103 lines
3.3 KiB
Rust
103 lines
3.3 KiB
Rust
// Copyright 2015-2017 Parity Technologies (UK) Ltd.
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// This file is part of Parity.
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// Parity 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 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. If not, see <http://www.gnu.org/licenses/>.
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//! Snapshot-related errors.
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use std::fmt;
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use ids::BlockId;
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use util::H256;
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use util::trie::TrieError;
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use rlp::DecoderError;
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/// Snapshot-related errors.
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#[derive(Debug)]
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pub enum Error {
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/// Invalid starting block for snapshot.
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InvalidStartingBlock(BlockId),
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/// Block not found.
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BlockNotFound(H256),
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/// Incomplete chain.
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IncompleteChain,
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/// Best block has wrong state root.
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WrongStateRoot(H256, H256),
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/// Wrong block hash.
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WrongBlockHash(u64, H256, H256),
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/// Too many blocks contained within the snapshot.
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TooManyBlocks(u64, u64),
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/// Old starting block in a pruned database.
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OldBlockPrunedDB,
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/// Missing code.
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MissingCode(Vec<H256>),
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/// Unrecognized code encoding.
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UnrecognizedCodeState(u8),
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/// Restoration aborted.
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RestorationAborted,
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/// Trie error.
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Trie(TrieError),
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/// Decoder error.
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Decoder(DecoderError),
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/// Io error.
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Io(::std::io::Error),
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}
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impl fmt::Display for Error {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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match *self {
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Error::InvalidStartingBlock(ref id) => write!(f, "Invalid starting block: {:?}", id),
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Error::BlockNotFound(ref hash) => write!(f, "Block not found in chain: {}", hash),
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Error::IncompleteChain => write!(f, "Incomplete blockchain."),
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Error::WrongStateRoot(ref expected, ref found) => write!(f, "Final block has wrong state root. Expected {:?}, got {:?}", expected, found),
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Error::WrongBlockHash(ref num, ref expected, ref found) =>
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write!(f, "Block {} had wrong hash. expected {:?}, got {:?}", num, expected, found),
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Error::TooManyBlocks(ref expected, ref found) => write!(f, "Snapshot contained too many blocks. Expected {}, got {}", expected, found),
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Error::OldBlockPrunedDB => write!(f, "Attempted to create a snapshot at an old block while using \
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a pruned database. Please re-run with the --pruning archive flag."),
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Error::MissingCode(ref missing) => write!(f, "Incomplete snapshot: {} contract codes not found.", missing.len()),
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Error::UnrecognizedCodeState(state) => write!(f, "Unrecognized code encoding ({})", state),
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Error::RestorationAborted => write!(f, "Snapshot restoration aborted."),
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Error::Io(ref err) => err.fmt(f),
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Error::Decoder(ref err) => err.fmt(f),
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Error::Trie(ref err) => err.fmt(f),
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}
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}
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}
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impl From<::std::io::Error> for Error {
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fn from(err: ::std::io::Error) -> Self {
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Error::Io(err)
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}
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}
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impl From<TrieError> for Error {
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fn from(err: TrieError) -> Self {
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Error::Trie(err)
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}
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}
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impl From<DecoderError> for Error {
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fn from(err: DecoderError) -> Self {
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Error::Decoder(err)
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}
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}
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impl<E> From<Box<E>> for Error where Error: From<E> {
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fn from(err: Box<E>) -> Self {
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Error::from(*err)
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}
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}
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