Crate gtfs_realtime

Decoding and Encoding example GTFS data example

use prost::Message;
 
let url = "https://lbtgtfs.lbtransit.com/TMGTFSRealTimeWebService/Vehicle/VehiclePositions.pb";
let response = reqwest::get(url).await.unwrap();
let bytes = response.bytes().await.unwrap();
let data: Result<gtfs_realtime::FeedMessage, prost::DecodeError> = prost::Message::decode(bytes.as_ref());
let data = data.unwrap();
 
//encode back into protobuf
let rencoded = data.encode_to_vec();

Modules

alert

Nested message and enum types in Alert.

feed_header

Nested message and enum types in FeedHeader.

stop

Nested message and enum types in Stop.

translated_image

Nested message and enum types in TranslatedImage.

translated_string

Nested message and enum types in TranslatedString.

trip_descriptor

Nested message and enum types in TripDescriptor.

trip_modifications

Nested message and enum types in TripModifications.

trip_update

Nested message and enum types in TripUpdate.

vehicle_descriptor

Nested message and enum types in VehicleDescriptor.

vehicle_position

Nested message and enum types in VehiclePosition.

Structs

Alert

An alert, indicating some sort of incident in the public transit network.

EntitySelector

A selector for an entity in a GTFS feed.

FeedEntity

A definition (or update) of an entity in the transit feed.

FeedHeader

Metadata about a feed, included in feed messages.

FeedMessage

The contents of a feed message. A feed is a continuous stream of feed messages. Each message in the stream is obtained as a response to an appropriate HTTP GET request. A realtime feed is always defined with relation to an existing GTFS feed. All the entity ids are resolved with respect to the GTFS feed. Note that “required” and “optional” as stated in this file refer to Protocol Buffer cardinality, not semantic cardinality. See reference.md at https://github.com/google/transit/tree/master/gtfs-realtime for field semantic cardinality.

Position

A position.

ReplacementStop

NOTE: This field is still experimental, and subject to change. It may be formally adopted in the future.

Shape

Describes the physical path that a vehicle takes when it’s not part of the (CSV) GTFS, such as for a detour. Shapes belong to Trips, and consist of a sequence of shape points. Tracing the points in order provides the path of the vehicle. Shapes do not need to intercept the location of Stops exactly, but all Stops on a trip should lie within a small distance of the shape for that trip, i.e. close to straight line segments connecting the shape points NOTE: This message is still experimental, and subject to change. It may be formally adopted in the future.

Stop

Describes a stop which is served by trips. All fields are as described in the GTFS-Static specification. NOTE: This message is still experimental, and subject to change. It may be formally adopted in the future.

StopSelector

NOTE: This field is still experimental, and subject to change. It may be formally adopted in the future. Select a stop by stop sequence or by stop_id. At least one of the two values must be provided.

TimeRange

A time interval. The interval is considered active at time ‘t’ if ‘t’ is greater than or equal to the start time and less than the end time.

TranslatedImage

An internationalized image containing per-language versions of a URL linking to an image along with meta information Only one of the images from a message will be retained by consumers. The resolution proceeds as follows:

TranslatedString

An internationalized message containing per-language versions of a snippet of text or a URL. One of the strings from a message will be picked up. The resolution proceeds as follows:

TripDescriptor

A descriptor that identifies an instance of a GTFS trip, or all instances of a trip along a route.

TripModifications

NOTE: This field is still experimental, and subject to change. It may be formally adopted in the future.

TripUpdate

Realtime update of the progress of a vehicle along a trip. Depending on the value of ScheduleRelationship, a TripUpdate can specify:

VehicleDescriptor

Identification information for the vehicle performing the trip.

VehiclePosition

Realtime positioning information for a given vehicle.