src/main/java/de/todesbaum/jsite/application/ProjectInserter.java

   1 /*
   2  * jSite - ProjectInserter.java - Copyright © 2006–2012 David Roden
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17  */
  18
  19 package de.todesbaum.jsite.application;
  20
  21 import java.io.File;
  22 import java.io.FileInputStream;
  23 import java.io.IOException;
  24 import java.io.InputStream;
  25 import java.util.ArrayList;
  26 import java.util.Arrays;
  27 import java.util.HashSet;
  28 import java.util.Iterator;
  29 import java.util.List;
  30 import java.util.Map;
  31 import java.util.Map.Entry;
  32 import java.util.Set;
  33 import java.util.concurrent.CountDownLatch;
  34 import java.util.logging.Level;
  35 import java.util.logging.Logger;
  36
  37 import net.pterodactylus.util.io.StreamCopier.ProgressListener;
  38 import de.todesbaum.jsite.gui.FileScanner;
  39 import de.todesbaum.jsite.gui.FileScanner.ScannedFile;
  40 import de.todesbaum.jsite.gui.FileScannerListener;
  41 import de.todesbaum.util.freenet.fcp2.Client;
  42 import de.todesbaum.util.freenet.fcp2.ClientPutComplexDir;
  43 import de.todesbaum.util.freenet.fcp2.ClientPutDir.ManifestPutter;
  44 import de.todesbaum.util.freenet.fcp2.Connection;
  45 import de.todesbaum.util.freenet.fcp2.DirectFileEntry;
  46 import de.todesbaum.util.freenet.fcp2.FileEntry;
  47 import de.todesbaum.util.freenet.fcp2.Message;
  48 import de.todesbaum.util.freenet.fcp2.PriorityClass;
  49 import de.todesbaum.util.freenet.fcp2.RedirectFileEntry;
  50 import de.todesbaum.util.freenet.fcp2.Verbosity;
  51
  52 /**
  53  * Manages project inserts.
  54  *
  55  * @author David ‘Bombe’ Roden &lt;bombe@freenetproject.org&gt;
  56  */
  57 public class ProjectInserter implements FileScannerListener, Runnable {
  58
  59         /** The logger. */
  60         private static final Logger logger = Logger.getLogger(ProjectInserter.class.getName());
  61
  62         /** Random number for FCP instances. */
  63         private static final int random = (int) (Math.random() * Integer.MAX_VALUE);
  64
  65         /** Counter for FCP connection identifier. */
  66         private static int counter = 0;
  67
  68         /** The list of insert listeners. */
  69         private List<InsertListener> insertListeners = new ArrayList<InsertListener>();
  70
  71         /** The freenet interface. */
  72         protected Freenet7Interface freenetInterface;
  73
  74         /** The project to insert. */
  75         protected Project project;
  76
  77         /** The file scanner. */
  78         private FileScanner fileScanner;
  79
  80         /** Object used for synchronization. */
  81         protected final Object lockObject = new Object();
  82
  83         /** The temp directory. */
  84         private String tempDirectory;
  85
  86         /** The current connection. */
  87         private Connection connection;
  88
  89         /** Whether the insert is cancelled. */
  90         private volatile boolean cancelled = false;
  91
  92         /** Progress listener for payload transfers. */
  93         private ProgressListener progressListener;
  94
  95         /** Whether to use “early encode.” */
  96         private boolean useEarlyEncode;
  97
  98         /** The insert priority. */
  99         private PriorityClass priority;
 100
 101         /** The manifest putter. */
 102         private ManifestPutter manifestPutter;
 103
 104         /**
 105          * Adds a listener to the list of registered listeners.
 106          *
 107          * @param insertListener
 108          *            The listener to add
 109          */
 110         public void addInsertListener(InsertListener insertListener) {
 111                 insertListeners.add(insertListener);
 112         }
 113
 114         /**
 115          * Removes a listener from the list of registered listeners.
 116          *
 117          * @param insertListener
 118          *            The listener to remove
 119          */
 120         public void removeInsertListener(InsertListener insertListener) {
 121                 insertListeners.remove(insertListener);
 122         }
 123
 124         /**
 125          * Notifies all listeners that the project insert has started.
