001// License: GPL. For details, see LICENSE file. 002package org.openstreetmap.josm.io; 003 004import static org.openstreetmap.josm.tools.I18n.tr; 005import static org.openstreetmap.josm.tools.I18n.trn; 006 007import java.io.IOException; 008import java.io.InputStream; 009import java.net.HttpURLConnection; 010import java.util.ArrayList; 011import java.util.Collection; 012import java.util.Collections; 013import java.util.HashSet; 014import java.util.Iterator; 015import java.util.LinkedHashSet; 016import java.util.List; 017import java.util.Set; 018import java.util.concurrent.Callable; 019import java.util.concurrent.CompletionService; 020import java.util.concurrent.ExecutionException; 021import java.util.concurrent.ExecutorCompletionService; 022import java.util.concurrent.ExecutorService; 023import java.util.concurrent.Executors; 024import java.util.concurrent.Future; 025import java.util.stream.Collectors; 026 027import org.openstreetmap.josm.data.osm.DataSet; 028import org.openstreetmap.josm.data.osm.DataSetMerger; 029import org.openstreetmap.josm.data.osm.Node; 030import org.openstreetmap.josm.data.osm.OsmPrimitive; 031import org.openstreetmap.josm.data.osm.OsmPrimitiveType; 032import org.openstreetmap.josm.data.osm.PrimitiveId; 033import org.openstreetmap.josm.data.osm.Relation; 034import org.openstreetmap.josm.data.osm.RelationMember; 035import org.openstreetmap.josm.data.osm.SimplePrimitiveId; 036import org.openstreetmap.josm.data.osm.Way; 037import org.openstreetmap.josm.gui.progress.NullProgressMonitor; 038import org.openstreetmap.josm.gui.progress.ProgressMonitor; 039import org.openstreetmap.josm.spi.preferences.Config; 040import org.openstreetmap.josm.tools.Logging; 041import org.openstreetmap.josm.tools.Utils; 042 043/** 044 * Retrieves a set of {@link OsmPrimitive}s from an OSM server using the so called 045 * Multi Fetch API. 046 * 047 * Usage: 048 * <pre> 049 * MultiFetchServerObjectReader reader = MultiFetchServerObjectReader() 050 * .append(2345,2334,4444) 051 * .append(new Node(72343)); 052 * reader.parseOsm(); 053 * if (!reader.getMissingPrimitives().isEmpty()) { 054 * Logging.info("There are missing primitives: " + reader.getMissingPrimitives()); 055 * } 056 * if (!reader.getSkippedWays().isEmpty()) { 057 * Logging.info("There are skipped ways: " + reader.getMissingPrimitives()); 058 * } 059 * </pre> 060 */ 061public class MultiFetchServerObjectReader extends OsmServerReader { 062 /** 063 * the max. number of primitives retrieved in one step. Assuming IDs with 10 digits, 064 * this leads to a max. request URL of ~ 1900 Bytes ((10 digits + 1 Separator) * 170), 065 * which should be safe according to the 066 * <a href="http://www.boutell.com/newfaq/misc/urllength.html">WWW FAQ</a>. 067 */ 068 private static final int MAX_IDS_PER_REQUEST = 170; 069 070 private final Set<Long> nodes; 071 private final Set<Long> ways; 072 private final Set<Long> relations; 073 private Set<PrimitiveId> missingPrimitives; 074 private final DataSet outputDataSet; 075 076 /** 077 * Constructs a {@code MultiFetchServerObjectReader}. 078 */ 079 protected MultiFetchServerObjectReader() { 080 nodes = new LinkedHashSet<>(); 081 ways = new LinkedHashSet<>(); 082 relations = new LinkedHashSet<>(); 083 this.outputDataSet = new DataSet(); 084 this.missingPrimitives = new LinkedHashSet<>(); 085 } 086 087 /** 088 * Creates a new instance of {@link MultiFetchServerObjectReader} or {@link MultiFetchOverpassObjectReader} 089 * depending on the {@link OverpassDownloadReader#FOR_MULTI_FETCH preference}. 090 * 091 * @return a new instance 092 * @since 9241 093 */ 094 public static MultiFetchServerObjectReader create() { 095 return create(OverpassDownloadReader.FOR_MULTI_FETCH.get()); 096 } 097 098 /** 099 * Creates a new instance of {@link MultiFetchServerObjectReader} or {@link MultiFetchOverpassObjectReader} 100 * depending on the {@code fromMirror} parameter. 