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                         fileOption.setCurrentHash(file.getHash());
 284                         /* check if file was modified. */
 285                         if (file.getHash().equals(fileOption.getLastInsertHash())) {
 286                                 /* only insert a redirect. */
 287                                 logger.log(Level.FINE, String.format("Inserting redirect to edition %d for %s.", fileOption.getLastInsertEdition(), filename));
 288                                 return new RedirectFileEntry(filename, fileOption.getMimeType(), "SSK@" + project.getRequestURI() + "/" + project.getPath() + "-" + fileOption.getLastInsertEdition() + "/" + filename);
 289                         }
 290                         try {
 291                                 long[] fileLength = new long[1];
 292                                 InputStream fileEntryInputStream = createFileInputStream(filename, fileOption, edition, fileLength);
 293                                 fileEntry = new DirectFileEntry(filename, fileOption.getMimeType(), fileEntryInputStream, fileLength[0]);
 294                         } catch (IOException ioe1) {
 295                                 /* ignore, null is returned. */
 296                         }
 297                 } else {
 298                         if (fileOption.isInsertRedirect()) {
 299                                 fileEntry = new RedirectFileEntry(filename, fileOption.getMimeType(), fileOption.getCustomKey());
 300                         } else {
 301                                 fileOption.setLastInsertHash("");
 302                         }
 303                 }
 304                 return fileEntry;
 305         }
 306
 307         /**
 308          * Validates the given project. The project will be checked for any invalid
 309          * conditions, such as invalid insert or request keys, missing path names,
 310          * missing default file, and so on.
 311          *
 312          * @param project
 313          *            The project to check
 314          * @return The encountered warnings and errors
 315          */
 316         public static CheckReport validateProject(Project project) {
 317                 CheckReport checkReport = new CheckReport();
 318                 if ((project.getLocalPath() == null) || (project.getLocalPath().trim().length() == 0)) {
 319                         checkReport.addIssue("error.no-local-path", true);
 320                 }
 321                 if ((project.getPath() == null) || (project.getPath().trim().length() == 0)) {
 322                         checkReport.addIssue("error.no-path", true);
 323                 }
 324                 if ((project.getIndexFile() == null) || (project.getIndexFile().length() == 0)) {
 325                         checkReport.addIssue("warning.empty-index", false);
 326                 } else {
 327                         File indexFile = new File(project.getLocalPath(), project.getIndexFile());
 328                         if (!indexFile.exists()) {
 329                                 checkReport.addIssue("error.index-missing", true);
 330                         }
 331                 }
 332                 String indexFile = project.getIndexFile();
 333                 boolean hasIndexFile = (indexFile != null) && (indexFile.length() > 0);
 334                 List<String> allowedIndexContentTypes = Arrays.asList("text/html", "application/xhtml+xml");
 335                 if (hasIndexFile && !allowedIndexContentTypes.contains(project.getFileOption(indexFile).getMimeType())) {
 336                         checkReport.addIssue("warning.index-not-html", false);
 337                 }
 338                 Map<String, FileOption> fileOptions = project.getFileOptions();
 339                 Set<Entry<String, FileOption>> fileOptionEntries = fileOptions.entrySet();
 340                 boolean insert = fileOptionEntries.isEmpty();
 341                 for (Entry<String, FileOption> fileOptionEntry : fileOptionEntries) {
 342                         String fileName = fileOptionEntry.getKey();
 343                         FileOption fileOption = fileOptionEntry.getValue();
 344                         insert |= fileOption.isInsert() || fileOption.isInsertRedirect();
 345                         if (fileName.equals(project.getIndexFile()) && !fileOption.isInsert() && !fileOption.isInsertRedirect()) {
 346                                 checkReport.addIssue("error.index-not-inserted", true);
 347                         }
 348                         if (!fileOption.isInsert() && fileOption.isInsertRedirect() && ((fileOption.getCustomKey().length() == 0) || "CHK@".equals(fileOption.getCustomKey()))) {
 349                                 checkReport.addIssue("error.no-custom-key", true, fileName);
 350                         }
 351                 }
 352                 if (!insert) {
 353                         checkReport.addIssue("error.no-files-to-insert", true);
 354                 }
 355                 Set<String> fileNames = new HashSet<String>();
 356                 for (Entry<String, FileOption> fileOptionEntry : fileOptionEntries) {
 357                         FileOption fileOption = fileOptionEntry.getValue();
 358                         if (!fileOption.isInsert() && !fileOption.isInsertRedirect()) {
 359                                 logger.log(Level.FINEST, "Ignoring {0}.", fileOptionEntry.getKey());
 360                                 continue;
 361                         }
 362                         String fileName = fileOptionEntry.getKey();
 363                         if (fileOption.hasChangedName()) {
 364                                 fileName = fileOption.getChangedName();
 365                         }
 366                         logger.log(Level.FINEST, "Adding “{0}” for {1}.", new Object[] { fileName, fileOptionEntry.getKey() });
 367                         if (!fileNames.add(fileName)) {
 368                                 checkReport.addIssue("error.duplicate-file", true, fileName);
 369                         }
 370                 }
 371                 return checkReport;
 372         }
 373
 374         /**
 375          * {@inheritDoc}
 376          */
