bundles/org.simantics/src/org/simantics/SimanticsPlatform.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;
  13
  14 import static org.simantics.db.common.utils.Transaction.commit;
  15 import static org.simantics.db.common.utils.Transaction.endTransaction;
  16 import static org.simantics.db.common.utils.Transaction.readGraph;
  17 import static org.simantics.db.common.utils.Transaction.startTransaction;
  18 import static org.simantics.db.common.utils.Transaction.writeGraph;
  19
  20 import java.io.File;
  21 import java.io.IOException;
  22 import java.nio.file.Files;
  23 import java.nio.file.Path;
  24 import java.nio.file.Paths;
  25 import java.time.Instant;
  26 import java.time.ZoneId;
  27 import java.time.format.DateTimeFormatter;
  28 import java.util.ArrayList;
  29 import java.util.Collection;
  30 import java.util.HashMap;
  31 import java.util.List;
  32 import java.util.Map;
  33 import java.util.Map.Entry;
  34 import java.util.Properties;
  35 import java.util.Set;
  36 import java.util.TreeMap;
  37 import java.util.UUID;
  38 import java.util.zip.ZipEntry;
  39 import java.util.zip.ZipFile;
  40
  41 import org.eclipse.core.runtime.ILog;
  42 import org.eclipse.core.runtime.IProduct;
  43 import org.eclipse.core.runtime.IProgressMonitor;
  44 import org.eclipse.core.runtime.IStatus;
  45 import org.eclipse.core.runtime.NullProgressMonitor;
  46 import org.eclipse.core.runtime.Platform;
  47 import org.eclipse.core.runtime.Status;
  48 import org.eclipse.core.runtime.SubMonitor;
  49 import org.eclipse.osgi.service.resolver.BundleDescription;
  50 import org.ini4j.Ini;
  51 import org.ini4j.InvalidFileFormatException;
  52 import org.simantics.databoard.Bindings;
  53 import org.simantics.databoard.Databoard;
  54 import org.simantics.datatypes.literal.Font;
  55 import org.simantics.datatypes.literal.RGB;
  56 import org.simantics.db.Driver;
  57 import org.simantics.db.Driver.Management;
  58 import org.simantics.db.Manager;
  59 import org.simantics.db.ReadGraph;
  60 import org.simantics.db.Resource;
  61 import org.simantics.db.Session;
  62 import org.simantics.db.SessionModel;
  63 import org.simantics.db.UndoContext;
  64 import org.simantics.db.VirtualGraph;
  65 import org.simantics.db.WriteGraph;
  66 import org.simantics.db.common.request.ObjectsWithType;
  67 import org.simantics.db.common.request.Queries;
  68 import org.simantics.db.common.request.WriteResultRequest;
  69 import org.simantics.db.common.utils.Transaction;
  70 import org.simantics.db.exception.ClusterSetExistException;
  71 import org.simantics.db.exception.DatabaseException;
  72 import org.simantics.db.exception.ResourceNotFoundException;
  73 import org.simantics.db.indexing.DatabaseIndexing;
  74 import org.simantics.db.layer0.genericrelation.DependenciesRelation;
  75 import org.simantics.db.layer0.util.SimanticsClipboardImpl;
  76 import org.simantics.db.layer0.util.SimanticsKeys;
  77 import org.simantics.db.layer0.util.TGTransferableGraphSource;
  78 import org.simantics.db.layer0.variable.VariableRepository;
  79 import org.simantics.db.management.SessionContext;
  80 import org.simantics.db.request.Read;
  81 import org.simantics.db.request.Write;
  82 import org.simantics.db.service.LifecycleSupport.LifecycleListener;
  83 import org.simantics.db.service.LifecycleSupport.LifecycleState;
  84 import org.simantics.db.service.QueryControl;
  85 import org.simantics.db.service.UndoRedoSupport;
  86 import org.simantics.db.service.VirtualGraphSupport;
  87 import org.simantics.db.service.XSupport;
  88 import org.simantics.graph.db.GraphDependencyAnalyzer;
  89 import org.simantics.graph.db.GraphDependencyAnalyzer.IU;
  90 import org.simantics.graph.db.GraphDependencyAnalyzer.IdentityNode;
  91 import org.simantics.graph.db.IImportAdvisor;
  92 import org.simantics.graph.db.ImportResult;
  93 import org.simantics.graph.db.TransferableGraphs;
  94 import org.simantics.graph.diff.Diff;
  95 import org.simantics.graph.diff.TransferableGraphDelta1;
  96 import org.simantics.internal.Activator;
  97 import org.simantics.internal.startup.StartupExtensions;
  98 import org.simantics.layer0.Layer0;
  99 import org.simantics.operation.Layer0X;
 100 import org.simantics.project.IProject;
 101 import org.simantics.project.ProjectFeatures;
 102 import org.simantics.project.ProjectKeys;
 103 import org.simantics.project.Projects;
 104 import org.simantics.project.exception.ProjectException;
 105 import org.simantics.project.features.registry.GroupReference;
 106 import org.simantics.project.management.DatabaseManagement;
 107 import org.simantics.project.management.GraphBundle;
 108 import org.simantics.project.management.GraphBundleEx;
 109 import org.simantics.project.management.GraphBundleRef;
 110 import org.simantics.project.management.PlatformUtil;
 111 import org.simantics.project.management.ServerManager;
 112 import org.simantics.project.management.ServerManagerFactory;
 113 import org.simantics.project.management.WorkspaceUtil;
 114 import org.simantics.utils.FileUtils;
 115 import org.simantics.utils.datastructures.Pair;
 116 import org.simantics.utils.logging.TimeLogger;
 117 import org.simantics.utils.strings.EString;
 118 import org.slf4j.Logger;
 119 import org.slf4j.LoggerFactory;
 120
 121 /**
 122  * SimanticsPlatform performs procedures required in order to get simantics
 123  * workbench into operational state. This consists of the following steps:
 124  * <ul>
 125  *     <li> Asserting there is Database
 126  *     </li>
 127  *     <li> Starting Database process
 128  *     </li>
 129  *     <li> Opening a session to Database process
 130  *     </li>
 131  *     <li> Asserting required ontologies or other transferable graphs are installed in the database
 132  *     </li>
 133  *     <li> Asserting required project is installed in the database
 134  *     </li>
 135  *     <li> Asserting Simantics Features are installed in the database
 136  *     </li>
 137  *     <li> Asserting Simantics Features are installed to the project
 138  *     </li>
 139  *     <li> Shutdown: Save Session, Close session, Kill Database process
 140  *     </li>
 141  * </ul>
 142  *
 143  * @author Toni Kalajainen <toni.kalajainen@vtt.fi>
 144  */
 145 public class SimanticsPlatform implements LifecycleListener {
 146
 147     private static final Logger LOGGER = LoggerFactory.getLogger(SimanticsPlatform.class);
 148
 149     /**
 150      * The policy is relevant when developing Simantics from Eclipse IDE.
