philcali / pits-data

The data plane API for the Pi In The Sky application

Pi In The Sky - Data

The data plane API for the Pi In The Sky application

Architecture

The high level dataflow travels from right to left, starting at the browser:

1. The user requests the pits-console application at the domain (AWS provided to custom) to the CDN.
2. Once the application loads, the user must login through AWS Cognito User Pool
3. The application makes an uathorized connect to the pits-data websocket server.
4. The connection session is stored in PitsResources DynamoDB provided by pits-infra. Additionally, a command to wake the pits-device application using an AWS IoT MQTT message
5. The message is receied by aws-iot-device-client via MQTT and written as a JSON file on the device
6. The JSON file mutation is handled as an internal event through inotify.
7. The pinthesky daemon processes the event and wakes the picamera device.
8. The camera feed is bumped directly into a websocket
9. The feed is forward to the browser session and ultimately rendered as real-time in the browser.