Status HandleRequest(const RouteParameters &route_parameters,
osrm::json::Object &json_result) override final
{
if (max_locations_viaroute > 0 &&
(static_cast<int>(route_parameters.coordinates.size()) > max_locations_viaroute))
{
json_result.values["status_message"] =
"Number of entries " + std::to_string(route_parameters.coordinates.size()) +
" is higher than current maximum (" + std::to_string(max_locations_viaroute) + ")";
return Status::Error;
}
if (!check_all_coordinates(route_parameters.coordinates))
{
json_result.values["status_message"] = "Invalid coordinates";
return Status::Error;
}
const auto &input_bearings = route_parameters.bearings;
if (input_bearings.size() > 0 &&
route_parameters.coordinates.size() != input_bearings.size())
{
json_result.values["status_message"] =
"Number of bearings does not match number of coordinate";
return Status::Error;
}
std::vector<PhantomNodePair> phantom_node_pair_list(route_parameters.coordinates.size());
const bool checksum_OK = (route_parameters.check_sum == facade->GetCheckSum());
for (const auto i : osrm::irange<std::size_t>(0, route_parameters.coordinates.size()))
{
if (checksum_OK && i < route_parameters.hints.size() &&
!route_parameters.hints[i].empty())
{
ObjectEncoder::DecodeFromBase64(route_parameters.hints[i],
phantom_node_pair_list[i].first);
if (phantom_node_pair_list[i].first.is_valid(facade->GetNumberOfNodes()))
{
continue;
}
}
const int bearing = input_bearings.size() > 0 ? input_bearings[i].first : 0;
const int range = input_bearings.size() > 0
? (input_bearings[i].second ? *input_bearings[i].second : 10)
: 180;
phantom_node_pair_list[i] = facade->NearestPhantomNodeWithAlternativeFromBigComponent(
route_parameters.coordinates[i], bearing, range);
// we didn't found a fitting node, return error
if (!phantom_node_pair_list[i].first.is_valid(facade->GetNumberOfNodes()))
{
json_result.values["status_message"] =
std::string("Could not find a matching segment for coordinate ") +
std::to_string(i);
return Status::NoSegment;
}
BOOST_ASSERT(phantom_node_pair_list[i].first.is_valid(facade->GetNumberOfNodes()));
BOOST_ASSERT(phantom_node_pair_list[i].second.is_valid(facade->GetNumberOfNodes()));
}
auto snapped_phantoms = snapPhantomNodes(phantom_node_pair_list);
InternalRouteResult raw_route;
auto build_phantom_pairs = [&raw_route](const PhantomNode &first_node,
const PhantomNode &second_node)
{
raw_route.segment_end_coordinates.push_back(PhantomNodes{first_node, second_node});
};
osrm::for_each_pair(snapped_phantoms, build_phantom_pairs);
if (1 == raw_route.segment_end_coordinates.size())
{
if (route_parameters.alternate_route)
{
search_engine_ptr->alternative_path(raw_route.segment_end_coordinates.front(),
raw_route);
}
else
{
search_engine_ptr->direct_shortest_path(raw_route.segment_end_coordinates,
route_parameters.uturns, raw_route);
}
}
else
{
search_engine_ptr->shortest_path(raw_route.segment_end_coordinates,
route_parameters.uturns, raw_route);
}
bool no_route = INVALID_EDGE_WEIGHT == raw_route.shortest_path_length;
std::unique_ptr<BaseDescriptor<DataFacadeT>> descriptor;
switch (descriptor_table.get_id(route_parameters.output_format))
{
case 1:
descriptor = osrm::make_unique<GPXDescriptor<DataFacadeT>>(facade);
break;
// case 2:
// descriptor = osrm::make_unique<GEOJSONDescriptor<DataFacadeT>>();
// break;
default:
descriptor = osrm::make_unique<JSONDescriptor<DataFacadeT>>(facade);
break;
}
descriptor->SetConfig(route_parameters);
descriptor->Run(raw_route, json_result);
// we can only know this after the fact, different SCC ids still
// allow for connection in one direction.