 151      * It is applied when the ontology in the database of a workspace doesn't match
 152      * a newer ontology in the Eclipse workspace.
 153      */
 154     public static enum OntologyRecoveryPolicy { ThrowError, Merge, ReinstallDatabase }
 155
 156     /**
 157      * This policy dictates how the Simantics platform startup should react if
 158      * the started workspace is not set up properly. The alternatives are to
 159      * just throw an error and fail or to attempt all possible measures to fix
 160      * the encountered problems.
 161      */
 162     public static enum RecoveryPolicy { ThrowError, FixError }
 163
 164     /** Singleton instance, started in SimanticsWorkbenchAdvisor */
 165     public static final SimanticsPlatform INSTANCE = new SimanticsPlatform();
 166
 167     /** Set to true when the Simantics Platform is in good-and-go condition */
 168     public boolean running;
 169
 170     /** ID of the database driver that the platform is currently using */
 171     private String currentDatabaseDriver;
 172
 173     /** Database Session */
 174     public Session session;
 175     private Management databasebManagement;
 176
 177     /** Database session context */
 178     public SessionContext sessionContext;
 179
 180     /** Project identifier in Database */
 181     public String projectURI;
 182
 183     /** Project name */
 184     public String projectName;
 185
 186     /** Project resource */
 187     public Resource projectResource;
 188
 189     /** Session specific bindings */
 190     public SimanticsBindings simanticsBindings;
 191     public SimanticsBindings simanticsBindings2;
 192
 193     public Thread mainThread;
 194
 195     private Thread shutdownHook = new Thread() {
 196         @Override
 197         public void run() {
 198             try {
 199                 LOGGER.warn("Simantics platform was not properly shut down. Executing safety shutdown hook.");
 200                 shutdown(null, false);
 201             } catch (PlatformException e) {
 202                 LOGGER.error("Simantics Platform shutdown hook execution failed.", e);
 203                 log.log(new Status(IStatus.ERROR, Activator.PLUGIN_ID, "Simantics Platform shutdown hook execution failed.", e));
 204             }
 205         }
 206     };
 207
 208     /**
 209      * The {@link IProject} activated by
 210      * {@link #startUp(IProgressMonitor, RecoveryPolicy, OntologyRecoveryPolicy, ServerAddress, PlatformUserAgent)}
 211      */
 212     private IProject project;
 213
 214     protected ILog log;
 215
 216     /**
 217      * Create a new simantics plaform manager in uninitialized state and
 218      * with default policies. <p>
 219      */
 220     public SimanticsPlatform() {
 221         log = Platform.getLog(Activator.getBundleContext().getBundle());
 222         mainThread = Thread.currentThread();
 223     }
 224
 225     public String getApplicationClientId() {
 226         IProduct product = Platform.getProduct();
 227         if(product == null) return "noProduct";//UUID.randomUUID().toString();
 228         String application = product.getApplication();
 229         return application != null ? application : UUID.randomUUID().toString();
 230     }
 231
 232     private Session setupDatabase(String databaseDriverId, IProgressMonitor progressMonitor, RecoveryPolicy workspacePolicy, PlatformUserAgent userAgent) throws PlatformException {
 233         if (progressMonitor == null)
 234             progressMonitor = new NullProgressMonitor();
 235         Path workspaceLocation = Platform.getLocation().toFile().toPath();
 236         Path dbLocation = workspaceLocation.resolve("db");
 237         Path dbIniPath = workspaceLocation.resolve("db.ini");
 238         // The driver file overrides any command line arguments to prevent
 239         // using the wrong driver for an existing database directory.
 240         ServerManager serverManager;
 241         try {
 242             Ini dbIni = loadOrCreateDatabaseIni(dbIniPath, databaseDriverId);
 243             databaseDriverId = dbIni.get("driver", "id");
 244             serverManager = ServerManagerFactory.create(databaseDriverId, dbLocation.toAbsolutePath().toString());
 245         } catch (DatabaseException | IOException e) {
 246             throw new PlatformException("Failed to initialize database ServerManager with driver " + databaseDriverId, e);
 247         }
 248         progressMonitor.beginTask("Setting up Simantics Database", 100);
 249         progressMonitor.setTaskName("Asserting Database is installed.");
 250         String msg = "Failed to initialize Simantics database.";
 251         try {
 252             // Create database
 253             log.log(new Status(IStatus.INFO, Activator.PLUGIN_ID, "Initializing database at " + dbLocation + " with driver " + databaseDriverId));
 254             progressMonitor.setTaskName("Creating database at " + dbLocation);
 255             databasebManagement = serverManager.getManagement(dbLocation.toFile());
 256             databasebManagement.create();
 257             currentDatabaseDriver = databaseDriverId;
 258             // Create layer0.