 126          *
 127          * @see InsertListener#projectInsertStarted(Project)
 128          */
 129         protected void fireProjectInsertStarted() {
 130                 for (InsertListener insertListener : insertListeners) {
 131                         insertListener.projectInsertStarted(project);
 132                 }
 133         }
 134
 135         /**
 136          * Notifies all listeners that the insert has generated a URI.
 137          *
 138          * @see InsertListener#projectURIGenerated(Project, String)
 139          * @param uri
 140          *            The generated URI
 141          */
 142         protected void fireProjectURIGenerated(String uri) {
 143                 for (InsertListener insertListener : insertListeners) {
 144                         insertListener.projectURIGenerated(project, uri);
 145                 }
 146         }
 147
 148         /**
 149          * Notifies all listeners that the insert has made some progress.
 150          *
 151          * @see InsertListener#projectUploadFinished(Project)
 152          */
 153         protected void fireProjectUploadFinished() {
 154                 for (InsertListener insertListener : insertListeners) {
 155                         insertListener.projectUploadFinished(project);
 156                 }
 157         }
 158
 159         /**
 160          * Notifies all listeners that the insert has made some progress.
 161          *
 162          * @see InsertListener#projectInsertProgress(Project, int, int, int, int,
 163          *      boolean)
 164          * @param succeeded
 165          *            The number of succeeded blocks
 166          * @param failed
 167          *            The number of failed blocks
 168          * @param fatal
 169          *            The number of fatally failed blocks
 170          * @param total
 171          *            The total number of blocks
 172          * @param finalized
 173          *            <code>true</code> if the total number of blocks has already
 174          *            been finalized, <code>false</code> otherwise
 175          */
 176         protected void fireProjectInsertProgress(int succeeded, int failed, int fatal, int total, boolean finalized) {
 177                 for (InsertListener insertListener : insertListeners) {
 178                         insertListener.projectInsertProgress(project, succeeded, failed, fatal, total, finalized);
 179                 }
 180         }
 181
 182         /**
 183          * Notifies all listeners the project insert has finished.
 184          *
 185          * @see InsertListener#projectInsertFinished(Project, boolean, Throwable)
 186          * @param success
 187          *            <code>true</code> if the project was inserted successfully,
 188          *            <code>false</code> if it failed
 189          * @param cause
 190          *            The cause of the failure, if any
 191          */
 192         protected void fireProjectInsertFinished(boolean success, Throwable cause) {
 193                 for (InsertListener insertListener : insertListeners) {
 194                         insertListener.projectInsertFinished(project, success, cause);
 195                 }
 196         }
 197
 198         /**
 199          * Sets the project to insert.
 200          *
 201          * @param project
 202          *            The project to insert
 203          */
 204         public void setProject(Project project) {
 205                 this.project = project;
 206         }
 207
 208         /**
 209          * Sets the freenet interface to use.
 210          *
 211          * @param freenetInterface
 212          *            The freenet interface to use
 213          */
 214         public void setFreenetInterface(Freenet7Interface freenetInterface) {
 215                 this.freenetInterface = freenetInterface;
 216         }
 217
 218         /**
 219          * Sets the temp directory to use.
 220          *
 221          * @param tempDirectory
 222          *            The temp directory to use, or {@code null} to use the system
 223          *            default
 224          */
 225         public void setTempDirectory(String tempDirectory) {
 226                 this.tempDirectory = tempDirectory;
 227         }
 228
 229         /**
 230          * Sets whether to use the “early encode“ flag for the insert.
 231          *
 232          * @param useEarlyEncode
 233          *            {@code true} to set the “early encode” flag for the insert,
 234          *            {@code false} otherwise
 235          */
 236         public void setUseEarlyEncode(boolean useEarlyEncode) {
 237                 this.useEarlyEncode = useEarlyEncode;
 238         }
 239
 240         /**
 241          * Sets the insert priority.
 242          *
 243          * @param priority
 244          *            The insert priority
 245          */
 246         public void setPriority(PriorityClass priority) {
 247                 this.priority = priority;
 248         }
 249
 250         /**
 251          * Sets the manifest putter to use for inserts.
 252          *
 253          * @param manifestPutter
 254          *            The manifest putter to use
 255          */
 256         public void setManifestPutter(ManifestPutter manifestPutter) {
 257                 this.manifestPutter = manifestPutter;
 258         }
 259
 260         /**
 261          * Starts the insert.
