449 |
+ |
* called unsynchronized |
|
450 |
+ |
*/ |
|
451 |
+ |
private void notifyAncestorsWith( List<ServerEventBus> pAncestors, int pClientId, boolean pAdd ) { |
|
452 |
+ |
if ( !pAncestors.isEmpty() ) { |
|
453 |
+ |
EventPackage eventPackage = |
|
454 |
+ |
new NotificationReDecendantEventPackage( "ServerEventBusManager", pClientId, pAdd ); |
|
455 |
+ |
for ( ServerEventBus zAncestor : pAncestors ) { |
|
456 |
+ |
zAncestor.publish( eventPackage ); |
|
457 |
+ |
} |
|
458 |
+ |
} |
|
459 |
+ |
} |
|
460 |
+ |
} |
|
461 |
+ |
} |