openethereum/parity/db/rocksdb/mod.rs

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// Copyright 2015-2018 Parity Technologies (UK) Ltd.
// This file is part of Parity.
// Parity 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 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. If not, see <http://www.gnu.org/licenses/>.
extern crate kvdb_rocksdb;
extern crate migration_rocksdb;
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use std::{io, fs};
use std::sync::Arc;
use std::path::Path;
use blooms_db;
use ethcore::{BlockChainDBHandler, BlockChainDB};
use ethcore::db::NUM_COLUMNS;
use ethcore::client::{ClientConfig, DatabaseCompactionProfile};
use kvdb::KeyValueDB;
use self::kvdb_rocksdb::{Database, DatabaseConfig};
use cache::CacheConfig;
mod blooms;
mod migration;
mod helpers;
pub use self::migration::migrate;
struct AppDB {
key_value: Arc<KeyValueDB>,
blooms: blooms_db::Database,
trace_blooms: blooms_db::Database,
}
impl BlockChainDB for AppDB {
fn key_value(&self) -> &Arc<KeyValueDB> {
&self.key_value
}
fn blooms(&self) -> &blooms_db::Database {
&self.blooms
}
fn trace_blooms(&self) -> &blooms_db::Database {
&self.trace_blooms
}
}
/// Open a secret store DB using the given secret store data path. The DB path is one level beneath the data path.
#[cfg(feature = "secretstore")]
pub fn open_secretstore_db(data_path: &str) -> Result<Arc<KeyValueDB>, String> {
use std::path::PathBuf;
let mut db_path = PathBuf::from(data_path);
db_path.push("db");
let db_path = db_path.to_str().ok_or_else(|| "Invalid secretstore path".to_string())?;
Ok(Arc::new(Database::open_default(&db_path).map_err(|e| format!("Error opening database: {:?}", e))?))
}
/// Create a restoration db handler using the config generated by `client_path` and `client_config`.
pub fn restoration_db_handler(client_path: &Path, client_config: &ClientConfig) -> Box<BlockChainDBHandler> {
let client_db_config = helpers::client_db_config(client_path, client_config);
struct RestorationDBHandler {
config: DatabaseConfig,
}
impl BlockChainDBHandler for RestorationDBHandler {
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fn open(&self, db_path: &Path) -> io::Result<Arc<BlockChainDB>> {
open_database(&db_path.to_string_lossy(), &self.config)
}
}
Box::new(RestorationDBHandler {
config: client_db_config,
})
}
/// Open a new main DB.
pub fn open_db(client_path: &str, cache_config: &CacheConfig, compaction: &DatabaseCompactionProfile) -> io::Result<Arc<BlockChainDB>> {
let path = Path::new(client_path);
let db_config = DatabaseConfig {
memory_budget: Some(cache_config.blockchain() as usize * 1024 * 1024),
compaction: helpers::compaction_profile(&compaction, path),
.. DatabaseConfig::with_columns(NUM_COLUMNS)
};
open_database(client_path, &db_config)
}
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pub fn open_database(client_path: &str, config: &DatabaseConfig) -> io::Result<Arc<BlockChainDB>> {
let path = Path::new(client_path);
let blooms_path = path.join("blooms");
let trace_blooms_path = path.join("trace_blooms");
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fs::create_dir_all(&blooms_path)?;
fs::create_dir_all(&trace_blooms_path)?;
let db = AppDB {
key_value: Arc::new(Database::open(&config, client_path)?),
blooms: blooms_db::Database::open(blooms_path)?,
trace_blooms: blooms_db::Database::open(trace_blooms_path)?,
};
Ok(Arc::new(db))
}