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https://github.com/pezkuwichain/pezkuwi-subxt.git
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Vladislav
5842968273
* Unify error enums in substrate and ethereum clients with `thiserror` Related to https://github.com/paritytech/parity-bridges-common/issues/857 * Add license pre-amble * rustfmt * Fix spelling
83 lines
2.9 KiB
Rust
83 lines
2.9 KiB
Rust
// Copyright 2019-2021 Parity Technologies (UK) Ltd.
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// This file is part of Parity Bridges Common.
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// Parity Bridges Common 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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// Parity Bridges Common 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 Parity Bridges Common. If not, see <http://www.gnu.org/licenses/>.
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//! Ethereum node RPC errors.
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use crate::types::U256;
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use jsonrpsee_ws_client::types::Error as RpcError;
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use relay_utils::MaybeConnectionError;
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use thiserror::Error;
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/// Result type used by Ethereum client.
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pub type Result<T> = std::result::Result<T, Error>;
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/// Errors that can occur only when interacting with
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/// an Ethereum node through RPC.
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#[derive(Debug, Error)]
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pub enum Error {
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/// IO error.
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#[error("IO error: {0}")]
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Io(#[from] std::io::Error),
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/// An error that can occur when making an HTTP request to
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/// an JSON-RPC client.
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#[error("RPC error: {0}")]
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RpcError(#[from] RpcError),
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/// Failed to parse response.
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#[error("Response parse failed: {0}")]
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ResponseParseFailed(String),
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/// We have received a header with missing fields.
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#[error("Incomplete Ethereum Header Received (missing some of required fields - hash, number, logs_bloom).")]
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IncompleteHeader,
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/// We have received a transaction missing a `raw` field.
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#[error("Incomplete Ethereum Transaction (missing required field - raw).")]
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IncompleteTransaction,
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/// An invalid Substrate block number was received from
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/// an Ethereum node.
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#[error("Received an invalid Substrate block from Ethereum Node.")]
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InvalidSubstrateBlockNumber,
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/// An invalid index has been received from an Ethereum node.
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#[error("Received an invalid incomplete index from Ethereum Node.")]
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InvalidIncompleteIndex,
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/// The client we're connected to is not synced, so we can't rely on its state. Contains
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/// number of unsynced headers.
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#[error("Ethereum client is not synced: syncing {0} headers.")]
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ClientNotSynced(U256),
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/// Custom logic error.
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#[error("{0}")]
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Custom(String),
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}
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impl From<tokio::task::JoinError> for Error {
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fn from(error: tokio::task::JoinError) -> Self {
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Error::Custom(format!("Failed to wait tokio task: {}", error))
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}
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}
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impl MaybeConnectionError for Error {
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fn is_connection_error(&self) -> bool {
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matches!(
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*self,
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Error::RpcError(RpcError::Transport(_))
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// right now if connection to the ws server is dropped (after it is already established),
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// we're getting this error
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| Error::RpcError(RpcError::Internal(_))
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| Error::RpcError(RpcError::RestartNeeded(_))
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| Error::ClientNotSynced(_),
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)
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}
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}
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