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* Happy New Year! * Remove year entierly Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io> * Remove years from copyright notice in the entire repo --------- Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
113 lines
3.7 KiB
Rust
113 lines
3.7 KiB
Rust
// Copyright (C) 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 fatality::Nested;
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use polkadot_node_network_protocol::request_response::outgoing::RequestError;
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use polkadot_primitives::SessionIndex;
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use futures::channel::oneshot;
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use polkadot_node_subsystem::{ChainApiError, SubsystemError};
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use polkadot_node_subsystem_util::runtime;
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use crate::LOG_TARGET;
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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("Spawning subsystem task failed: {0}")]
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SpawnTask(#[source] SubsystemError),
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#[fatal]
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#[error("Erasure chunk requester stream exhausted")]
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RequesterExhausted,
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#[fatal]
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#[error("Receive channel closed: {0}")]
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IncomingMessageChannel(#[source] SubsystemError),
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#[fatal(forward)]
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#[error("Error while accessing runtime information: {0}")]
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Runtime(#[from] runtime::Error),
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#[fatal]
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#[error("Oneshot for receiving response from Chain API got cancelled")]
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ChainApiSenderDropped(#[source] oneshot::Canceled),
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#[fatal]
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#[error("Retrieving response from Chain API unexpectedly failed with error: {0}")]
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ChainApi(#[from] ChainApiError),
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// av-store will drop the sender on any error that happens.
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#[error("Response channel to obtain chunk failed")]
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QueryChunkResponseChannel(#[source] oneshot::Canceled),
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// av-store will drop the sender on any error that happens.
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#[error("Response channel to obtain available data failed")]
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QueryAvailableDataResponseChannel(#[source] oneshot::Canceled),
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// We tried accessing a session that was not cached.
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#[error("Session {missing_session} is not cached, cached sessions: {available_sessions:?}.")]
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NoSuchCachedSession { available_sessions: Vec<SessionIndex>, missing_session: SessionIndex },
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// Sending request response failed (Can happen on timeouts for example).
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#[error("Sending a request's response failed.")]
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SendResponse,
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#[error("FetchPoV request error: {0}")]
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FetchPoV(#[source] RequestError),
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#[error("Fetched PoV does not match expected hash")]
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UnexpectedPoV,
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#[error("Remote responded with `NoSuchPoV`")]
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NoSuchPoV,
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#[error("Given validator index could not be found in current session")]
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InvalidValidatorIndex,
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}
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/// General result abbreviation type alias.
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pub type Result<T> = std::result::Result<T, Error>;
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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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Ok(()) => Ok(()),
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Err(jfyi) => {
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match jfyi {
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JfyiError::UnexpectedPoV |
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JfyiError::InvalidValidatorIndex |
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JfyiError::NoSuchCachedSession { .. } |
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JfyiError::QueryAvailableDataResponseChannel(_) |
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JfyiError::QueryChunkResponseChannel(_) => gum::warn!(target: LOG_TARGET, error = %jfyi, ctx),
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JfyiError::FetchPoV(_) |
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JfyiError::SendResponse |
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JfyiError::NoSuchPoV |
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JfyiError::Runtime(_) => gum::debug!(target: LOG_TARGET, error = ?jfyi, ctx),
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}
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Ok(())
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},
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}
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}
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