#5325 Return way ID with sign meaning direction

docs/http.md

@@ -700,7 +700,7 @@ Annotation of the whole route leg with fine-grained information about each segme
 - `duration`: The duration between each pair of coordinates, in seconds.  Does not include the duration of any turns.
 - `datasources`: The index of the datasource for the speed between each pair of coordinates. `0` is the default profile, other values are supplied via `--segment-speed-file` to `osrm-contract` or `osrm-customize`.  String-like names are in the `metadata.datasource_names` array.
 - `nodes`: The OSM node ID for each coordinate along the route, excluding the first/last user-supplied coordinates
-- `ways`: The OSM way ID for each pair of neighbour nodes in the list of nodes
+- `ways`: The OSM way ID for each pair of neighbor nodes in the list of nodes, with a sign. The sign means direction. A positive sign means moving in the direction of the way, while negative means moving in the opposite direction.
 - `weight`: The weights between each pair of coordinates.  Does not include any turn costs.
 - `speed`: Convenience field, calculation of `distance / duration` rounded to one decimal place
 - `metadata`: Metadata related to other annotations
@@ -715,7 +715,7 @@ Annotation of the whole route leg with fine-grained information about each segme
   "datasources": [1,0,0,0,1],
   "metadata": { "datasource_names": ["traffic","lua profile","lua profile","lua profile","traffic"] },
   "nodes": [49772551,49772552,49786799,49786800,49786801,49786802],
-  "ways": [130764281,130764281,6056749,6056749,6056749],
+  "ways": [130764281,130764281,-6056749,-6056749,-6056749],
   "weight": [15,15,40,15,15]
 }
 ```

include/engine/api/flatbuffers/fbresult_generated.h

@@ -462,7 +462,7 @@ struct AnnotationT : public flatbuffers::NativeTable {
   std::vector<uint32_t> duration;
   std::vector<uint32_t> datasources;
   std::vector<uint64_t> nodes;
-  std::vector<uint64_t> ways;
+  std::vector<int64_t> ways;
   std::vector<uint32_t> weight;
   std::vector<float> speed;
   std::unique_ptr<osrm::engine::api::fbresult::MetadataT> metadata;
@@ -494,8 +494,8 @@ struct Annotation FLATBUFFERS_FINAL_CLASS : private flatbuffers::Table {
   const flatbuffers::Vector<uint64_t> *nodes() const {
     return GetPointer<const flatbuffers::Vector<uint64_t> *>(VT_NODES);
   }
-  const flatbuffers::Vector<uint64_t> *ways() const {
+  const flatbuffers::Vector<int64_t> *ways() const {
-    return GetPointer<const flatbuffers::Vector<uint64_t> *>(VT_WAYS);
+    return GetPointer<const flatbuffers::Vector<int64_t> *>(VT_WAYS);
   }
   const flatbuffers::Vector<uint32_t> *weight() const {
     return GetPointer<const flatbuffers::Vector<uint32_t> *>(VT_WEIGHT);
@@ -546,7 +546,7 @@ struct AnnotationBuilder {
   void add_nodes(flatbuffers::Offset<flatbuffers::Vector<uint64_t>> nodes) {
     fbb_.AddOffset(Annotation::VT_NODES, nodes);
   }
-  void add_ways(flatbuffers::Offset<flatbuffers::Vector<uint64_t>> ways) {
+  void add_ways(flatbuffers::Offset<flatbuffers::Vector<int64_t>> ways) {
     fbb_.AddOffset(Annotation::VT_WAYS, ways);
   }
   void add_weight(flatbuffers::Offset<flatbuffers::Vector<uint32_t>> weight) {
@@ -576,7 +576,7 @@ inline flatbuffers::Offset<Annotation> CreateAnnotation(
     flatbuffers::Offset<flatbuffers::Vector<uint32_t>> duration = 0,
