bundles/org.simantics.scenegraph.profile/src/org/simantics/scenegraph/profile/common/ProfileObserver.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.scenegraph.profile.common;
  13
  14 import java.util.ArrayList;
  15 import java.util.Collection;
  16 import java.util.HashMap;
  17 import java.util.List;
  18 import java.util.Map;
  19 import java.util.concurrent.TimeUnit;
  20
  21 import org.simantics.Simantics;
  22 import org.simantics.db.AsyncRequestProcessor;
  23 import org.simantics.db.Resource;
  24 import org.simantics.db.Session;
  25 import org.simantics.db.common.session.SessionEventListenerAdapter;
  26 import org.simantics.db.procedure.Procedure;
  27 import org.simantics.db.service.QueryControl;
  28 import org.simantics.db.service.SessionEventSupport;
  29 import org.simantics.scenegraph.INode;
  30 import org.simantics.scenegraph.g2d.G2DSceneGraph;
  31 import org.simantics.scenegraph.profile.EvaluationContext;
  32 import org.simantics.scenegraph.profile.ProfileEntry;
  33 import org.simantics.scenegraph.profile.Style;
  34 import org.simantics.scenegraph.profile.impl.DebugPolicy;
  35 import org.simantics.scenegraph.profile.impl.ProfileActivationListener;
  36 import org.simantics.scenegraph.profile.request.RuntimeProfileActiveEntries;
  37 import org.simantics.utils.datastructures.Pair;
  38 import org.simantics.utils.datastructures.disposable.IDisposable;
  39 import org.simantics.utils.threads.IThreadWorkQueue;
  40 import org.simantics.utils.threads.ThreadUtils;
  41 import org.slf4j.Logger;
  42 import org.slf4j.LoggerFactory;
  43
  44 public class ProfileObserver implements EvaluationContext {
  45
  46     private static final Logger LOGGER = LoggerFactory.getLogger(ProfileObserver.class);
  47
  48     private final Session                     session;
  49
  50     /**
  51      * Runtime diagram resource.
  52      */
  53     private final Resource                    resource;
  54
  55     private final IDisposable                 canvas;
  56     private final IThreadWorkQueue            thread;
  57     @SuppressWarnings("unused")
  58     private final Object                      diagram;
  59     private final Runnable                    notification;
  60     private final G2DSceneGraph               sceneGraph;
  61
  62     private volatile boolean                  dirty               = true;
  63     private volatile boolean                  disposed            = false;
  64
  65     private boolean                           needSynchronizedUpdates = false;
  66     private List<Pair<Style, Object>>         updates             = new ArrayList<>();
  67     private boolean                           updateAll;
  68
  69     private ProfileActivationListener         activationListener;
  70
  71     private Map<String, Object>               constants           = new HashMap<String, Object>();
  72
  73     private Map<INode, Map<String, Object>>   temporaryProperties = new HashMap<INode, Map<String, Object>>();
  74     private Map<INode, Map<String, Object>>   properties          = new HashMap<INode, Map<String, Object>>();
  75
  76     private final SessionEventListenerAdapter transactionListener = new SessionEventListenerAdapter() {
  77         @Override
  78         public void writeTransactionFinished() {
  79             if (isDisposed())
  80                 dispose();
  81             if (dirty)
  82                 perform();
  83         }
  84         @Override
  85         public void readTransactionFinished() {
  86             if (isDisposed())
  87                 dispose();
  88             if (dirty)
  89                 perform();
  90         }
  91     };
  92
  93     public ProfileObserver(Session session, Resource resource, IThreadWorkQueue thread, IDisposable canvas, G2DSceneGraph sceneGraph, Object diagram, Map<String, Object> constants, Runnable notification) {
  94         //System.out.println(this + " NEW PROFILE OBSERVER: ");
  95         this.session = session;
  96         this.resource = resource;
  97         this.thread = thread;
  98         this.canvas = canvas;
  99         this.diagram = diagram;
 100         this.sceneGraph = sceneGraph;
 101         this.constants.putAll(constants);
 102         this.notification = notification;
 103         this.needSynchronizedUpdates = session.getService(QueryControl.class).getAmountOfQueryThreads() > 1;
 104
 105         attachSessionListener();
 106
 107         if (DebugPolicy.DEBUG_PROFILE_OBSERVER_PERFORM)
 108             System.out.println("ProfileObserver(" + this + ")");
 109
 110         // Tell SceneGraph that this observer is not yet done applying its operations
 111         if(sceneGraph != null)
 112             sceneGraph.setPending(ProfileObserver.this);
 113
 114     }
 115