 259             return serverManager.createDatabase(dbLocation.toFile());
 260         } catch (DatabaseException e) {
 261             throw new PlatformException(msg, e);
 262         } catch (Throwable e) {
 263             throw new PlatformException(msg, e);
 264         } finally {
 265             progressMonitor.worked(20);
 266         }
 267     }
 268
 269     public void synchronizeOntologies(IProgressMonitor progressMonitor, OntologyRecoveryPolicy ontologyPolicy, boolean requireSynchronize) throws PlatformException {
 270
 271         if (progressMonitor == null) progressMonitor = new NullProgressMonitor();
 272
 273         final DatabaseManagement mgmt = new DatabaseManagement();
 274
 275         PlatformUtil.compileAllDynamicOntologies();
 276
 277         progressMonitor.setTaskName("Asserting all ontologies are installed");
 278         final Map<GraphBundleRef, GraphBundleEx> platformTGs = new HashMap<GraphBundleRef, GraphBundleEx>();
 279         try {
 280
 281             // Get a list of bundles installed into the database
 282             progressMonitor.subTask("find installed bundles from database");
 283             Map<GraphBundleRef, GraphBundleEx> installedTGs = new HashMap<GraphBundleRef, GraphBundleEx>();
 284             for (GraphBundle b : session.syncRequest( mgmt.GraphBundleQuery )) {
 285                 installedTGs.put(GraphBundleRef.of(b), GraphBundleEx.extend(b));
 286             }
 287
 288             if(!requireSynchronize && installedTGs.size() > 1 && !Platform.inDevelopmentMode()) return;
 289 //            if(installedTGs.size() > 1) return;
 290
 291             // Get a list of all bundles in the platform (Bundle Context)
 292             List<GraphBundle> tgs = new ArrayList<GraphBundle>();
 293             progressMonitor.subTask("load all transferable graphs from platform");
 294             PlatformUtil.getAllGraphs(tgs);
 295             progressMonitor.subTask("extend bundles to compile versions");
 296             for (GraphBundle b : tgs) {
 297                 GraphBundleEx gbe = GraphBundleEx.extend(b);
 298                 gbe.build();
 299                 platformTGs.put(GraphBundleRef.of(b), gbe);
 300             }
 301
 302             // Compile a list of TGs that need to be installed or reinstalled in the database
 303             progressMonitor.subTask("check bundle reinstallation demand");
 304             List<GraphBundleEx> installTGs = new ArrayList<GraphBundleEx>();
 305             // Create list of TGs to update, <newTg, oldTg>
 306             Map<GraphBundleEx,GraphBundleEx> reinstallTGs = new TreeMap<GraphBundleEx,GraphBundleEx>();
 307             for (Entry<GraphBundleRef, GraphBundleEx> e : platformTGs.entrySet()) {
 308                 GraphBundleRef key = e.getKey();
 309                 GraphBundleEx platformBundle = e.getValue();
 310                 GraphBundleEx existingBundle = installedTGs.get(key);
 311
 312 //                System.out.println("GraphBundleRef key=" + key.toString());
 313
 314                 if (existingBundle == null) {
 315                     // Bundle did not exist in the database, put it into list of bundles to install
 316                     installTGs.add(platformBundle);
 317                 }
 318                 else {
 319                     // Bundle exists in the database
 320                     boolean platformBundleIsNewer = existingBundle.getVersion().compareTo(platformBundle.getVersion())<0;
 321                     if (!platformBundleIsNewer)
 322                         continue;
 323                     // Check hash of transferable graph to know whether to update or not.
 324                     if (platformBundle.getHashcode() == existingBundle.getHashcode())
 325                         continue;
 326                     //System.out.println("Ontology hashcodes do not match: platform bundle="
 327                     //        + platformBundle.getVersionedId() + ", hash=" + platformBundle.getHashcode()
 328                     //        + "; existing bundle=" + existingBundle.getVersionedId() + ", hash=" + existingBundle.getHashcode());
 329                     reinstallTGs.put(platformBundle, existingBundle);
 330                 }
 331             }
 332             // INSTALL
 333             // Database is missing graphs
 334             if (!installTGs.isEmpty() || !reinstallTGs.isEmpty()) {
 335                 session.getService(XSupport.class).setServiceMode(true, true);
 336
 337                 // Throw error
 338                 if (ontologyPolicy == OntologyRecoveryPolicy.ThrowError) {
 339                     StringBuilder sb = new StringBuilder("The following graphs are not installed in the database: ");
 340                     if (!installTGs.isEmpty()) {
 341                         int i = 0;
 342                         for (GraphBundleEx e : installTGs) {
 343                             if (i>0) sb.append(", ");
 344                             i++;
 345                             sb.append(e.toString());
 346                         }
 347                         sb.append(" is missing from the database.\n");
 348                     }
 349                     if (!reinstallTGs.isEmpty()) {
 350                         int i = 0;
 351                         for (Entry<GraphBundleEx, GraphBundleEx> e : reinstallTGs.entrySet()) {
 352                             if (i>0) sb.append(", ");
 353                             i++;
 354                             sb.append(e.getKey().toString());
 355                         }
 356                         sb.append(" Database/Platform Bundle version mismatch.\n");
 357                     }
 358                     sb.append("Hint: Use -fixErrors to install the graphs.");
 359                     throw new PlatformException(sb.toString());
 360                 }
 361                 // Reinstall database
 362                 if (ontologyPolicy == OntologyRecoveryPolicy.ReinstallDatabase) {
 363                     log.log(new Status(IStatus.INFO, Activator.PLUGIN_ID, "Reinstalling the database."));
 364                     // TODO Install DB
 365                     // Stop Session
 366                     // Kill Process
 367                     // Delete Database
 368                     // Create Database
 369                     // Start Database
 370                     // Open Session
 371                     // Install TGs
 372                     throw new PlatformException("Reinstalling Database, NOT IMPLEMENTED");
 373                 }
 374
 375                 if (ontologyPolicy == OntologyRecoveryPolicy.Merge) {
 376                     progressMonitor.subTask("Merging ontology changes");
 377                     // Sort missing TGs into install order
 378                     GraphDependencyAnalyzer<GraphBundle> analyzer = new GraphDependencyAnalyzer<GraphBundle>();
 379                     for(GraphBundle tg : installTGs) analyzer.addGraph(tg, tg.getGraph());
 380                     for(GraphBundle tg : reinstallTGs.keySet()) analyzer.addGraph(tg, tg.getGraph());
 381                     if(!analyzer.analyzeDependency()) {
 382                         Collection<Pair<GraphBundle, GraphBundle>> problems = analyzer.getConflicts();
 383                         StringBuilder sb = new StringBuilder();
 384                         for (Pair<GraphBundle, GraphBundle> problem : problems) {
 385                             sb.append("Conflict with "+problem.first+" and "+problem.second+".\n");
 386                         }
 387                         throw new PlatformException(sb.toString());
 388                     }
 389                     else if(!session.syncRequest( analyzer.queryExternalDependenciesSatisfied )) {
 390                         Collection<IdentityNode> unsatisfiedDependencies = analyzer.getUnsatisfiedDependencies();
 391                         StringBuilder sb = new StringBuilder();
 392                         for (IdentityNode dep: unsatisfiedDependencies) {
 393                             sb.append("Unsatisfied Dependency "+dep+". Required by\n");
 394                             for(IU iu : GraphDependencyAnalyzer.toCollection(dep.getRequires())) {
 395                                 sb.append("    " + ((GraphBundle)iu.getId()).getId() + "\n");
 396                             }
 397                         }
 398                         throw new PlatformException(sb.toString());
 399                     }
 400
 401                     List<GraphBundle> sortedBundles = analyzer.getSortedGraphs();
 402                     if(!sortedBundles.isEmpty()) {
 403
 404                         session.syncRequest((Write) graph -> {
 405                             try {
 406                                 graph.newClusterSet(graph.getRootLibrary());
 407                             } catch (ClusterSetExistException e) {
 408                                 // Cluster set exist already, no problem.
