This repository contains the Chainlink feed pallet as well as an example node showing how to integrate it in Substrate-based chains.

It also includes the pallet-chainlink for interacting with the Chainlink job-based oracle system.

The pallet is added to the runtime like any regular pallet (see tutorial). It then needs to be configured. See the pallet readme for details.

The usage is simple:

let feed = T::Oracle::feed(0.into()).ok_or(Error::<T>::FeedMissing)?;
let RoundData { answer, .. } = feed.latest_data();
do_something_with_answer(answer);

See the template pallet for a full example showing how to access a price feed.

substrate-node-example demonstrates how to use pallet-chainlink-feed end-to-end. To test:

• start the chain using make run-temp (for a temporary node which cleans up after itself)
• connect to the chain by pointing https://polkadot.js.org/apps/ (or a locally hosted version) to the local dev node
• specify the types by copying substrate-node-example/types.json into the input at Settings > Developer

You are now ready to send extrinsics to the pallet.