mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
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Robert Habermeier
9a1b614c47
* demote warnings due to disconnected dispute coordinator * cargo fmt Co-authored-by: Robert Klotzner <robert.klotzner@gmx.at>
120 lines
3.6 KiB
Rust
120 lines
3.6 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_network_protocol::{request_response::incoming, PeerId};
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use polkadot_node_subsystem_util::runtime;
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use crate::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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/// All fatal errors.
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Fatal(Fatal),
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/// All nonfatal/potentially recoverable errors.
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NonFatal(NonFatal),
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}
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impl From<runtime::Error> for Error {
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fn from(o: runtime::Error) -> Self {
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match o {
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runtime::Error::Fatal(f) => Self::Fatal(Fatal::Runtime(f)),
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runtime::Error::NonFatal(f) => Self::NonFatal(NonFatal::Runtime(f)),
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}
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}
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}
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impl From<incoming::Error> for Error {
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fn from(o: incoming::Error) -> Self {
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match o {
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incoming::Error::Fatal(f) => Self::Fatal(Fatal::IncomingRequest(f)),
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incoming::Error::NonFatal(f) => Self::NonFatal(NonFatal::IncomingRequest(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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/// 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 receiving incoming requests.
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#[error("Retrieving next incoming request failed.")]
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IncomingRequest(#[from] incoming::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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/// Answering request failed.
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#[error("Sending back response to peer {0} failed.")]
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SendResponse(PeerId),
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/// Setting reputation for peer failed.
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#[error("Changing peer's ({0}) reputation failed.")]
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SetPeerReputation(PeerId),
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/// Peer sent us request with invalid signature.
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#[error("Dispute request with invalid signatures, from peer {0}.")]
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InvalidSignature(PeerId),
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/// Import oneshot got canceled.
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#[error("Import of dispute got canceled for peer {0} - import failed for some reason.")]
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ImportCanceled(PeerId),
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/// Non validator tried to participate in dispute.
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#[error("Peer {0} is not a validator.")]
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NotAValidator(PeerId),
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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::NonFatal),
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/// Errors coming from receiving incoming requests.
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#[error("Retrieving next incoming request failed.")]
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IncomingRequest(#[from] incoming::NonFatal),
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}
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pub type Result<T> = std::result::Result<T, Error>;
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pub type NonFatalResult<T> = std::result::Result<T, NonFatal>;
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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<()>) -> 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 @ NonFatal::ImportCanceled(_))) => {
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tracing::debug!(target: LOG_TARGET, error = ?error);
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Ok(())
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},
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Err(Error::NonFatal(error)) => {
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tracing::warn!(target: LOG_TARGET, error = ?error);
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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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