1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.io;
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3 |
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4 | import static org.openstreetmap.josm.tools.I18n.tr;
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5 | import static org.openstreetmap.josm.tools.I18n.trn;
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6 |
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7 | import java.io.IOException;
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8 | import java.io.InputStream;
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9 | import java.net.HttpURLConnection;
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10 | import java.util.ArrayList;
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11 | import java.util.Collection;
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12 | import java.util.Collections;
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13 | import java.util.HashSet;
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14 | import java.util.Iterator;
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15 | import java.util.LinkedHashSet;
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16 | import java.util.List;
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17 | import java.util.Set;
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18 | import java.util.concurrent.Callable;
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19 | import java.util.concurrent.CompletionService;
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20 | import java.util.concurrent.ExecutionException;
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21 | import java.util.concurrent.ExecutorCompletionService;
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22 | import java.util.concurrent.ExecutorService;
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23 | import java.util.concurrent.Executors;
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24 | import java.util.concurrent.Future;
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25 |
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26 | import org.openstreetmap.josm.Main;
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27 | import org.openstreetmap.josm.data.osm.DataSet;
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28 | import org.openstreetmap.josm.data.osm.DataSetMerger;
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29 | import org.openstreetmap.josm.data.osm.Node;
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30 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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31 | import org.openstreetmap.josm.data.osm.OsmPrimitiveType;
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32 | import org.openstreetmap.josm.data.osm.PrimitiveId;
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33 | import org.openstreetmap.josm.data.osm.Relation;
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34 | import org.openstreetmap.josm.data.osm.RelationMember;
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35 | import org.openstreetmap.josm.data.osm.SimplePrimitiveId;
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36 | import org.openstreetmap.josm.data.osm.Way;
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37 | import org.openstreetmap.josm.gui.preferences.server.OverpassServerPreference;
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38 | import org.openstreetmap.josm.gui.progress.NullProgressMonitor;
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39 | import org.openstreetmap.josm.gui.progress.ProgressMonitor;
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40 | import org.openstreetmap.josm.tools.Utils;
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41 |
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42 | /**
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43 | * Retrieves a set of {@link OsmPrimitive}s from an OSM server using the so called
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44 | * Multi Fetch API.
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45 | *
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46 | * Usage:
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47 | * <pre>
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48 | * MultiFetchServerObjectReader reader = MultiFetchServerObjectReader()
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49 | * .append(2345,2334,4444)
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50 | * .append(new Node(72343));
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51 | * reader.parseOsm();
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52 | * if (!reader.getMissingPrimitives().isEmpty()) {
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53 | * Main.info("There are missing primitives: " + reader.getMissingPrimitives());
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54 | * }
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55 | * if (!reader.getSkippedWays().isEmpty()) {
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56 | * Main.info("There are skipped ways: " + reader.getMissingPrimitives());
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57 | * }
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58 | * </pre>
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59 | */
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60 | public class MultiFetchServerObjectReader extends OsmServerReader {
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61 | /**
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62 | * the max. number of primitives retrieved in one step. Assuming IDs with 7 digits,
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63 | * this leads to a max. request URL of ~ 1600 Bytes ((7 digits + 1 Separator) * 200),
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64 | * which should be safe according to the
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65 | * <a href="http://www.boutell.com/newfaq/misc/urllength.html">WWW FAQ</a>.
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66 | */
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67 | private static final int MAX_IDS_PER_REQUEST = 200;
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68 |
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69 | private final Set<Long> nodes;
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70 | private final Set<Long> ways;
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71 | private final Set<Long> relations;
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72 | private Set<PrimitiveId> missingPrimitives;
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73 | private final DataSet outputDataSet;
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74 |
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75 | /**
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76 | * Constructs a {@code MultiFetchServerObjectReader}.
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77 | */
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78 | protected MultiFetchServerObjectReader() {
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79 | nodes = new LinkedHashSet<>();
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80 | ways = new LinkedHashSet<>();
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81 | relations = new LinkedHashSet<>();
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82 | this.outputDataSet = new DataSet();
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83 | this.missingPrimitives = new LinkedHashSet<>();
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84 | }
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85 |
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86 | /**
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87 | * Creates a new instance of {@link MultiFetchServerObjectReader} or {@link MultiFetchOverpassObjectReader}
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88 | * depending on the {@link OverpassServerPreference#useForMultiFetch preference}.