 409                             }
 410                             graph.setClusterSet4NewResource(graph.getRootLibrary());
 411                             graph.flushCluster();
 412                         });
 413
 414                         boolean mergedOntologies = false;
 415
 416                         // Install TGs
 417                         for(final GraphBundle tg : sortedBundles) {
 418
 419                                 final IImportAdvisor advisor = new OntologyImportAdvisor(tg, mgmt);
 420                                 final GraphBundle oldTG = reinstallTGs.get(tg);
 421
 422                                 boolean createImmutable = tg.getImmutable();
 423
 424                                 if (oldTG==null) {
 425
 426                                 session.getService(XSupport.class).setServiceMode(true, createImmutable);
 427
 428                                         // Install TG
 429                                         log.log(new Status(IStatus.INFO, Activator.PLUGIN_ID, "Installing "+tg.toString()+" - "+tg.getName()));
 430                                         ImportResult result = TransferableGraphs.importGraph1(session, new TGTransferableGraphSource(tg.getGraph()), advisor, null);
 431                                         if (!result.missingExternals.isEmpty()) {
 432                                                 log.log(new Status(IStatus.ERROR, Activator.PLUGIN_ID, "Import of " + tg.toString() + " was missing the following external entities:\n" + EString.implode(result.missingExternals)));
 433                                         }
 434                                 } else {
 435                                         if(!createImmutable)
 436                                                 continue;
 437
 438                                         // Merge TG
 439                                         startTransaction(session, false);
 440                                         TransferableGraphDelta1 delta = new Diff(oldTG.getGraph(), tg.getGraph()).diff();
 441                                         final long[] oldResources = oldTG.getResourceArray();
 442                                         boolean changes = TransferableGraphs.hasChanges(readGraph(), oldResources, delta);
 443                                         endTransaction();
 444                                         if (!changes) {
 445                                             //log.log(new Status(IStatus.INFO, Activator.PLUGIN_ID, "Nothing to merge for "+tg.toString()));
 446                                             continue;
 447                                         }
 448
 449                                 log.log(new Status(IStatus.INFO, Activator.PLUGIN_ID, "Merging new version of "+tg.toString()));
 450
 451                                         startTransaction(session, true);
 452
 453                                         //delta.print();
 454                                         try {
 455
 456
 457                                                 long[] resourceArray = TransferableGraphs.applyDelta(writeGraph(), oldResources, delta);
 458                                                 tg.setResourceArray(resourceArray);
 459                                                 mgmt.setGraphBundleEntry(tg);
 460                                                 commit();
 461                                                 mergedOntologies = true;
 462                                         } catch (Throwable t) {
 463                                                 throw new PlatformException(t);
 464                                         } finally {
 465                                                 endTransaction();
 466                                         }
 467                                 }
 468                         }
 469
 470                         session.syncRequest((Write) graph -> {
 471                             graph.setClusterSet4NewResource(graph.getRootLibrary());
 472                             graph.flushCluster();
 473                         });
 474
 475                         if (mergedOntologies)
 476                             DatabaseIndexing.deleteAllIndexes();
 477                     }
 478
 479                     TimeLogger.log("Ontologies synchronized.");
 480
 481                 }
 482                 session.getService(XSupport.class).setServiceMode(false, false);
 483             }
 484             progressMonitor.worked(20);
 485         } catch (IOException e) {
 486             throw new PlatformException(e);
 487         } catch (DatabaseException e) {
 488             throw new PlatformException(e);
 489         }
 490
 491     }
 492
 493     public boolean assertConfiguration(IProgressMonitor progressMonitor, RecoveryPolicy workspacePolicy) throws PlatformException {
 494
 495         if (progressMonitor == null) progressMonitor = new NullProgressMonitor();
 496
 497         File workspaceLocation = Platform.getLocation().toFile();
 498
 499         boolean installProject = false;
 500         progressMonitor.setTaskName("Asserting simantics.cfg is installed");
 501         try {
 502             File propertyFile = new File(workspaceLocation, "simantics.cfg");
 503             Properties properties;
 504             try {
 505                 properties = WorkspaceUtil.readProperties(propertyFile);
 506             } catch (IOException e) {
 507                 if (workspacePolicy == RecoveryPolicy.ThrowError) throw new PlatformException("Could not load "+propertyFile);
 508
 509                 // Create a project and write Property file
 510                 properties = new Properties();
 511                 properties.setProperty("project_uri", "http://Projects/Development%20Project");
 512                 properties.setProperty("project_name", "Development Project");
 513                 WorkspaceUtil.writeProperties(propertyFile, properties);
 514                 installProject |= true;
 515             }
 516             projectURI = properties.getProperty("project_uri");
 517             projectName = properties.getProperty("project_name");
 518             progressMonitor.worked(10);
 519         } catch (IOException e) {
 520             throw new PlatformException(e);
 521         }
 522
 523         return installProject;
 524
 525     }
 526
 527     public boolean assertProject(IProgressMonitor progressMonitor, RecoveryPolicy workspacePolicy, boolean installProject) throws PlatformException {
 528
 529         if (progressMonitor == null) progressMonitor = new NullProgressMonitor();
 530
 531         final DatabaseManagement mgmt = new DatabaseManagement();
 532
 533         progressMonitor.setTaskName("Asserting project resource exists in the database");
 534         try {
 535             projectResource = session.syncRequest( Queries.resource( projectURI ) );
 536         } catch (ResourceNotFoundException nfe) {
 537             // Project was not found
 538             if (workspacePolicy == RecoveryPolicy.ThrowError)
 539                 throw new PlatformException("Project Resource "+projectURI+" is not found in the database.");
 540             // Create empty project with no features
 541             try {
 542                 Transaction.startTransaction(session, true);
 543                 try {
 544                     // The project needs to be created mutable.
