mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-05-01 18:17:56 +00:00
ordian
02e1a7f476
Fixes #3128. This introduces a new variant for the collation response from the collator that includes the parent head data. For now, collators won't send this new variant. We'll need to change the collator side of the collator protocol to detect all the cores assigned to a para and send the parent head data in the case when it's more than 1 core. - [x] validate approach - [x] check head data hash
142 lines
4.3 KiB
Rust
142 lines
4.3 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 futures::channel::oneshot;
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use polkadot_node_network_protocol::request_response::incoming;
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use polkadot_node_primitives::UncheckedSignedFullStatement;
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use polkadot_node_subsystem::{errors::SubsystemError, RuntimeApiError};
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use polkadot_node_subsystem_util::{backing_implicit_view, runtime};
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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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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("Receiving message from overseer failed")]
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SubsystemReceive(#[from] SubsystemError),
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#[fatal(forward)]
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#[error("Retrieving next incoming request failed")]
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IncomingRequest(#[from] incoming::Error),
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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("Error while accessing Runtime API")]
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RuntimeApi(#[from] RuntimeApiError),
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#[error(transparent)]
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ImplicitViewFetchError(backing_implicit_view::FetchError),
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#[error("Response receiver for active validators request cancelled")]
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CancelledActiveValidators(oneshot::Canceled),
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#[error("Response receiver for validator groups request cancelled")]
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CancelledValidatorGroups(oneshot::Canceled),
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#[error("Response receiver for availability cores request cancelled")]
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CancelledAvailabilityCores(oneshot::Canceled),
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#[error("CollationSeconded contained statement with invalid signature")]
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InvalidStatementSignature(UncheckedSignedFullStatement),
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}
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/// An error happened on the validator side of the protocol when attempting
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/// to start seconding a candidate.
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#[derive(Debug, thiserror::Error)]
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pub enum SecondingError {
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#[error("Error while accessing Runtime API")]
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RuntimeApi(#[from] RuntimeApiError),
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#[error("Response receiver for persisted validation data request cancelled")]
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CancelledRuntimePersistedValidationData(oneshot::Canceled),
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#[error("Response receiver for prospective validation data request cancelled")]
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CancelledProspectiveValidationData(oneshot::Canceled),
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#[error("Persisted validation data is not available")]
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PersistedValidationDataNotFound,
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#[error("Persisted validation data hash doesn't match one in the candidate receipt.")]
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PersistedValidationDataMismatch,
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#[error("Candidate hash doesn't match the advertisement")]
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CandidateHashMismatch,
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#[error("Received duplicate collation from the peer")]
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Duplicate,
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#[error("The provided parent head data does not match the hash")]
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ParentHeadDataMismatch,
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}
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impl SecondingError {
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/// Returns true if an error indicates that a peer is malicious.
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pub fn is_malicious(&self) -> bool {
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use SecondingError::*;
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matches!(
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self,
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PersistedValidationDataMismatch |
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CandidateHashMismatch |
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Duplicate | ParentHeadDataMismatch
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)
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}
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}
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/// A validator failed to request a collation due to an error.
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#[derive(Debug, thiserror::Error)]
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pub enum FetchError {
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#[error("Collation was not previously advertised")]
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NotAdvertised,
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#[error("Peer is unknown")]
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UnknownPeer,
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#[error("Collation was already requested")]
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AlreadyRequested,
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#[error("Relay parent went out of view")]
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RelayParentOutOfView,
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#[error("Peer's protocol doesn't match the advertisement")]
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ProtocolMismatch,
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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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Ok(()) => Ok(()),
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Err(jfyi) => {
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gum::warn!(target: LOG_TARGET, error = ?jfyi, ctx);
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Ok(())
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},
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}
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}
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