Files
api/docs/examples/promise/10_upgrade_chain/index.js
T
Jaco Greeff 47fc4a2b3c Bump deps w/ eslint (#2302)
* Bump deps w/ eslint

* Additional cleanups

* Additional

* @polkadot/types done

* Additional

* @polkadot/typegen done

* Additional

* @polkadot/rpc-core done

* Additional

* Additional

* Additional

* docs

* @polkadot/api-derive done

* @polkadot/api done

* @polkadot/api-contracts done

* Update tests
2020-05-24 09:24:45 +02:00

63 lines
2.2 KiB
JavaScript
Executable File

/* eslint-disable header/header */
/* eslint-disable @typescript-eslint/require-await */
/* eslint-disable @typescript-eslint/unbound-method */
/* eslint-disable @typescript-eslint/no-floating-promises */
// Import the API & Provider and some utility functions
const { ApiPromise, 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 ApiPromise.create({ provider });
// Retrieve the upgrade key from the chain state
const adminId = await api.query.sudo.key();
// Find the actual keypair in the keyring (if this is a 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
const code = fs.readFileSync('./test.wasm').toString('hex');
const proposal = api.tx.system && api.tx.system.setCode
? api.tx.system.setCode(`0x${code}`) // For newer versions of Substrate
: api.tx.consensus.setCode(`0x${code}`); // For previous versions
console.log(`Upgrading from ${adminId}, ${code.length / 2} bytes`);
// Perform the actual chain upgrade via the sudo module
api.tx.sudo
.sudo(proposal)
.signAndSend(adminPair, ({ events = [], status }) => {
console.log('Proposal status:', status.type);
if (status.isInBlock) {
console.error('You have just upgraded your chain');
console.log('Included at block hash', status.asInBlock.toHex());
console.log('Events:');
console.log(JSON.stringify(events.toHuman(), null, 2));
} else if (status.isFinalized) {
console.log('Finalized block hash', status.asFinalized.toHex());
process.exit(0);
}
});
}
main().catch((error) => {
console.error(error);
process.exit(-1);
});