Occupancy Server

A part of CMU Library Occupancy project. Written in Python 3.

Configuration

Configuration is read from environment variables.

XTEA-CCM Encryption

Please change both ENCRYPT_KEY and AUTH_KEY environment variables to randomly generated octets. Note that for proper encryption and authentication, two should never be the same. Same values should be used for the sniffers.

Example: ENCRYPT_KEY="74 65 73 74 74 65 73 74 74 65 73 74 74 65 73 74"

DB Settings

Change DB_URI to point to your DB. If testing locally, use sqlite:///test.local.db.

Sniffer Settings

SNIFFER_MAX_INACTIVE_TIME represents the maximum interval in seconds that sniffers should report before considered as inactive.

OCCUPANCY_UPDATE_INTERVAL represents the interval in seconds that occupancy information is updated.

PROBE_REQUEST_LIFE represents the minimum life of probe requests in DB before wiped.

Initial System Set-Up

To add locations and sniffers to the system, manual DB editing is required.

TODO: DB editing tutorial.

Deploy Instructions

Heroku

The repository is ready to be deployed to Heroku without further changes.

Locally

Copy app.local.example.json to app.local.json, modify environment variables and run python3 run_local.py. Use Ctrl-C to kill.