osrm-backend/src/engine/engine.cpp

122 lines
3.6 KiB
C++

#include "engine/engine.hpp"
#include "engine/api/route_parameters.hpp"
#include "engine/engine_config.hpp"
#include "engine/status.hpp"
#include "engine/datafacade/process_memory_datafacade.hpp"
#include "engine/datafacade/shared_memory_datafacade.hpp"
#include "storage/shared_barriers.hpp"
#include "util/log.hpp"
#include <boost/assert.hpp>
#include <boost/interprocess/sync/named_condition.hpp>
#include <boost/interprocess/sync/scoped_lock.hpp>
#include <boost/interprocess/sync/sharable_lock.hpp>
#include <algorithm>
#include <fstream>
#include <memory>
#include <utility>
#include <vector>
namespace
{
// Abstracted away the query locking into a template function
// Works the same for every plugin.
template <typename ParameterT, typename PluginT, typename ResultT>
osrm::engine::Status
RunQuery(const std::unique_ptr<osrm::engine::DataWatchdog> &watchdog,
const std::shared_ptr<osrm::engine::datafacade::BaseDataFacade> &facade,
const ParameterT &parameters,
PluginT &plugin,
ResultT &result)
{
if (watchdog)
{
BOOST_ASSERT(!facade);
auto lock_and_facade = watchdog->GetDataFacade();
return plugin.HandleRequest(lock_and_facade.second, parameters, result);
}
BOOST_ASSERT(facade);
return plugin.HandleRequest(facade, parameters, result);
}
} // anon. ns
namespace osrm
{
namespace engine
{
Engine::Engine(const EngineConfig &config)
: lock(config.use_shared_memory ? std::make_unique<storage::SharedBarriers>()
: std::unique_ptr<storage::SharedBarriers>()),
route_plugin(config.max_locations_viaroute), //
table_plugin(config.max_locations_distance_table), //
nearest_plugin(config.max_results_nearest), //
trip_plugin(config.max_locations_trip), //
match_plugin(config.max_locations_map_matching), //
tile_plugin() //
{
if (config.use_shared_memory)
{
if (!DataWatchdog::TryConnect())
{
throw util::exception(
std::string(
"No shared memory blocks found, have you forgotten to run osrm-datastore?") +
SOURCE_REF);
}
watchdog = std::make_unique<DataWatchdog>();
BOOST_ASSERT(watchdog);
}
else
{
if (!config.storage_config.IsValid())
{
throw util::exception("Invalid file paths given!" + SOURCE_REF);
}
immutable_data_facade =
std::make_shared<datafacade::ProcessMemoryDataFacade>(config.storage_config);
}
}
Status Engine::Route(const api::RouteParameters &params, util::json::Object &result) const
{
return RunQuery(watchdog, immutable_data_facade, params, route_plugin, result);
}
Status Engine::Table(const api::TableParameters &params, util::json::Object &result) const
{
return RunQuery(watchdog, immutable_data_facade, params, table_plugin, result);
}
Status Engine::Nearest(const api::NearestParameters &params, util::json::Object &result) const
{
return RunQuery(watchdog, immutable_data_facade, params, nearest_plugin, result);
}
Status Engine::Trip(const api::TripParameters &params, util::json::Object &result) const
{
return RunQuery(watchdog, immutable_data_facade, params, trip_plugin, result);
}
Status Engine::Match(const api::MatchParameters &params, util::json::Object &result) const
{
return RunQuery(watchdog, immutable_data_facade, params, match_plugin, result);
}
Status Engine::Tile(const api::TileParameters &params, std::string &result) const
{
return RunQuery(watchdog, immutable_data_facade, params, tile_plugin, result);
}
} // engine ns
} // osrm ns