 377         public void run() {
 378                 fireProjectInsertStarted();
 379                 List<ScannedFile> files = fileScanner.getFiles();
 380
 381                 /* create connection to node */
 382                 synchronized (lockObject) {
 383                         connection = freenetInterface.getConnection("project-insert-" + random + counter++);
 384                 }
 385                 connection.setTempDirectory(tempDirectory);
 386                 boolean connected = false;
 387                 Throwable cause = null;
 388                 try {
 389                         connected = connection.connect();
 390                 } catch (IOException e1) {
 391                         cause = e1;
 392                 }
 393
 394                 if (!connected || cancelled) {
 395                         fireProjectInsertFinished(false, cancelled ? new AbortedException() : cause);
 396                         return;
 397                 }
 398
 399                 Client client = new Client(connection);
 400
 401                 /* collect files */
 402                 int edition = project.getEdition();
 403                 String dirURI = "USK@" + project.getInsertURI() + "/" + project.getPath() + "/" + edition + "/";
 404                 ClientPutComplexDir putDir = new ClientPutComplexDir("dir-" + counter++, dirURI, tempDirectory);
 405                 if ((project.getIndexFile() != null) && (project.getIndexFile().length() > 0)) {
 406                         putDir.setDefaultName(project.getIndexFile());
 407                 }
 408                 putDir.setVerbosity(Verbosity.ALL);
 409                 putDir.setMaxRetries(-1);
 410                 putDir.setEarlyEncode(false);
 411                 putDir.setManifestPutter(ManifestPutter.DEFAULT);
 412                 for (ScannedFile file : files) {
 413                         FileEntry fileEntry = createFileEntry(file, edition);
 414                         if (fileEntry != null) {
 415                                 try {
 416                                         putDir.addFileEntry(fileEntry);
 417                                 } catch (IOException ioe1) {
 418                                         fireProjectInsertFinished(false, ioe1);
 419                                         return;
 420                                 }
 421                         }
 422                 }
 423
 424                 /* start request */
 425                 try {
 426                         client.execute(putDir, progressListener);
 427                         fireProjectUploadFinished();
 428                 } catch (IOException ioe1) {
 429                         fireProjectInsertFinished(false, ioe1);
 430                         return;
 431                 }
 432
 433                 /* parse progress and success messages */
 434                 String finalURI = null;
 435                 boolean success = false;
 436                 boolean finished = false;
 437                 boolean disconnected = false;
 438                 while (!finished && !cancelled) {
 439                         Message message = client.readMessage();
 440                         finished = (message == null) || (disconnected = client.isDisconnected());
 441                         logger.log(Level.FINE, "Received message: " + message);
 442                         if (!finished) {
 443                                 @SuppressWarnings("null")
 444                                 String messageName = message.getName();
 445                                 if ("URIGenerated".equals(messageName)) {
 446                                         finalURI = message.get("URI");
 447                                         fireProjectURIGenerated(finalURI);
 448                                 }
 449                                 if ("SimpleProgress".equals(messageName)) {
 450                                         int total = Integer.parseInt(message.get("Total"));
 451                                         int succeeded = Integer.parseInt(message.get("Succeeded"));
 452                                         int fatal = Integer.parseInt(message.get("FatallyFailed"));
 453                                         int failed = Integer.parseInt(message.get("Failed"));
 454                                         boolean finalized = Boolean.parseBoolean(message.get("FinalizedTotal"));
 455                                         fireProjectInsertProgress(succeeded, failed, fatal, total, finalized);
 456                                 }
 457                                 success |= "PutSuccessful".equals(messageName);
 458                                 finished = (success && (finalURI != null)) || "PutFailed".equals(messageName) || messageName.endsWith("Error");
 459                         }
 460                 }
 461
 462                 /* post-insert work */
 463                 if (success) {
 464                         @SuppressWarnings("null")
 465                         String editionPart = finalURI.substring(finalURI.lastIndexOf('/') + 1);
 466                         int newEdition = Integer.parseInt(editionPart);
 467                         project.setEdition(newEdition);
 468                         project.setLastInsertionTime(System.currentTimeMillis());
 469                         project.copyHashes();
 470                 }
 471                 fireProjectInsertFinished(success, cancelled ? new AbortedException() : (disconnected ? new IOException("Connection terminated") : null));
 472         }
 473
 474         //
 475         // INTERFACE FileScannerListener
 476         //
 477
 478         /**
 479          * {@inheritDoc}
 480          */
 481         public void fileScannerFinished(FileScanner fileScanner) {
 482                 if (!fileScanner.isError()) {
 483                         new Thread(this).start();
 484                 } else {
 485                         fireProjectInsertFinished(false, null);
 486                 }
 487                 fileScanner.removeFileScannerListener(this);
 488         }
 489
 490         /**
 491          * Container class that collects all warnings and errors that occured during
 492          * {@link ProjectInserter#validateProject(Project) project validation}.
