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

   1 /*
   2  * jSite - ProjectInserter.java - Copyright © 2006–2011 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.Set;
  32 import java.util.Map.Entry;
  33 import java.util.logging.Level;
  34 import java.util.logging.Logger;
  35
  36 import de.todesbaum.jsite.gui.FileScanner;
  37 import de.todesbaum.jsite.gui.FileScanner.ScannedFile;
  38 import de.todesbaum.jsite.gui.FileScannerListener;
  39 import de.todesbaum.util.freenet.fcp2.Client;
  40 import de.todesbaum.util.freenet.fcp2.ClientPutComplexDir;
  41 import de.todesbaum.util.freenet.fcp2.ClientPutDir.ManifestPutter;
  42 import de.todesbaum.util.freenet.fcp2.Connection;
  43 import de.todesbaum.util.freenet.fcp2.DirectFileEntry;
  44 import de.todesbaum.util.freenet.fcp2.FileEntry;
  45 import de.todesbaum.util.freenet.fcp2.Message;
  46 import de.todesbaum.util.freenet.fcp2.RedirectFileEntry;
  47 import de.todesbaum.util.freenet.fcp2.Verbosity;
  48 import de.todesbaum.util.io.StreamCopier.ProgressListener;
  49
  50 /**
  51  * Manages project inserts.
  52  *
  53  * @author David ‘Bombe’ Roden &lt;bombe@freenetproject.org&gt;
  54  */
  55 public class ProjectInserter implements FileScannerListener, Runnable {
  56
  57         /** The logger. */
  58         private static final Logger logger = Logger.getLogger(ProjectInserter.class.getName());
  59
  60         /** Random number for FCP instances. */
  61         private static final int random = (int) (Math.random() * Integer.MAX_VALUE);
  62
  63         /** Counter for FCP connection identifier. */
  64         private static int counter = 0;
  65
  66         /** The list of insert listeners. */
  67         private List<InsertListener> insertListeners = new ArrayList<InsertListener>();
  68
  69         /** The freenet interface. */
  70         protected Freenet7Interface freenetInterface;
  71
  72         /** The project to insert. */
  73         protected Project project;
  74
  75         /** The file scanner. */
  76         private FileScanner fileScanner;
  77
  78         /** Object used for synchronization. */
  79         protected final Object lockObject = new Object();
  80
  81         /** The temp directory. */
  82         private String tempDirectory;
  83
  84         /** The current connection. */
  85         private Connection connection;
  86
  87         /** Whether the insert is cancelled. */
  88         private volatile boolean cancelled = false;
  89
  90         /** Progress listener for payload transfers. */
  91         private ProgressListener progressListener;
  92
  93         /**
  94          * Adds a listener to the list of registered listeners.
  95          *
  96          * @param insertListener
  97          *            The listener to add
  98          */
  99         public void addInsertListener(InsertListener insertListener) {
 100                 insertListeners.add(insertListener);
 101         }
 102
 103         /**
 104          * Removes a listener from the list of registered listeners.
 105          *
 106          * @param insertListener
 107          *            The listener to remove
 108          */
 109         public void removeInsertListener(InsertListener insertListener) {
 110                 insertListeners.remove(insertListener);
 111         }
 112
 113         /**
 114          * Notifies all listeners that the project insert has started.
 115          *
 116          * @see InsertListener#projectInsertStarted(Project)
 117          */
 118         protected void fireProjectInsertStarted() {
 119                 for (InsertListener insertListener : insertListeners) {
 120                         insertListener.projectInsertStarted(project);
 121                 }
 122         }
 123
 124         /**
 125          * Notifies all listeners that the insert has generated a URI.
 126          *
 127          * @see InsertListener#projectURIGenerated(Project, String)
 128          * @param uri
 129          *            The generated URI
 130          */
 131         protected void fireProjectURIGenerated(String uri) {
 132                 for (InsertListener insertListener : insertListeners) {
 133                         insertListener.projectURIGenerated(project, uri);
 134                 }
 135         }
 136
 137         /**
 138          * Notifies all listeners that the insert has made some progress.
 139          *
 140          * @see InsertListener#projectUploadFinished(Project)
 141          */
 142         protected void fireProjectUploadFinished() {
 143                 for (InsertListener insertListener : insertListeners) {
 144                         insertListener.projectUploadFinished(project);
 145                 }
 146         }
 147
 148         /**
 149          * Notifies all listeners that the insert has made some progress.