101 * 102 * @param fromMirror {@code false} for {@link MultiFetchServerObjectReader}, {@code true} for {@link MultiFetchOverpassObjectReader} 103 * @return a new instance 104 * @since 15520 (changed visibility) 105 */ 106 public static MultiFetchServerObjectReader create(final boolean fromMirror) { 107 if (fromMirror) { 108 return new MultiFetchOverpassObjectReader(); 109 } else { 110 return new MultiFetchServerObjectReader(); 111 } 112 } 113 114 /** 115 * Remembers an {@link OsmPrimitive}'s id. The id will 116 * later be fetched as part of a Multi Get request. 117 * 118 * Ignore the id if it represents a new primitives. 119 * 120 * @param id the id 121 */ 122 protected void remember(PrimitiveId id) { 123 if (id.isNew()) return; 124 switch(id.getType()) { 125 case NODE: nodes.add(id.getUniqueId()); break; 126 case WAY: ways.add(id.getUniqueId()); break; 127 case RELATION: relations.add(id.getUniqueId()); break; 128 default: throw new AssertionError(); 129 } 130 } 131 132 /** 133 * appends a {@link OsmPrimitive} id to the list of ids which will be fetched from the server. 134 * 135 * @param ds the {@link DataSet} to which the primitive belongs 136 * @param id the primitive id 137 * @param type The primitive type. Must be one of {@link OsmPrimitiveType#NODE NODE}, {@link OsmPrimitiveType#WAY WAY}, 138 * {@link OsmPrimitiveType#RELATION RELATION} 139 * @return this 140 */ 141 public MultiFetchServerObjectReader append(DataSet ds, long id, OsmPrimitiveType type) { 142 OsmPrimitive p = ds.getPrimitiveById(id, type); 143 switch(type) { 144 case NODE: 145 return appendNode((Node) p); 146 case WAY: 147 return appendWay((Way) p); 148 case RELATION: 149 return appendRelation((Relation) p); 150 default: 151 return this; 152 } 153 } 154 155 /** 156 * appends a {@link Node} id to the list of ids which will be fetched from the server. 157 * 158 * @param node the node (ignored, if null) 159 * @return this 160 */ 161 public MultiFetchServerObjectReader appendNode(Node node) { 162 if (node == null) return this; 163 remember(node.getPrimitiveId()); 164 return this; 165 } 166 167 /** 168 * appends a {@link Way} id and the list of ids of nodes the way refers to the list of ids which will be fetched from the server. 169 * 170 * @param way the way (ignored, if null) 171 * @return this 172 */ 173 public MultiFetchServerObjectReader appendWay(Way way) { 174 if (way == null) return this; 175 if (way.isNew()) return this; 176 for (Node node: !recursesDown() ? way.getNodes() : Collections.<Node>emptyList()) { 177 if (!node.isNew()) { 178 remember(node.getPrimitiveId()); 179 } 180 } 181 remember(way.getPrimitiveId()); 182 return this; 183 } 184 185 /** 186 * appends a {@link Relation} id to the list of ids which will be fetched from the server. 187 * 188 * @param relation the relation (ignored, if null) 189 * @return this 190 */ 191 protected MultiFetchServerObjectReader appendRelation(Relation relation) { 192 if (relation == null) return this; 193 if (relation.isNew()) return this; 194 remember(relation.getPrimitiveId()); 195 for (RelationMember member : !recursesDown() ? relation.getMembers() : Collections.<RelationMember>emptyList()) { 196 // avoid infinite recursion in case of cyclic dependencies in relations 197 if (OsmPrimitiveType.from(member.getMember()) == OsmPrimitiveType.RELATION 198 && relations.contains(member.getMember().getId())) { 199 continue; 200 } 201 if (!member.getMember().isIncomplete()) { 202 append(member.getMember()); 203 } 204 } 205 return this; 206 } 207 208 /** 209 * appends an {@link OsmPrimitive} to the list of ids which will be fetched from the server. 210 * @param primitive the primitive 211 * @return this 212 */ 213 public MultiFetchServerObjectReader append(OsmPrimitive primitive) { 214 if (primitive instanceof Node) { 215 return appendNode((Node) primitive); 216 } else if (primitive instanceof Way) { 217 return appendWay((Way) primitive); 218 } else if (primitive instanceof Relation) { 219 return appendRelation((Relation) primitive); 220 } 221 return this; 222 } 223 224 /** 225 * appends a list of {@link OsmPrimitive} to the list of ids which will be fetched from the server. 