 545                     session.getService(XSupport.class).setServiceMode(true, false);
 546
 547                     ArrayList<String> empty = new ArrayList<String>();
 548                     projectResource = mgmt.createProject(projectName, empty);
 549                     installProject |= true;
 550
 551                     session.getService(XSupport.class).setServiceMode(false, false);
 552                     Transaction.commit();
 553                 } finally {
 554                     Transaction.endTransaction();
 555                 }
 556                 //session.getService( LifecycleSupport.class ).save();
 557             } catch (DatabaseException e) {
 558                 throw new PlatformException("Failed to create "+projectURI, e);
 559             }
 560         } catch (DatabaseException e) {
 561             throw new PlatformException("Failed to create "+projectURI, e);
 562         }
 563         progressMonitor.worked(10);
 564
 565         return installProject;
 566
 567     }
 568
 569     public void updateInstalledGroups(IProgressMonitor progressMonitor, boolean installProject) throws PlatformException {
 570
 571         if (installProject)
 572         {
 573             // Attach all feature groups available in platform to created project
 574             progressMonitor.setTaskName("Install all features");
 575             Set<GroupReference> publishedFeatureGroups = ProjectFeatures.getInstallGroupsOfPublishedFeatures();
 576             Collection<GroupReference> groupsWithoutVersion = GroupReference.stripVersions(publishedFeatureGroups);
 577
 578             try {
 579                 session.syncRequest(
 580                         (Write) graph ->
 581                         Projects.setProjectInstalledGroups(graph, projectResource, groupsWithoutVersion));
 582             } catch (DatabaseException ae) {
 583                 throw new PlatformException("Failed to install features", ae);
 584             }
 585             progressMonitor.worked(10);
 586         }
 587
 588     }
 589
 590     public void assertSessionModel(IProgressMonitor progressMonitor) throws PlatformException {
 591
 592         Properties properties = session.getService(Properties.class);
 593         final String clientId = properties.getProperty("clientId");
 594
 595         try {
 596
 597             // Currently this needs to be done before data becomes available
 598             VirtualGraphSupport support = session.getService(VirtualGraphSupport.class);
 599             VirtualGraph activations = support.getWorkspacePersistent("activations");
 600
 601             Resource sessionModel = session.syncRequest(new Read<Resource>() {
 602
 603                 @Override
 604                 public Resource perform(ReadGraph graph) throws DatabaseException {
 605
 606                     Layer0X L0X = Layer0X.getInstance(graph);
 607                     for(Resource sessionModel : graph.syncRequest(new ObjectsWithType(graph.getRootLibrary(), L0X.HasSession, L0X.Session))) {
 608                         String id = graph.getPossibleRelatedValue(sessionModel, L0X.Session_HasClientId);
 609                         if(id != null && id.equals(clientId)) return sessionModel;
 610                     }
 611                     return null;
 612
 613                 }
 614
 615             });
 616
 617             if(sessionModel == null) {
 618
 619                 sessionModel = session.syncRequest(new WriteResultRequest<Resource>(activations) {
 620
 621                     @Override
 622                     public Resource perform(WriteGraph graph) throws DatabaseException {
 623                         Layer0 L0 = Layer0.getInstance(graph);
 624                         Layer0X L0X = Layer0X.getInstance(graph);
 625                         Resource session = graph.newResource();
 626                         graph.claim(session, L0.InstanceOf, null, L0X.Session);
 627                         graph.claim(session, L0X.Session_HasUser, null, graph.getResource("http://Users/AdminUser"));
 628                         graph.addLiteral(session, L0X.Session_HasClientId, L0X.Session_HasClientId_Inverse, clientId, Bindings.STRING);
 629                         graph.claim(graph.getRootLibrary(), L0X.HasSession, session);
 630                         return session;
 631                     }
 632                 });
 633
 634             }
 635
 636             session.registerService(SessionModel.class, new PlatformSessionModel(sessionModel));
 637         } catch (DatabaseException e) {
 638             throw new PlatformException(e);
 639         }
 640
 641     }
 642
 643     static class PlatformSessionModel implements SessionModel {
 644         private final Resource sessionModel;
 645
 646         public PlatformSessionModel(Resource model) {
 647             this.sessionModel = model;
 648         }
 649
 650         @Override
 651         public Resource getResource() {
 652             return sessionModel;
 653         }
 654     }
 655
 656     public void resetDatabase(IProgressMonitor monitor) throws PlatformException {
 657         File dbLocation = Platform.getLocation().append("db").toFile();
 658         if(!dbLocation.exists()) return;
 659         try { // Load driver
 660             Driver driver = Manager.getDriver("procore");
 661             Management management = driver.getManagement(dbLocation.getAbsolutePath(), null);
 662             management.delete();
 663         } catch (DatabaseException e) {
 664             throw new PlatformException("Failed to remove database at " + dbLocation.getAbsolutePath(), e);
 665         }
 666         // We have created extra files to database folder which have to be deleted also.
