[Eng-1179] RPC endpoint to use Alchemy. (#3240)

Author: Kefancao

indexer/services/comlink/src/controllers/api/v4/skip-bridge-controller.ts

@@ -42,7 +42,7 @@ import {
   chains,
   getEOAAddressFromSmartAccountAddress,
   isSupportedEVMChainId,
-  getRPCEndpoint,
+  getZeroDevRPCEndpoint,
   publicClients,
   alchemyNetworkToChainIdMap,
 } from '../../../helpers/alchemy-helpers';
@@ -502,14 +502,14 @@ class BridgeController extends Controller {
 
     const zerodevPaymaster = createZeroDevPaymasterClient({
       chain: chains[chainId],
-      transport: http(getRPCEndpoint(chainId)),
+      transport: http(getZeroDevRPCEndpoint(chainId)),
     });
 
     const kernelClient = createKernelAccountClient({
       account,
       chain: chains[chainId],
       client: publicClients[chainId],
-      bundlerTransport: http(getRPCEndpoint(chainId)),
+      bundlerTransport: http(getZeroDevRPCEndpoint(chainId)),
       paymaster: zerodevPaymaster,
       userOperation: {
         estimateFeesPerGas: async ({ bundlerClient }) => {

indexer/services/comlink/src/helpers/alchemy-helpers.ts

@@ -47,9 +47,17 @@ export const chains: Record<string, Chain> = {
   [optimism.id.toString()]: optimism,
 };
 
+export const chainInAlchemy: Record<string, string> = {
+  [mainnet.id.toString()]: 'eth-mainnet',
+  [arbitrum.id.toString()]: 'arb-mainnet',
+  [avalanche.id.toString()]: 'avax-mainnet',
+  [base.id.toString()]: 'base-mainnet',
+  [optimism.id.toString()]: 'opt-mainnet',
+};
+
 export const publicClients = Object.keys(chains).reduce((acc, chainId) => {
   acc[chainId] = createPublicClient({
-    transport: http(getRPCEndpoint(chainId)),
+    transport: http(getAlchemyRPCEndpoint(chainId)),
     chain: chains[chainId],
   });
   return acc;
@@ -216,7 +224,7 @@ async function registerAddressWithAlchemyWebhookWithRetry(
  */
 export async function getSmartAccountAddress(address: string): Promise<string> {
   const publicAvalancheClient = createPublicClient({
-    transport: http(getRPCEndpoint(avalanche.id.toString())),
+    transport: http(getAlchemyRPCEndpoint(avalanche.id.toString())),
     chain: avalanche,
   });
 
@@ -265,13 +273,20 @@ export function isSupportedEVMChainId(chainId: string): boolean {
   return Object.keys(chains).includes(chainId);
 }
 
-export function getRPCEndpoint(chainId: string): string {
+export function getZeroDevRPCEndpoint(chainId: string): string {
   if (!isSupportedEVMChainId(chainId)) {
     throw new Error(`Unsupported chainId: ${chainId}`);
   }
   return `${config.ZERODEV_API_BASE_URL}/${config.ZERODEV_API_KEY}/chain/${chainId}`;
 }
 
+export function getAlchemyRPCEndpoint(chainId: string): string {
+  if (!isSupportedEVMChainId(chainId)) {
+    throw new Error(`Unsupported chainId: ${chainId}`);
+  }
+  return `https://${chainInAlchemy[chainId]}.g.alchemy.com/v2/${config.ALCHEMY_API_KEY}`;
+}
+
 // TODO: Verify that this function is 1000% correct. @RUI and @TYLER and @JARED
 export function getAddress(
   chainId: string,