Flatten back the structure (#837)

* Remove chains. * Move relay clients. * Flatten generic. * Fix fmt.
2026-05-31 04:01:02 +00:00 · 2021-03-23 14:17:33 +01:00
parent 647eb80165
commit acb872fbb0
109 changed files with 87 additions and 86 deletions
@@ -0,0 +1,86 @@
+// Copyright 2019-2020 Parity Technologies (UK) Ltd.
+// This file is part of Parity Bridges Common.
+
+// Parity Bridges Common 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.
+
+// Parity Bridges Common 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 Parity Bridges Common.  If not, see <http://www.gnu.org/licenses/>.
+
+//! Ethereum node RPC errors.
+
+use crate::types::U256;
+
+use jsonrpsee_types::error::Error as RpcError;
+use relay_utils::MaybeConnectionError;
+
+/// Result type used by Ethereum client.
+pub type Result<T> = std::result::Result<T, Error>;
+
+/// Errors that can occur only when interacting with
+/// an Ethereum node through RPC.
+#[derive(Debug)]
+pub enum Error {
+	/// An error that can occur when making an HTTP request to
+	/// an JSON-RPC client.
+	RpcError(RpcError),
+	/// Failed to parse response.
+	ResponseParseFailed(String),
+	/// We have received a header with missing fields.
+	IncompleteHeader,
+	/// We have received a transaction missing a `raw` field.
+	IncompleteTransaction,
+	/// An invalid Substrate block number was received from
+	/// an Ethereum node.
+	InvalidSubstrateBlockNumber,
+	/// An invalid index has been received from an Ethereum node.
+	InvalidIncompleteIndex,
+	/// The client we're connected to is not synced, so we can't rely on its state. Contains
+	/// number of unsynced headers.
+	ClientNotSynced(U256),
+}
+
+impl From<RpcError> for Error {
+	fn from(error: RpcError) -> Self {
+		Error::RpcError(error)
+	}
+}
+
+impl MaybeConnectionError for Error {
+	fn is_connection_error(&self) -> bool {
+		matches!(
+			*self,
+			Error::RpcError(RpcError::TransportError(_))
+				// right now if connection to the ws server is dropped (after it is already established),
+				// we're getting this error
+				| Error::RpcError(RpcError::Internal(_))
+				| Error::ClientNotSynced(_),
+		)
+	}
+}
+
+impl ToString for Error {
+	fn to_string(&self) -> String {
+		match self {
+			Self::RpcError(e) => e.to_string(),
+			Self::ResponseParseFailed(e) => e.to_string(),
+			Self::IncompleteHeader => {
+				"Incomplete Ethereum Header Received (missing some of required fields - hash, number, logs_bloom)"
+					.to_string()
+			}
+			Self::IncompleteTransaction => "Incomplete Ethereum Transaction (missing required field - raw)".to_string(),
+			Self::InvalidSubstrateBlockNumber => "Received an invalid Substrate block from Ethereum Node".to_string(),
+			Self::InvalidIncompleteIndex => "Received an invalid incomplete index from Ethereum Node".to_string(),
+			Self::ClientNotSynced(missing_headers) => {
+				format!("Ethereum client is not synced: syncing {} headers", missing_headers)
+			}
+		}
+	}
+}