Class: GTFS::Realtime

Inherits:
Object
  • Object
show all
Defined in:
lib/gtfs/realtime.rb,
lib/gtfs/realtime/stop.rb,
lib/gtfs/realtime/trip.rb,
lib/gtfs/realtime/route.rb,
lib/gtfs/realtime/shape.rb,
lib/gtfs/realtime/nearby.rb,
lib/gtfs/realtime/version.rb,
lib/gtfs/realtime/database.rb,
lib/gtfs/realtime/stop_time.rb,
lib/gtfs/realtime/trip_update.rb,
lib/gtfs/realtime/configuration.rb,
lib/gtfs/realtime/service_alert.rb,
lib/gtfs/realtime/stop_time_update.rb,
lib/gtfs/realtime/vehicle_position.rb

Defined Under Namespace

Modules: Nearby Classes: Configuration, Database, Model, Route, ServiceAlert, Shape, Stop, StopTime, StopTimeUpdate, Trip, TripUpdate, VehiclePosition

Constant Summary collapse

VERSION = 
"0.2.0"

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.configuration ⇒ Object

Returns the value of attribute configuration.



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# File 'lib/gtfs/realtime.rb', line 26

def configuration
  @configuration
end

Class Method Details

.configure {|configuration| ... } ⇒ Object

Yields:



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# File 'lib/gtfs/realtime.rb', line 32

def configure
  yield(configuration)

  load_static_feed!
  refresh_realtime_feed!
end

.load_static_feed!(force: false) ⇒ Object 



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# File 'lib/gtfs/realtime.rb', line 39

def load_static_feed!(force: false)
  return if !force && GTFS::Realtime::Route.count > 0

  static_data = GTFS::Source.build(@configuration.static_feed)

  GTFS::Realtime::Model.db.transaction do
    GTFS::Realtime::Route.dataset.delete
    GTFS::Realtime::Route.multi_insert(
      static_data.routes.collect do |route|
        {
          id: route.id.strip,
          short_name: route.short_name,
          long_name: route.long_name,
          url: route.url
        }
      end
    )

    GTFS::Realtime::Shape.dataset.delete
    GTFS::Realtime::Shape.multi_insert(
      static_data.shapes.collect do |shape|
        {
          id: shape.id.strip,
          sequence: shape.pt_sequence,
          latitude: shape.pt_lat.to_f,
          longitude: shape.pt_lon.to_f
        }
      end
    )

    GTFS::Realtime::Stop.dataset.delete
    GTFS::Realtime::Stop.multi_insert(
      static_data.stops.collect do |stop|
        {
          id: stop.id.strip,
          name: stop.name,
          latitude: stop.lat.to_f,
          longitude: stop.lon.to_f
        }
      end
    )

    GTFS::Realtime::StopTime.dataset.delete
    GTFS::Realtime::StopTime.multi_insert(
      static_data.stop_times.collect do |stop_time|
        {
          stop_id: stop_time.stop_id.strip,
          trip_id: stop_time.trip_id.strip,
          arrival_time: stop_time.arrival_time,
          departure_time: stop_time.departure_time,
          stop_sequence: stop_time.stop_sequence.to_i
        }
      end
    )

    GTFS::Realtime::Trip.dataset.delete
    GTFS::Realtime::Trip.multi_insert(
      static_data.trips.collect do |trip|
        {
          id: trip.id.strip,
          headsign: trip.headsign.strip,
          route_id: trip.route_id.strip,
          service_id: trip.service_id.strip,
          shape_id: trip.shape_id.strip
        }
      end
    )
  end
end

.refresh_realtime_feed! ⇒ Object 



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# File 'lib/gtfs/realtime.rb', line 109

def refresh_realtime_feed!
  trip_updates = get_entities(@configuration.trip_updates_feed)
  vehicle_positions = get_entities(@configuration.vehicle_positions_feed)
  service_alerts = get_entities(@configuration.service_alerts_feed)

  GTFS::Realtime::Model.db.transaction do
    GTFS::Realtime::TripUpdate.dataset.delete
    GTFS::Realtime::TripUpdate.multi_insert(
      trip_updates.collect do |trip_update|
        {
          id: trip_update.id.strip,
          trip_id: trip_update.trip_update.trip.trip_id.strip,
          route_id: trip_update.trip_update.trip.route_id.strip
        }
      end
    )

    GTFS::Realtime::StopTimeUpdate.dataset.delete
    GTFS::Realtime::StopTimeUpdate.multi_insert(
      trip_updates.collect do |trip_update|
        trip_update.trip_update.stop_time_update.collect do |stop_time_update|
          {
            trip_update_id: trip_update.id.strip,
            stop_id: stop_time_update.stop_id.strip,
            arrival_delay: stop_time_update.arrival ? stop_time_update.arrival.delay : nil,
            arrival_time: stop_time_update.arrival ? stop_time_update.arrival.time : nil,
            departure_delay: stop_time_update.departure ? stop_time_update.departure.delay : nil,
            departure_time: stop_time_update.departure ? stop_time_update.departure.time : nil,
          }
        end
      end.flatten
    )

    GTFS::Realtime::VehiclePosition.dataset.delete
    GTFS::Realtime::VehiclePosition.multi_insert(
      vehicle_positions.collect do |vehicle|
        {
          trip_id: vehicle.vehicle.trip.trip_id.strip,
          stop_id: vehicle.vehicle.stop_id.strip,
          latitude: vehicle.vehicle.position.latitude.to_f,
          longitude: vehicle.vehicle.position.longitude.to_f,
          bearing: vehicle.vehicle.position.bearing.to_f,
          timestamp: vehicle.vehicle.timestamp
        }
      end
    )

    GTFS::Realtime::ServiceAlert.dataset.delete
    GTFS::Realtime::ServiceAlert.multi_insert(
      service_alerts.collect do |service_alert|
        {
          stop_id: service_alert.alert.informed_entity.first.stop_id.strip,
          header_text: service_alert.alert.header_text.translation.first.text,
          description_text: service_alert.alert.description_text.translation.first.text,
          start_time: service_alert.alert.active_period.first.start,
          end_time: service_alert.alert.active_period.first.end
        }
      end
    )
  end
end