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Code Issues Packages Projects Releases Wiki Activity

Support reference-counting state backend. (#5769)

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* Optimize pinning

* Ref counting state backend

* Style

Co-Authored-By: Wei Tang <hi@that.world>

* Update Cargo.lock

* Handle empty node

Co-authored-by: Wei Tang <hi@that.world>
This commit is contained in:
Arkadiy Paronyan
2020-04-27 12:24:50 +02:00
committed by GitHub
parent 636ddd95d2
commit 64ed36d093
11 changed files with 281 additions and 189 deletions
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substrate/client/db/src/parity_db.rs
+9 -2
View File
@@ -17,6 +17,8 @@
/// A `Database` adapter for parity-db.
use sp_database::{Database, Change, Transaction, ColumnId};
use crate::utils::NUM_COLUMNS;
use crate::columns;
struct DbAdapter(parity_db::Db);
@@ -30,8 +32,13 @@ fn handle_err<T>(result: parity_db::Result<T>) -> T {
}
/// Wrap RocksDb database into a trait object that implements `sp_database::Database`
pub fn open<H: Clone>(path: &std::path::Path, num_columns: u32) -> parity_db::Result<std::sync::Arc<dyn Database<H>>> {
let db = parity_db::Db::with_columns(path, num_columns as u8)?;
pub fn open<H: Clone>(path: &std::path::Path) -> parity_db::Result<std::sync::Arc<dyn Database<H>>> {
let mut config = parity_db::Options::with_columns(path, NUM_COLUMNS as u8);
let mut state_col = &mut config.columns[columns::STATE as usize];
state_col.ref_counted = true;
state_col.preimage = true;
state_col.uniform = true;
let db = parity_db::Db::open(&config)?;
Ok(std::sync::Arc::new(DbAdapter(db)))
}