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index.js
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index.js
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/* eslint-disable @typescript-eslint/require-await */
/* eslint-disable @typescript-eslint/unbound-method */
/* eslint-disable @typescript-eslint/no-var-requires */
// Import the API & Provider and some utility functions
const { ApiRx, WsProvider } = require('@polkadot/api');
// Import the test keyring (already has dev keys for Alice, Bob, Charlie, Eve & Ferdie)
const testKeyring = require('@polkadot/keyring/testing');
const fs = require('fs');
async function main () {
// Initialise the provider to connect to the local node
const provider = new WsProvider('ws://127.0.0.1:9944');
// Create the API and wait until ready (optional provider passed through)
const api = await ApiRx.create({ provider }).toPromise();
// Retrieve the upgrade key from the chain state
// TODO It seems like this promise doesn't resolve
const adminId = await api.query.sudo.key().toPromise();
// Find the actual keypair in the keyring (if this is an changed value, the key
// needs to be added to the keyring before - this assumes we have defaults, i.e.
// Alice as the key - and this already exists on the test keyring)
const keyring = testKeyring.default();
const adminPair = keyring.getPair(adminId.toString());
// Retrieve the runtime to upgrade to
const code = fs.readFileSync('./test.wasm').toString('hex');
const proposal = api.tx.consensus.setCode(`0x${code}`);
console.log(`Upgrading chain runtime from ${adminId}`);
api.tx.sudo
// Perform the actual chain upgrade via the sudo module
.sudo(proposal)
// Sign and send the proposal
.signAndSend(adminPair)
// Subscribe to overall result
.subscribe(({ events = [], status }) => {
// Log transfer events
console.log('Proposal status:', status.type);
if (status.isFinalized) {
console.error('You have just upgraded your chain');
console.log('Completed at block hash', status.asFinalized.toHex());
console.log('Events:');
// Log system events once the chain update is finalised
events.forEach(({ phase, event: { data, method, section } }) => {
console.log('\t', phase.toString(), `: ${section}.${method}`, data.toString());
});
process.exit(0);
}
});
}
main().catch((error) => {
console.error(error);
process.exit(-1);
});