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89 | *
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90 | * @return a new instance
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91 | * @since 9241
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92 | */
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93 | public static MultiFetchServerObjectReader create() {
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94 | return create(OverpassServerPreference.useForMultiFetch());
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95 | }
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96 |
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97 | /**
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98 | * Creates a new instance of {@link MultiFetchServerObjectReader} or {@link MultiFetchOverpassObjectReader}
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99 | * depending on the {@code fromMirror} parameter.
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100 | *
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101 | * @param fromMirror {@code false} for {@link MultiFetchServerObjectReader}, {@code true} for {@link MultiFetchOverpassObjectReader}
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102 | * @return a new instance
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103 | * @since 9241
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104 | */
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105 | static MultiFetchServerObjectReader create(final boolean fromMirror) {
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106 | if (fromMirror) {
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107 | return new MultiFetchOverpassObjectReader();
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108 | } else {
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109 | return new MultiFetchServerObjectReader();
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110 | }
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111 | }
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112 |
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113 | /**
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114 | * Remembers an {@link OsmPrimitive}'s id. The id will
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115 | * later be fetched as part of a Multi Get request.
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116 | *
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117 | * Ignore the id if it represents a new primitives.
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118 | *
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119 | * @param id the id
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120 | */
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121 | protected void remember(PrimitiveId id) {
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122 | if (id.isNew()) return;
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123 | switch(id.getType()) {
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124 | case NODE: nodes.add(id.getUniqueId()); break;
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125 | case WAY: ways.add(id.getUniqueId()); break;
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126 | case RELATION: relations.add(id.getUniqueId()); break;
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127 | default: throw new AssertionError();
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128 | }
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129 | }
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130 |
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131 | /**
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132 | * appends a {@link OsmPrimitive} id to the list of ids which will be fetched from the server.
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133 | *
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134 | * @param ds the {@link DataSet} to which the primitive belongs
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135 | * @param id the primitive id
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136 | * @param type The primitive type. Must be one of {@link OsmPrimitiveType#NODE NODE}, {@link OsmPrimitiveType#WAY WAY},
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137 | * {@link OsmPrimitiveType#RELATION RELATION}
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138 | * @return this
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139 | */
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140 | public MultiFetchServerObjectReader append(DataSet ds, long id, OsmPrimitiveType type) {
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141 | OsmPrimitive p = ds.getPrimitiveById(id, type);
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142 | switch(type) {
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143 | case NODE:
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144 | return appendNode((Node) p);
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145 | case WAY:
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146 | return appendWay((Way) p);
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147 | case RELATION:
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148 | return appendRelation((Relation) p);
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149 | default:
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150 | return this;
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151 | }
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152 | }
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153 |
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154 | /**
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155 | * appends a {@link Node} id to the list of ids which will be fetched from the server.
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156 | *
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157 | * @param node the node (ignored, if null)
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158 | * @return this
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159 | */
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160 | public MultiFetchServerObjectReader appendNode(Node node) {
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161 | if (node == null) return this;
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162 | remember(node.getPrimitiveId());
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163 | return this;
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164 | }
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165 |
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166 | /**
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167 | * 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.
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168 | *
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169 | * @param way the way (ignored, if null)
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170 | * @return this
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171 | */
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172 | public MultiFetchServerObjectReader appendWay(Way way) {
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173 | if (way == null) return this;
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174 | if (way.isNew()) return this;
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175 | for (Node node: !recursesDown() ? way.getNodes() : Collections.<Node>emptyList()) {
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176 | if (!node.isNew()) {
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177 | remember(node.getPrimitiveId());
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178 | }
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179 | }
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180 | remember(way.getPrimitiveId());
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181 | return this;
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182 | }
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183 |
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184 | /**
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185 | * appends a {@link Relation} id to the list of ids which will be fetched from the server.
