feat: add support for a fallback Ethereum provider

build: upgrade package version

deployment.yaml

@@ -49,7 +49,7 @@ spec:
                 secretKeyRef:
                   name: hifi-liquidator-js-secret
                   key: wallet-seed
-          image: hififinance/hifi-liquidator-js:1.0.1
+          image: hififinance/hifi-liquidator-js:1.0.2
           name: hifi-liquidator-js
           resources:
             limits:

package.json

@@ -1,7 +1,7 @@
 {
   "name": "@hifi/liquidator-js",
   "description": "Utility for automatically liquidating underwater accounts in Hifi",
-  "version": "1.0.1",
+  "version": "1.0.2",
   "author": {
     "name": "Hifi",
     "email": "[email protected]",

src/helpers.ts

@@ -14,7 +14,7 @@ export async function batchQueryFilter(
   eventFilter: EventFilter,
   fromBlock: number = 0,
   toBlock: number,
-  span: number = 10000,
+  span: number = 3500,
 ) {
   let events: Event[] = [];
   for (let currBlock = fromBlock; currBlock < toBlock + 1; currBlock += span) {

src/index.ts

@@ -6,15 +6,18 @@ import { Wallet, providers, utils } from "ethers";
 
 require("dotenv").config();
 
-const { ALCHEMY_KEY, PERSISTENCE, SELECTED_ACCOUNT, WALLET_SEED } = process.env as {
+const { ALCHEMY_KEY, INFURA_KEY, PERSISTENCE, SELECTED_ACCOUNT, WALLET_SEED } = process.env as {
   [key: string]: string;
 };
 
 const { NETWORK_NAME } = process.env as { NETWORK_NAME: NetworkName };
 
 const account = utils.HDNode.fromMnemonic(WALLET_SEED as string).derivePath(`m/44'/60'/0'/0/${SELECTED_ACCOUNT}`);
 
-const provider = new providers.AlchemyProvider(NETWORK_NAME, ALCHEMY_KEY);
+const provider = new providers.FallbackProvider([
+  new providers.AlchemyProvider(NETWORK_NAME, ALCHEMY_KEY),
+  new providers.InfuraProvider(NETWORK_NAME, INFURA_KEY),
+]);
 
 const signer = new Wallet(account, provider);