mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-05-31 08:41:02 +00:00
Tomasz Drwięga
d9bec5f387
* Nest some crates. * Alter command execution to make it easier to add new bridges. * Rename sub-dirs. * cargo fmt --all * Address clippy. * Update relays/substrate/src/rialto_millau/cli.rs Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com> Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>
96 lines
2.9 KiB
Rust
96 lines
2.9 KiB
Rust
// Copyright 2019-2020 Parity Technologies (UK) Ltd.
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// This file is part of Parity Bridges Common.
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// Parity Bridges Common is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity Bridges Common is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity Bridges Common. If not, see <http://www.gnu.org/licenses/>.
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use crate::{FailedClient, MaybeConnectionError};
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use async_trait::async_trait;
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use std::{fmt::Debug, future::Future, time::Duration};
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/// Default pause between reconnect attempts.
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pub const RECONNECT_DELAY: Duration = Duration::from_secs(10);
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/// Basic blockchain client from relay perspective.
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#[async_trait]
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pub trait Client: Clone + Send + Sync {
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/// Type of error this clients returns.
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type Error: Debug + MaybeConnectionError;
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/// Try to reconnect to source node.
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async fn reconnect(&mut self) -> Result<(), Self::Error>;
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}
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/// Run relay loop.
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///
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/// This function represents an outer loop, which in turn calls provided `loop_run` function to do
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/// actual job. When `loop_run` returns, this outer loop reconnects to failed client (source,
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/// target or both) and calls `loop_run` again.
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pub fn run<SC: Client, TC: Client, R, F>(
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reconnect_delay: Duration,
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mut source_client: SC,
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mut target_client: TC,
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loop_run: R,
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) where
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R: Fn(SC, TC) -> F,
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F: Future<Output = Result<(), FailedClient>>,
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{
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let mut local_pool = futures::executor::LocalPool::new();
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local_pool.run_until(async move {
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loop {
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let result = loop_run(source_client.clone(), target_client.clone()).await;
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match result {
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Ok(()) => break,
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Err(failed_client) => loop {
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async_std::task::sleep(reconnect_delay).await;
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if failed_client == FailedClient::Both || failed_client == FailedClient::Source {
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match source_client.reconnect().await {
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Ok(()) => (),
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Err(error) => {
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log::warn!(
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target: "bridge",
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"Failed to reconnect to source client. Going to retry in {}s: {:?}",
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reconnect_delay.as_secs(),
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error,
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);
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continue;
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}
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}
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}
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if failed_client == FailedClient::Both || failed_client == FailedClient::Target {
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match target_client.reconnect().await {
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Ok(()) => (),
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Err(error) => {
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log::warn!(
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target: "bridge",
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"Failed to reconnect to target client. Going to retry in {}s: {:?}",
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reconnect_delay.as_secs(),
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error,
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);
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continue;
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}
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}
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}
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break;
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},
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}
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log::debug!(target: "bridge", "Restarting relay loop");
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}
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});
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}
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