ethers-rs/examples/moonbeam_with_abi.rs

76 lines
2.8 KiB
Rust

use ethers::prelude::*;
use eyre::Result;
use std::{convert::TryFrom, path::Path, sync::Arc, time::Duration};
abigen!(
SimpleContract,
"./examples/contract_abi.json",
event_derives(serde::Deserialize, serde::Serialize)
);
const MOONBEAM_DEV_ENDPOINT: &str = "http://localhost:9933";
/// This requires a running moonbeam dev instance on `localhost:9933`
/// See `https://docs.moonbeam.network/builders/get-started/moonbeam-dev/` for reference
///
/// This has been tested against:
///
/// ```bash
/// docker run --rm --name moonbeam_development -p 9944:9944 -p 9933:9933 purestake/moonbeam:v0.14.2 --dev --ws-external --rpc-external
/// ```
///
/// Also requires the `legacy` feature to send Legacy transaction instead of an EIP-1559
#[tokio::main]
#[cfg(feature = "legacy")]
async fn main() -> Result<()> {
// set the path to the contract, `CARGO_MANIFEST_DIR` points to the directory containing the
// manifest of `ethers`. which will be `../` relative to this file
let source = Path::new(&env!("CARGO_MANIFEST_DIR")).join("examples/contract.sol");
let compiled = Solc::default().compile_source(source).expect("Could not compile contracts");
let (abi, bytecode, _runtime_bytecode) =
compiled.find("SimpleStorage").expect("could not find contract").into_parts_or_default();
// 1. get a moonbeam dev key
let key = ethers::core::utils::moonbeam::dev_keys()[0].clone();
// 2. instantiate our wallet with chain id
let wallet: LocalWallet = LocalWallet::from(key).with_chain_id(Chain::MoonbeamDev);
// 3. connect to the network
let provider =
Provider::<Http>::try_from(MOONBEAM_DEV_ENDPOINT)?.interval(Duration::from_millis(10u64));
// 4. instantiate the client with the wallet
let client = SignerMiddleware::new(provider, wallet);
let client = Arc::new(client);
// 5. create a factory which will be used to deploy instances of the contract
let factory = ContractFactory::new(abi, bytecode, client.clone());
// 6. deploy it with the constructor arguments, note the `legacy` call
let contract = factory.deploy("initial value".to_string())?.legacy().send().await?;
// 7. get the contract's address
let addr = contract.address();
// 8. instantiate the contract
let contract = SimpleContract::new(addr, client.clone());
// 9. call the `setValue` method
// (first `await` returns a PendingTransaction, second one waits for it to be mined)
let _receipt = contract.set_value("hi".to_owned()).legacy().send().await?.await?;
// 10. get all events
let logs = contract.value_changed_filter().from_block(0u64).query().await?;
// 11. get the new value
let value = contract.get_value().call().await?;
println!("Value: {}. Logs: {}", value, serde_json::to_string(&logs)?);
Ok(())
}
#[cfg(not(feature = "legacy"))]
fn main() {}