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186 | *
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187 | * @param relation the relation (ignored, if null)
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188 | * @return this
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189 | */
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190 | protected MultiFetchServerObjectReader appendRelation(Relation relation) {
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191 | if (relation == null) return this;
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192 | if (relation.isNew()) return this;
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193 | remember(relation.getPrimitiveId());
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194 | for (RelationMember member : !recursesDown() ? relation.getMembers() : Collections.<RelationMember>emptyList()) {
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195 | // avoid infinite recursion in case of cyclic dependencies in relations
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196 | if (OsmPrimitiveType.from(member.getMember()).equals(OsmPrimitiveType.RELATION)
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197 | && relations.contains(member.getMember().getId())) {
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198 | continue;
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199 | }
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200 | if (!member.getMember().isIncomplete()) {
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201 | append(member.getMember());
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202 | }
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203 | }
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204 | return this;
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205 | }
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206 |
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207 | /**
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208 | * appends an {@link OsmPrimitive} to the list of ids which will be fetched from the server.
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209 | * @param primitive the primitive
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210 | * @return this
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211 | */
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212 | public MultiFetchServerObjectReader append(OsmPrimitive primitive) {
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213 | if (primitive instanceof Node) {
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214 | return appendNode((Node) primitive);
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215 | } else if (primitive instanceof Way) {
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216 | return appendWay((Way) primitive);
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217 | } else if (primitive instanceof Relation) {
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218 | return appendRelation((Relation) primitive);
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219 | }
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220 | return this;
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221 | }
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222 |
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223 | /**
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224 | * appends a list of {@link OsmPrimitive} to the list of ids which will be fetched from the server.
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225 | *
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226 | * @param primitives the list of primitives (ignored, if null)
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227 | * @return this
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228 | *
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229 | * @see #append(OsmPrimitive)
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230 | */
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231 | public MultiFetchServerObjectReader append(Collection<? extends OsmPrimitive> primitives) {
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232 | if (primitives == null) return this;
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233 | for (OsmPrimitive primitive : primitives) {
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234 | append(primitive);
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235 | }
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236 | return this;
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237 | }
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238 |
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239 | /**
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240 | * extracts a subset of max {@link #MAX_IDS_PER_REQUEST} ids from <code>ids</code> and
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241 | * replies the subset. The extracted subset is removed from <code>ids</code>.
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242 | *
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243 | * @param ids a set of ids
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244 | * @return the subset of ids
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245 | */
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246 | protected Set<Long> extractIdPackage(Set<Long> ids) {
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247 | Set<Long> pkg = new HashSet<>();
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248 | if (ids.isEmpty())
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249 | return pkg;
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250 | if (ids.size() > MAX_IDS_PER_REQUEST) {
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251 | Iterator<Long> it = ids.iterator();
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252 | for (int i = 0; i < MAX_IDS_PER_REQUEST; i++) {
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253 | pkg.add(it.next());
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254 | }
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255 | ids.removeAll(pkg);
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256 | } else {
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257 | pkg.addAll(ids);
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258 | ids.clear();
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259 | }
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260 | return pkg;
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261 | }
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262 |
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263 | /**
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264 | * builds the Multi Get request string for a set of ids and a given {@link OsmPrimitiveType}.
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265 | *
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266 | * @param type The primitive type. Must be one of {@link OsmPrimitiveType#NODE NODE}, {@link OsmPrimitiveType#WAY WAY},
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267 | * {@link OsmPrimitiveType#RELATION RELATION}
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268 | * @param idPackage the package of ids
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269 | * @return the request string
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270 | */
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271 | protected String buildRequestString(final OsmPrimitiveType type, Set<Long> idPackage) {
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272 | return type.getAPIName() + "s?" + type.getAPIName() + "s=" + Utils.join(",", idPackage);
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273 | }
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274 |
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275 | protected void rememberNodesOfIncompleteWaysToLoad(DataSet from) {
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276 | for (Way w: from.getWays()) {
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277 | if (w.hasIncompleteNodes()) {
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278 | for (Node n: w.getNodes()) {
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279 | if (n.isIncomplete()) {
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280 | nodes.add(n.getId());
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281 | }
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282 | }
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283 | }
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284 | }
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285 | }
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286 |
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287 | /**
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288 | * merges the dataset <code>from</code> to {@link #outputDataSet}.