 150          *
 151          * @see InsertListener#projectInsertProgress(Project, int, int, int, int,
 152          *      boolean)
 153          * @param succeeded
 154          *            The number of succeeded blocks
 155          * @param failed
 156          *            The number of failed blocks
 157          * @param fatal
 158          *            The number of fatally failed blocks
 159          * @param total
 160          *            The total number of blocks
 161          * @param finalized
 162          *            <code>true</code> if the total number of blocks has already
 163          *            been finalized, <code>false</code> otherwise
 164          */
 165         protected void fireProjectInsertProgress(int succeeded, int failed, int fatal, int total, boolean finalized) {
 166                 for (InsertListener insertListener : insertListeners) {
 167                         insertListener.projectInsertProgress(project, succeeded, failed, fatal, total, finalized);
 168                 }
 169         }
 170
 171         /**
 172          * Notifies all listeners the project insert has finished.
 173          *
 174          * @see InsertListener#projectInsertFinished(Project, boolean, Throwable)
 175          * @param success
 176          *            <code>true</code> if the project was inserted successfully,
 177          *            <code>false</code> if it failed
 178          * @param cause
 179          *            The cause of the failure, if any
 180          */
 181         protected void fireProjectInsertFinished(boolean success, Throwable cause) {
 182                 for (InsertListener insertListener : insertListeners) {
 183                         insertListener.projectInsertFinished(project, success, cause);
 184                 }
 185         }
 186
 187         /**
 188          * Sets the project to insert.
 189          *
 190          * @param project
 191          *            The project to insert
 192          */
 193         public void setProject(Project project) {
 194                 this.project = project;
 195         }
 196
 197         /**
 198          * Sets the freenet interface to use.
 199          *
 200          * @param freenetInterface
 201          *            The freenet interface to use
 202          */
 203         public void setFreenetInterface(Freenet7Interface freenetInterface) {
 204                 this.freenetInterface = freenetInterface;
 205         }
 206
 207         /**
 208          * Sets the temp directory to use.
 209          *
 210          * @param tempDirectory
 211          *            The temp directory to use, or {@code null} to use the system
 212          *            default
 213          */
 214         public void setTempDirectory(String tempDirectory) {
 215                 this.tempDirectory = tempDirectory;
 216         }
 217
 218         /**
 219          * Starts the insert.
 220          *
 221          * @param progressListener
 222          *            Listener to notify on progress events
 223          */
 224         public void start(ProgressListener progressListener) {
 225                 cancelled = false;
 226                 this.progressListener = progressListener;
 227                 fileScanner = new FileScanner(project);
 228                 fileScanner.addFileScannerListener(this);
 229                 new Thread(fileScanner).start();
 230         }
 231
 232         /**
 233          * Stops the current insert.
 234          */
 235         public void stop() {
 236                 cancelled = true;
 237                 synchronized (lockObject) {
 238                         if (connection != null) {
 239                                 connection.disconnect();
 240                         }
 241                 }
 242         }
 243
 244         /**
 245          * Creates an input stream that delivers the given file, replacing edition
 246          * tokens in the file’s content, if necessary.
 247          *
 248          * @param filename
 249          *            The name of the file
 250          * @param fileOption
 251          *            The file options
 252          * @param edition
 253          *            The current edition
 254          * @param length
 255          *            An array containing a single long which is used to
 256          *            <em>return</em> the final length of the file, after all
 257          *            replacements
 258          * @return The input stream for the file
 259          * @throws IOException
 260          *             if an I/O error occurs
 261          */
 262         private InputStream createFileInputStream(String filename, FileOption fileOption, int edition, long[] length) throws IOException {
 263                 File file = new File(project.getLocalPath(), filename);
 264                 length[0] = file.length();
 265                 return new FileInputStream(file);
 266         }
 267
 268         /**
 269          * Creates a file entry suitable for handing in to
 270          * {@link ClientPutComplexDir#addFileEntry(FileEntry)}.
