Igor Matuszewski
028f3d2674
* Backport paritytech/substrate#7381 * Bring back genesis storage build in aura/timestamp To not change spec version, see https://github.com/paritytech/substrate/pull/7686#discussion_r540032743 * Backport paritytech/substrate#7238 * Backport paritytech/substrate#7395 * Bump impl_version * Fix UI tests and bump trybuild dep See https://github.com/rust-lang/rust/pull/73996 Backports: https://github.com/paritytech/substrate/pull/7764 https://github.com/paritytech/substrate/pull/7656 * Partially backport paritytech/substrate#7838 * Release frame-support with a dep compilation fix * Bump patch level for remaining crates This is done because at the time of writing cargo-unleash does not fully support partial workspace publishing and mixes both local and crates.io versions of the packages, leading to errors in the release check workflow. * Backport paritytech/substrate#7854 ...to fix compilation error when using futures-* v0.3.9. * Adding Changelog entry for patch release Co-authored-by: Bastian Köcher <git@kchr.de> Co-authored-by: Benjamin Kampmann <ben@parity.io>
Offchain Worker Example Module
The Offchain Worker Example: A simple pallet demonstrating concepts, APIs and structures common to most offchain workers.
Run cargo doc --package pallet-example-offchain-worker --open to view this module's
documentation.
Overview
In this example we are going to build a very simplistic, naive and definitely NOT
production-ready oracle for BTC/USD price.
Offchain Worker (OCW) will be triggered after every block, fetch the current price
and prepare either signed or unsigned transaction to feed the result back on chain.
The on-chain logic will simply aggregate the results and store last 64 values to compute
the average price.
Additional logic in OCW is put in place to prevent spamming the network with both signed
and unsigned transactions, and custom UnsignedValidator makes sure that there is only
one unsigned transaction floating in the network.
License: Unlicense