     flatbuffers::Offset<flatbuffers::Vector<uint32_t>> datasources = 0,
     flatbuffers::Offset<flatbuffers::Vector<uint64_t>> nodes = 0,
-    flatbuffers::Offset<flatbuffers::Vector<uint64_t>> ways = 0,
+    flatbuffers::Offset<flatbuffers::Vector<int64_t>> ways = 0,
     flatbuffers::Offset<flatbuffers::Vector<uint32_t>> weight = 0,
     flatbuffers::Offset<flatbuffers::Vector<float>> speed = 0,
     flatbuffers::Offset<osrm::engine::api::fbresult::Metadata> metadata = 0) {
@@ -598,7 +598,7 @@ inline flatbuffers::Offset<Annotation> CreateAnnotationDirect(
     const std::vector<uint32_t> *duration = nullptr,
     const std::vector<uint32_t> *datasources = nullptr,
     const std::vector<uint64_t> *nodes = nullptr,
-    const std::vector<uint64_t> *ways = nullptr,
+    const std::vector<int64_t> *ways = nullptr,
     const std::vector<uint32_t> *weight = nullptr,
     const std::vector<float> *speed = nullptr,
     flatbuffers::Offset<osrm::engine::api::fbresult::Metadata> metadata = 0) {
@@ -606,7 +606,7 @@ inline flatbuffers::Offset<Annotation> CreateAnnotationDirect(
   auto duration__ = duration ? _fbb.CreateVector<uint32_t>(*duration) : 0;
   auto datasources__ = datasources ? _fbb.CreateVector<uint32_t>(*datasources) : 0;
   auto nodes__ = nodes ? _fbb.CreateVector<uint64_t>(*nodes) : 0;
-  auto ways__ = ways ? _fbb.CreateVector<uint64_t>(*ways) : 0;
+  auto ways__ = ways ? _fbb.CreateVector<int64_t>(*ways) : 0;
   auto weight__ = weight ? _fbb.CreateVector<uint32_t>(*weight) : 0;
   auto speed__ = speed ? _fbb.CreateVector<float>(*speed) : 0;
   return osrm::engine::api::fbresult::CreateAnnotation(

include/engine/api/flatbuffers/route.fbs

@@ -10,7 +10,7 @@ table Annotation {
     duration: [uint];
     datasources: [uint];
     nodes: [ulong];
-    ways: [ulong];
+    ways: [long];
     weight: [uint];
     speed: [float];
     metadata: Metadata;

include/engine/api/route_api.hpp

@@ -503,13 +503,13 @@ class RouteAPI : public BaseAPI
                 nodes.emplace_back(static_cast<uint64_t>(node_id));
             }
         }
-        std::vector<uint64_t> ways;
+        std::vector<int64_t> ways;
         if (requested_annotations & RouteParameters::AnnotationsType::Ways)
         {
             ways.reserve(leg_geometry.osm_way_ids.size());
             for (const auto way_id : leg_geometry.osm_way_ids)
             {
-                ways.emplace_back(static_cast<uint64_t>(way_id));
+                ways.emplace_back(static_cast<int64_t>(way_id));
             }
         }
         auto nodes_vector = fb_result.CreateVector(nodes);
@@ -849,7 +849,7 @@ class RouteAPI : public BaseAPI
                     ways.values.reserve(leg_geometry.osm_way_ids.size());
                     for (const auto way_id : leg_geometry.osm_way_ids)
                     {
-                        ways.values.push_back(static_cast<std::uint64_t>(way_id));
+                        ways.values.push_back(static_cast<std::int64_t>(way_id));
                     }
                     annotation.values["ways"] = std::move(ways);
                 }

include/engine/datafacade/datafacade_base.hpp

@@ -59,7 +59,9 @@ class BaseDataFacade
 
     using OSMWayForwardRange =
         boost::iterator_range<extractor::SegmentDataView::SegmentOSMWayVector::const_iterator>;
