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@polymeshassociation/approval-signing-manager

v3.3.0

Published

This signing manager was made with a specific API in which signatures for some transactions go through some kind of approval process. Some transaction may even require human approval which means the signing process may take a very long time in computer te

Downloads

27

Readme

approval-signing-manager

This signing manager was made with a specific API in which signatures for some transactions go through some kind of approval process. Some transaction may even require human approval which means the signing process may take a very long time in computer terms.

This signing manager makes a request for a signature, and continues to poll until the transaction is approved.

By default the SDK generates transactions that are valid for roughly 5 minutes. If the approval process may take longer, then "immortal" transactions should be used by passing in {immortal: true} in the transaction opts.

Substrate chains recommend the use of "mortal" transactions to mitigate the risk of replay attacks. However, the Polymesh chain will never reap accounts, and thus mitigates the risk of replay attacks.

Usage

Note: To use this as is, the remote signing service would need to be reimplemented. The types.ts and the "client" source, it should be relatively simple to reconstruct. This has been published to as an example for similar integrations

import { ApprovalSigningManager } from '@polymeshassociation/approval-signing-manager';
import { Polymesh } from '@polymeshassociation/polymesh-sdk';

// setup
const signingManager = new ApprovalSigningManager({
  // URL of the backing API
  url: 'https://example.com',
  apiClientId: 'someId',
  apiKey: 'someSecret',
  // seconds to wait between polling for each pending transaction signature
  pollingInterval: 60,
});

const polymesh = await Polymesh.connect({
  nodeUrl,
  signingManager,
});

Transaction lifetimes

By default the Polymesh SDK transaction are valid for ~5 minutes after they are created. It is recommended to set the procedure opts to use "immortal" transactions

sdk.assets.createAsset(args, { mortality: { immortal: true } });

Running unit tests

Run nx test approval-signing-manager to execute the unit tests via Jest.

Info

This library was generated with Nx.