 667         // This is an awful idea! Do not create extra files to database folder!
 668         Throwable t = null;
 669         for (int i=0; i<10; ++i) {
 670             try {
 671                 FileUtils.deleteAll(dbLocation);
 672                 t = null;
 673                 break;
 674             } catch (IOException e) {
 675                 // Assuming this has been thrown because delete file/folder failed.
 676                 t = e;
 677             }
 678             try {
 679                 Thread.sleep(200);
 680             } catch (InterruptedException e) {
 681                 // Ignoring interrupted exception.
 682             }
 683         }
 684         if (null != t)
 685             throw new PlatformException("Failed to remove database folder at " + dbLocation.getAbsolutePath(), t);
 686     }
 687     public void resetWorkspace(IProgressMonitor monitor, ArrayList<String> fileFilter) throws PlatformException, IllegalStateException, IOException {
 688         File file = Platform.getLocation().toFile();
 689         if (null != fileFilter)
 690             FileUtils.deleteAllWithFilter(file , fileFilter);
 691         resetDatabase(monitor);
 692     }
 693
 694     public boolean handleBaselineDatabase() throws PlatformException {
 695         Path workspaceLocation = Platform.getLocation().toFile().toPath();
 696         Path baselineIndicatorFile = workspaceLocation.resolve(".baselined");
 697         if (Files.isRegularFile(baselineIndicatorFile)) {
 698             // This means that the workspace has already been initialized from
 699             // a database baseline and further initialization is not necessary.
 700             return true;
 701         }
 702
 703         String dbBaselineArchive = System.getProperty("org.simantics.db.baseline", null);
 704         if (dbBaselineArchive == null)
 705             return false;
 706
 707         Path baseline = Paths.get(dbBaselineArchive);
 708         if (!Files.isRegularFile(baseline))
 709             throw new PlatformException("Specified database baseline archive " + baseline + " does not exist. Cannot initialize workspace database.");
 710
 711         validateBaselineFile(baseline);
 712         validateWorkspaceForBaselineInitialization(workspaceLocation);
 713
 714         try {
 715             Files.createDirectories(workspaceLocation);
 716             FileUtils.extractZip(baseline.toFile(), workspaceLocation.toFile());
 717             Files.write(baselineIndicatorFile, baselineIndicatorContents(baselineIndicatorFile));
 718             return true;
 719         } catch (IOException e) {
 720             throw new PlatformException(e);
 721         }
 722     }
 723
 724     private static final DateTimeFormatter TIMESTAMP_FORMAT = DateTimeFormatter.ofPattern("d. MMM yyyy HH:mm:ss");
 725
 726     private static byte[] baselineIndicatorContents(Path path) throws IOException {
 727         return String.format("%s%n%s%n",
 728                 path.toString(),
 729                 Instant.now().atZone(ZoneId.systemDefault()).format(TIMESTAMP_FORMAT))
 730                 .getBytes("UTF-8");
 731     }
 732
 733     private void validateWorkspaceForBaselineInitialization(Path workspaceLocation) throws PlatformException {
 734         try {
 735             Path db = workspaceLocation.resolve("db");
 736             if (Files.exists(db))
 737                 throw new PlatformException("Database location " + db + " already exists. Cannot re-initialize workspace from baseline.");
 738             Path index = workspaceLocation.resolve(".metadata/.plugins/org.simantics.db.indexing");
 739             if (!Files.exists(index) || !isEmptyDirectory(index))
 740                 throw new PlatformException("Index location " + index + " already exists. Cannot re-initialize workspace from baseline.");
 741         } catch (IOException e) {
 742             throw new PlatformException("Failed to validate workspace for baseline initialization", e);
 743         }
 744     }
 745
 746     private static boolean isEmptyDirectory(Path dir) throws IOException {
 747         return Files.walk(dir).count() == 1;
 748     }
 749
 750     private void validateBaselineFile(Path baseline) throws PlatformException {
 751         try (ZipFile zip = new ZipFile(baseline.toFile())) {
 752             ZipEntry db = zip.getEntry("db");
 753             if (db == null)
 754                throw new PlatformException("Baseline archive does not contain database directory 'db'");
 755             ZipEntry index = zip.getEntry(".metadata/.plugins/org.simantics.db.indexing");
 756             if (index == null)
 757                 throw new PlatformException("Baseline archive does not contain database index directory '.metadata/.plugins/org.simantics.db.indexing'");
 758         } catch (IOException e) {
 759             throw new PlatformException("Failed to validate baseline archive " + baseline, e);
 760         }
 761     }
 762
 763     /**
 764      * Start-up the platform. The procedure consists of 8 steps. Once everything
 765      * is up and running, all fields are set property.
 766      * <p>
 767      *
 768      * If workspacePolicy is FixErrors, there is an attempt to fix unexpected
 769      * errors. It includes installing database files, installing ontologies, and
 770      * installing project features.
 771      * <p>
 772      *
 773      * In Simantics Workbench this is handled in
 774      * <code>SimanticsWorkbenchAdvisor#openWindows()</code>.
 775      * <p>
 776      *
 777      * If remote server is given, simantics plaform takes connection there
 778      * instead of local server at "db/".
 779      *
 780      * @param workspacePolicy action to take on workspace/database related
 781      *        errors
 782      * @param ontologyPolicy action to take on ontology mismatch
 783      * @param progressMonitor optional progress monitor
 784      * @param userAgent interface for resorting to user feedback during platform
 785      *        startup or <code>null</code> to resort to default measures
 786      * @throws PlatformException
 787      */
 788     public synchronized SessionContext startUp(String databaseDriverId, IProgressMonitor progressMonitor, RecoveryPolicy workspacePolicy,
 789             OntologyRecoveryPolicy ontologyPolicy, boolean requireSynchronize, PlatformUserAgent userAgent)
 790     throws PlatformException
 791     {
 792
 793         assert(!running);
 794         TimeLogger.log("Beginning of SimanticsPlatform.startUp");
 795
 796         LOGGER.info("Beginning of SimanticsPlatform.startUp");
 797
 798         if (progressMonitor == null) progressMonitor = new NullProgressMonitor();
 799
 800         // For debugging on what kind of platform automatic tests are running in
 801         // case there are problems.
