2014-11-14 12:02:52 +01:00
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/*
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* This file is part of Applied Energistics 2.
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* Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved.
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*
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* Applied Energistics 2 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Applied Energistics 2 is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Applied Energistics 2. If not, see <http://www.gnu.org/licenses/lgpl>.
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*/
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2013-12-27 23:59:59 +01:00
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package appeng.me;
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2022-12-02 17:40:47 +01:00
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import java.lang.reflect.Method;
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import java.util.*;
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import java.util.Map.Entry;
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2014-11-30 04:58:08 +01:00
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2013-12-27 23:59:59 +01:00
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import appeng.api.networking.IGridNode;
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import appeng.api.networking.events.MENetworkEvent;
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import appeng.api.networking.events.MENetworkEventSubscribe;
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2014-02-07 21:37:22 +01:00
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import appeng.core.AELog;
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2013-12-27 23:59:59 +01:00
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2022-12-02 17:40:47 +01:00
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public class NetworkEventBus {
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private static final Collection<Class> READ_CLASSES = new HashSet<Class>();
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private static final
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Map<Class<? extends MENetworkEvent>, Map<Class, MENetworkEventInfo>> EVENTS
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= new HashMap<Class<? extends MENetworkEvent>, Map<Class, MENetworkEventInfo>>();
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void readClass(final Class listAs, final Class c) {
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if (READ_CLASSES.contains(c)) {
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return;
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}
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READ_CLASSES.add(c);
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try {
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for (final Method m : c.getMethods()) {
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final MENetworkEventSubscribe s
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= m.getAnnotation(MENetworkEventSubscribe.class);
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if (s != null) {
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final Class[] types = m.getParameterTypes();
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if (types.length == 1) {
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if (MENetworkEvent.class.isAssignableFrom(types[0])) {
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Map<Class, MENetworkEventInfo> classEvents
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= EVENTS.get(types[0]);
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if (classEvents == null) {
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EVENTS.put(
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types[0],
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classEvents = new HashMap<Class, MENetworkEventInfo>()
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);
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}
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MENetworkEventInfo thisEvent = classEvents.get(listAs);
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if (thisEvent == null) {
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thisEvent = new MENetworkEventInfo();
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}
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thisEvent.Add(types[0], c, m);
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classEvents.put(listAs, thisEvent);
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} else {
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throw new IllegalStateException(
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"Invalid ME Network Event Subscriber, " + m.getName()
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+ "s Parameter must extend MENetworkEvent."
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);
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}
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} else {
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throw new IllegalStateException(
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"Invalid ME Network Event Subscriber, " + m.getName()
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+ " must have exactly 1 parameter."
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);
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}
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}
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}
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} catch (final Throwable t) {
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throw new IllegalStateException(
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"Error while adding " + c.getName() + " to event bus", t
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);
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}
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}
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MENetworkEvent postEvent(final Grid g, final MENetworkEvent e) {
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final Map<Class, MENetworkEventInfo> subscribers = EVENTS.get(e.getClass());
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int x = 0;
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try {
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if (subscribers != null) {
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for (final Entry<Class, MENetworkEventInfo> subscriber :
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subscribers.entrySet()) {
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final MENetworkEventInfo target = subscriber.getValue();
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final GridCacheWrapper cache = g.getCaches().get(subscriber.getKey());
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if (cache != null) {
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x++;
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target.invoke(cache.getCache(), e);
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}
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for (final IGridNode obj : g.getMachines(subscriber.getKey())) {
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x++;
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target.invoke(obj.getMachine(), e);
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}
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}
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}
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} catch (final NetworkEventDone done) {
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// Early out.
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}
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e.setVisitedObjects(x);
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return e;
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}
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MENetworkEvent
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postEventTo(final Grid grid, final GridNode node, final MENetworkEvent e) {
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final Map<Class, MENetworkEventInfo> subscribers = EVENTS.get(e.getClass());
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int x = 0;
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try {
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if (subscribers != null) {
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final MENetworkEventInfo target = subscribers.get(node.getMachineClass());
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if (target != null) {
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x++;
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target.invoke(node.getMachine(), e);
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}
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}
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} catch (final NetworkEventDone done) {
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// Early out.
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}
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e.setVisitedObjects(x);
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return e;
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}
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private static class NetworkEventDone extends Throwable {
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private static final long serialVersionUID = -3079021487019171205L;
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}
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private class EventMethod {
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private final Class objClass;
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private final Method objMethod;
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private final Class objEvent;
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public EventMethod(
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final Class Event, final Class ObjClass, final Method ObjMethod
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) {
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this.objClass = ObjClass;
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this.objMethod = ObjMethod;
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this.objEvent = Event;
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}
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private void invoke(final Object obj, final MENetworkEvent e)
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throws NetworkEventDone {
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try {
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this.objMethod.invoke(obj, e);
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} catch (final Throwable e1) {
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AELog.error("[AppEng] Network Event caused exception:");
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AELog.error("Offending Class: " + obj.getClass().getName());
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AELog.error("Offending Object: " + obj.toString());
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AELog.debug(e1);
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throw new IllegalStateException(e1);
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}
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if (e.isCanceled()) {
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throw new NetworkEventDone();
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}
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}
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}
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private class MENetworkEventInfo {
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private final List<EventMethod> methods = new ArrayList<EventMethod>();
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private void
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Add(final Class Event, final Class ObjClass, final Method ObjMethod) {
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this.methods.add(new EventMethod(Event, ObjClass, ObjMethod));
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}
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private void invoke(final Object obj, final MENetworkEvent e)
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throws NetworkEventDone {
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for (final EventMethod em : this.methods) {
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em.invoke(obj, e);
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}
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}
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}
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2013-12-27 23:59:59 +01:00
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}
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