 271          *
 272          * @param file
 273          *            The name and hash of the file to insert
 274          * @param edition
 275          *            The current edition
 276          * @return A file entry for the given file
 277          */
 278         private FileEntry createFileEntry(ScannedFile file, int edition) {
 279                 FileEntry fileEntry = null;
 280                 String filename = file.getFilename();
 281                 FileOption fileOption = project.getFileOption(filename);
 282                 if (fileOption.isInsert()) {
 283                         /* check if file was modified. */
 284                         if (file.getHash().equals(fileOption.getLastInsertHash())) {
 285                                 /* only insert a redirect. */
 286                                 return new RedirectFileEntry(filename, fileOption.getMimeType(), "SSK@" + project.getRequestURI() + "/" + project.getPath() + "-" + fileOption.getLastInsertEdition() + "/" + filename);
 287                         }
 288                         fileOption.setCurrentHash(file.getHash());
 289                         try {
 290                                 long[] fileLength = new long[1];
 291                                 InputStream fileEntryInputStream = createFileInputStream(filename, fileOption, edition, fileLength);
 292                                 fileEntry = new DirectFileEntry(filename, fileOption.getMimeType(), fileEntryInputStream, fileLength[0]);
 293                         } catch (IOException ioe1) {
 294                                 /* ignore, null is returned. */
 295                         }
 296                 } else {
 297                         if (fileOption.isInsertRedirect()) {
 298                                 fileEntry = new RedirectFileEntry(filename, fileOption.getMimeType(), fileOption.getCustomKey());
 299                         } else {
 300                                 fileOption.setLastInsertHash("");
 301                         }
 302                 }
 303                 return fileEntry;
 304         }
 305
 306         /**
 307          * Validates the given project. The project will be checked for any invalid
 308          * conditions, such as invalid insert or request keys, missing path names,
 309          * missing default file, and so on.
 310          *
 311          * @param project
 312          *            The project to check
 313          * @return The encountered warnings and errors
 314          */
 315         public static CheckReport validateProject(Project project) {
 316                 CheckReport checkReport = new CheckReport();
 317                 if ((project.getLocalPath() == null) || (project.getLocalPath().trim().length() == 0)) {
 318                         checkReport.addIssue("error.no-local-path", true);
 319                 }
 320                 if ((project.getPath() == null) || (project.getPath().trim().length() == 0)) {
 321                         checkReport.addIssue("error.no-path", true);
 322                 }
 323                 if ((project.getIndexFile() == null) || (project.getIndexFile().length() == 0)) {
 324                         checkReport.addIssue("warning.empty-index", false);
 325                 } else {
 326                         File indexFile = new File(project.getLocalPath(), project.getIndexFile());
 327                         if (!indexFile.exists()) {
 328                                 checkReport.addIssue("error.index-missing", true);
 329                         }
 330                 }
 331                 String indexFile = project.getIndexFile();
 332                 boolean hasIndexFile = (indexFile != null) && (indexFile.length() > 0);
 333                 List<String> allowedIndexContentTypes = Arrays.asList("text/html", "application/xhtml+xml");
 334                 if (hasIndexFile && !allowedIndexContentTypes.contains(project.getFileOption(indexFile).getMimeType())) {
 335                         checkReport.addIssue("warning.index-not-html", false);
 336                 }
 337                 Map<String, FileOption> fileOptions = project.getFileOptions();
 338                 Set<Entry<String, FileOption>> fileOptionEntries = fileOptions.entrySet();
 339                 boolean insert = fileOptionEntries.isEmpty();
 340                 for (Entry<String, FileOption> fileOptionEntry : fileOptionEntries) {
 341                         String fileName = fileOptionEntry.getKey();
 342                         FileOption fileOption = fileOptionEntry.getValue();
 343                         insert |= fileOption.isInsert() || fileOption.isInsertRedirect();
 344                         if (fileName.equals(project.getIndexFile()) && !fileOption.isInsert() && !fileOption.isInsertRedirect()) {
 345                                 checkReport.addIssue("error.index-not-inserted", true);
 346                         }
 347                         if (!fileOption.isInsert() && fileOption.isInsertRedirect() && ((fileOption.getCustomKey().length() == 0) || "CHK@".equals(fileOption.getCustomKey()))) {
 348                                 checkReport.addIssue("error.no-custom-key", true, fileName);
 349                         }
 350                 }
 351                 if (!insert) {
 352                         checkReport.addIssue("error.no-files-to-insert", true);
 353                 }
 354                 Set<String> fileNames = new HashSet<String>();
 355                 for (Entry<String, FileOption> fileOptionEntry : fileOptionEntries) {
 356                         FileOption fileOption = fileOptionEntry.getValue();
 357                         if (!fileOption.isInsert() && !fileOption.isInsertRedirect()) {
 358                                 logger.log(Level.FINEST, "Ignoring {0}.", fileOptionEntry.getKey());
 359                                 continue;
 360                         }
 361                         String fileName = fileOptionEntry.getKey();
 362                         if (fileOption.hasChangedName()) {
 363                                 fileName = fileOption.getChangedName();
 364                         }
 365                         logger.log(Level.FINEST, "Adding “{0}” for {1}.", new Object[] { fileName, fileOptionEntry.getKey() });
 366                         if (!fileNames.add(fileName)) {
 367                                 checkReport.addIssue("error.duplicate-file", true, fileName);
