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// Copyright 2020 Parity Technologies (UK) Ltd.
// This file is part of Polkadot.
// Polkadot is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Polkadot is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Polkadot. If not, see <http://www.gnu.org/licenses/>.
//! The `Error` and `Result` types used by the subsystem.
use futures::channel::oneshot;
use thiserror::Error;
/// Error type used by the Availability Recovery subsystem.
#[derive(Debug, Error)]
pub enum Error {
#[error(transparent)]
Subsystem(#[from] polkadot_node_subsystem::SubsystemError),
#[error("failed to query full data from store")]
CanceledQueryFullData(#[source] oneshot::Canceled),
#[error("failed to query session info")]
CanceledSessionInfo(#[source] oneshot::Canceled),
#[error("failed to send response")]
CanceledResponseSender,
#[error(transparent)]
Runtime(#[from] polkadot_node_subsystem::errors::RuntimeApiError),
#[error(transparent)]
Erasure(#[from] polkadot_erasure_coding::Error),
#[error(transparent)]
Util(#[from] polkadot_node_subsystem_util::Error),
}
pub type Result<T> = std::result::Result<T, Error>;