osrm-backend/src/engine/plugins/table.cpp

85 lines
2.6 KiB
C++

#include "engine/plugins/table.hpp"
#include "engine/api/table_api.hpp"
#include "engine/api/table_parameters.hpp"
#include "engine/routing_algorithms/many_to_many.hpp"
#include "engine/search_engine_data.hpp"
#include "util/json_container.hpp"
#include "util/string_util.hpp"
#include <cstdlib>
#include <algorithm>
#include <memory>
#include <string>
#include <vector>
#include <boost/assert.hpp>
namespace osrm
{
namespace engine
{
namespace plugins
{
TablePlugin::TablePlugin(const int max_locations_distance_table)
: max_locations_distance_table(max_locations_distance_table)
{
}
Status TablePlugin::HandleRequest(const datafacade::ContiguousInternalMemoryDataFacadeBase &facade,
const RoutingAlgorithmsInterface &algorithms,
const api::TableParameters &params,
util::json::Object &result) const
{
if (!algorithms.HasManyToManySearch())
{
return Error("NotImplemented", "Many to many search is not implemented for the chosen search algorithm.", result);
}
BOOST_ASSERT(params.IsValid());
if (!CheckAllCoordinates(params.coordinates))
{
return Error("InvalidOptions", "Coordinates are invalid", result);
}
if (params.bearings.size() > 0 && params.coordinates.size() != params.bearings.size())
{
return Error(
"InvalidOptions", "Number of bearings does not match number of coordinates", result);
}
// Empty sources or destinations means the user wants all of them included, respectively
// The ManyToMany routing algorithm we dispatch to below already handles this perfectly.
const auto num_sources =
params.sources.empty() ? params.coordinates.size() : params.sources.size();
const auto num_destinations =
params.destinations.empty() ? params.coordinates.size() : params.destinations.size();
if (max_locations_distance_table > 0 &&
((num_sources * num_destinations) >
static_cast<std::size_t>(max_locations_distance_table * max_locations_distance_table)))
{
return Error("TooBig", "Too many table coordinates", result);
}
auto snapped_phantoms = SnapPhantomNodes(GetPhantomNodes(facade, params));
auto result_table =
algorithms.ManyToManySearch(snapped_phantoms, params.sources, params.destinations);
if (result_table.empty())
{
return Error("NoTable", "No table found", result);
}
api::TableAPI table_api{facade, params};
table_api.MakeResponse(result_table, snapped_phantoms, result);
return Status::Ok;
}
}
}
}