https://github.com/smartcontractkit/chainlink-polkadot

https://github.com/smartcontractkit/chainlink-polkadot

Last synced: about 1 month ago
JSON representation

• Host: GitHub
• URL: https://github.com/smartcontractkit/chainlink-polkadot
• Owner: smartcontractkit
• License: other
• Archived: true
• Created: 2019-12-13T16:53:48.000Z (almost 5 years ago)
• Default Branch: master
• Last Pushed: 2023-09-06T19:50:58.000Z (over 1 year ago)
• Last Synced: 2024-01-25T03:03:23.837Z (11 months ago)
• Language: Go
• Size: 2.65 MB
• Stars: 138
• Watchers: 83
• Forks: 71
• Open Issues: 30
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-substrate - Chainlink Feed Pallet - Chainlink feed token interface. (FRAME Pallets)
• awesome-substrate - Chainlink Feed Pallet - Chainlink feed token interface. (FRAME Pallets)

README

        
# Chainlink-polkadot

This repository contains the [Chainlink](https://chain.link/) feed pallet as well as an example node showing how to integrate

it in [Substrate](https://www.substrate.io/)-based chains.

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

## How to integrate the Chainlink feed pallet into a runtime?

The pallet is added to the runtime like any regular pallet (see [tutorial](https://substrate.dev/docs/en/tutorials/add-a-pallet/)).

It then needs to be configured. See the [pallet readme](./pallet-chainlink-feed/README.md) for details.

The usage is simple:

```Rust

let feed = T::Oracle::feed(0.into()).ok_or(Error::::FeedMissing)?;

let RoundData { answer, .. } = feed.latest_data();

do_something_with_answer(answer);

```

See [the template pallet](./substrate-node-example/pallets/template/src/lib.rs) for a full example showing how to access a price feed.

## Run the example

`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.