226 * 227 * @param primitives the list of primitives (ignored, if null) 228 * @return this 229 * 230 * @see #append(OsmPrimitive) 231 */ 232 public MultiFetchServerObjectReader append(Collection<? extends OsmPrimitive> primitives) { 233 if (primitives == null) return this; 234 for (OsmPrimitive primitive : primitives) { 235 append(primitive); 236 } 237 return this; 238 } 239 240 /** 241 * extracts a subset of max {@link #MAX_IDS_PER_REQUEST} ids from <code>ids</code> and 242 * replies the subset. The extracted subset is removed from <code>ids</code>. 243 * 244 * @param ids a set of ids 245 * @return the subset of ids 246 */ 247 protected Set<Long> extractIdPackage(Set<Long> ids) { 248 Set<Long> pkg = new HashSet<>(); 249 if (ids.isEmpty()) 250 return pkg; 251 if (ids.size() > MAX_IDS_PER_REQUEST) { 252 Iterator<Long> it = ids.iterator(); 253 for (int i = 0; i < MAX_IDS_PER_REQUEST; i++) { 254 pkg.add(it.next()); 255 } 256 ids.removeAll(pkg); 257 } else { 258 pkg.addAll(ids); 259 ids.clear(); 260 } 261 return pkg; 262 } 263 264 /** 265 * builds the Multi Get request string for a set of ids and a given {@link OsmPrimitiveType}. 266 * 267 * @param type The primitive type. Must be one of {@link OsmPrimitiveType#NODE NODE}, {@link OsmPrimitiveType#WAY WAY}, 268 * {@link OsmPrimitiveType#RELATION RELATION} 269 * @param idPackage the package of ids 270 * @return the request string 271 */ 272 protected String buildRequestString(final OsmPrimitiveType type, Set<Long> idPackage) { 273 return type.getAPIName() + "s?" + type.getAPIName() + "s=" + idPackage.stream().map(String::valueOf).collect(Collectors.joining(",")); 274 } 275 276 protected void rememberNodesOfIncompleteWaysToLoad(DataSet from) { 277 for (Way w: from.getWays()) { 278 if (w.hasIncompleteNodes()) { 279 for (Node n: w.getNodes()) { 280 if (n.isIncomplete()) { 281 nodes.add(n.getId()); 282 } 283 } 284 } 285 } 286 } 287 288 /** 289 * merges the dataset <code>from</code> to {@link #outputDataSet}. 290 * 291 * @param from the other dataset 292 */ 293 protected void merge(DataSet from) { 294 final DataSetMerger visitor = new DataSetMerger(outputDataSet, from); 295 visitor.merge(); 296 } 297 298 /** 299 * fetches a set of ids of a given {@link OsmPrimitiveType} from the server 300 * 301 * @param ids the set of ids 302 * @param type The primitive type. Must be one of {@link OsmPrimitiveType#NODE NODE}, {@link OsmPrimitiveType#WAY WAY}, 303 * {@link OsmPrimitiveType#RELATION RELATION} 304 * @param progressMonitor progress monitor 305 * @throws OsmTransferException if an error occurs while communicating with the API server 306 */ 307 protected void fetchPrimitives(Set<Long> ids, OsmPrimitiveType type, ProgressMonitor progressMonitor) throws OsmTransferException { 308 String msg; 309 final String baseUrl = getBaseUrl(); 310 switch (type) { 311 // CHECKSTYLE.OFF: SingleSpaceSeparator 312 case NODE: msg = tr("Fetching a package of nodes from ''{0}''", baseUrl); break; 313 case WAY: msg = tr("Fetching a package of ways from ''{0}''", baseUrl); break; 314 case RELATION: msg = tr("Fetching a package of relations from ''{0}''", baseUrl); break; 315 // CHECKSTYLE.ON: SingleSpaceSeparator 316 default: throw new AssertionError(); 317 } 318 progressMonitor.setTicksCount(ids.size()); 319 progressMonitor.setTicks(0); 320 // The complete set containing all primitives to fetch 321 Set<Long> toFetch = new HashSet<>(ids); 322 // Build a list of fetchers that will download smaller sets containing only MAX_IDS_PER_REQUEST (200) primitives each. 323 // we will run up to MAX_DOWNLOAD_THREADS concurrent fetchers. 