 493          *
 494          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 495          */
 496         public static class CheckReport implements Iterable<Issue> {
 497
 498                 /** The issures that occured. */
 499                 private final List<Issue> issues = new ArrayList<Issue>();
 500
 501                 /**
 502                  * Adds an issue.
 503                  *
 504                  * @param issue
 505                  *            The issue to add
 506                  */
 507                 public void addIssue(Issue issue) {
 508                         issues.add(issue);
 509                 }
 510
 511                 /**
 512                  * Creates an {@link Issue} from the given error key and fatality flag
 513                  * and {@link #addIssue(Issue) adds} it.
 514                  *
 515                  * @param errorKey
 516                  *            The error key
 517                  * @param fatal
 518                  *            {@code true} if the error is fatal, {@code false} if only
 519                  *            a warning should be generated
 520                  * @param parameters
 521                  *            Any additional parameters
 522                  */
 523                 public void addIssue(String errorKey, boolean fatal, String... parameters) {
 524                         addIssue(new Issue(errorKey, fatal, parameters));
 525                 }
 526
 527                 /**
 528                  * {@inheritDoc}
 529                  */
 530                 public Iterator<Issue> iterator() {
 531                         return issues.iterator();
 532                 }
 533
 534                 /**
 535                  * Returns whether this check report does not contain any errors.
 536                  *
 537                  * @return {@code true} if this check report does not contain any
 538                  *         errors, {@code false} if this check report does contain
 539                  *         errors
 540                  */
 541                 public boolean isEmpty() {
 542                         return issues.isEmpty();
 543                 }
 544
 545                 /**
 546                  * Returns the number of issues in this check report.
 547                  *
 548                  * @return The number of issues
 549                  */
 550                 public int size() {
 551                         return issues.size();
 552                 }
 553
 554         }
 555
 556         /**
 557          * Container class for a single issue. An issue contains an error key
 558          * that describes the error, and a fatality flag that determines whether
 559          * the insert has to be aborted (if the flag is {@code true}) or if it
 560          * can still be performed and only a warning should be generated (if the
 561          * flag is {@code false}).
 562          *
 563          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’
 564          *         Roden</a>
 565          */
 566         public static class Issue {
 567
 568                 /** The error key. */
 569                 private final String errorKey;
 570
 571                 /** The fatality flag. */
 572                 private final boolean fatal;
 573
 574                 /** Additional parameters. */
 575                 private String[] parameters;
 576
 577                 /**
 578                  * Creates a new issue.
 579                  *
 580                  * @param errorKey
 581                  *            The error key
 582                  * @param fatal
 583                  *            The fatality flag
 584                  * @param parameters
 585                  *            Any additional parameters
 586                  */
 587                 protected Issue(String errorKey, boolean fatal, String... parameters) {
 588                         this.errorKey = errorKey;
 589                         this.fatal = fatal;
 590                         this.parameters = parameters;
 591                 }
 592
 593                 /**
 594                  * Returns the key of the encountered error.
 595                  *
 596                  * @return The error key
 597                  */
 598                 public String getErrorKey() {
 599                         return errorKey;
 600                 }
 601
 602                 /**
 603                  * Returns whether the issue is fatal and the insert has to be
 604                  * aborted. Otherwise only a warning should be shown.
 605                  *
 606                  * @return {@code true} if the insert needs to be aborted, {@code
 607                  *         false} otherwise
 608                  */
 609                 public boolean isFatal() {
 610                         return fatal;
 611                 }
 612
 613                 /**
 614                  * Returns any additional parameters.
 615                  *
 616                  * @return The additional parameters
 617                  */
 618                 public String[] getParameters() {
 619                         return parameters;
 620                 }
 621
 622         }
 623
 624 }