Gets temporary S3 credentials to stage user-uploaded files.

Initiates the creation process from the staging S3 bucket into the user's tileset.

Uses tippecanoe to pre-generate vector tile layers, because Mapbox's online Uploader API does not offer control over generated zoom detail lev

Main loop which creates Uploader class instance, converts shapefiles or zipped shapefiles to WGS-84 projected GeoJSON, generates vector tile l

Conversion helper function uses ogr to project shapefiles and convert them to GeoJSON, and returns the filesystem path to the result.

Stages the user's file on S3. Returns the URL to the staged resource.

Unzipping helper function which unzips an archive of shapefile support files and returns the path to the primary shapefile.

High level function to upload a file object to Mapbox tileset Returns a response object where the json() is a dict with upload metadat

Packaging helper function which given a path to a shapefile, creates an archive of all of its support files (overwriting existing) and return

Constructs a Service object.

Get username from access token. Token contains base64 encoded JSON object with username.