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289 | *
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290 | * @param from the other dataset
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291 | */
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292 | protected void merge(DataSet from) {
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293 | final DataSetMerger visitor = new DataSetMerger(outputDataSet, from);
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294 | visitor.merge();
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295 | }
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296 |
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297 | /**
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298 | * fetches a set of ids of a given {@link OsmPrimitiveType} from the server
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299 | *
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300 | * @param ids the set of ids
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301 | * @param type The primitive type. Must be one of {@link OsmPrimitiveType#NODE NODE}, {@link OsmPrimitiveType#WAY WAY},
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302 | * {@link OsmPrimitiveType#RELATION RELATION}
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303 | * @param progressMonitor progress monitor
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304 | * @throws OsmTransferException if an error occurs while communicating with the API server
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305 | */
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306 | protected void fetchPrimitives(Set<Long> ids, OsmPrimitiveType type, ProgressMonitor progressMonitor) throws OsmTransferException {
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307 | String msg;
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308 | final String baseUrl = getBaseUrl();
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309 | switch (type) {
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310 | // CHECKSTYLE.OFF: SingleSpaceSeparator
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311 | case NODE: msg = tr("Fetching a package of nodes from ''{0}''", baseUrl); break;
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312 | case WAY: msg = tr("Fetching a package of ways from ''{0}''", baseUrl); break;
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313 | case RELATION: msg = tr("Fetching a package of relations from ''{0}''", baseUrl); break;
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314 | // CHECKSTYLE.ON: SingleSpaceSeparator
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315 | default: throw new AssertionError();
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316 | }
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317 | progressMonitor.setTicksCount(ids.size());
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318 | progressMonitor.setTicks(0);
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319 | // The complete set containing all primitives to fetch
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320 | Set<Long> toFetch = new HashSet<>(ids);
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321 | // Build a list of fetchers that will download smaller sets containing only MAX_IDS_PER_REQUEST (200) primitives each.
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322 | // we will run up to MAX_DOWNLOAD_THREADS concurrent fetchers.
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323 | int threadsNumber = Main.pref.getInteger("osm.download.threads", OsmApi.MAX_DOWNLOAD_THREADS);
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324 | threadsNumber = Utils.clamp(threadsNumber, 1, OsmApi.MAX_DOWNLOAD_THREADS);
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325 | final ExecutorService exec = Executors.newFixedThreadPool(
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326 | threadsNumber, Utils.newThreadFactory(getClass() + "-%d", Thread.NORM_PRIORITY));
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327 | CompletionService<FetchResult> ecs = new ExecutorCompletionService<>(exec);
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328 | List<Future<FetchResult>> jobs = new ArrayList<>();
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329 | while (!toFetch.isEmpty()) {
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330 | jobs.add(ecs.submit(new Fetcher(type, extractIdPackage(toFetch), progressMonitor)));
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331 | }
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332 | // Run the fetchers
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333 | for (int i = 0; i < jobs.size() && !isCanceled(); i++) {
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334 | progressMonitor.subTask(msg + "... " + progressMonitor.getTicks() + '/' + progressMonitor.getTicksCount());
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335 | try {
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336 | FetchResult result = ecs.take().get();
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337 | if (result.missingPrimitives != null) {
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338 | missingPrimitives.addAll(result.missingPrimitives);
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339 | }
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340 | if (result.dataSet != null && !isCanceled()) {
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341 | rememberNodesOfIncompleteWaysToLoad(result.dataSet);
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342 | merge(result.dataSet);
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343 | }
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344 | } catch (InterruptedException | ExecutionException e) {
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345 | Main.error(e);
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346 | }
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347 | }
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348 | exec.shutdown();
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349 | // Cancel requests if the user chose to
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350 | if (isCanceled()) {
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351 | for (Future<FetchResult> job : jobs) {
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352 | job.cancel(true);
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353 | }
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354 | }
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355 | }
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356 |
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357 | /**
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358 | * invokes one or more Multi Gets to fetch the {@link OsmPrimitive}s and replies
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359 | * the dataset of retrieved primitives. Note that the dataset includes non visible primitives too!
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360 | * In contrast to a simple Get for a node, a way, or a relation, a Multi Get always replies
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361 | * the latest version of the primitive (if any), even if the primitive is not visible (i.e. if
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362 | * visible==false).
