mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-07-14 08:35:43 +00:00
Bernhard Schuster
108 lines
3.4 KiB
Rust
108 lines
3.4 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::{Fault, runtime};
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use polkadot_subsystem::SubsystemError;
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use polkadot_node_primitives::disputes::DisputeMessageCheckError;
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#[derive(Debug, Error)]
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#[error(transparent)]
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pub struct Error(pub Fault<NonFatal, Fatal>);
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impl From<NonFatal> for Error {
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fn from(e: NonFatal) -> Self {
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Self(Fault::from_non_fatal(e))
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}
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}
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impl From<Fatal> for Error {
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fn from(f: Fatal) -> Self {
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Self(Fault::from_fatal(f))
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}
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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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Self(Fault::from_other(o))
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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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/// 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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/// 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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}
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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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/// We need available active heads for finding relevant authorities.
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#[error("No active heads available - needed for finding relevant authorities.")]
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NoActiveHeads,
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/// This error likely indicates a bug in the coordinator.
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#[error("Oneshot for asking dispute coordinator for active disputes got canceled.")]
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AskActiveDisputesCanceled,
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/// This error likely indicates a bug in the coordinator.
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#[error("Oneshot for asking dispute coordinator for candidate votes got canceled.")]
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AskCandidateVotesCanceled,
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/// This error does indicate a bug in the coordinator.
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///
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/// We were not able to successfully construct a `DisputeMessage` from disputes votes.
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#[error("Invalid dispute encountered")]
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InvalidDisputeFromCoordinator(#[source] DisputeMessageCheckError),
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/// This error does indicate a bug in the coordinator.
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///
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/// We did not receive votes on both sides for `CandidateVotes` received from the coordinator.
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#[error("Missing votes for valid dispute")]
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MissingVotesFromCoordinator,
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/// This error does indicate a bug in the coordinator.
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///
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/// `SignedDisputeStatement` could not be reconstructed from recorded statements.
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#[error("Invalid statements from coordinator")]
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InvalidStatementFromCoordinator,
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/// This error does indicate a bug in the coordinator.
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///
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/// A statement's `ValidatorIndex` could not be looked up.
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#[error("ValidatorIndex of statement could not be found")]
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InvalidValidatorIndexFromCoordinator,
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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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}
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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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