if (no_route)
{
auto first_component_id = snapped_phantoms.front().component.id;
auto not_in_same_component =
std::any_of(snapped_phantoms.begin(), snapped_phantoms.end(),
[first_component_id](const PhantomNode &node)
{
return node.component.id != first_component_id;
});
if (not_in_same_component)
{
json_result.values["status_message"] = "Impossible route between points";
return Status::EmptyResult;
}
}
else
{
json_result.values["status_message"] = "Found route between points";
}
return Status::Ok;
}
Status HandleRequest(const RouteParameters &route_parameters,
osrm::json::Object &json_result) override final
{
if (max_locations_trip > 0 &&
(static_cast<int>(route_parameters.coordinates.size()) > max_locations_trip))
{
json_result.values["status_message"] =
"Number of entries " + std::to_string(route_parameters.coordinates.size()) +
" is higher than current maximum (" + std::to_string(max_locations_trip) + ")";
return Status::Error;
}
// check if all inputs are coordinates
if (!check_all_coordinates(route_parameters.coordinates))
{
json_result.values["status_message"] = "Invalid coordinates";
return Status::Error;
}
const auto &input_bearings = route_parameters.bearings;
if (input_bearings.size() > 0 &&
route_parameters.coordinates.size() != input_bearings.size())
{
json_result.values["status_message"] =
"Number of bearings does not match number of coordinates";
return Status::Error;
}
// get phantom nodes
auto phantom_node_list = GetPhantomNodes(route_parameters);
if (phantom_node_list.size() != route_parameters.coordinates.size())
{
BOOST_ASSERT(phantom_node_list.size() < route_parameters.coordinates.size());
json_result.values["status_message"] =
std::string("Could not find a matching segment for coordinate ") +
std::to_string(phantom_node_list.size());
return Status::NoSegment;
}
const auto number_of_locations = phantom_node_list.size();
// compute the distance table of all phantom nodes
const auto result_table = DistTableWrapper<EdgeWeight>(
*search_engine_ptr->distance_table(phantom_node_list, phantom_node_list),
number_of_locations);
if (result_table.size() == 0)
{
return Status::Error;
}
const constexpr std::size_t BF_MAX_FEASABLE = 10;
BOOST_ASSERT_MSG(result_table.size() == number_of_locations * number_of_locations,
"Distance Table has wrong size");
// get scc components
SCC_Component scc = SplitUnaccessibleLocations(number_of_locations, result_table);
using NodeIDIterator = typename std::vector<NodeID>::const_iterator;
std::vector<std::vector<NodeID>> route_result;
route_result.reserve(scc.GetNumberOfComponents());
TIMER_START(TRIP_TIMER);
// run Trip computation for every SCC
for (std::size_t k = 0; k < scc.GetNumberOfComponents(); ++k)
{
const auto component_size = scc.range[k + 1] - scc.range[k];
BOOST_ASSERT_MSG(component_size > 0, "invalid component size");
std::vector<NodeID> scc_route;
NodeIDIterator start = std::begin(scc.component) + scc.range[k];
NodeIDIterator end = std::begin(scc.component) + scc.range[k + 1];
if (component_size > 1)
{
if (component_size < BF_MAX_FEASABLE)
{
scc_route =
osrm::trip::BruteForceTrip(start, end, number_of_locations, result_table);
}
else
{
scc_route = osrm::trip::FarthestInsertionTrip(start, end, number_of_locations,
result_table);
}
// use this output if debugging of route is needed:
// SimpleLogger().Write() << "Route #" << k << ": " << [&scc_route]()
// {
// std::string s = "";
// for (auto x : scc_route)
// {
// s += std::to_string(x) + " ";
// }
// return s;
// }();
}
else
{
scc_route = std::vector<NodeID>(start, end);
}
route_result.push_back(std::move(scc_route));
}
// compute all round trip routes
std::vector<InternalRouteResult> comp_route;
comp_route.reserve(route_result.size());
for (auto &elem : route_result)
{
comp_route.push_back(ComputeRoute(phantom_node_list, route_parameters, elem));
}
TIMER_STOP(TRIP_TIMER);
// prepare JSON output
// create a json object for every trip
osrm::json::Array trip;
for (std::size_t i = 0; i < route_result.size(); ++i)
{
std::unique_ptr<BaseDescriptor<DataFacadeT>> descriptor =
osrm::make_unique<JSONDescriptor<DataFacadeT>>(facade);
descriptor->SetConfig(route_parameters);
osrm::json::Object scc_trip;
// set permutation output
SetLocPermutationOutput(route_result[i], scc_trip);
// set viaroute output