 116     private void attachSessionListener() {
 117         SessionEventSupport eventSupport = session.getService(SessionEventSupport.class);
 118         eventSupport.addListener(transactionListener);
 119     }
 120
 121     private void detachSessionListener() {
 122         SessionEventSupport eventSupport = session.getService(SessionEventSupport.class);
 123         eventSupport.removeListener(transactionListener);
 124     }
 125
 126     public void dispose() {
 127         synchronized (this) {
 128             if (disposed)
 129                 return;
 130             disposed = true;
 131         }
 132
 133         if (DebugPolicy.DEBUG_PROFILE_OBSERVER_PERFORM)
 134             System.out.println("ProfileObserver.dispose(" + this + ")");
 135
 136         if(activationListener != null) {
 137             activationListener.cleanup();
 138             activationListener = null;
 139         }
 140
 141         detachSessionListener();
 142     }
 143
 144     @Override
 145     public void update(Style style, Object item) {
 146         if (DebugPolicy.DEBUG_PROFILE_OBSERVER_UPDATE)
 147             System.out.println("Profile observer marked dirty.");
 148
 149         if (needSynchronizedUpdates) {
 150             synchronized (updates) {
 151                 updates.add(Pair.make(style, item));
 152             }
 153         } else {
 154             updates.add(Pair.make(style, item));
 155         }
 156         //updateAll = true;
 157         dirty = true;
 158     }
 159
 160     public void update() {
 161         updateAll = true;
 162         dirty = true;
 163     }
 164
 165     private void perform() {
 166         dirty = false;
 167         if (DebugPolicy.DEBUG_PROFILE_OBSERVER_UPDATE)
 168             System.out.println("Profile observer detected a change.");
 169
 170         session.asyncRequest(new RuntimeProfileActiveEntries(resource), new Procedure<Collection<ProfileEntry>>() {
 171             @Override
 172             public void execute(final Collection<ProfileEntry> entries) {
 173
 174                 if (isDisposed())
 175                     return;
 176
 177                 ThreadUtils.asyncExec(thread, new Runnable() {
 178                     @Override
 179                     public void run() {
 180                         if (isDisposed())
 181                             return;
 182
 183                         temporaryProperties.clear();
 184
 185                         long t0 = DebugPolicy.DEBUG_PROFILE_OBSERVER_PERFORM ? System.nanoTime() : 0L;
 186
 187                         if (updateAll) {
 188                             for(ProfileEntry e : entries) {
 189                                 if (DebugPolicy.DEBUG_PROFILE_OBSERVER_PERFORM)
 190                                     System.out.println("Apply profile entry: " + e);
 191                                 e.apply(ProfileObserver.this);
 192                             }
 193                             updateAll = false;
 194                             if (needSynchronizedUpdates) {
 195                                 synchronized (updates) {
 196                                     updates.clear();
 197                                 }
 198                             } else {
 199                                 updates.clear();
 200                             }
 201                         } else {
 202                             List<Pair<Style, Object>> updatesCopy;
 203                             if (needSynchronizedUpdates) {
 204                                 synchronized (updates) {
 205                                     updatesCopy = new ArrayList<>(updates);
 206                                     updates.clear();
 207                                 }
 208                             } else {
 209                                 updatesCopy = new ArrayList<>(updates);
 210                                 updates.clear();
 211                             }
 212
 213                             for (Pair<Style, Object> update : updatesCopy) {
 214                                 Style style = update.first;
 215                                 Object item = update.second;
 216
 217                                 style.apply2(item, ProfileObserver.this);
 218                             }
 219                         }
 220
 221                         if (DebugPolicy.DEBUG_PROFILE_OBSERVER_PERFORM) {
 222                             long t1 = System.nanoTime();
 223                             System.out.println((t1-t0) / 1e6);
 224                         }
 225
 226                         if(dirty) {
 227                                 sceneGraph.setPending(ProfileObserver.this);
 228 //                              System.err.println("setPending, dirty=true");