 262          *
 263          * @param progressListener
 264          *            Listener to notify on progress events
 265          */
 266         public void start(ProgressListener progressListener) {
 267                 cancelled = false;
 268                 this.progressListener = progressListener;
 269                 fileScanner = new FileScanner(project);
 270                 fileScanner.addFileScannerListener(this);
 271                 new Thread(fileScanner).start();
 272         }
 273
 274         /**
 275          * Stops the current insert.
 276          */
 277         public void stop() {
 278                 cancelled = true;
 279                 synchronized (lockObject) {
 280                         if (connection != null) {
 281                                 connection.disconnect();
 282                         }
 283                 }
 284         }
 285
 286         /**
 287          * Creates an input stream that delivers the given file, replacing edition
 288          * tokens in the file’s content, if necessary.
 289          *
 290          * @param filename
 291          *            The name of the file
 292          * @param fileOption
 293          *            The file options
 294          * @param edition
 295          *            The current edition
 296          * @param length
 297          *            An array containing a single long which is used to
 298          *            <em>return</em> the final length of the file, after all
 299          *            replacements
 300          * @return The input stream for the file
 301          * @throws IOException
 302          *             if an I/O error occurs
 303          */
 304         private InputStream createFileInputStream(String filename, FileOption fileOption, int edition, long[] length) throws IOException {
 305                 File file = new File(project.getLocalPath(), filename);
 306                 length[0] = file.length();
 307                 return new FileInputStream(file);
 308         }
 309
 310         /**
 311          * Creates a file entry suitable for handing in to
 312          * {@link ClientPutComplexDir#addFileEntry(FileEntry)}.
 313          *
 314          * @param file
 315          *            The name and hash of the file to insert
 316          * @param edition
 317          *            The current edition
 318          * @return A file entry for the given file
 319          */
 320         private FileEntry createFileEntry(ScannedFile file, int edition) {
 321                 FileEntry fileEntry = null;
 322                 String filename = file.getFilename();
 323                 FileOption fileOption = project.getFileOption(filename);
 324                 if (fileOption.isInsert()) {
 325                         fileOption.setCurrentHash(file.getHash());
 326                         /* check if file was modified. */
 327                         if (!fileOption.isForceInsert() && file.getHash().equals(fileOption.getLastInsertHash())) {
 328                                 /* only insert a redirect. */
 329                                 logger.log(Level.FINE, String.format("Inserting redirect to edition %d for %s.", fileOption.getLastInsertEdition(), filename));
 330                                 return new RedirectFileEntry(fileOption.hasChangedName() ? fileOption.getChangedName() : filename, fileOption.getMimeType(), "SSK@" + project.getRequestURI() + "/" + project.getPath() + "-" + fileOption.getLastInsertEdition() + "/" + fileOption.getLastInsertFilename());
 331                         }
 332                         try {
 333                                 long[] fileLength = new long[1];
 334                                 InputStream fileEntryInputStream = createFileInputStream(filename, fileOption, edition, fileLength);
 335                                 fileEntry = new DirectFileEntry(fileOption.hasChangedName() ? fileOption.getChangedName() : filename, fileOption.getMimeType(), fileEntryInputStream, fileLength[0]);
 336                         } catch (IOException ioe1) {
 337                                 /* ignore, null is returned. */
 338                         }
 339                 } else {
 340                         if (fileOption.isInsertRedirect()) {
 341                                 fileEntry = new RedirectFileEntry(fileOption.hasChangedName() ? fileOption.getChangedName() : filename, fileOption.getMimeType(), fileOption.getCustomKey());
 342                         }
 343                 }
 344                 return fileEntry;
 345         }
 346
 347         /**
 348          * Validates the given project. The project will be checked for any invalid
 349          * conditions, such as invalid insert or request keys, missing path names,
 350          * missing default file, and so on.
