A Substrate pallet to bridge from Filecoin to any blockchain built using the Substrate framework, including Polkadot parachains.
Here we need to configure filecoindot into our runtime first, see substrate-node-example for detail.
Generate an account with subkey for our offchain worker first
$ subkey generate
Secret phrase `brief outside human axis reveal boat warm amateur dish sample enroll moment` is account:
Secret seed: 0x4ebb14295f95e62a865a457629a8e6d96ef5f3cf1896a9624d2e91e09f4cdc65
Public key (hex): 0x0676a4b19c66b31e12d15fe31ccbc775d3d2cda6e1c8686e395118f808eaa118
Account ID: 0x0676a4b19c66b31e12d15fe31ccbc775d3d2cda6e1c8686e395118f808eaa118
SS58 Address: 5CDBPWWtnLTqSUSNvB5BGYMs23Vs8dDHwWpjWpebBRErZM9W
and then, post your account to the node
$ curl -X POST -vk 'http://localhost:9933' -H "Content-Type:application/json;charset=utf-8" \
-d '{
"jsonrpc":2.0,
"id":1,
"method":"author_insertKey",
"params": [
"fdot",
"0x4ebb14295f95e62a865a457629a8e6d96ef5f3cf1896a9624d2e91e09f4cdc65",
"0x0676a4b19c66b31e12d15fe31ccbc775d3d2cda6e1c8686e395118f808eaa118"
]
}'
curl -X POST -H "Content-type: application/json" http://localhost:9933 -d '
{
"method": "filecoindot_setRpcEndpoint",
"jsonrpc": "2.0",
"id": 0,
"params": ["http://user:[email protected]"]
}
'
If you can see the logs below in your terminal
2021-10-31 21:58:55 Running in --dev mode, RPC CORS has been disabled.
2021-10-31 21:58:55 Substrate Node
2021-10-31 21:58:55 ✌️ version 3.0.0-9e5d007-aarch64-macos
2021-10-31 21:58:55 ❤️ by Substrate DevHub <https://github.com/substrate-developer-hub>, 2017-2021
2021-10-31 21:58:55 📋 Chain specification: Development
2021-10-31 21:58:55 🏷 Node name: fuzzy-doctor-8068
2021-10-31 21:58:55 👤 Role: AUTHORITY
2021-10-31 21:58:55 💾 Database: RocksDb at /Users/clearloop/Library/Application Support/node-template/chains/dev/db
2021-10-31 21:58:55 ⛓ Native runtime: node-template-100 (node-template-1.tx1.au1)
2021-10-31 21:58:55 Using default protocol ID "sup" because none is configured in the chain specs
2021-10-31 21:58:55 🏷 Local node identity is: 12D3KooWPY6sbvMAryQkXRDKiApkd75Ak8x7cbgEqtiEzFxb5kQF
2021-10-31 21:58:55 could not parse an IP from hosts file
2021-10-31 21:58:57 📦 Highest known block at #168
2021-10-31 21:58:57 〽️ Prometheus exporter started at 127.0.0.1:9615
2021-10-31 21:58:57 Listening for new connections on 127.0.0.1:9944.
2021-10-31 21:59:00 🙌 Starting consensus session on top of parent 0x6b98f8856f41abfb45da878188aaff1419c1cb6bbb8a56a346e9f1f39613a1a4
2021-10-31 21:59:00 🎁 Prepared block for proposing at 169 [hash: 0x9f3941c44fdacc7f240b0471c97cd61e5010377619501285999ab0ff4d0edbbc; parent_hash: 0x6b98…a1a4; extrinsics (1): [0x1dd1…1b8b]]
2021-10-31 21:59:00 🔖 Pre-sealed block for proposal at 169. Hash now 0x53480ec65b6b2c13126a96c62089af0244a570ba961efdd0d377a44df12a5a5b, previously 0x9f3941c44fdacc7f240b0471c97cd61e5010377619501285999ab0ff4d0edbbc.
2021-10-31 21:59:00 ✨ Imported #169 (0x5348…5a5b)
2021-10-31 21:59:00 bootstrap filecoindot ocw with filecoin rpc endpoint http://user:[email protected]
the filecoindot offchain worker has been set up!
In the provided substrate-node-example, we configured the type ManagerOrigin of filecoindot with frame_system::EnsureRoot<AccountId>, so here we need to add_relayer with sudo access.
For setting relayer in polkadot.js.org/apps, we need to click Developer -> Sudo -> filecoindot -> add_relayer and choose an account to be the new relayer.
Or with @polkadot/api, you can use the code below:
import { ApiPromise, WsProvider } from "@polkadot/api";
import { rpc, types } from "@filecoindot/types";
import { Keyring } from "@polkadot/keyring";
(async () => {
// setup api
const provider = new WsProvider("http://0.0.0.0:9944");
const api = await ApiPromise.create({ provider, types, rpc });
// setup singer
const keyring = new Keyring({ type: "sr25519" });
const signer = keyring.addFromUri("//Alice");
// execute the `add_relayer` extrinsic
const tx_hash = await api.tx.sudo
.sudo(this._.tx.filecoindot.addRelayer(signer.address))
.signAndSend(signer);
})();See the example runtime for a full example showing how to integrate the pallet into a substrate runtime.
We take all security issues seriously, if you believe you have found a security issue within a ChainSafe project please notify us immediately. If an issue is confirmed, we will take all necessary precautions to ensure a statement and patch release is made in a timely manner.
Please email us a description of the flaw and any related information (e.g. reproduction steps, version) to security at chainsafe dot io.
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