324 int threadsNumber = Config.getPref().getInt("osm.download.threads", OsmApi.MAX_DOWNLOAD_THREADS); 325 threadsNumber = Utils.clamp(threadsNumber, 1, OsmApi.MAX_DOWNLOAD_THREADS); 326 final ExecutorService exec = Executors.newFixedThreadPool( 327 threadsNumber, Utils.newThreadFactory(getClass() + "-%d", Thread.NORM_PRIORITY)); 328 CompletionService<FetchResult> ecs = new ExecutorCompletionService<>(exec); 329 List<Future<FetchResult>> jobs = new ArrayList<>(); 330 while (!toFetch.isEmpty()) { 331 jobs.add(ecs.submit(new Fetcher(type, extractIdPackage(toFetch), progressMonitor))); 332 } 333 // Run the fetchers 334 for (int i = 0; i < jobs.size() && !isCanceled(); i++) { 335 progressMonitor.subTask(msg + "... " + progressMonitor.getTicks() + '/' + progressMonitor.getTicksCount()); 336 try { 337 FetchResult result = ecs.take().get(); 338 if (result.rc404 != null) { 339 List<Long> toSplit = new ArrayList<>(result.rc404); 340 int n = toSplit.size() / 2; 341 jobs.add(ecs.submit(new Fetcher(type, new HashSet<>(toSplit.subList(0, n)), progressMonitor))); 342 jobs.add(ecs.submit(new Fetcher(type, new HashSet<>(toSplit.subList(n, toSplit.size())), progressMonitor))); 343 } 344 if (result.missingPrimitives != null) { 345 missingPrimitives.addAll(result.missingPrimitives); 346 } 347 if (result.dataSet != null && !isCanceled()) { 348 rememberNodesOfIncompleteWaysToLoad(result.dataSet); 349 merge(result.dataSet); 350 } 351 } catch (InterruptedException | ExecutionException e) { 352 Logging.error(e); 353 } 354 } 355 exec.shutdown(); 356 // Cancel requests if the user chose to 357 if (isCanceled()) { 358 for (Future<FetchResult> job : jobs) { 359 job.cancel(true); 360 } 361 } 362 } 363 364 /** 365 * invokes one or more Multi Gets to fetch the {@link OsmPrimitive}s and replies 366 * the dataset of retrieved primitives. Note that the dataset includes non visible primitives too! 367 * In contrast to a simple Get for a node, a way, or a relation, a Multi Get always replies 368 * the latest version of the primitive (if any), even if the primitive is not visible (i.e. if 369 * visible==false). 370 * 371 * Invoke {@link #getMissingPrimitives()} to get a list of primitives which have not been 372 * found on the server (the server response code was 404) 373 * 374 * @return the parsed data 375 * @throws OsmTransferException if an error occurs while communicating with the API server 376 * @see #getMissingPrimitives() 377 * 378 */ 379 @Override 380 public DataSet parseOsm(ProgressMonitor progressMonitor) throws OsmTransferException { 381 int n = nodes.size() + ways.size() + relations.size(); 382 progressMonitor.beginTask(trn("Downloading {0} object from ''{1}''", 383 "Downloading {0} objects from ''{1}''", n, n, OsmApi.getOsmApi().getBaseUrl())); 384 try { 385 missingPrimitives = new HashSet<>(); 386 if (isCanceled()) return null; 387 fetchPrimitives(ways, OsmPrimitiveType.WAY, progressMonitor); 388 if (isCanceled()) return null; 389 fetchPrimitives(nodes, OsmPrimitiveType.NODE, progressMonitor); 390 if (isCanceled()) return null; 391 fetchPrimitives(relations, OsmPrimitiveType.RELATION, progressMonitor); 392 if (outputDataSet != null) { 393 outputDataSet.deleteInvisible(); 394 } 395 return outputDataSet; 396 } finally { 397 progressMonitor.finishTask(); 398 } 399 } 400 401 /** 402 * replies the set of ids of all primitives for which a fetch request to the 403 * server was submitted but which are not available from the server (the server 404 * replied a return code of 404) 405 * 406 * @return the set of ids of missing primitives 407 */ 408 public Set<PrimitiveId> getMissingPrimitives() { 409 return missingPrimitives; 410 } 411 412 /** 413 * Whether this reader fetches nodes when loading ways, or members when loading relations. 414 * 415 * @return {@code true} if the reader recurses down 416 */ 417 protected boolean recursesDown() { 418 return false; 419 } 420 421 /** 422 * The class holding the results given by {@link Fetcher}. 423 * It is only a wrapper of the resulting {@link DataSet} and the collection of {@link PrimitiveId} that could not have been loaded. 