Coredump Space API Implementation

This is our implementation of the Space API v0.13 and v14 in Rust. We're using the spaceapi and spaceapi-server crates to simplify the implementation.

Space API Documentation: https://spaceapi.io/documentation

Usage

To get the current SpaceAPI status object:

GET /

To update a sensor value, send a PUT request to the sensor endpoint:

PUT /sensors/<data_key>/ value=<value>

Examples for curl and HTTPie:

$ curl -v -X PUT -d value=42.1337 http://127.0.0.1:3000/sensors/raspi_temperature/
$ http --form put :3000/sensors/people_now_present/ value=3

Development

Basics

Use Cargo to build:

$ cargo build

Then you can start the spaceapi server:

$ cargo run

You can also specify a different ip or port:

$ cargo run -- -i 0.0.0.0 -p 1337

To specify another Redis instance than redis://127.0.0.1:6379/0, set the REDIS_HOST, REDIS_PORT and/or REDIS_DB env variables.

Logging

If you want to see logging, set the RUST_LOG env variable:

$ cargo build
$ RUST_LOG=warn target/debug/coredump_status

You can also show logs only from a specific crate:

$ RUST_LOG=spaceapi_server=debug cargo run

Datastores

Redis

To use the redis storage start the redis server:

$ redis-server

(...or start it using your favorite init daemon.)

You can access the database with the redis-cli tool:

% redis-cli
127.0.0.1:6379> SET people_now_present 1
OK
127.0.0.1:6379> GET people_now_present
"1"
127.0.0.1:6379> KEYS *
1) "people_now_present"

Schema

We currently store data in the following redis keys:

• people_now_present (integer)
• people_in_cyberspace (integer)
• raspi_temperature (float)
• room_temperature (float)

Docker Image

To build the docker image based on the current codebase:

$ docker build -t coredump/status:latest .

If you want to test this using a redis database, first launch a redis container:

$ docker run -d --name spaceapi-redis redis:7.0

Then launch a new container from the image:

$ export PORT=3000
$ docker run -d --name spaceapi -p 127.0.0.1:$PORT:3000 --link spaceapi-redis coredump/status

(If you don't need a datastore, you can also leave away the redis container and the --link argument.)

To stop it again:

$ docker stop spaceapi
$ docker stop spaceapi-redis

The docker image at https://hub.docker.com/r/coredump/status will be automatically rebuilt on every push to master.