descriptor->Run(comp_route[i], scc_trip);
trip.values.push_back(std::move(scc_trip));
}
if (trip.values.empty())
{
json_result.values["status_message"] = "Cannot find trips";
return Status::EmptyResult;
}
json_result.values["trips"] = std::move(trip);
json_result.values["status_message"] = "Found trips";
return Status::Ok;
}
Status HandleRequest(const RouteParameters &route_parameters,
osrm::json::Object &json_result) final override
{
// enforce maximum number of locations for performance reasons
if (max_locations_map_matching > 0 &&
static_cast<int>(route_parameters.coordinates.size()) > max_locations_map_matching)
{
json_result.values["status_message"] = "Too many coodindates";
return Status::Error;
}
// check number of parameters
if (!check_all_coordinates(route_parameters.coordinates))
{
json_result.values["status_message"] = "Invalid coordinates";
return Status::Error;
}
std::vector<double> sub_trace_lengths;
const auto &input_coords = route_parameters.coordinates;
const auto &input_timestamps = route_parameters.timestamps;
const auto &input_bearings = route_parameters.bearings;
if (input_timestamps.size() > 0 && input_coords.size() != input_timestamps.size())
{
json_result.values["status_message"] =
"Number of timestamps does not match number of coordinates";
return Status::Error;
}
if (input_bearings.size() > 0 && input_coords.size() != input_bearings.size())
{
json_result.values["status_message"] =
"Number of bearings does not match number of coordinates";
return Status::Error;
}
// enforce maximum number of locations for performance reasons
if (static_cast<int>(input_coords.size()) < 2)
{
json_result.values["status_message"] = "At least two coordinates needed";
return Status::Error;
}
const auto candidates_lists = getCandidates(
input_coords, input_bearings, route_parameters.gps_precision, sub_trace_lengths);
if (candidates_lists.size() != input_coords.size())
{
BOOST_ASSERT(candidates_lists.size() < input_coords.size());
json_result.values["status_message"] =
std::string("Could not find a matching segment for coordinate ") +
std::to_string(candidates_lists.size());
return Status::NoSegment;
}
// setup logging if enabled
if (osrm::json::Logger::get())
osrm::json::Logger::get()->initialize("matching");
// call the actual map matching
osrm::matching::SubMatchingList sub_matchings;
search_engine_ptr->map_matching(candidates_lists, input_coords, input_timestamps,
route_parameters.matching_beta,
route_parameters.gps_precision, sub_matchings);
osrm::json::Array matchings;
for (auto &sub : sub_matchings)
{
// classify result
if (route_parameters.classify)
{
double trace_length =
sub_trace_lengths[sub.indices.back()] - sub_trace_lengths[sub.indices.front()];
TraceClassification classification =
classify(trace_length, sub.length,
(sub.indices.back() - sub.indices.front() + 1) - sub.nodes.size());
if (classification.first == ClassifierT::ClassLabel::POSITIVE)
{
sub.confidence = classification.second;
}
else
{
sub.confidence = 1 - classification.second;
}
}
BOOST_ASSERT(sub.nodes.size() > 1);
// FIXME we only run this to obtain the geometry
// The clean way would be to get this directly from the map matching plugin
InternalRouteResult raw_route;
PhantomNodes current_phantom_node_pair;
for (unsigned i = 0; i < sub.nodes.size() - 1; ++i)
{
current_phantom_node_pair.source_phantom = sub.nodes[i];
current_phantom_node_pair.target_phantom = sub.nodes[i + 1];
BOOST_ASSERT(current_phantom_node_pair.source_phantom.is_valid());
BOOST_ASSERT(current_phantom_node_pair.target_phantom.is_valid());
raw_route.segment_end_coordinates.emplace_back(current_phantom_node_pair);
}
search_engine_ptr->shortest_path(
raw_route.segment_end_coordinates,
std::vector<bool>(raw_route.segment_end_coordinates.size() + 1, true), raw_route);
BOOST_ASSERT(raw_route.shortest_path_length != INVALID_EDGE_WEIGHT);
matchings.values.emplace_back(submatchingToJSON(sub, route_parameters, raw_route));
}
if (osrm::json::Logger::get())
osrm::json::Logger::get()->render("matching", json_result);
json_result.values["matchings"] = matchings;
if (sub_matchings.empty())
{
json_result.values["status_message"] = "Cannot find matchings";
return Status::EmptyResult;
}
json_result.values["status_message"] = "Found matchings";
return Status::Ok;
}
