Relayer

This package houses both the abstract relayer interface we expose to people so that they build their own Relayer, and an actual Relayer ready to use for sending relays and dispatching new sessions.

You'll need a staked aplication in the Pocket Network blockchain to use this package.

To learn more about the relay lifecycle, reach for the docs.

Installation

Install through your package manager of choice:

pnpm install @pokt-foundation/pocketjs-relayer

Usage

import { AbstractRelayer, Relayer } from '@pokt-foundation/pocketjs-relayer'

// For the AbstractRelayer, just implement it!
class MyRelayer extends AbstractRelayer {
 // Now override the required methods...
}

// Initializing the relayer is simple:
// 1. Instanciate a provider
export const provider = new JsonRpcProvider({
  rpcUrl: MAINNET_RPC_URL,
  // For a relayer, dispatchers are needed
  dispatchers: DISPATCHERS,
})

// 2. Instanciate a signer for signing the relays
export const signer = await KeyManager.fromPrivateKey(process.env.PRIVATE_KEY)

// 3. Create a new relayer to send relays over the network!
export const relayer = new Relayer({
  keyManager: signer,
  provider,
  dispatchers: DISPATCHERS,
});

// Get a new session
const session = await relayer.getNewSession({
  chain: process.env.APP_CHAIN,
  applicationPubKey: process.env.APP_PUBLIC_KEY,
})

// Send a relay
const relay = await relayer.relay({
  data: process.env.RELAY_DATA,
  blockchain: process.env.APP_CHAIN,
  pocketAAT: POCKET_AAT,
  session: session,
})

Relayer API

Constructor

keyManager

• type: KeyManager The KeyManager instance that holds the staked app in the blockchain.

provider

• type: JsonRpcProvider | IsomorphicProvider The provider instance with available dispatchers to talk to the network.

dispatchers

• type: String[] Backup set of dispatchers.

Methods

getNewSession({ applicationPubKey, chain, sessionBlockHeight, options }): Promise

Performs a dispatch request to obtain a new session. Fails if no dispatcher is provided through the provider.

Returns Promise<Session>: The dispatch response as a session.

relay({ blockchain, data, headers, method, node, path, pocketAAT, session, options })

Sends a relay to the network.