Kactus, a GTFS-rt cache

Kactus (Kyler's Automated Cache for Transport Unification & Synchronisation) is a cache server written in Rust and using Redis. It is open source under the GPL 3.0 license. Please submit issues & pull requests!

Hosted by Catenary Transit Initatives Data Centres

Use Kactus hosted by Catenary's servers! https://kactus.catenarymaps.org/gtfsrt/?feed=[onestopid]&category=[category]

Check uptime: https://stats.uptimerobot.com/xWx7zCm4p0

Onestop Feed IDs should be realtime feed ids from transitland/transitland-atlas aka https://transit.land/

Valid categories are

• vehicles
• trips
• alerts

The api returns 404 if the category for the feed doesn't exist.

Example of valid url https://kactus.catenarymaps.org/gtfsrt/?feed=f-metro~losangeles~bus~rt&category=vehicles

Knowing valid feeds and categories

The list of avaliable feeds is at https://kactus.catenarymaps.org/gtfsrttimes

Debugging by hand

https://kactus.catenarymaps.org/gtfsrtasjson/?feed=[onestopid]&category=[category]

or use raw for Rust-info https://kactus.catenarymaps.org/gtfsrtasjson/?feed=[onestopid]&category=[category]&raw=true like so https://kactus.catenarymaps.org/gtfsrtasjson/?feed=f-metro~losangeles~bus~rt&category=vehicles&raw=true

Installation

Install dependencies

arch linux:

sudo pacman -S redis protobuf-compiler; sudo systemctl start redis-server;

ubuntu:

sudo apt install protobuf-compiler build-essential gcc pkg-config libssl-dev postgresql unzip wget g++
sudo systemctl start redis-server

Run the ingest engine

cargo run --bin ingestv2

Install Systemd Service

sudo cp systemd* /etc/systemd/system/
sudo systemctl daemon-reload
sudo systemctl enable --now kactus* zotgtfsrt.service

urls.csv config

If the auth_type is set to url, then any instance of PASSWORD in the urls will be replaced with the value of auth_password

options for ingest file

you can specify the urls file to use, but by default, it is urls.csv

cargo run --bin ingestv2 -- --urls public-urls.csv

you can add the threads parameter

cargo run --bin ingestv2 -- --urls public-urls.csv --threads 10

you can also add the timeout parameter in milliseconds, the default being 15000 ms aka 15 seconds.

---timeout 10000

Run the special metrolink program using Kyler's "Request in Perfect Time" algorithm

Basically this skirts around the 429 rate limit error by sending requests almost exactly 30 seconds after the last request.

First, paste your metrolink key into the file metrolink-key.txt

Then run

cargo run --bin ingestmetrolink

For Contributors

For unix users, running git config core.hooksPath .githooks is required. Pull requests will not be merged without this.

No option exists for Windows users at the moment. Please try WSL Ubuntu for the moment. We're working on adding this.