-    using OSMWayReverseRange = boost::reversed_range<const OSMWayForwardRange>;
+    using OSMWayNegateForwardRange =
+        boost::transformed_range<std::negate<OSMWayIDDir>, const OSMWayForwardRange>;
+    using OSMWayReverseRange = boost::reversed_range<const OSMWayNegateForwardRange>;
 
     using WeightForwardRange =
         boost::iterator_range<extractor::SegmentDataView::SegmentWeightVector::const_iterator>;

include/engine/guidance/assemble_geometry.hpp

@@ -161,10 +161,19 @@ inline LegGeometry assembleGeometry(const datafacade::BaseDataFacade &facade,
     const auto target_segment_end_coordinate =
         target_node.fwd_segment_position + (reversed_target ? 0 : 1);
     const auto target_geometry = facade.GetUncompressedForwardGeometry(target_geometry_id);
-    const auto target_osm_way_ids = facade.GetUncompressedForwardWayIDs(target_geometry_id);
     geometry.osm_node_ids.push_back(
         facade.GetOSMNodeIDOfNode(target_geometry(target_segment_end_coordinate)));
-    geometry.osm_way_ids.push_back(target_osm_way_ids(target_node.fwd_segment_position));
+    if (reversed_target)
+    {
+        const auto target_osm_way_ids = facade.GetUncompressedReverseWayIDs(target_geometry_id);
+        geometry.osm_way_ids.push_back(
+            target_osm_way_ids(target_osm_way_ids.size() - target_node.fwd_segment_position - 1));
+    }
+    else
+    {
+        const auto target_osm_way_ids = facade.GetUncompressedForwardWayIDs(target_geometry_id);
+        geometry.osm_way_ids.push_back(target_osm_way_ids(target_node.fwd_segment_position));
+    }
 
     BOOST_ASSERT(geometry.segment_distances.size() == geometry.segment_offsets.size() - 1);
     BOOST_ASSERT(geometry.locations.size() > geometry.segment_distances.size());

include/engine/guidance/leg_geometry.hpp

@@ -34,7 +34,7 @@ struct LegGeometry
     // original OSM node IDs for each coordinate
     std::vector<OSMNodeID> osm_node_ids;
     // original OSM way IDs between every pair of nodes
-    std::vector<OSMWayID> osm_way_ids;
+    std::vector<OSMWayIDDir> osm_way_ids;
 
     // Per-coordinate metadata
     struct Annotation

include/engine/internal_route_result.hpp

@@ -27,7 +27,7 @@ struct PathData
     // from edge-based-node id
     NodeID from_edge_based_node;
     // OSM Way ID of the edge immediately followed by via node
-    OSMWayID osm_way_id;
+    OSMWayIDDir osm_way_id;
     // the internal OSRM id of the OSM node id that is the via node of the turn
     NodeID turn_via_node;
     // name of the street that leads to the turn

include/engine/routing_algorithms/routing_base.hpp

@@ -144,7 +144,7 @@ void annotatePath(const FacadeT &facade,
 
     // datastructures to hold extracted data from geometry
     std::vector<NodeID> id_vector;
-    std::vector<OSMWayID> osm_way_id_vector;
+    std::vector<OSMWayIDDir> osm_way_id_vector;
     std::vector<SegmentWeight> weight_vector;
     std::vector<SegmentDuration> duration_vector;
     std::vector<DatasourceID> datasource_vector;

include/extractor/node_based_edge.hpp

@@ -20,7 +20,7 @@ namespace extractor
 // while CompressedEdgeContainer::ZipEdges and store it in the segment data
 // to use when building found path annotations
 using OSMWayIDMapKey = std::pair<NodeID, NodeID>;
-using OSMWayIDMap = std::map<OSMWayIDMapKey, OSMWayID>;
+using OSMWayIDMap = std::map<OSMWayIDMapKey, OSMWayIDDir>;
 
