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