424 */ 425 protected static class FetchResult { 426 427 /** 428 * The resulting data set 429 */ 430 public final DataSet dataSet; 431 432 /** 433 * The collection of primitive ids that could not have been loaded 434 */ 435 public final Set<PrimitiveId> missingPrimitives; 436 437 private Set<Long> rc404; 438 439 /** 440 * Constructs a {@code FetchResult} 441 * @param dataSet The resulting data set 442 * @param missingPrimitives The collection of primitive ids that could not have been loaded 443 */ 444 public FetchResult(DataSet dataSet, Set<PrimitiveId> missingPrimitives) { 445 this.dataSet = dataSet; 446 this.missingPrimitives = missingPrimitives; 447 } 448 } 449 450 /** 451 * The class that actually download data from OSM API. 452 * Several instances of this class are used by {@link MultiFetchServerObjectReader} (one per set of primitives to fetch). 453 * The inheritance of {@link OsmServerReader} is only explained by the need to have a distinct OSM connection by {@code Fetcher} instance. 454 * @see FetchResult 455 */ 456 protected class Fetcher extends OsmServerReader implements Callable<FetchResult> { 457 458 private final Set<Long> pkg; 459 private final OsmPrimitiveType type; 460 private final ProgressMonitor progressMonitor; 461 462 /** 463 * Constructs a {@code Fetcher} 464 * @param type The primitive type. Must be one of {@link OsmPrimitiveType#NODE NODE}, {@link OsmPrimitiveType#WAY WAY}, 465 * {@link OsmPrimitiveType#RELATION RELATION} 466 * @param idsPackage The set of primitives ids to fetch 467 * @param progressMonitor The progress monitor 468 */ 469 public Fetcher(OsmPrimitiveType type, Set<Long> idsPackage, ProgressMonitor progressMonitor) { 470 this.pkg = idsPackage; 471 this.type = type; 472 this.progressMonitor = progressMonitor; 473 } 474 475 @Override 476 public DataSet parseOsm(ProgressMonitor progressMonitor) throws OsmTransferException { 477 // This method is implemented because of the OsmServerReader inheritance, but not used, 478 // as the main target of this class is the call() method. 479 return fetch(progressMonitor).dataSet; 480 } 481 482 @Override 483 public FetchResult call() throws Exception { 484 return fetch(progressMonitor); 485 } 486 487 /** 488 * fetches the requested primitives and updates the specified progress monitor. 489 * @param progressMonitor the progress monitor 490 * @return the {@link FetchResult} of this operation 491 * @throws OsmTransferException if an error occurs while communicating with the API server 492 */ 493 protected FetchResult fetch(ProgressMonitor progressMonitor) throws OsmTransferException { 494 try { 495 return multiGetIdPackage(type, pkg, progressMonitor); 496 } catch (OsmApiException e) { 497 if (e.getResponseCode() == HttpURLConnection.HTTP_NOT_FOUND) { 498 if (pkg.size() > 4) { 499 FetchResult res = new FetchResult(null, null); 500 res.rc404 = pkg; 501 return res; 502 } 503 Logging.info(tr("Server replied with response code 404, retrying with an individual request for each object.")); 504 return singleGetIdPackage(type, pkg, progressMonitor); 505 } else { 506 throw e; 507 } 508 } 509 } 510 511 @Override 512 protected String getBaseUrl() { 513 return MultiFetchServerObjectReader.this.getBaseUrl(); 514 } 515 516 /** 517 * invokes a Multi Get for a set of ids and a given {@link OsmPrimitiveType}. 518 * The retrieved primitives are merged to {@link #outputDataSet}. 