 368                         }
 369                 }
 370                 return checkReport;
 371         }
 372
 373         /**
 374          * {@inheritDoc}
 375          */
 376         public void run() {
 377                 fireProjectInsertStarted();
 378                 List<ScannedFile> files = fileScanner.getFiles();
 379
 380                 /* create connection to node */
 381                 synchronized (lockObject) {
 382                         connection = freenetInterface.getConnection("project-insert-" + random + counter++);
 383                 }
 384                 connection.setTempDirectory(tempDirectory);
 385                 boolean connected = false;
 386                 Throwable cause = null;
 387                 try {
 388                         connected = connection.connect();
 389                 } catch (IOException e1) {
 390                         cause = e1;
 391                 }
 392
 393                 if (!connected || cancelled) {
 394                         fireProjectInsertFinished(false, cancelled ? new AbortedException() : cause);
 395                         return;
 396                 }
 397
 398                 Client client = new Client(connection);
 399
 400                 /* collect files */
 401                 int edition = project.getEdition();
 402                 String dirURI = "USK@" + project.getInsertURI() + "/" + project.getPath() + "/" + edition + "/";
 403                 ClientPutComplexDir putDir = new ClientPutComplexDir("dir-" + counter++, dirURI, tempDirectory);
 404                 if ((project.getIndexFile() != null) && (project.getIndexFile().length() > 0)) {
 405                         putDir.setDefaultName(project.getIndexFile());
 406                 }
 407                 putDir.setVerbosity(Verbosity.ALL);
 408                 putDir.setMaxRetries(-1);
 409                 putDir.setEarlyEncode(false);
 410                 putDir.setManifestPutter(ManifestPutter.DEFAULT);
 411                 for (ScannedFile file : files) {
 412                         FileEntry fileEntry = createFileEntry(file, edition);
 413                         if (fileEntry != null) {
 414                                 try {
 415                                         putDir.addFileEntry(fileEntry);
 416                                 } catch (IOException ioe1) {
 417                                         fireProjectInsertFinished(false, ioe1);
 418                                         return;
 419                                 }
 420                         }
 421                 }
 422
 423                 /* start request */
 424                 try {
 425                         client.execute(putDir, progressListener);
 426                         fireProjectUploadFinished();
 427                 } catch (IOException ioe1) {
 428                         fireProjectInsertFinished(false, ioe1);
 429                         return;
 430                 }
 431
 432                 /* parse progress and success messages */
 433                 String finalURI = null;
 434                 boolean success = false;
 435                 boolean finished = false;
 436                 boolean disconnected = false;
 437                 while (!finished && !cancelled) {
 438                         Message message = client.readMessage();
 439                         finished = (message == null) || (disconnected = client.isDisconnected());
 440                         logger.log(Level.FINE, "Received message: " + message);
 441                         if (!finished) {
 442                                 @SuppressWarnings("null")
 443                                 String messageName = message.getName();
 444                                 if ("URIGenerated".equals(messageName)) {
 445                                         finalURI = message.get("URI");
 446                                         fireProjectURIGenerated(finalURI);
 447                                 }
 448                                 if ("SimpleProgress".equals(messageName)) {
 449                                         int total = Integer.parseInt(message.get("Total"));
 450                                         int succeeded = Integer.parseInt(message.get("Succeeded"));
 451                                         int fatal = Integer.parseInt(message.get("FatallyFailed"));
 452                                         int failed = Integer.parseInt(message.get("Failed"));
 453                                         boolean finalized = Boolean.parseBoolean(message.get("FinalizedTotal"));
 454                                         fireProjectInsertProgress(succeeded, failed, fatal, total, finalized);
 455                                 }
 456                                 success |= "PutSuccessful".equals(messageName);
 457                                 finished = (success && (finalURI != null)) || "PutFailed".equals(messageName) || messageName.endsWith("Error");
 458                         }
 459                 }
 460
 461                 /* post-insert work */
 462                 if (success) {
 463                         @SuppressWarnings("null")
 464                         String editionPart = finalURI.substring(finalURI.lastIndexOf('/') + 1);
 465                         int newEdition = Integer.parseInt(editionPart);
 466                         project.setEdition(newEdition);
 467                         project.setLastInsertionTime(System.currentTimeMillis());
 468                         project.copyHashes();
 469                 }
 470                 fireProjectInsertFinished(success, cancelled ? new AbortedException() : (disconnected ? new IOException("Connection terminated") : null));
 471         }
 472
 473         //
 474         // INTERFACE FileScannerListener
 475         //
 476
 477         /**
 478          * {@inheritDoc}
 479          */
 480         public void fileScannerFinished(FileScanner fileScanner) {
 481                 if (!fileScanner.isError()) {
 482                         new Thread(this).start();
 483                 } else {
 484                         fireProjectInsertFinished(false, null);
 485                 }
 486                 fileScanner.removeFileScannerListener(this);
 487         }
 488
 489         /**
 490          * Container class that collects all warnings and errors that occured during
 491          * {@link ProjectInserter#validateProject(Project) project validation}.