 229                         }
 230                         else {
 231                                 sceneGraph.clearPending(ProfileObserver.this);
 232 //                              System.err.println("clearPending, dirty=false");
 233                         }
 234
 235                         notification.run();
 236 //                        canvas.getContentContext().setDirty();
 237
 238                         // Something is underway, schedule update
 239                         if (dirty) {
 240                             Simantics.async(() -> {
 241                                 if (isDisposed()) return;
 242                                 if (dirty) perform();
 243                             }, 100, TimeUnit.MILLISECONDS);
 244                         }
 245                     }
 246                 });
 247             }
 248
 249             @Override
 250             public void exception(Throwable t) {
 251                 LOGGER.error("RuntimeProfileActiveEntries request failed", t);
 252             }
 253         });
 254     }
 255
 256     @Override
 257     public boolean isDisposed() {
 258         return disposed || canvas.isDisposed();
 259     }
 260
 261     @Override
 262     public void exception(Throwable throwable) {
 263         LOGGER.error("Exception occurred during diagram profile observation", throwable);
 264     }
 265
 266     @SuppressWarnings("unchecked")
 267     @Override
 268     public <T> T getTemporaryProperty(INode element, String key) {
 269         Map<String, Object> map = temporaryProperties.get(element);
 270         T t = map == null ? null : (T) map.get(key);
 271         //System.out.println(this + ".getTemporaryProperty(" + element + ", " + key + "): " + t);
 272         return t;
 273     }
 274
 275     @Override
 276     public <T> void setTemporaryProperty(INode element, String key, T value) {
 277         //System.out.println(this + ".setTemporaryProperty(" + element + ", " + key + ", " + value + ")");
 278         Map<String, Object> map = temporaryProperties.get(element);
 279         if (map == null) {
 280             if (value == null)
 281                 return;
 282             map = new HashMap<String, Object>(8);
 283             temporaryProperties.put(element, map);
 284         }
 285         if (value == null) {
 286             map.remove(key);
 287             if (map.isEmpty())
 288                 temporaryProperties.remove(element);
 289         } else
 290             map.put(key, value);
 291     }
 292
 293     @SuppressWarnings("unchecked")
 294     @Override
 295     public <T> T getProperty(INode element, String key) {
 296         Map<String, Object> map = properties.get(element);
 297         T t = map == null ? null : (T) map.get(key);
 298         //System.out.println(this + ".getProperty(" + element + ", " + key + "): " + t);
 299         return t;
 300     }
 301
 302     @SuppressWarnings("unchecked")
 303     @Override
 304     public <T> T setProperty(INode element, String key, T value) {
 305         T result = null;
 306         //System.out.println(this + ".setProperty(" + element + ", " + key + ", " + value + ")");
 307         Map<String, Object> map = properties.get(element);
 308         if (map == null) {
 309             if (value == null)
 310                 return null;
 311             map = new HashMap<String, Object>(8);
 312             properties.put(element, map);
 313         }
 314         if (value == null) {
 315             result = (T) map.remove(key);
 316             if (map.isEmpty())
 317                 properties.remove(element);
 318         } else
 319             result = (T) map.put(key, value);
 320         return result;
 321     }
 322
 323     @SuppressWarnings("unchecked")
 324     @Override
 325     public <T> T getConstant(String key) {
 326         return (T) constants.get(key);
 327     }
 328
 329     @Override
 330     public String toString() {
 331         return "ProfileObserver[" + resource.getResourceId() + "]";
 332     }
 333
 334 //    @Override
 335 //    public ICanvasContext getContext() {
 336 //      return canvas;
 337 //    }
 338 //
 339 //    @Override
 340 //    public IDiagram getDiagram() {
 341 //      return diagram;
 342 //    }
 343
 344     public void listen(AsyncRequestProcessor processor, IDisposable disposable) {
 345         activationListener = new ProfileActivationListener(resource, this, disposable);
 346         processor.asyncRequest(new RuntimeProfileActiveEntries(resource), activationListener);
 347     }
 348
 349     @Override
 350     public Resource getResource() {
 351         return resource;
 352     }
 353
 354     @Override
 355     public G2DSceneGraph getSceneGraph() {
 356         return sceneGraph;
 357     }
 358
 359 }