 351          *
 352          * @param project
 353          *            The project to check
 354          * @return The encountered warnings and errors
 355          */
 356         public static CheckReport validateProject(Project project) {
 357                 CheckReport checkReport = new CheckReport();
 358                 if ((project.getLocalPath() == null) || (project.getLocalPath().trim().length() == 0)) {
 359                         checkReport.addIssue("error.no-local-path", true);
 360                 }
 361                 if ((project.getPath() == null) || (project.getPath().trim().length() == 0)) {
 362                         checkReport.addIssue("error.no-path", true);
 363                 }
 364                 if ((project.getIndexFile() == null) || (project.getIndexFile().length() == 0)) {
 365                         checkReport.addIssue("warning.empty-index", false);
 366                 } else {
 367                         File indexFile = new File(project.getLocalPath(), project.getIndexFile());
 368                         if (!indexFile.exists()) {
 369                                 checkReport.addIssue("error.index-missing", true);
 370                         }
 371                 }
 372                 String indexFile = project.getIndexFile();
 373                 boolean hasIndexFile = (indexFile != null) && (indexFile.length() > 0);
 374                 List<String> allowedIndexContentTypes = Arrays.asList("text/html", "application/xhtml+xml");
 375                 if (hasIndexFile && !allowedIndexContentTypes.contains(project.getFileOption(indexFile).getMimeType())) {
 376                         checkReport.addIssue("warning.index-not-html", false);
 377                 }
 378                 Map<String, FileOption> fileOptions = project.getFileOptions();
 379                 Set<Entry<String, FileOption>> fileOptionEntries = fileOptions.entrySet();
 380                 boolean insert = fileOptionEntries.isEmpty();
 381                 for (Entry<String, FileOption> fileOptionEntry : fileOptionEntries) {
 382                         String fileName = fileOptionEntry.getKey();
 383                         FileOption fileOption = fileOptionEntry.getValue();
 384                         insert |= fileOption.isInsert() || fileOption.isInsertRedirect();
 385                         if (fileName.equals(project.getIndexFile()) && !fileOption.isInsert() && !fileOption.isInsertRedirect()) {
 386                                 checkReport.addIssue("error.index-not-inserted", true);
 387                         }
 388                         if (!fileOption.isInsert() && fileOption.isInsertRedirect() && ((fileOption.getCustomKey().length() == 0) || "CHK@".equals(fileOption.getCustomKey()))) {
 389                                 checkReport.addIssue("error.no-custom-key", true, fileName);
 390                         }
 391                 }
 392                 if (!insert) {
 393                         checkReport.addIssue("error.no-files-to-insert", true);
 394                 }
 395                 Set<String> fileNames = new HashSet<String>();
 396                 for (Entry<String, FileOption> fileOptionEntry : fileOptionEntries) {
 397                         FileOption fileOption = fileOptionEntry.getValue();
 398                         if (!fileOption.isInsert() && !fileOption.isInsertRedirect()) {
 399                                 logger.log(Level.FINEST, "Ignoring {0}.", fileOptionEntry.getKey());
 400                                 continue;
 401                         }
 402                         String fileName = fileOptionEntry.getKey();
 403                         if (fileOption.hasChangedName()) {
 404                                 fileName = fileOption.getChangedName();
 405                         }
 406                         logger.log(Level.FINEST, "Adding “{0}” for {1}.", new Object[] { fileName, fileOptionEntry.getKey() });
 407                         if (!fileNames.add(fileName)) {
 408                                 checkReport.addIssue("error.duplicate-file", true, fileName);
 409                         }
 410                 }
 411                 long totalSize = 0;
 412                 FileScanner fileScanner = new FileScanner(project);
 413                 final CountDownLatch completionLatch = new CountDownLatch(1);
 414                 fileScanner.addFileScannerListener(new FileScannerListener() {
 415
 416                         @Override
 417                         public void fileScannerFinished(FileScanner fileScanner) {
 418                                 completionLatch.countDown();
 419                         }
 420                 });
 421                 new Thread(fileScanner).start();
 422                 while (completionLatch.getCount() > 0) {
 423                         try {
 424                                 completionLatch.await();
 425                         } catch (InterruptedException ie1) {
 426                                 /* TODO: logging */
 427                         }
 428                 }
 429                 for (ScannedFile scannedFile : fileScanner.getFiles()) {
 430                         String fileName = scannedFile.getFilename();
 431                         FileOption fileOption = project.getFileOption(fileName);
 432                         if ((fileOption != null) && !fileOption.isInsert()) {
 433                                 continue;
 434                         }
 435                         totalSize += new File(project.getLocalPath(), fileName).length();
 436                 }
 437                 if (totalSize > 2 * 1024 * 1024) {
 438                         checkReport.addIssue("warning.site-larger-than-2-mib", false);
 439                 }
 440                 return checkReport;
 441         }
 442
 443         /**
 444          * {@inheritDoc}
 445          */
 446         public void run() {
 447                 fireProjectInsertStarted();
 448                 List<ScannedFile> files = fileScanner.getFiles();
 449
 450                 /* create connection to node */
 451                 synchronized (lockObject) {
