mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-04-27 06:57:58 +00:00
Arkadiy Paronyan
4cbbf0cf43
* Remove light client, change tries and CHTs * Update tests * fmt * Restore changes_root * Fixed benches * Cargo fmt * fmt * fmt
102 lines
2.9 KiB
Rust
102 lines
2.9 KiB
Rust
// This file is part of Substrate.
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// Copyright (C) 2017-2021 Parity Technologies (UK) Ltd.
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// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
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// This program 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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// This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
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use crate::{
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columns,
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utils::{DatabaseType, NUM_COLUMNS},
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};
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/// A `Database` adapter for parity-db.
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use sp_database::{error::DatabaseError, Change, ColumnId, Database, Transaction};
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struct DbAdapter(parity_db::Db);
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fn handle_err<T>(result: parity_db::Result<T>) -> T {
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match result {
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Ok(r) => r,
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Err(e) => {
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panic!("Critical database error: {:?}", e);
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},
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}
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}
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/// Wrap parity-db database into a trait object that implements `sp_database::Database`
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pub fn open<H: Clone + AsRef<[u8]>>(
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path: &std::path::Path,
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db_type: DatabaseType,
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create: bool,
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) -> parity_db::Result<std::sync::Arc<dyn Database<H>>> {
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let mut config = parity_db::Options::with_columns(path, NUM_COLUMNS as u8);
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match db_type {
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DatabaseType::Full => {
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let indexes = [
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columns::STATE,
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columns::HEADER,
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columns::BODY,
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columns::TRANSACTION,
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columns::JUSTIFICATIONS,
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];
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for i in indexes {
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let mut column = &mut config.columns[i as usize];
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column.compression = parity_db::CompressionType::Lz4;
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}
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let mut state_col = &mut config.columns[columns::STATE as usize];
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state_col.ref_counted = true;
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state_col.preimage = true;
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state_col.uniform = true;
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},
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}
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let db = if create {
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parity_db::Db::open_or_create(&config)?
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} else {
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parity_db::Db::open(&config)?
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};
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Ok(std::sync::Arc::new(DbAdapter(db)))
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}
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impl<H: Clone + AsRef<[u8]>> Database<H> for DbAdapter {
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fn commit(&self, transaction: Transaction<H>) -> Result<(), DatabaseError> {
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handle_err(self.0.commit(transaction.0.into_iter().map(|change| match change {
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Change::Set(col, key, value) => (col as u8, key, Some(value)),
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Change::Remove(col, key) => (col as u8, key, None),
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_ => unimplemented!(),
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})));
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Ok(())
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}
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fn get(&self, col: ColumnId, key: &[u8]) -> Option<Vec<u8>> {
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handle_err(self.0.get(col as u8, key))
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}
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fn contains(&self, col: ColumnId, key: &[u8]) -> bool {
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handle_err(self.0.get_size(col as u8, key)).is_some()
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}
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fn value_size(&self, col: ColumnId, key: &[u8]) -> Option<usize> {
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handle_err(self.0.get_size(col as u8, key)).map(|s| s as usize)
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}
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fn supports_ref_counting(&self) -> bool {
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true
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}
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}
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