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363 | *
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364 | * Invoke {@link #getMissingPrimitives()} to get a list of primitives which have not been
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365 | * found on the server (the server response code was 404)
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366 | *
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367 | * @return the parsed data
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368 | * @throws OsmTransferException if an error occurs while communicating with the API server
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369 | * @see #getMissingPrimitives()
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370 | *
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371 | */
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372 | @Override
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373 | public DataSet parseOsm(ProgressMonitor progressMonitor) throws OsmTransferException {
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374 | int n = nodes.size() + ways.size() + relations.size();
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375 | progressMonitor.beginTask(trn("Downloading {0} object from ''{1}''",
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376 | "Downloading {0} objects from ''{1}''", n, n, OsmApi.getOsmApi().getBaseUrl()));
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377 | try {
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378 | missingPrimitives = new HashSet<>();
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379 | if (isCanceled()) return null;
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380 | fetchPrimitives(ways, OsmPrimitiveType.WAY, progressMonitor);
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381 | if (isCanceled()) return null;
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382 | fetchPrimitives(nodes, OsmPrimitiveType.NODE, progressMonitor);
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383 | if (isCanceled()) return null;
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384 | fetchPrimitives(relations, OsmPrimitiveType.RELATION, progressMonitor);
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385 | if (outputDataSet != null) {
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386 | outputDataSet.deleteInvisible();
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387 | }
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388 | return outputDataSet;
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389 | } finally {
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390 | progressMonitor.finishTask();
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391 | }
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392 | }
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393 |
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394 | /**
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395 | * replies the set of ids of all primitives for which a fetch request to the
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396 | * server was submitted but which are not available from the server (the server
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397 | * replied a return code of 404)
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398 | *
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399 | * @return the set of ids of missing primitives
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400 | */
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401 | public Set<PrimitiveId> getMissingPrimitives() {
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402 | return missingPrimitives;
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403 | }
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404 |
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405 | /**
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406 | * Whether this reader fetches nodes when loading ways, or members when loading relations.
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407 | *
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408 | * @return {@code true} if the reader recurses down
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409 | */
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410 | protected boolean recursesDown() {
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411 | return false;
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412 | }
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413 |
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414 | /**
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415 | * The class holding the results given by {@link Fetcher}.
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416 | * It is only a wrapper of the resulting {@link DataSet} and the collection of {@link PrimitiveId} that could not have been loaded.
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417 | */
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418 | protected static class FetchResult {
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419 |
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420 | /**
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421 | * The resulting data set
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422 | */
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423 | public final DataSet dataSet;
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424 |
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425 | /**
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426 | * The collection of primitive ids that could not have been loaded
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427 | */
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428 | public final Set<PrimitiveId> missingPrimitives;
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429 |
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430 | /**
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431 | * Constructs a {@code FetchResult}
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432 | * @param dataSet The resulting data set
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433 | * @param missingPrimitives The collection of primitive ids that could not have been loaded
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434 | */
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435 | public FetchResult(DataSet dataSet, Set<PrimitiveId> missingPrimitives) {
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436 | this.dataSet = dataSet;
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437 | this.missingPrimitives = missingPrimitives;
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438 | }
|
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439 | }
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440 |
|
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441 | /**
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442 | * The class that actually download data from OSM API.
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443 | * Several instances of this class are used by {@link MultiFetchServerObjectReader} (one per set of primitives to fetch).
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444 | * The inheritance of {@link OsmServerReader} is only explained by the need to have a distinct OSM connection by {@code Fetcher} instance.
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445 | * @see FetchResult
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446 | */
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447 | protected class Fetcher extends OsmServerReader implements Callable<FetchResult> {
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448 |
|
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449 | private final Set<Long> pkg;
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450 | private final OsmPrimitiveType type;
|
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451 | private final ProgressMonitor progressMonitor;
|
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452 |
|
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453 | /**
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454 | * Constructs a {@code Fetcher}
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455 | * @param type The primitive type. Must be one of {@link OsmPrimitiveType#NODE NODE}, {@link OsmPrimitiveType#WAY WAY},
|
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456 | * {@link OsmPrimitiveType#RELATION RELATION}
|
---|
457 | * @param idsPackage The set of primitives ids to fetch
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458 | * @param progressMonitor The progress monitor
|
---|
459 | */
|
---|
460 | public Fetcher(OsmPrimitiveType type, Set<Long> idsPackage, ProgressMonitor progressMonitor) {
|
---|
461 | this.pkg = idsPackage;
|
---|
462 | this.type = type;
|
---|
463 | this.progressMonitor = progressMonitor;
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---|
464 | }
|
---|
465 |
|
---|
466 | @Override
|
---|
467 | public DataSet parseOsm(ProgressMonitor progressMonitor) throws OsmTransferException {
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468 | // This method is implemented because of the OsmServerReader inheritance, but not used,
|
---|
469 | // as the main target of this class is the call() method.
