alloy_provider/layers/
chain.rs

1use alloy_chains::NamedChain;
2use alloy_network::Network;
3use std::time::Duration;
4
5use crate::{Provider, ProviderLayer};
6
7/// A layer that wraps a [`NamedChain`]. The layer will be used to set
8/// the client's poll interval based on the average block time for this chain.
9///
10/// Does nothing to the client with a local transport.
11#[derive(Debug, Clone, Copy)]
12pub struct ChainLayer(NamedChain);
13
14impl ChainLayer {
15    /// Get the chain's average blocktime, if applicable.
16    pub const fn average_blocktime_hint(&self) -> Option<Duration> {
17        self.0.average_blocktime_hint()
18    }
19}
20
21impl From<NamedChain> for ChainLayer {
22    fn from(chain: NamedChain) -> Self {
23        Self(chain)
24    }
25}
26
27impl<P, N> ProviderLayer<P, N> for ChainLayer
28where
29    P: Provider<N>,
30    N: Network,
31{
32    type Provider = P;
33
34    fn layer(&self, inner: P) -> Self::Provider {
35        if !inner.client().is_local() {
36            if let Some(avg_block_time) = self.average_blocktime_hint() {
37                let poll_interval = avg_block_time.mul_f32(0.6);
38                inner.client().set_poll_interval(poll_interval);
39            }
40        }
41        inner
42    }
43}
alloy_provider/layers/chain.rs

alloy_provider/layers/
chain.rs
