54 lines
1.6 KiB
Rust
54 lines
1.6 KiB
Rust
|
use ethers::prelude::*;
|
||
|
|
use eyre::Result;
|
||
|
|
use std::sync::Arc;
|
||
|
|
|
||
|
|
// Generate the type-safe contract bindings by providing the ABI
|
||
|
|
// definition in human readable format
|
||
|
|
abigen!(
|
||
|
|
ERC20,
|
||
|
|
r#"[
|
||
|
|
event Transfer(address indexed src, address indexed dst, uint wad)
|
||
|
|
]"#,
|
||
|
|
);
|
||
|
|
|
||
|
|
// In order to run this example you need to include Ws and TLS features
|
||
|
|
// Run this example with
|
||
|
|
// `cargo run -p ethers --example subscribe_contract_events_with_meta --features="ws","rustls"`
|
||
|
|
#[tokio::main]
|
||
|
|
async fn main() -> Result<()> {
|
||
|
|
let client =
|
||
|
|
Provider::<Ws>::connect("wss://mainnet.infura.io/ws/v3/c60b0bb42f8a4c6481ecd229eddaca27")
|
||
|
|
.await?;
|
||
|
|
|
||
|
|
let client = Arc::new(client);
|
||
|
|
|
||
|
|
// WETH Token
|
||
|
|
let address = "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2".parse::<Address>()?;
|
||
|
|
let weth = ERC20::new(address, Arc::clone(&client));
|
||
|
|
|
||
|
|
// Subscribe Transfer events
|
||
|
|
let events = weth.events();
|
||
|
|
let mut stream = events.stream().await?.with_meta();
|
||
|
|
while let Some(Ok((event, meta))) = stream.next().await {
|
||
|
|
println!("src: {:?}, dst: {:?}, wad: {:?}", event.src, event.dst, event.wad);
|
||
|
|
|
||
|
|
println!(
|
||
|
|
r#"address: {:?},
|
||
|
|
block_number: {:?},
|
||
|
|
block_hash: {:?},
|
||
|
|
transaction_hash: {:?},
|
||
|
|
transaction_index: {:?},
|
||
|
|
log_index: {:?}
|
||
|
|
"#,
|
||
|
|
meta.address,
|
||
|
|
meta.block_number,
|
||
|
|
meta.block_hash,
|
||
|
|
meta.transaction_hash,
|
||
|
|
meta.transaction_index,
|
||
|
|
meta.log_index
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
Ok(())
|
||
|
|
}
|