Shawn Tabrizi
30951822ba
* initial idea * update frame_support * update a bunch more * add ord * adjust RuntimeDbWeight * frame_system builds * re-export * frame_support tests pass * frame_executive compile * frame_executive builds * frame_system tests passing * pallet-utility tests pass * fix a bunch of pallets * more * phragmen * state-trie-migration * scheduler and referenda * pallet-election-provider-multi-phase * aura * staking * more * babe * balances * bunch more * sudo * transaction-payment * asset-tx-payment * last pallets * fix alliance merge * fix node template runtime * fix pallet-contracts cc @athei * fix node runtime * fix compile on runtime-benchmarks feature * comment * fix frame-support-test * fix more tests * weight regex * frame system works * fix a bunch * more * more * more * more * more * more fixes * update templates * fix contracts benchmarks * Update lib.rs * Update lib.rs * fix ui * make scalar saturating mul const * more const functions * scalar div * refactor using constant functions * move impl * fix overhead template * use compactas * Update lib.rs
Offchain Worker Example Pallet
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.
This pallet serves as an example showcasing Substrate off-chain worker and is not meant to be used in production.
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