web3-proxy/web3_proxy/examples/watch_blocks.rs
2022-08-05 19:22:23 +00:00

39 lines
1.0 KiB
Rust

/// poll an http rpc
use ethers::prelude::*;
use std::{str::FromStr, time::Duration};
#[tokio::main]
async fn main() -> anyhow::Result<()> {
// install global collector configured based on RUST_LOG env var.
tracing_subscriber::fmt()
.with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
.compact()
.init();
fdlimit::raise_fd_limit();
// erigon does not support most filters
// let url = "http://10.11.12.16:8545";
// geth
let url = "http://10.11.12.16:8545";
println!("Watching blocks from {:?}", url);
let provider = Http::from_str(url)?;
let provider = Provider::new(provider).interval(Duration::from_secs(1));
let mut stream = provider.watch_blocks().await?;
while let Some(block_number) = stream.next().await {
let block = provider.get_block(block_number).await?.unwrap();
println!(
"{:?} = Ts: {:?}, block number: {}",
block.hash.unwrap(),
block.timestamp,
block.number.unwrap(),
);
}
Ok(())
}