 // Flags describing the class of the road. This data is used during creation of graphs/guidance
 // generation but is not available in annotation/navigation

include/extractor/segment_data_container.hpp

@@ -10,10 +10,12 @@
 
 #include <boost/filesystem/path.hpp>
 #include <boost/range/adaptor/reversed.hpp>
+#include <boost/range/adaptor/transformed.hpp>
 #include <boost/range/iterator_range.hpp>
 
 #include <unordered_map>
 
+#include <functional>
 #include <string>
 #include <vector>
 
@@ -56,7 +58,7 @@ template <storage::Ownership Ownership> class SegmentDataContainerImpl
     using DirectionalGeometryID = std::uint32_t;
     using SegmentOffset = std::uint32_t;
     using SegmentNodeVector = Vector<NodeID>;
-    using SegmentOSMWayVector = Vector<OSMWayID>;
+    using SegmentOSMWayVector = Vector<OSMWayIDDir>;
     using SegmentWeightVector = PackedVector<SegmentWeight, SEGMENT_WEIGHT_BITS>;
     using SegmentDurationVector = PackedVector<SegmentDuration, SEGMENT_DURATION_BITS>;
     using SegmentDatasourceVector = Vector<DatasourceID>;
@@ -102,7 +104,9 @@ template <storage::Ownership Ownership> class SegmentDataContainerImpl
 
     auto GetReverseOSMWayIDs(const DirectionalGeometryID id)
     {
-        return boost::adaptors::reverse(GetForwardOSMWayIDs(id));
+        // return boost::adaptors::reverse(GetForwardOSMWayIDs(id));
+        return boost::adaptors::reverse(
+            boost::adaptors::transform(GetForwardOSMWayIDs(id), std::negate<OSMWayIDDir>()));
     }
 
     auto GetForwardDurations(const DirectionalGeometryID id)
@@ -176,7 +180,9 @@ template <storage::Ownership Ownership> class SegmentDataContainerImpl
 
     auto GetReverseOSMWayIDs(const DirectionalGeometryID id) const
     {
-        return boost::adaptors::reverse(GetForwardOSMWayIDs(id));
+        // return boost::adaptors::reverse(GetForwardOSMWayIDs(id));
+        return boost::adaptors::reverse(
+            boost::adaptors::transform(GetForwardOSMWayIDs(id), std::negate<OSMWayIDDir>()));
     }
 
     auto GetForwardDurations(const DirectionalGeometryID id) const

include/storage/view_factory.hpp

@@ -134,7 +134,7 @@ inline auto make_segment_data_view(const SharedDataIndex &index, const std::stri
 
     auto num_entries = index.GetBlockEntries(name + "/nodes");
 
-    auto osm_way_list = make_vector_view<OSMWayID>(index, name + "/osm_ways");
+    auto osm_way_list = make_vector_view<OSMWayIDDir>(index, name + "/osm_ways");
 
     extractor::SegmentDataView::SegmentWeightVector fwd_weight_list(
         make_vector_view<extractor::SegmentDataView::SegmentWeightVector::block_type>(

include/util/typedefs.hpp

@@ -53,6 +53,7 @@ using OSMNodeID = osrm::Alias<std::uint64_t, tag::osm_node_id>;
 static_assert(std::is_pod<OSMNodeID>(), "OSMNodeID is not a valid alias");
 using OSMWayID = osrm::Alias<std::uint64_t, tag::osm_way_id>;
 static_assert(std::is_pod<OSMWayID>(), "OSMWayID is not a valid alias");
+using OSMWayIDDir = std::int64_t;
 
 using DuplicatedNodeID = std::uint64_t;
 using RestrictionID = std::uint64_t;

src/extractor/compressed_edge_container.cpp

@@ -282,7 +282,7 @@ unsigned CompressedEdgeContainer::ZipEdges(const EdgeID f_edge_id,
 
     const auto &first_node = reverse_bucket.back();
     auto prev_node_id = first_node.node_id;
-    auto osm_way_id = SPECIAL_OSM_WAYID;