 492          *
 493          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 494          */
 495         public static class CheckReport implements Iterable<Issue> {
 496
 497                 /** The issures that occured. */
 498                 private final List<Issue> issues = new ArrayList<Issue>();
 499
 500                 /**
 501                  * Adds an issue.
 502                  *
 503                  * @param issue
 504                  *            The issue to add
 505                  */
 506                 public void addIssue(Issue issue) {
 507                         issues.add(issue);
 508                 }
 509
 510                 /**
 511                  * Creates an {@link Issue} from the given error key and fatality flag
 512                  * and {@link #addIssue(Issue) adds} it.
 513                  *
 514                  * @param errorKey
 515                  *            The error key
 516                  * @param fatal
 517                  *            {@code true} if the error is fatal, {@code false} if only
 518                  *            a warning should be generated
 519                  * @param parameters
 520                  *            Any additional parameters
 521                  */
 522                 public void addIssue(String errorKey, boolean fatal, String... parameters) {
 523                         addIssue(new Issue(errorKey, fatal, parameters));
 524                 }
 525
 526                 /**
 527                  * {@inheritDoc}
 528                  */
 529                 public Iterator<Issue> iterator() {
 530                         return issues.iterator();
 531                 }
 532
 533                 /**
 534                  * Returns whether this check report does not contain any errors.
 535                  *
 536                  * @return {@code true} if this check report does not contain any
 537                  *         errors, {@code false} if this check report does contain
 538                  *         errors
 539                  */
 540                 public boolean isEmpty() {
 541                         return issues.isEmpty();
 542                 }
 543
 544                 /**
 545                  * Returns the number of issues in this check report.
 546                  *
 547                  * @return The number of issues
 548                  */
 549                 public int size() {
 550                         return issues.size();
 551                 }
 552
 553         }
 554
 555         /**
 556          * Container class for a single issue. An issue contains an error key
 557          * that describes the error, and a fatality flag that determines whether
 558          * the insert has to be aborted (if the flag is {@code true}) or if it
 559          * can still be performed and only a warning should be generated (if the
 560          * flag is {@code false}).
 561          *
 562          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’
 563          *         Roden</a>
 564          */
 565         public static class Issue {
 566
 567                 /** The error key. */
 568                 private final String errorKey;
 569
 570                 /** The fatality flag. */
 571                 private final boolean fatal;
 572
 573                 /** Additional parameters. */
 574                 private String[] parameters;
 575
 576                 /**
 577                  * Creates a new issue.
 578                  *
 579                  * @param errorKey
 580                  *            The error key
 581                  * @param fatal
 582                  *            The fatality flag
 583                  * @param parameters
 584                  *            Any additional parameters
 585                  */
 586                 protected Issue(String errorKey, boolean fatal, String... parameters) {
 587                         this.errorKey = errorKey;
 588                         this.fatal = fatal;
 589                         this.parameters = parameters;
 590                 }
 591
 592                 /**
 593                  * Returns the key of the encountered error.
 594                  *
 595                  * @return The error key
 596                  */
 597                 public String getErrorKey() {
 598                         return errorKey;
 599                 }
 600
 601                 /**
 602                  * Returns whether the issue is fatal and the insert has to be
 603                  * aborted. Otherwise only a warning should be shown.
 604                  *
 605                  * @return {@code true} if the insert needs to be aborted, {@code
 606                  *         false} otherwise
 607                  */
 608                 public boolean isFatal() {
 609                         return fatal;
 610                 }
 611
 612                 /**
 613                  * Returns any additional parameters.
 614                  *
 615                  * @return The additional parameters
 616                  */
 617                 public String[] getParameters() {
 618                         return parameters;
 619                 }
 620
 621         }
 622
 623 }