 802         if ("true".equals(System.getProperty("org.simantics.dumpBundleState")))
 803             dumpPlatformBundleState();
 804
 805         // 0. Consult all startup extensions before doing anything with the workspace.
 806         StartupExtensions.consultStartupExtensions();
 807         TimeLogger.log("Consulted platform pre-startup extensions");
 808
 809         // 0.1. Clear all temporary files
 810         Simantics.clearTemporaryDirectory();
 811         TimeLogger.log("Cleared temporary directory");
 812
 813         // 0.2 Clear VariableRepository.repository static map which holds references to SessionImplDb
 814         VariableRepository.clear();
 815
 816         // 0.3 Handle baseline database before opening db
 817         boolean usingBaseline = handleBaselineDatabase();
 818
 819         // 1. Assert there is a database at <workspace>/db
 820         session = setupDatabase(databaseDriverId, progressMonitor, workspacePolicy, userAgent);
 821         TimeLogger.log("Database setup complete");
 822
 823         // 1.1
 824         XSupport support = session.getService(XSupport.class);
 825         if (support.rolledback()) {
 826             try {
 827                 DatabaseIndexing.deleteAllIndexes();
 828             } catch (IOException e) {
 829                 throw new PlatformException(e);
 830             }
 831         }
 832
 833         // 2. Assert all graphs, and correct versions, are installed to the database
 834         if(!usingBaseline) {
 835             synchronizeOntologies(progressMonitor, ontologyPolicy, requireSynchronize);
 836             TimeLogger.log("Synchronized ontologies");
 837         }
 838
 839         // 4. Assert simantics.cfg exists
 840         boolean installProject = assertConfiguration(progressMonitor,workspacePolicy);
 841
 842         // 5. Assert Project Resource is installed in the database
 843         installProject = assertProject(progressMonitor, workspacePolicy, installProject);
 844
 845         // 6. Install all features into project, if in debug mode
 846         updateInstalledGroups(progressMonitor, true); //installProject);
 847         TimeLogger.log("Installed all features into project");
 848
 849         // 7. Assert L0.Session in database for this session
 850         assertSessionModel(progressMonitor);
 851
 852         session.getService(XSupport.class).setServiceMode(false, false);
 853
 854         try {
 855             session.syncRequest((Write) graph -> {
 856                 QueryControl qc = graph.getService(QueryControl.class);
 857                 qc.flush(graph);
 858             });
 859             TimeLogger.log("Flushed queries");
 860         } catch (DatabaseException e) {
 861             LOGGER.error("Flushing queries failed.", e);
 862         }
 863         boolean loadProject = true;
 864         try {
 865
 866                 sessionContext = SimanticsPlatform.INSTANCE.createSessionContext(true);
 867                 // This must be before setSessionContext since some listeners might query this
 868             sessionContext.setHint(SimanticsKeys.KEY_PROJECT, SimanticsPlatform.INSTANCE.projectResource);
 869
 870             Simantics.setSessionContext(sessionContext);
 871
 872             // 1. Put ResourceBinding that throws an exception to General Bindings
 873             simanticsBindings = new SimanticsBindings( null );
 874             Bindings.classBindingFactory.addFactory( simanticsBindings );
 875
 876
 877             // 2. Create session-specific second Binding context (Databoard) and
 878             //    put that to Session as a service
 879             Session session = sessionContext.getSession();
 880             Databoard sessionDataboard = new Databoard();
 881             session.registerService(Databoard.class, sessionDataboard);
 882             simanticsBindings2 = new SimanticsBindings( session );
 883             sessionDataboard.classBindingFactory.addFactory( simanticsBindings2 );
 884
 885             // Register datatype bindings
 886             Bindings.defaultBindingFactory.getRepository().put(RGB.Integer.BINDING.type(), RGB.Integer.BINDING);
 887             Bindings.defaultBindingFactory.getRepository().put(Font.BINDING.type(), Font.BINDING);
 888
 889             if(loadProject) {
 890
 891                 TimeLogger.log("Load projects");
 892                 project = Projects.loadProject(sessionContext.getSession(), SimanticsPlatform.INSTANCE.projectResource);
 893
 894                 sessionContext.setHint(ProjectKeys.KEY_PROJECT, project);
 895                 TimeLogger.log("Loading projects complete");
 896
 897                 project.activate();
 898                 TimeLogger.log("Project activated");
 899             }
 900
 901         } catch (DatabaseException e) {
 902             LOGGER.error("Platform startup failed.", e);
 903             throw new PlatformException(e);
 904         } catch (ProjectException e) {
 905             boolean hasStackTrace = e.getStackTrace().length > 0;
 906             if (!hasStackTrace)
 907                 throw new PlatformException(e.getMessage(), hasStackTrace);
 908             throw new PlatformException(e, hasStackTrace);
 909         }
 910
 911         running = true;
 912
 913         // #7650: improve shutdown robustness in all applications that use the platform
 914         Runtime.getRuntime().addShutdownHook(shutdownHook);
 915
 916         // Discard database session undo history at this point to prevent
 917         // the user from undoing any initialization operations performed
 918         // by the platform startup.
 919         SimanticsPlatform.INSTANCE.discardSessionUndoHistory();
 920         TimeLogger.log("Discarded session undo history");
 921
 922         return sessionContext;
 923
 924     }
 925
 926     public SessionContext createSessionContext(boolean init) throws PlatformException {
 927         try {
 928             // Construct and initialize SessionContext from Session.
 929             SessionContext sessionContext = SessionContext.create(session, init);
 930             TimeLogger.log("Session context created");
 931             if (init) {
 932                 sessionContext.registerServices();
 933                 TimeLogger.log("Session services registered");
 934             }
 935             return sessionContext;
 936         } catch (DatabaseException e) {
 937             throw new PlatformException(e);
 938         }
 939     }
 940
 941     /**
 942      * Perform normal shutdown for the Simantics Platform.
