dabreegster/rust_connectivity_pt_tiles

Getting started

Install rust:

curl https://sh.rustup.rs -sSf | sh && \
source "$HOME/.cargo/env"

1. Run ./download_input_json.py once to download input data

2. Flip the if false part of main() in src/main.rs to true so the files are serialised and all nodes within 120s are found for all start nodes

3. Run withcargo run --release to serialise all files and find nearby nodes. End the process once the API is listening

4. Flip the if false part of main() in src/main.rs to false to run without serialising any files

Then build the docker container, or run with cargo run --release

On querying the API

Check it's listening:

curl http://0.0.0.0:7328/

To specify the number of top scoring node clusters returned, change TOP_CLUSTERS_COUNT in src/shared.rs

The payload send to the API consists of 3 lists; each should be of length 1; subsequent values will be ignored

Run PT algorithm on one start node and save the output:

wget -O- --post-data='{"start_nodes_user_input": [9380647], "init_travel_times_user_input": [16], "trip_start_seconds": 28800}' \
  --header='Content-Type:application/json' \
  'http://0.0.0.0:7328/floodfill_pt/' > example_returned_payload_May1st_API.txt
  
# Returns larger payload: 4Bb
wget -O- --post-data='{"start_nodes_user_input": [2780647], "init_travel_times_user_input": [16], "trip_start_seconds": 28800}' \
  --header='Content-Type:application/json' \
  'http://0.0.0.0:7328/floodfill_pt/' > example_returned_payload_May1st_API.txt
  
# Start point close to Bethnal Green tube station. Returns 20Mb payload
wget -O- --post-data='{"start_nodes_user_input": [5850631], "init_travel_times_user_input": [14], "trip_start_seconds": 28800}' \
  --header='Content-Type:application/json' \
  'http://0.0.0.0:7328/floodfill_pt/' > example_returned_payload_May1st_API.txt

Deploying with Docker

To make and run docker image.

docker build --progress=plain -t rust_connectivity_pt_tiles:latest .
docker run -p 0.0.0.0:7328:7328 rust_connectivity_pt_tiles:latest