519 * 520 * @param type The primitive type. Must be one of {@link OsmPrimitiveType#NODE NODE}, {@link OsmPrimitiveType#WAY WAY}, 521 * {@link OsmPrimitiveType#RELATION RELATION} 522 * @param pkg the package of ids 523 * @param progressMonitor progress monitor 524 * @return the {@link FetchResult} of this operation 525 * @throws OsmTransferException if an error occurs while communicating with the API server 526 */ 527 protected FetchResult multiGetIdPackage(OsmPrimitiveType type, Set<Long> pkg, ProgressMonitor progressMonitor) 528 throws OsmTransferException { 529 String request = buildRequestString(type, pkg); 530 FetchResult result = null; 531 try (InputStream in = getInputStream(request, NullProgressMonitor.INSTANCE)) { 532 if (in == null) return null; 533 progressMonitor.subTask(tr("Downloading OSM data...")); 534 try { 535 result = new FetchResult(OsmReader.parseDataSet(in, progressMonitor.createSubTaskMonitor(pkg.size(), false)), null); 536 } catch (IllegalDataException e) { 537 throw new OsmTransferException(e); 538 } 539 } catch (IOException ex) { 540 Logging.warn(ex); 541 } 542 return result; 543 } 544 545 /** 546 * invokes a Multi Get for a single id and a given {@link OsmPrimitiveType}. 547 * The retrieved primitive is merged to {@link #outputDataSet}. 548 * 549 * @param type The primitive type. Must be one of {@link OsmPrimitiveType#NODE NODE}, {@link OsmPrimitiveType#WAY WAY}, 550 * {@link OsmPrimitiveType#RELATION RELATION} 551 * @param id the id 552 * @param progressMonitor progress monitor 553 * @return the {@link DataSet} resulting of this operation 554 * @throws OsmTransferException if an error occurs while communicating with the API server 555 */ 556 protected DataSet singleGetId(OsmPrimitiveType type, long id, ProgressMonitor progressMonitor) throws OsmTransferException { 557 String request = buildRequestString(type, Collections.singleton(id)); 558 DataSet result = null; 559 try (InputStream in = getInputStream(request, NullProgressMonitor.INSTANCE)) { 560 if (in == null) return null; 561 progressMonitor.subTask(tr("Downloading OSM data...")); 562 try { 563 result = OsmReader.parseDataSet(in, progressMonitor.createSubTaskMonitor(1, false)); 564 } catch (IllegalDataException e) { 565 throw new OsmTransferException(e); 566 } 567 } catch (IOException ex) { 568 Logging.warn(ex); 569 } 570 return result; 571 } 572 573 /** 574 * invokes a sequence of Multi Gets for individual ids in a set of ids and a given {@link OsmPrimitiveType}. 575 * The retrieved primitives are merged to {@link #outputDataSet}. 576 * 577 * This method is used if one of the ids in pkg doesn't exist (the server replies with return code 404). 578 * If the set is fetched with this method it is possible to find out which of the ids doesn't exist. 579 * Unfortunately, the server does not provide an error header or an error body for a 404 reply. 580 * 581 * @param type The primitive type. Must be one of {@link OsmPrimitiveType#NODE NODE}, {@link OsmPrimitiveType#WAY WAY}, 582 * {@link OsmPrimitiveType#RELATION RELATION} 583 * @param pkg the set of ids 584 * @param progressMonitor progress monitor 585 * @return the {@link FetchResult} of this operation 586 * @throws OsmTransferException if an error occurs while communicating with the API server 587 */ 588 protected FetchResult singleGetIdPackage(OsmPrimitiveType type, Set<Long> pkg, ProgressMonitor progressMonitor) 589 throws OsmTransferException { 590 FetchResult result = new FetchResult(new DataSet(), new HashSet<PrimitiveId>()); 591 String baseUrl = OsmApi.getOsmApi().getBaseUrl(); 592 for (long id : pkg) { 593 try { 594 String msg; 595 switch (type) { 596 // CHECKSTYLE.OFF: SingleSpaceSeparator 597 case NODE: msg = tr("Fetching node with id {0} from ''{1}''", id, baseUrl); break; 598 case WAY: msg = tr("Fetching way with id {0} from ''{1}''", id, baseUrl); break; 599 case RELATION: msg = tr("Fetching relation with id {0} from ''{1}''", id, baseUrl); break; 600 // CHECKSTYLE.ON: SingleSpaceSeparator 601 default: throw new AssertionError(); 602 } 603 progressMonitor.setCustomText(msg); 604 result.dataSet.mergeFrom(singleGetId(type, id, progressMonitor)); 605 } catch (OsmApiException e) { 606 if (e.getResponseCode() == HttpURLConnection.HTTP_NOT_FOUND) { 607 Logging.info(tr("Server replied with response code 404 for id {0}. Skipping.", Long.toString(id))); 608 result.missingPrimitives.add(new SimplePrimitiveId(id, type)); 609 } else { 610 throw e; 611 } 612 } 613 } 614 return result; 615 } 616 } 617}