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pezkuwi-subxt/substrate/client/finality-grandpa/rpc/src/error.rs
T
2022-01-03 09:22:14 +01:00

76 lines
2.7 KiB
Rust

// This file is part of Substrate.
// Copyright (C) 2020-2022 Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
// This program 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.
// This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
#[derive(derive_more::Display, derive_more::From)]
/// Top-level error type for the RPC handler
pub enum Error {
/// The GRANDPA RPC endpoint is not ready.
#[display(fmt = "GRANDPA RPC endpoint not ready")]
EndpointNotReady,
/// GRANDPA reports the authority set id to be larger than 32-bits.
#[display(fmt = "GRANDPA reports authority set id unreasonably large")]
AuthoritySetIdReportedAsUnreasonablyLarge,
/// GRANDPA reports voter state with round id or weights larger than 32-bits.
#[display(fmt = "GRANDPA reports voter state as unreasonably large")]
VoterStateReportsUnreasonablyLargeNumbers,
/// GRANDPA prove finality failed.
#[display(fmt = "GRANDPA prove finality rpc failed: {}", _0)]
ProveFinalityFailed(sc_finality_grandpa::FinalityProofError),
}
/// The error codes returned by jsonrpc.
pub enum ErrorCode {
/// Returned when Grandpa RPC endpoint is not ready.
NotReady = 1,
/// Authority set ID is larger than 32-bits.
AuthoritySetTooLarge,
/// Voter state with round id or weights larger than 32-bits.
VoterStateTooLarge,
/// Failed to prove finality.
ProveFinality,
}
impl From<Error> for ErrorCode {
fn from(error: Error) -> Self {
match error {
Error::EndpointNotReady => ErrorCode::NotReady,
Error::AuthoritySetIdReportedAsUnreasonablyLarge => ErrorCode::AuthoritySetTooLarge,
Error::VoterStateReportsUnreasonablyLargeNumbers => ErrorCode::VoterStateTooLarge,
Error::ProveFinalityFailed(_) => ErrorCode::ProveFinality,
}
}
}
impl From<Error> for jsonrpc_core::Error {
fn from(error: Error) -> Self {
let message = format!("{}", error);
let code = ErrorCode::from(error);
jsonrpc_core::Error {
message,
code: jsonrpc_core::ErrorCode::ServerError(code as i64),
data: None,
}
}
}
impl From<std::num::TryFromIntError> for Error {
fn from(_error: std::num::TryFromIntError) -> Self {
Error::VoterStateReportsUnreasonablyLargeNumbers
}
}