mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-07-14 14:25:45 +00:00
Bernhard Schuster
d946582707
* seed commit for fatality based errors * fatality * first draft of fatality * cleanup * differnt approach * simplify * first working version for enums, with documentation * add split * fix simple split test case * extend README.md * update fatality impl * make tests passed * apply fatality to first subsystem * fatality fixes * use fatality in a subsystem * fix subsystemg * fixup proc macro * fix/test: log::*! do not execute when log handler is missing * fix spelling * rename Runtime2 to something sane * allow nested split with `forward` annotations * add free license * enable and fixup all tests * use external fatality Makes this more reviewable. * bump fatality dep Avoid duplicate expander compilations. * migrate availability distribution * more fatality usage * chore: bump fatality to 0.0.6 * fixup remaining subsystems * chore: fmt * make cargo spellcheck happy * remove single instance of `#[fatal(false)]` * last quality sweep * fixup
98 lines
3.1 KiB
Rust
98 lines
3.1 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 polkadot_node_network_protocol::PeerId;
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use polkadot_node_subsystem_util::runtime;
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use polkadot_primitives::v1::{CandidateHash, Hash};
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use polkadot_subsystem::SubsystemError;
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use crate::LOG_TARGET;
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/// General result.
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pub type Result<T> = std::result::Result<T, Error>;
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/// Result for non-fatal only failures.
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pub type JfyiErrorResult<T> = std::result::Result<T, JfyiError>;
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/// Result for fatal only failures.
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pub type FatalResult<T> = std::result::Result<T, FatalError>;
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use fatality::Nested;
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#[allow(missing_docs)]
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#[fatality::fatality(splitable)]
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pub enum Error {
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#[fatal]
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#[error("Requester receiver stream finished")]
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RequesterReceiverFinished,
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#[fatal]
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#[error("Responder receiver stream finished")]
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ResponderReceiverFinished,
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#[fatal]
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#[error("Spawning subsystem task failed")]
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SpawnTask(#[source] SubsystemError),
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#[fatal]
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#[error("Receiving message from overseer failed")]
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SubsystemReceive(#[source] SubsystemError),
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#[fatal(forward)]
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#[error("Error while accessing runtime information")]
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Runtime(#[from] runtime::Error),
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#[error("Relay parent could not be found in active heads")]
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NoSuchHead(Hash),
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#[error("Message from not connected peer")]
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NoSuchPeer(PeerId),
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#[error("Peer requested data for candidate it never received a notification for (malicious?)")]
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RequestedUnannouncedCandidate(PeerId, CandidateHash),
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// A large statement status was requested, which could not be found.
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#[error("Statement status does not exist")]
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NoSuchLargeStatementStatus(Hash, CandidateHash),
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// A fetched large statement was requested, but could not be found.
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#[error("Fetched large statement does not exist")]
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NoSuchFetchedLargeStatement(Hash, CandidateHash),
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// Responder no longer waits for our data. (Should not happen right now.)
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#[error("Oneshot `GetData` channel closed")]
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ResponderGetDataCanceled,
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}
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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<(), FatalError> {
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match result.into_nested()? {
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Err(jfyi) => {
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match jfyi {
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JfyiError::RequestedUnannouncedCandidate(_, _) =>
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tracing::warn!(target: LOG_TARGET, error = %jfyi, ctx),
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_ => tracing::debug!(target: LOG_TARGET, error = %jfyi, ctx),
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}
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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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