mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-07-04 15:07:23 +00:00
Robert Klotzner
55154a8d37
* WIP: Get rid of request multiplexer. * WIP * Receiver for handling of incoming requests. * Get rid of useless `Fault` abstraction. The things the type system let us do are not worth getting abstracted in its own type. Instead error handling is going to be merely a pattern. * Make most things compile again. * Port availability distribution away from request multiplexer. * Formatting. * Port dispute distribution over. * Fixup statement distribution. * Handle request directly in collator protocol. + Only allow fatal errors at top level. * Use direct request channel for availability recovery. * Finally get rid of request multiplexer Fixes #2842 and paves the way for more back pressure possibilities. * Fix overseer and statement distribution tests. * Fix collator protocol and network bridge tests. * Fix tests in availability recovery. * Fix availability distribution tests. * Fix dispute distribution tests. * Add missing dependency * Typos. * Review remarks. * More remarks.
95 lines
2.8 KiB
Rust
95 lines
2.8 KiB
Rust
// Copyright 2021 Parity Technologies (UK) Ltd.
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// This file is part of Polkadot.
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// Polkadot 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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// Polkadot 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 Polkadot. If not, see <http://www.gnu.org/licenses/>.
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//
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//! Error handling related code and Error/Result definitions.
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use thiserror::Error;
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use polkadot_node_subsystem_util::runtime;
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use polkadot_subsystem::SubsystemError;
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use crate::{sender, LOG_TARGET};
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#[derive(Debug, Error, derive_more::From)]
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#[error(transparent)]
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pub enum Error {
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/// Fatal errors of dispute distribution.
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Fatal(Fatal),
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/// Non fatal errors of dispute distribution.
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NonFatal(NonFatal),
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}
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impl From<sender::Error> for Error {
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fn from(o: sender::Error) -> Self {
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match o {
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sender::Error::Fatal(f) => Self::Fatal(Fatal::Sender(f)),
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sender::Error::NonFatal(f) => Self::NonFatal(NonFatal::Sender(f)),
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}
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}
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}
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/// Fatal errors of this subsystem.
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#[derive(Debug, Error)]
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pub enum Fatal {
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/// Receiving subsystem message from overseer failed.
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#[error("Receiving message from overseer failed")]
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SubsystemReceive(#[source] SubsystemError),
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/// Spawning a running task failed.
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#[error("Spawning subsystem task failed")]
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SpawnTask(#[source] SubsystemError),
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/// `DisputeSender` mpsc receiver exhausted.
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#[error("Erasure chunk requester stream exhausted")]
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SenderExhausted,
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/// Errors coming from `runtime::Runtime`.
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#[error("Error while accessing runtime information")]
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Runtime(#[from] runtime::Fatal),
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/// Errors coming from `DisputeSender`
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#[error("Error while accessing runtime information")]
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Sender(#[from] sender::Fatal),
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}
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/// Non-fatal errors of this subsystem.
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#[derive(Debug, Error)]
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pub enum NonFatal {
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/// Errors coming from `DisputeSender`
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#[error("Error while accessing runtime information")]
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Sender(#[from] sender::NonFatal),
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}
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pub type Result<T> = std::result::Result<T, Error>;
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pub type FatalResult<T> = std::result::Result<T, Fatal>;
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/// Utility for eating top level errors and log them.
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///
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/// We basically always want to try and continue on error. This utility function is meant to
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/// consume top-level errors by simply logging them
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pub fn log_error(result: Result<()>, ctx: &'static str) -> std::result::Result<(), Fatal> {
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match result {
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Err(Error::Fatal(f)) => Err(f),
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Err(Error::NonFatal(error)) => {
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tracing::warn!(target: LOG_TARGET, error = ?error, ctx);
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Ok(())
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},
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Ok(()) => Ok(()),
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}
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}
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