|
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470 | return fetch(progressMonitor).dataSet;
|
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471 | }
|
---|
472 |
|
---|
473 | @Override
|
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474 | public FetchResult call() throws Exception {
|
---|
475 | return fetch(progressMonitor);
|
---|
476 | }
|
---|
477 |
|
---|
478 | /**
|
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479 | * fetches the requested primitives and updates the specified progress monitor.
|
---|
480 | * @param progressMonitor the progress monitor
|
---|
481 | * @return the {@link FetchResult} of this operation
|
---|
482 | * @throws OsmTransferException if an error occurs while communicating with the API server
|
---|
483 | */
|
---|
484 | protected FetchResult fetch(ProgressMonitor progressMonitor) throws OsmTransferException {
|
---|
485 | try {
|
---|
486 | return multiGetIdPackage(type, pkg, progressMonitor);
|
---|
487 | } catch (OsmApiException e) {
|
---|
488 | if (e.getResponseCode() == HttpURLConnection.HTTP_NOT_FOUND) {
|
---|
489 | Main.info(tr("Server replied with response code 404, retrying with an individual request for each object."));
|
---|
490 | return singleGetIdPackage(type, pkg, progressMonitor);
|
---|
491 | } else {
|
---|
492 | throw e;
|
---|
493 | }
|
---|
494 | }
|
---|
495 | }
|
---|
496 |
|
---|
497 | @Override
|
---|
498 | protected String getBaseUrl() {
|
---|
499 | return MultiFetchServerObjectReader.this.getBaseUrl();
|
---|
500 | }
|
---|
501 |
|
---|
502 | /**
|
---|
503 | * invokes a Multi Get for a set of ids and a given {@link OsmPrimitiveType}.
|
---|
504 | * The retrieved primitives are merged to {@link #outputDataSet}.
|
---|
505 | *
|
---|
506 | * @param type The primitive type. Must be one of {@link OsmPrimitiveType#NODE NODE}, {@link OsmPrimitiveType#WAY WAY},
|
---|
507 | * {@link OsmPrimitiveType#RELATION RELATION}
|
---|
508 | * @param pkg the package of ids
|
---|
509 | * @param progressMonitor progress monitor
|
---|
510 | * @return the {@link FetchResult} of this operation
|
---|
511 | * @throws OsmTransferException if an error occurs while communicating with the API server
|
---|
512 | */
|
---|
513 | protected FetchResult multiGetIdPackage(OsmPrimitiveType type, Set<Long> pkg, ProgressMonitor progressMonitor)
|
---|
514 | throws OsmTransferException {
|
---|
515 | String request = buildRequestString(type, pkg);
|
---|
516 | FetchResult result = null;
|
---|
517 | try (InputStream in = getInputStream(request, NullProgressMonitor.INSTANCE)) {
|
---|
518 | if (in == null) return null;
|
---|
519 | progressMonitor.subTask(tr("Downloading OSM data..."));
|
---|
520 | try {
|
---|
521 | result = new FetchResult(OsmReader.parseDataSet(in, progressMonitor.createSubTaskMonitor(pkg.size(), false)), null);
|
---|
522 | } catch (IllegalDataException e) {
|
---|
523 | throw new OsmTransferException(e);
|
---|
524 | }
|
---|
525 | } catch (IOException ex) {
|
---|
526 | Main.warn(ex);
|
---|
527 | }
|
---|
528 | return result;
|
---|
529 | }
|
---|
530 |
|
---|
531 | /**
|
---|
532 | * invokes a Multi Get for a single id and a given {@link OsmPrimitiveType}.
|
---|
533 | * The retrieved primitive is merged to {@link #outputDataSet}.
