@switchboard-xyz/near.js v2.2.5

@switchboard-xyz/near.js

A Typescript client to interact with Switchboard on NEAR.

Install

npm i --save @switchboard-xyz/near.js

Usage

Directory

• Load Switchboard Program
• Create a Queue
• Create a Data Feed
• Create a Job
• Add Job to Data Feed
• Create Feed Permissions
• Set Feed Permissions
• Add Feed to Crank
• Request a Feed Update

Load Switchboard Program

import { SwitchboardProgram } from "@switchboard-xyz/near.js";

// from filesystem keypair
const program = await SwitchboardProgram.loadFromFs(
  "testnet", // Network ID
  "https://rpc.testnet.near.org", // RPC URL
  accountId // Near Account name
);
// from browser
const program = await SwitchboardProgram.loadFromBrowser(
  "testnet", // Network ID
  "https://rpc.testnet.near.org", // RPC URL
  accountId // Near Account name
);

Create a Queue

import { QueueAccount } from "@switchboard-xyz/near.js";

const queue = await QueueAccount.create(program, {
  authority: program.account.accountId,
  mint: "wrap.test",
  reward: 0,
  minStake: 100,
  queueSize: 100,
  oracleTimeout: 180,
  unpermissionedFeeds: true,
});
console.log(await queue.loadData());

Create a Data Feed

import { AggregatorAccount } from "@switchboard-xyz/near.js";

const aggregator = await AggregatorAccount.create(program, {
  authority: program.account.accountId,
  queue: queue.address,
  name: Buffer.from(""),
  metadata: Buffer.from(""),
  batchSize: 1,
  minOracleResults: 1,
  minJobResults: 1,
  minUpdateDelaySeconds: 5,
  startAfter: 0,
  varianceThreshold: sbv2.SwitchboardDecimal.fromBig(new Big(0)),
  forceReportPeriod: 0,
  crank: crank.address,
  rewardEscrow: escrow.address,
  historyLimit: 1000,
});
console.log(await aggregator.loadData());

Create a Job

import { JobAccount } from "@switchboard-xyz/near.js";

const job = await JobAccount.create(program, {
  data: Buffer.from(OracleJob.encodeDelimited(oracleJob).finish()),
  name: Buffer.from("Job1"),
  metadata: Buffer.from("Job1 - FtxUS BTC/USD"),
});
console.log(await job.loadData());

Add Job to Data Feed

await aggregator.addJob({
  job: job.address,
  weight: 1,
});

Create Feed Permissions

import { PermissionAccount } from "@switchboard-xyz/near.js";

const permission = await PermissionAccount.create(program, {
  authority: program.account.accountId,
  granter: queue.address,
  grantee: aggregator.address,
});

Set Feed Permissions

await permission.set({
  permission: SwitchboardPermission.PERMIT_ORACLE_QUEUE_USAGE,
  enable: true,
});

Add Feed to Crank

import { CrankAccount } from "@switchboard-xyz/near.js";

const crank = new CrankAccount({ program, address: crankAddress });
await crank.push({
  aggregator: aggregatorAccount.address,
});

Request a Feed Update

import { EscrowAccount } from "@switchboard-xyz/near.js";

const escrowAccount = await EscrowAccount.getOrCreateStaticAccount(program);
await aggregatorAccount.openRound({
  rewardRecipient: escrowAccount.address,
});