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This commit is contained in:
Gav Wood 2016-01-16 11:52:28 +01:00
parent 5a2fab8b64
commit b4556c3436
2 changed files with 37 additions and 5 deletions
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8
src/blockchain.rs
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@ -248,6 +248,14 @@ impl BlockChain {
bc
}
/// Ensure that the best block does indeed have a state_root in the state DB.
/// If it doesn't, then rewind down until we find one that does and delete data to ensure that
/// later blocks will be reimported.
pub fn ensure_good(&mut self, _state: &OverlayDB) {
info!("Rescuing database.");
// TODO.
}
/// Returns a tree route between `from` and `to`, which is a tuple of:
///
/// - a vector of hashes of all blocks, ordered from `from` to `to`.

34
src/client.rs
View File

@ -1,5 +1,6 @@
use util::*;
use rocksdb::{DB};
use rocksdb::{Options, DB};
use rocksdb::DBCompactionStyle::DBUniversalCompaction;
use blockchain::{BlockChain, BlockProvider};
use views::BlockView;
use error::*;
@ -108,19 +109,42 @@ impl Client {
/// Create a new client with given spec and DB path.
pub fn new(spec: Spec, path: &Path, message_channel: IoChannel<NetSyncMessage> ) -> Result<Client, Error> {
let chain = Arc::new(RwLock::new(BlockChain::new(&spec.genesis_block(), path)));
let engine = Arc::new(try!(spec.to_engine()));
let mut opts = Options::new();
opts.create_if_missing(true);
opts.set_max_open_files(256);
opts.set_use_fsync(false);
opts.set_bytes_per_sync(8388608);
opts.set_disable_data_sync(false);
opts.set_block_cache_size_mb(1024);
opts.set_table_cache_num_shard_bits(6);
opts.set_max_write_buffer_number(32);
opts.set_write_buffer_size(536870912);
opts.set_target_file_size_base(1073741824);
opts.set_min_write_buffer_number_to_merge(4);
opts.set_level_zero_stop_writes_trigger(2000);
opts.set_level_zero_slowdown_writes_trigger(0);
opts.set_compaction_style(DBUniversalCompaction);
opts.set_max_background_compactions(4);
opts.set_max_background_flushes(4);
opts.set_filter_deletes(false);
opts.set_disable_auto_compactions(true);
let mut state_path = path.to_path_buf();
state_path.push("state");
let db = DB::open_default(state_path.to_str().unwrap()).unwrap();
let db = DB::open(&opts, state_path.to_str().unwrap()).unwrap();
let mut state_db = OverlayDB::new(db);
let engine = Arc::new(try!(spec.to_engine()));
engine.spec().ensure_db_good(&mut state_db);
state_db.commit().expect("Error commiting genesis state to state DB");
chain.write().unwrap().ensure_good(&state_db);
Ok(Client {
chain: chain.clone(),
chain: chain,
engine: engine.clone(),
state_db: state_db,
queue: BlockQueue::new(engine.clone(), message_channel),
queue: BlockQueue::new(engine, message_channel),
})
}