ethers-rs/examples/ethers-wasm/src/lib.rs

73 lines
2.2 KiB
Rust

use crate::utils::SIMPLECONTRACT_BIN;
use ethers::{
contract::abigen,
prelude::{ContractFactory, Provider, SignerMiddleware},
providers::Ws,
};
use std::sync::Arc;
use wasm_bindgen::prelude::*;
use web_sys::console;
pub mod utils;
// When the `wee_alloc` feature is enabled, use `wee_alloc` as the global
// allocator.
#[cfg(feature = "wee_alloc")]
#[global_allocator]
static ALLOC: wee_alloc::WeeAlloc = wee_alloc::WeeAlloc::INIT;
macro_rules! log {
( $( $t:tt )* ) => {
web_sys::console::log_1(&format!( $( $t )* ).into());
}
}
abigen!(
SimpleContract,
"./abi/contract_abi.json",
event_derives(serde::Deserialize, serde::Serialize)
);
#[wasm_bindgen]
pub async fn deploy() {
utils::set_panic_hook();
console::log_2(
&"SimpleContract ABI: ".into(),
&serde_wasm_bindgen::to_value(&*SIMPLECONTRACT_ABI).unwrap(),
);
let wallet = utils::key(0);
log!("Wallet: {:?}", wallet);
let endpoint = "ws://127.0.0.1:8545";
let provider = Provider::<Ws>::connect(endpoint).await.unwrap();
let client = Arc::new(SignerMiddleware::new(provider, wallet));
log!("Connected to: `{}`", endpoint);
let bytecode = hex::decode(SIMPLECONTRACT_BIN).unwrap();
let factory = ContractFactory::new(SIMPLECONTRACT_ABI.clone(), bytecode.into(), client.clone());
log!("Deploying contract...");
let contract = factory.deploy("hello WASM!".to_string()).unwrap().send().await.unwrap();
let addr = contract.address();
log!("Deployed contract with address: {:?}", addr);
let contract = SimpleContract::new(addr, client.clone());
let value = "bye from WASM!";
log!("Setting value... `{}`", value);
let receipt = contract.set_value(value.to_owned()).send().await.unwrap().await.unwrap();
console::log_2(&"Set value receipt: ".into(), &serde_wasm_bindgen::to_value(&receipt).unwrap());
log!("Fetching logs...");
let logs = contract.value_changed_filter().from_block(0u64).query().await.unwrap();
let value = contract.get_value().call().await.unwrap();
console::log_2(
&format!("Value: `{value}`. Logs: ").into(),
&serde_wasm_bindgen::to_value(&logs).unwrap(),
);
}