+    OSMWayIDDir osm_way_id = 0;
     constexpr DatasourceID LUA_SOURCE = 0;
 
     segment_data->nodes.emplace_back(first_node.node_id);
@@ -304,21 +304,19 @@ unsigned CompressedEdgeContainer::ZipEdges(const EdgeID f_edge_id,
         if (node_id != prev_node_id)
         {
             auto find_way_id = osm_way_id_map.find(OSMWayIDMapKey(prev_node_id, node_id));
-            if (find_way_id == osm_way_id_map.cend())
+            if (find_way_id != osm_way_id_map.cend())
             {
-                find_way_id = osm_way_id_map.find(OSMWayIDMapKey(node_id, prev_node_id));
+                segment_data->osm_ways.emplace_back(osm_way_id = find_way_id->second);
+                util::Log(logDEBUG) << "zipped_geometry_id: " << zipped_geometry_id << " "
+                                    << prev_node_id << "->" << node_id << " = " << osm_way_id;
             }
-            if (find_way_id == osm_way_id_map.cend())
+            else
             {
                 util::Log(logERROR)
                     << "OSM Way ID not found for (nbg) nodes, it should never be happened: "
                     << prev_node_id << "<-x->" << node_id;
                 segment_data->osm_ways.emplace_back(osm_way_id);
             }
-            else
-            {
-                segment_data->osm_ways.emplace_back(osm_way_id = find_way_id->second);
-            }
         }
         else
         {
@@ -341,21 +339,19 @@ unsigned CompressedEdgeContainer::ZipEdges(const EdgeID f_edge_id,
     if (node_id != prev_node_id)
     {
         auto find_way_id = osm_way_id_map.find(OSMWayIDMapKey(prev_node_id, node_id));
-        if (find_way_id == osm_way_id_map.cend())
+        if (find_way_id != osm_way_id_map.cend())
         {
-            find_way_id = osm_way_id_map.find(OSMWayIDMapKey(node_id, prev_node_id));
+            segment_data->osm_ways.emplace_back(osm_way_id = find_way_id->second);
+            util::Log(logDEBUG) << "zipped_geometry_id: " << zipped_geometry_id << " "
+                                << prev_node_id << "->" << node_id << " = " << osm_way_id;
         }
-        if (find_way_id == osm_way_id_map.cend())
+        else
         {
             util::Log(logERROR)
                 << "OSM Way ID not found for (nbg) nodes, it should never be happened: "
                 << prev_node_id << "<-x->" << node_id;
             segment_data->osm_ways.emplace_back(osm_way_id);
         }
-        else
-        {
-            segment_data->osm_ways.emplace_back(osm_way_id = find_way_id->second);
-        }
     }
     else
     {

src/extractor/extractor.cpp

@@ -635,8 +635,32 @@ Extractor::ParseOSMData(ScriptingEnvironment &scripting_environment,
     // Fill OSM Way ID Lookup Map to use it later
     for (auto edge : extraction_containers.all_edges_list)
     {
-        osm_way_id_map[OSMWayIDMapKey(edge.result.source, edge.result.target)] =
+        OSMWayIDDir way_id = edge.result.osm_way_id.__value;
-            edge.result.osm_way_id;
+        OSMNodeID osm_source_id = edge.result.osm_source_id;
+        OSMNodeID osm_target_id = edge.result.osm_target_id;
+        if ((edge.result.source < edge.result.target && osm_source_id > osm_target_id) ||
+            (edge.result.source > edge.result.target && osm_source_id < osm_target_id))
+        {
+            // Bogus criteria?
