Datetime Scheduler

A module for unixtime based scheduling.

Overview

This pallet provides capability to dispatch schedules with a starting UTC time, optional ending UTC time, and periods consisting of multiples of year/month/week/day/hour/minute/second/ms. These scheduled dispatches may be named or anonymous and may be canceled.

Scheduling is done via chrono-light library.

NOTE: The scheduled calls will be dispatched with the default filter for the origin: namely frame_system::Config::BaseCallFilter for all origin except root which will get no filter. And not the filter contained in origin use to call fn schedule.

If a call is scheduled using proxy or whatever mechanism which adds filter, then those filter will not be used when dispatching the schedule call.

TODO

• backfill runs in case of downtime
• fix weights

Interface

Dispatchable Functions

• sync_scheduleds - recalculate scheduled wake triggers, accounting for potential clock drift.
• schedule - schedule a dispatch, which may be periodic, to occur at a specified block and with a specified priority.
• cancel - cancel a scheduled dispatch, specified by block number and index.
• schedule_named - augments the schedule interface with an additional Vec<u8> parameter that can be used for identification.
• cancel_named - the named complement to the cancel function.

License: Unlicensed

Substrate runtime wiring

Runtime utilizing this pallet is exemplified in substrate-node-playground.