 452                         connection = freenetInterface.getConnection("project-insert-" + random + counter++);
 453                 }
 454                 connection.setTempDirectory(tempDirectory);
 455                 boolean connected = false;
 456                 Throwable cause = null;
 457                 try {
 458                         connected = connection.connect();
 459                 } catch (IOException e1) {
 460                         cause = e1;
 461                 }
 462
 463                 if (!connected || cancelled) {
 464                         fireProjectInsertFinished(false, cancelled ? new AbortedException() : cause);
 465                         return;
 466                 }
 467
 468                 Client client = new Client(connection);
 469
 470                 /* collect files */
 471                 int edition = project.getEdition();
 472                 String dirURI = "USK@" + project.getInsertURI() + "/" + project.getPath() + "/" + edition + "/";
 473                 ClientPutComplexDir putDir = new ClientPutComplexDir("dir-" + counter++, dirURI, tempDirectory);
 474                 if ((project.getIndexFile() != null) && (project.getIndexFile().length() > 0)) {
 475                         putDir.setDefaultName(project.getIndexFile());
 476                 }
 477                 putDir.setVerbosity(Verbosity.ALL);
 478                 putDir.setMaxRetries(-1);
 479                 putDir.setEarlyEncode(useEarlyEncode);
 480                 putDir.setPriorityClass(priority);
 481                 putDir.setManifestPutter(manifestPutter);
 482                 for (ScannedFile file : files) {
 483                         FileEntry fileEntry = createFileEntry(file, edition);
 484                         if (fileEntry != null) {
 485                                 try {
 486                                         putDir.addFileEntry(fileEntry);
 487                                 } catch (IOException ioe1) {
 488                                         fireProjectInsertFinished(false, ioe1);
 489                                         return;
 490                                 }
 491                         }
 492                 }
 493
 494                 /* start request */
 495                 try {
 496                         client.execute(putDir, progressListener);
 497                         fireProjectUploadFinished();
 498                 } catch (IOException ioe1) {
 499                         fireProjectInsertFinished(false, ioe1);
 500                         return;
 501                 }
 502
 503                 /* parse progress and success messages */
 504                 String finalURI = null;
 505                 boolean success = false;
 506                 boolean finished = false;
 507                 boolean disconnected = false;
 508                 while (!finished && !cancelled) {
 509                         Message message = client.readMessage();
 510                         finished = (message == null) || (disconnected = client.isDisconnected());
 511                         logger.log(Level.FINE, "Received message: " + message);
 512                         if (!finished) {
 513                                 @SuppressWarnings("null")
 514                                 String messageName = message.getName();
 515                                 if ("URIGenerated".equals(messageName)) {
 516                                         finalURI = message.get("URI");
 517                                         fireProjectURIGenerated(finalURI);
 518                                 }
 519                                 if ("SimpleProgress".equals(messageName)) {
 520                                         int total = Integer.parseInt(message.get("Total"));
 521                                         int succeeded = Integer.parseInt(message.get("Succeeded"));
 522                                         int fatal = Integer.parseInt(message.get("FatallyFailed"));
 523                                         int failed = Integer.parseInt(message.get("Failed"));
 524                                         boolean finalized = Boolean.parseBoolean(message.get("FinalizedTotal"));
 525                                         fireProjectInsertProgress(succeeded, failed, fatal, total, finalized);
 526                                 }
 527                                 success |= "PutSuccessful".equals(messageName);
 528                                 finished = (success && (finalURI != null)) || "PutFailed".equals(messageName) || messageName.endsWith("Error");
 529                         }
 530                 }
 531
 532                 /* post-insert work */
 533                 if (success) {
 534                         @SuppressWarnings("null")
 535                         String editionPart = finalURI.substring(finalURI.lastIndexOf('/') + 1);
 536                         int newEdition = Integer.parseInt(editionPart);
 537                         project.setEdition(newEdition);
 538                         project.setLastInsertionTime(System.currentTimeMillis());
 539                         project.onSuccessfulInsert();
 540                 }
 541                 fireProjectInsertFinished(success, cancelled ? new AbortedException() : (disconnected ? new IOException("Connection terminated") : null));
 542         }
 543
 544         //
 545         // INTERFACE FileScannerListener
 546         //
 547
 548         /**
 549          * {@inheritDoc}
 550          */
 551         public void fileScannerFinished(FileScanner fileScanner) {
 552                 if (!fileScanner.isError()) {
 553                         new Thread(this).start();
 554                 } else {
 555                         fireProjectInsertFinished(false, null);
 556                 }
 557                 fileScanner.removeFileScannerListener(this);
 558         }
 559
 560         /**
 561          * Container class that collects all warnings and errors that occured during
 562          * {@link ProjectInserter#validateProject(Project) project validation}.
