SDK integration
Installation
npm i aa-conla-sdk
NPM package link:
This package provides 2 APIs for using UserOperations:
Low-level "walletAPI"
High-level Provider
LowLevel API
BaseWalletAPI
An abstract base-class to create UserOperation for a contract wallet.
SimpleAccountAPI
An implementation of the BaseWalletAPI, for the SimpleWallet sample of account-abstraction.
owner = provider.getSigner()
const dest = ethers.Wallet.createRandom()
const paymasterAPI = new PaymasterAPI(entryPointAddress, bundlerUrl)
const accountAPI = new SimpleAccountAPI({
provider: provider,
entryPointAddress: entryPointAddress,
owner: owner,
factoryAddress: factoryAddress,
paymasterAPI: paymasterAPI,
})
const gasPrice = await provider.getGasPrice()
const value = parseEther('0.1')
const op = await accountAPI.createSignedUserOp({
target: dest.address,
data: "0x",
value: value,
maxFeePerGas: gasPrice,
maxPriorityFeePerGas: gasPrice,
})
const packeUserOp = await packUserOp(op)
const tx = await accountAPI.sendHandlerOps([packeUserOp])
console.log("tx hash: ", tx.hash)
High-Level Provider API
A simplified mode that doesn't require a different wallet extension. Instead, the current provider's account is used as wallet owner by calling its "Sign Message" operation.
This can only work for wallets that use an EIP-191 ("Ethereum Signed Message") signature (like our sample SimpleWallet) Also, the UX is not great (the user is asked to sign a hash, and even the wallet address is not mentioned, only the signer)
import { wrapProvider } from 'aa-conla-sdk'
//use this account as wallet-owner (which will be used to sign the requests)
const aaSigner = provider.getSigner()
const paymasterAPI = new PaymasterAPI(entryPointAddress, bundlerUrl)
const config = {
chainId: await provider.getNetwork().then(net => net.chainId),
entryPointAddress,
bundlerUrl: 'bundlerUrl',
paymasterAPI
}
const aaProvider = await wrapProvider(provider, config, aaSigner)
const walletAddress = await aaProvider.getSigner().getAddress()
// send some eth to the wallet Address: wallet should have some balance to pay for its own creation, and for calling methods.
const myContract = new Contract(abi, aaProvider)
// this method will get called from the wallet address, through account-abstraction EntryPoint
await myContract.someMethod()
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