|
---|
534 | *
|
---|
535 | * @param type The primitive type. Must be one of {@link OsmPrimitiveType#NODE NODE}, {@link OsmPrimitiveType#WAY WAY},
|
---|
536 | * {@link OsmPrimitiveType#RELATION RELATION}
|
---|
537 | * @param id the id
|
---|
538 | * @param progressMonitor progress monitor
|
---|
539 | * @return the {@link DataSet} resulting of this operation
|
---|
540 | * @throws OsmTransferException if an error occurs while communicating with the API server
|
---|
541 | */
|
---|
542 | protected DataSet singleGetId(OsmPrimitiveType type, long id, ProgressMonitor progressMonitor) throws OsmTransferException {
|
---|
543 | String request = buildRequestString(type, Collections.singleton(id));
|
---|
544 | DataSet result = null;
|
---|
545 | try (InputStream in = getInputStream(request, NullProgressMonitor.INSTANCE)) {
|
---|
546 | if (in == null) return null;
|
---|
547 | progressMonitor.subTask(tr("Downloading OSM data..."));
|
---|
548 | try {
|
---|
549 | result = OsmReader.parseDataSet(in, progressMonitor.createSubTaskMonitor(1, false));
|
---|
550 | } catch (IllegalDataException e) {
|
---|
551 | throw new OsmTransferException(e);
|
---|
552 | }
|
---|
553 | } catch (IOException ex) {
|
---|
554 | Main.warn(ex);
|
---|
555 | }
|
---|
556 | return result;
|
---|
557 | }
|
---|
558 |
|
---|
559 | /**
|
---|
560 | * invokes a sequence of Multi Gets for individual ids in a set of ids and a given {@link OsmPrimitiveType}.
|
---|
561 | * The retrieved primitives are merged to {@link #outputDataSet}.
|
---|
562 | *
|
---|
563 | * This method is used if one of the ids in pkg doesn't exist (the server replies with return code 404).
|
---|
564 | * If the set is fetched with this method it is possible to find out which of the ids doesn't exist.
|
---|
565 | * Unfortunately, the server does not provide an error header or an error body for a 404 reply.
|
---|
566 | *
|
---|
567 | * @param type The primitive type. Must be one of {@link OsmPrimitiveType#NODE NODE}, {@link OsmPrimitiveType#WAY WAY},
|
---|
568 | * {@link OsmPrimitiveType#RELATION RELATION}
|
---|
569 | * @param pkg the set of ids
|
---|
570 | * @param progressMonitor progress monitor
|
---|
571 | * @return the {@link FetchResult} of this operation
|
---|
572 | * @throws OsmTransferException if an error occurs while communicating with the API server
|
---|
573 | */
|
---|
574 | protected FetchResult singleGetIdPackage(OsmPrimitiveType type, Set<Long> pkg, ProgressMonitor progressMonitor)
|
---|
575 | throws OsmTransferException {
|
---|
576 | FetchResult result = new FetchResult(new DataSet(), new HashSet<PrimitiveId>());
|
---|
577 | String baseUrl = OsmApi.getOsmApi().getBaseUrl();
|
---|
578 | for (long id : pkg) {
|
---|
579 | try {
|
---|
580 | String msg;
|
---|
581 | switch (type) {
|
---|
582 | // CHECKSTYLE.OFF: SingleSpaceSeparator
|
---|
583 | case NODE: msg = tr("Fetching node with id {0} from ''{1}''", id, baseUrl); break;
|
---|
584 | case WAY: msg = tr("Fetching way with id {0} from ''{1}''", id, baseUrl); break;
|
---|
585 | case RELATION: msg = tr("Fetching relation with id {0} from ''{1}''", id, baseUrl); break;
|
---|
586 | // CHECKSTYLE.ON: SingleSpaceSeparator
|
---|
587 | default: throw new AssertionError();
|
---|
588 | }
|
---|
589 | progressMonitor.setCustomText(msg);
|
---|
590 | result.dataSet.mergeFrom(singleGetId(type, id, progressMonitor));
|
---|
591 | } catch (OsmApiException e) {
|
---|
592 | if (e.getResponseCode() == HttpURLConnection.HTTP_NOT_FOUND) {
|
---|
593 | Main.info(tr("Server replied with response code 404 for id {0}. Skipping.", Long.toString(id)));
|
---|
594 | result.missingPrimitives.add(new SimplePrimitiveId(id, type));
|
---|
595 | } else {
|
---|
596 | throw e;
|
---|
597 | }
|
---|
598 | }
|
---|
599 | }
|
---|
600 | return result;
|
---|
601 | }
|
---|
602 | }
|
---|
603 | }
|
---|