+            way_id = -way_id;
+            std::swap(osm_source_id, osm_target_id);
+        }
+        if (edge.result.flags.forward)
+        {
+            osm_way_id_map[OSMWayIDMapKey(edge.result.source, edge.result.target)] = way_id;
+            util::Log(logDEBUG)
+                << "osm_way_id_map: " << edge.result.source << "->" << edge.result.target << " = "
+                << osm_way_id_map[OSMWayIDMapKey(edge.result.source, edge.result.target)] << " ("
+                << osm_source_id << "->" << osm_target_id << ")";
+        }
+        if (edge.result.flags.backward)
+        {
+            osm_way_id_map[OSMWayIDMapKey(edge.result.target, edge.result.source)] = -way_id;
+            util::Log(logDEBUG)
+                << "osm_way_id_map: " << edge.result.target << "->" << edge.result.source << " = "
+                << osm_way_id_map[OSMWayIDMapKey(edge.result.target, edge.result.source)] << " ("
+                << osm_target_id << "->" << osm_source_id << ")";
+        }
     }
 
     TIMER_STOP(extracting);

unit_tests/library/route.cpp

@@ -602,7 +602,7 @@ BOOST_AUTO_TEST_CASE(test_manual_setting_of_annotations_property_new_api)
 }
 
 using NodePair = std::pair<osmium::unsigned_object_id_type, osmium::unsigned_object_id_type>;
-using NodePairToWayIDMap = std::map<NodePair, osmium::unsigned_object_id_type>;
+using NodePairToWayIDMap = std::map<NodePair, int64_t>;
 
 NodePairToWayIDMap read_node_pair_to_way_id_map(osmium::io::Reader &osm)
 {
@@ -611,11 +611,11 @@ NodePairToWayIDMap read_node_pair_to_way_id_map(osmium::io::Reader &osm)
         NodePairToWayIDMap ret;
         void way(const osmium::Way &way)
         {
-            auto first = osmium::unsigned_object_id_type(-1);
+            osmium::unsigned_object_id_type first = 0;
             for (const auto &n : way.nodes())
             {
                 const auto second = n.positive_ref();
-                if (first != osmium::unsigned_object_id_type(-1))
+                if (first != 0)
                 {
                     ret[{first, second}] = way.id();
                 }
@@ -700,15 +700,20 @@ LonLatVector check_route_annotated_ways(std::vector<osrm::util::Coordinate> &coo
         for (nodes_it++; nodes_it != nodes.cend(); nodes_it++, ways_it++)
         {
             osmium::unsigned_object_id_type second = nodes_it->get<json::Number>().value;
-            osmium::unsigned_object_id_type way_id = ways_it->get<json::Number>().value;
+            int64_t way_id = ways_it->get<json::Number>().value;
             auto found = node_pair_to_way_id_map.find(NodePair(first, second));
+            auto reverse = false;
             if (found == node_pair_to_way_id_map.end())
+            {
+                reverse = true;
                 found = node_pair_to_way_id_map.find(NodePair(second, first));
+            }
             BOOST_CHECK_MESSAGE(found != node_pair_to_way_id_map.end(),
                                 "The node pair not found: " << first << "<->" << second);
-            BOOST_CHECK_MESSAGE(found->second == way_id,
+            int64_t found_way_id = reverse ? -found->second : found->second;
+            BOOST_CHECK_MESSAGE(found_way_id == way_id,
                                 "The node pair way doesn't correspond: " << first << "<->" << second
-                                                                         << "=" << found->second
+                                                                         << "=" << found_way_id
                                                                          << "=?=" << way_id);
             first = second;
         }

unit_tests/mocks/mock_datafacade.hpp

@@ -66,7 +66,7 @@ class MockBaseDataFacade : public engine::datafacade::BaseDataFacade
     }
     OSMWayForwardRange GetUncompressedForwardWayIDs(const EdgeID /* id */) const override
     {
-        static OSMWayID data[] = {0, 1, 2, 3};
+        static OSMWayIDDir data[] = {0, 1, 2, 3};
         static extractor::SegmentDataView::SegmentOSMWayVector ways(data, 4);
         return boost::make_iterator_range(ways.cbegin(), ways.cend());
     }