71 lines
2.1 KiB
Rust
71 lines
2.1 KiB
Rust
use pallas::network::{
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facades::PeerClient,
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miniprotocols::{chainsync, Point, MAINNET_MAGIC},
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};
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use tracing::info;
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async fn do_blockfetch(peer: &mut PeerClient) {
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let range = (
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Point::Specific(
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43847831,
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hex::decode("15b9eeee849dd6386d3770b0745e0450190f7560e5159b1b3ab13b14b2684a45")
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.unwrap(),
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),
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Point::Specific(
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43847844,
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hex::decode("ff8d558a3d5a0e058beb3d94d26a567f75cd7d09ff5485aa0d0ebc38b61378d4")
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.unwrap(),
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),
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);
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let blocks = peer.blockfetch().fetch_range(range).await.unwrap();
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for block in blocks {
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info!("received block of size: {}", block.len());
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}
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}
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async fn do_chainsync(peer: &mut PeerClient) {
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let known_points = vec![Point::Specific(
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43847831u64,
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hex::decode("15b9eeee849dd6386d3770b0745e0450190f7560e5159b1b3ab13b14b2684a45").unwrap(),
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)];
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let (point, _) = peer.chainsync().find_intersect(known_points).await.unwrap();
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info!("intersected point is {:?}", point);
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for _ in 0..10 {
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let next = peer.chainsync().request_next().await.unwrap();
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match next {
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chainsync::NextResponse::RollForward(h, _) => {
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log::info!("rolling forward, header size: {}", h.cbor.len())
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}
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chainsync::NextResponse::RollBackward(x, _) => log::info!("rollback to {:?}", x),
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chainsync::NextResponse::Await => log::info!("tip of chaing reached"),
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};
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}
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}
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#[tokio::main]
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async fn main() {
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tracing::subscriber::set_global_default(
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tracing_subscriber::FmtSubscriber::builder()
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.with_max_level(tracing::Level::TRACE)
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.finish(),
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)
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.unwrap();
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// setup a TCP socket to act as data bearer between our agents and the remote
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// relay.
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let mut peer = PeerClient::connect("relays-new.cardano-mainnet.iohk.io:3001", MAINNET_MAGIC)
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.await
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.unwrap();
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// fetch an arbitrary batch of block
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do_blockfetch(&mut peer).await;
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// execute the chainsync flow from an arbitrary point in the chain
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do_chainsync(&mut peer).await;
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}
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