 563          *
 564          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 565          */
 566         public static class CheckReport implements Iterable<Issue> {
 567
 568                 /** The issures that occured. */
 569                 private final List<Issue> issues = new ArrayList<Issue>();
 570
 571                 /**
 572                  * Adds an issue.
 573                  *
 574                  * @param issue
 575                  *            The issue to add
 576                  */
 577                 public void addIssue(Issue issue) {
 578                         issues.add(issue);
 579                 }
 580
 581                 /**
 582                  * Creates an {@link Issue} from the given error key and fatality flag
 583                  * and {@link #addIssue(Issue) adds} it.
 584                  *
 585                  * @param errorKey
 586                  *            The error key
 587                  * @param fatal
 588                  *            {@code true} if the error is fatal, {@code false} if only
 589                  *            a warning should be generated
 590                  * @param parameters
 591                  *            Any additional parameters
 592                  */
 593                 public void addIssue(String errorKey, boolean fatal, String... parameters) {
 594                         addIssue(new Issue(errorKey, fatal, parameters));
 595                 }
 596
 597                 /**
 598                  * {@inheritDoc}
 599                  */
 600                 public Iterator<Issue> iterator() {
 601                         return issues.iterator();
 602                 }
 603
 604                 /**
 605                  * Returns whether this check report does not contain any errors.
 606                  *
 607                  * @return {@code true} if this check report does not contain any
 608                  *         errors, {@code false} if this check report does contain
 609                  *         errors
 610                  */
 611                 public boolean isEmpty() {
 612                         return issues.isEmpty();
 613                 }
 614
 615                 /**
 616                  * Returns the number of issues in this check report.
 617                  *
 618                  * @return The number of issues
 619                  */
 620                 public int size() {
 621                         return issues.size();
 622                 }
 623
 624         }
 625
 626         /**
 627          * Container class for a single issue. An issue contains an error key
 628          * that describes the error, and a fatality flag that determines whether
 629          * the insert has to be aborted (if the flag is {@code true}) or if it
 630          * can still be performed and only a warning should be generated (if the
 631          * flag is {@code false}).
 632          *
 633          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’
 634          *         Roden</a>
 635          */
 636         public static class Issue {
 637
 638                 /** The error key. */
 639                 private final String errorKey;
 640
 641                 /** The fatality flag. */
 642                 private final boolean fatal;
 643
 644                 /** Additional parameters. */
 645                 private String[] parameters;
 646
 647                 /**
 648                  * Creates a new issue.
 649                  *
 650                  * @param errorKey
 651                  *            The error key
 652                  * @param fatal
 653                  *            The fatality flag
 654                  * @param parameters
 655                  *            Any additional parameters
 656                  */
 657                 protected Issue(String errorKey, boolean fatal, String... parameters) {
 658                         this.errorKey = errorKey;
 659                         this.fatal = fatal;
 660                         this.parameters = parameters;
 661                 }
 662
 663                 /**
 664                  * Returns the key of the encountered error.
 665                  *
 666                  * @return The error key
 667                  */
 668                 public String getErrorKey() {
 669                         return errorKey;
 670                 }
 671
 672                 /**
 673                  * Returns whether the issue is fatal and the insert has to be
 674                  * aborted. Otherwise only a warning should be shown.
 675                  *
 676                  * @return {@code true} if the insert needs to be aborted, {@code
 677                  *         false} otherwise
 678                  */
 679                 public boolean isFatal() {
 680                         return fatal;
 681                 }
 682
 683                 /**
 684                  * Returns any additional parameters.
 685                  *
 686                  * @return The additional parameters
 687                  */
 688                 public String[] getParameters() {
 689                         return parameters;
 690                 }
 691
 692         }
 693
 694 }