ethers-rs/examples/middleware/examples/signer.rs

41 lines
1.4 KiB
Rust

use ethers::{
core::{types::TransactionRequest, utils::Anvil},
middleware::SignerMiddleware,
providers::{Http, Middleware, Provider},
signers::{LocalWallet, Signer},
};
use eyre::Result;
use std::convert::TryFrom;
/// In Ethereum, transactions must be signed with a private key before they can be broadcast to the
/// network. Ethers-rs provides a way to customize this process by allowing
/// you to define a signer, called to sign transactions before they are sent.
#[tokio::main]
async fn main() -> Result<()> {
let anvil = Anvil::new().spawn();
let wallet: LocalWallet = anvil.keys()[0].clone().into();
let wallet2: LocalWallet = anvil.keys()[1].clone().into();
// connect to the network
let provider = Provider::<Http>::try_from(anvil.endpoint())?;
// connect the wallet to the provider
let client = SignerMiddleware::new(provider, wallet.with_chain_id(anvil.chain_id()));
// craft the transaction
let tx = TransactionRequest::new().to(wallet2.address()).value(10000);
// send it!
let pending_tx = client.send_transaction(tx, None).await?;
// get the mined tx
let receipt = pending_tx.await?.ok_or_else(|| eyre::format_err!("tx dropped from mempool"))?;
let tx = client.get_transaction(receipt.transaction_hash).await?;
println!("Sent tx: {}\n", serde_json::to_string(&tx)?);
println!("Tx receipt: {}", serde_json::to_string(&receipt)?);
Ok(())
}