Cron auth middleware

The cron auth middleware provides a simple cron authentication mechanism so that the Webtask cron daemon is able to make authenticated requests but third parties cannot.

Usage

To use the cron auth middleware leverages the fact that the Webtask cron daemon will invoke cron webtasks with an Authentication header having a bearer token corresponding to the underlying webtask token of that cron job.

1. Set the wt-node-dependencies metadata property to the stringified JSON of an object having @webtask/middleware-compiler and @webtask/cron-auth-middleware properties whose values are the latest version of the @webtask/middleware-compiler module and this module, respectively.

``json
{"@webtask/middleware-compiler":"1.1.0","@webtask/cron-auth-middleware":"1.1.0"}
`

2. Set the wt-compiler metadata property on your webtask to @webtask/middleware-compiler.

3. Set (or add to) the wt-middleware metadata property of your webtask to contain a comma-separated list containing @webtask/cron-auth-middleware.

4. Schedule the webtask to run periodically and note that requests lacking an appropriate Authorization header will fail with a 401` response.