helper for getting a gateway and locator singleton

Author: jonesmac

src/getGateway.ts

@@ -0,0 +1,43 @@
+import { assertEx } from '@xylabs/assert'
+import { isDefined } from '@xylabs/typeof'
+import type {
+  CreatableProviderContext,
+  ProviderFactoryLocator,
+  RpcSchemaMap, TransportFactory, XyoConnection,
+} from '@xyo-network/xl1-sdk'
+import {
+  ADDRESS_INDEX, buildJsonRpcProviderLocator, buildSimpleXyoSigner, generateXyoBaseWalletFromPhrase,
+  HttpRpcTransport, SimpleXyoGatewayRunner, XyoConnectionMoniker,
+} from '@xyo-network/xl1-sdk'
+
+let locator: ProviderFactoryLocator<CreatableProviderContext, string[]>
+
+export const getGateway = async (mnemonic?: string, rpcEndpoint = 'http://localhost:8080/rpc') => {
+  // Load the account to use for the transaction
+  const walletMnemonic = assertEx(process.env.XYO_WALLET_MNEMONIC ?? mnemonic, () => 'Unable to resolve mnemonic from environment variable or argument')
+  const account = await (await generateXyoBaseWalletFromPhrase(walletMnemonic)).derivePath(ADDRESS_INDEX.XYO)
+  console.log('Using account:', account.address)
+
+  // Build the signer
+  const signer = await buildSimpleXyoSigner({ account })
+
+  // Get the provider locator
+  const locator = await getLocator(rpcEndpoint)
+
+  // Get the XyoConnection instance
+  const connection = await locator.getInstance<XyoConnection>(XyoConnectionMoniker)
+
+  // Return a new SimpleXyoGatewayRunner instance
+  return new SimpleXyoGatewayRunner(connection, signer)
+}
+
+export const getLocator = async (rpcEndpoint = 'http://localhost:8080/rpc') => {
+  if (isDefined(locator)) return locator
+  // Determine the RPC endpoint to use for the chain connection
+  const endpoint = process.env.XYO_CHAIN_RPC_URL ?? rpcEndpoint
+  console.log('Using endpoint:', endpoint)
+
+  const transportFactory: TransportFactory = (schemas: RpcSchemaMap) => new HttpRpcTransport(endpoint, schemas)
+  locator = await buildJsonRpcProviderLocator({ transportFactory })
+  return locator
+}