 943      *
 944      * @param progressMonitor optional progress monitor
 945      * @throws PlatformException
 946      * @see {@link #shutdown(IProgressMonitor, boolean)}
 947      */
 948     public synchronized void shutdown(IProgressMonitor progressMonitor) throws PlatformException {
 949         shutdown(progressMonitor, true);
 950     }
 951
 952     /**
 953      * Shutdown Simantics Platform.
 954      *
 955      * In Simantics Workbench this is handled in
 956      * <code>SimanticsWorkbenchAdvisor#disconnectFromWorkspace</code>.
 957      *
 958      * @param progressMonitor
 959      *            optional progress monitor
 960      * @param clearTemporaryFiles
 961      *            allow or prevent deletion of temporary files at the end of the
 962      *            shutdown procedure
 963      * @throws PlatformException
 964      */
 965     public synchronized void shutdown(IProgressMonitor progressMonitor, boolean clearTemporaryFiles) throws PlatformException
 966     {
 967         SubMonitor progress = SubMonitor.convert(progressMonitor, 100);
 968         PlatformException platformException = null;
 969         try {
 970             progress.subTask("Close Project");
 971             if (project != null) {
 972                 project.safeDispose();
 973             }
 974             progress.worked(10);
 975
 976             running = false;
 977             progress.subTask("Close Database Session");
 978             Databoard databoard = null;
 979             if (sessionContext != null) {
 980                 Session s = sessionContext.peekSession();
 981                 if (s != null) {
 982                     databoard = s.peekService(Databoard.class);
 983
 984                     progress.subTask("Flushing Index Caches");
 985                     try {
 986                         Simantics.flushIndexCaches(progress.newChild(20), s);
 987                     } catch (Throwable t) {
 988                         LOGGER.error("Failed to flush index caches.", t);
 989                     }
 990                 }
 991
 992                 progress.subTask("Close Database Session");
 993                 sessionContext.safeDispose();
 994                 sessionContext = null;
 995                 Simantics.setSessionContext(null);
 996             }
 997             if (simanticsBindings != null) {
 998                 Bindings.classBindingFactory.removeFactory( simanticsBindings );
 999                 simanticsBindings = null;
1000             }
1001             if (databoard != null) {
1002                 if (simanticsBindings2 != null) {
1003                         databoard.classBindingFactory.removeFactory( simanticsBindings2 );
1004                         simanticsBindings2 = null;
1005                 }
1006                 databoard.clear();
1007             }
1008
1009             // Make sure Simantics clipboard doesn't store unwanted session data references.
1010             Simantics.setClipboard(new SimanticsClipboardImpl());
1011
1012             progress.worked(30);
1013
1014             session = null;
1015             projectResource = null;
1016             currentDatabaseDriver = null;
1017
1018             DependenciesRelation.assertFinishedTracking();
1019
1020         } catch (Exception e) {
1021             platformException = new PlatformException("Failed to shutdown Simantics Platform", e);
1022         }
1023
1024         progress.worked(10);
1025         progress.subTask("Shutting down database");
1026         try {
1027             if (null != databasebManagement)
1028                 databasebManagement.shutdown();
1029         } catch (Throwable t) {
1030             LOGGER.error("Database shutdown failed.", t);
1031         }
1032         progress.worked(10);
1033
1034         if (clearTemporaryFiles) {
1035             progress.subTask("Clearing Workspace Temporary Directory");
1036             try {
1037                 Simantics.clearTemporaryDirectory();
1038             } catch (Throwable t) {
1039                 LOGGER.error("Failed to clear the temporary directory.", t);
1040             }
1041         }
1042         progress.worked(10);
1043         if (null != platformException)
1044             throw platformException;
1045
1046         // #7650: improve shutdown robustness in all applications that use the platform
1047         Runtime.getRuntime().removeShutdownHook(shutdownHook);
1048     }
1049
1050     // TODO: consider removing this in the future ??
1051     @Override
1052     public void stateChanged(LifecycleState newState) {
1053         if(newState == LifecycleState.CLOSED) {
1054             if(running) {
1055                 if(Platform.isRunning()) {
1056                     mainThread.interrupt();
1057                 }
1058             }
1059         }
1060     }
1061
1062     /**
1063      * @return <code>true</code> if discard was successful, <code>false</code>
1064      *         if there was no session, {@link UndoRedoSupport} or
1065      *         {@link UndoContext} to discard through
1066      */
1067     public boolean discardSessionUndoHistory() {
1068         Session s = session;
1069         if (s != null) {
1070             UndoRedoSupport urs = s.peekService(UndoRedoSupport.class);
1071             if (urs != null) {
1072                 UndoContext uc = urs.getUndoContext(s);
1073                 if (uc != null) {
1074                     uc.clear();
1075                     return true;
1076                 }
1077             }
1078         }
1079         return false;
1080     }
1081
1082     public void reconnect(String databaseDriverId) throws Exception {
1083         // Starts database server.
1084         if (currentDatabaseDriver != null)
1085             databaseDriverId = currentDatabaseDriver;
1086         SimanticsPlatform.INSTANCE.startUp(databaseDriverId, null, RecoveryPolicy.ThrowError, OntologyRecoveryPolicy.ThrowError, true, null);
1087     }
1088
1089     private void dumpPlatformBundleState() {
1090         BundleDescription[] bs = Platform.getPlatformAdmin().getState().getBundles();
1091         System.out.println("Total bundles: " + bs.length);
1092         for (BundleDescription b : bs) {
1093             System.out.format("%-80s @ %s\n", b.toString(), b.getLocation());
1094         }
1095     }
1096
1097     private Ini loadOrCreateDatabaseIni(Path path, String databaseDriverId)
1098             throws InvalidFileFormatException, IOException
1099     {
1100         File f = path.toFile();
1101         Ini dbIni = Files.isRegularFile(path) ? new Ini(f) : new Ini();
1102         String iniId = dbIni != null ? dbIni.get("driver", "id") : null;
1103         if (iniId == null) {
1104             dbIni.put("driver", "id", databaseDriverId);
1105             dbIni.store(f);
1106         }
1107         return dbIni;
1108     }
1109
1110 }