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rename inject to drain_transaction_overlay (#11657) 

* Drain the transaction overlay

* journaldb: rename inject to drain_transaction_overlay

Co-authored-by: David Palm <dvdplm@gmail.com>
This commit is contained in:
Andronik Ordian 2020-04-27 15:36:07 +02:00 committed by GitHub
parent 114074c939
commit cb9800f04c
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GPG Key ID: 4AEE18F83AFDEB23
6 changed files with 32 additions and 46 deletions
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8
ethcore/snapshot/src/lib.rs
View File

@ -435,12 +435,8 @@ impl StateRebuilder {
}
}
let backing = self.db.backing().clone();
let mut batch = backing.transaction();
// Drain the transaction overlay and put the data into the batch.
self.db.inject(&mut batch)?;
backing.write_buffered(batch);
let batch = self.db.drain_transaction_overlay()?;
self.db.backing().write(batch)?;
Ok(())
}

15
util/journaldb/src/archivedb.rs
View File

@ -142,9 +142,8 @@ impl JournalDB for ArchiveDB {
Ok(0)
}
fn inject(&mut self, batch: &mut DBTransaction) -> io::Result<u32> {
let mut inserts = 0usize;
let mut deletes = 0usize;
fn drain_transaction_overlay(&mut self) -> io::Result<DBTransaction> {
let mut batch = DBTransaction::new();
for i in self.overlay.drain() {
let (key, (value, rc)) = i;
@ -153,7 +152,6 @@ impl JournalDB for ArchiveDB {
return Err(error_key_already_exists(&key));
}
batch.put(self.column, key.as_bytes(), &value);
inserts += 1;
}
if rc < 0 {
assert!(rc == -1);
@ -161,11 +159,10 @@ impl JournalDB for ArchiveDB {
return Err(error_negatively_reference_hash(&key));
}
batch.delete(self.column, key.as_bytes());
deletes += 1;
}
}
Ok((inserts + deletes) as u32)
Ok(batch)
}
fn latest_era(&self) -> Option<u64> { self.latest_era }
@ -209,7 +206,7 @@ mod tests {
use hash_db::{HashDB, EMPTY_PREFIX};
use super::*;
use kvdb_memorydb;
use crate::{JournalDB, inject_batch, commit_batch};
use crate::{JournalDB, drain_overlay, commit_batch};
#[test]
fn insert_same_in_fork() {
@ -463,11 +460,11 @@ mod tests {
fn inject() {
let mut jdb = ArchiveDB::new(Arc::new(kvdb_memorydb::create(1)), 0);
let key = jdb.insert(EMPTY_PREFIX, b"dog");
inject_batch(&mut jdb).unwrap();
drain_overlay(&mut jdb).unwrap();
assert_eq!(jdb.get(&key, EMPTY_PREFIX).unwrap(), b"dog".to_vec());
jdb.remove(&key, EMPTY_PREFIX);
inject_batch(&mut jdb).unwrap();
drain_overlay(&mut jdb).unwrap();
assert!(jdb.get(&key, EMPTY_PREFIX).is_none());
}

14
util/journaldb/src/earlymergedb.rs
View File

@ -474,11 +474,9 @@ impl JournalDB for EarlyMergeDB {
Ok(0)
}
fn inject(&mut self, batch: &mut DBTransaction) -> io::Result<u32> {
let mut ops = 0;
fn drain_transaction_overlay(&mut self) -> io::Result<DBTransaction> {
let mut batch = DBTransaction::new();
for (key, (value, rc)) in self.overlay.drain() {
if rc != 0 { ops += 1 }
match rc {
0 => {}
1 => {
@ -497,7 +495,7 @@ impl JournalDB for EarlyMergeDB {
}
}
Ok(ops)
Ok(batch)
}
fn consolidate(&mut self, with: super::MemoryDB) {
@ -529,7 +527,7 @@ mod tests {
use hash_db::{HashDB, EMPTY_PREFIX};
use super::*;
use kvdb_memorydb;
use crate::{inject_batch, commit_batch};
use crate::{drain_overlay, commit_batch};
#[test]
fn insert_same_in_fork() {
@ -1050,11 +1048,11 @@ mod tests {
fn inject() {
let mut jdb = new_db();
let key = jdb.insert(EMPTY_PREFIX, b"dog");
inject_batch(&mut jdb).unwrap();
drain_overlay(&mut jdb).unwrap();
assert_eq!(jdb.get(&key, EMPTY_PREFIX).unwrap(), b"dog".to_vec());
jdb.remove(&key, EMPTY_PREFIX);
inject_batch(&mut jdb).unwrap();
drain_overlay(&mut jdb).unwrap();
assert!(jdb.get(&key, EMPTY_PREFIX).is_none());
}

16
util/journaldb/src/lib.rs
View File

@ -72,11 +72,8 @@ pub trait JournalDB: HashDB<KeccakHasher, DBValue> {
/// Commit all queued insert and delete operations without affecting any journalling -- this requires that all insertions
/// and deletions are indeed canonical and will likely lead to an invalid database if that assumption is violated.
///
/// Any keys or values inserted or deleted must be completely independent of those affected
/// by any previous `commit` operations. Essentially, this means that `inject` can be used
/// either to restore a state to a fresh database, or to insert data which may only be journalled
/// from this point onwards.
fn inject(&mut self, batch: &mut DBTransaction) -> io::Result<u32>;
/// Returns a transaction to be committed.
fn drain_transaction_overlay(&mut self) -> io::Result<DBTransaction>;
/// State data query
fn state(&self, _id: &H256) -> Option<Bytes>;
@ -213,12 +210,11 @@ pub fn new_memory_db() -> MemoryDB {
MemoryDB::from_null_node(&rlp::NULL_RLP, rlp::NULL_RLP.as_ref().into())
}
#[cfg(test)]
/// Inject all changes in a single batch.
pub fn inject_batch(jdb: &mut dyn JournalDB) -> io::Result<u32> {
let mut batch = jdb.backing().transaction();
let res = jdb.inject(&mut batch)?;
jdb.backing().write(batch).map(|_| res).map_err(Into::into)
#[cfg(test)]
pub fn drain_overlay(jdb: &mut dyn JournalDB) -> io::Result<()> {
let batch = jdb.drain_transaction_overlay()?;
jdb.backing().write(batch).map_err(Into::into)
}
/// Commit all changes in a single batch

14
util/journaldb/src/overlayrecentdb.rs
View File

@ -397,11 +397,9 @@ impl JournalDB for OverlayRecentDB {
Ok(ops as u32)
}
fn inject(&mut self, batch: &mut DBTransaction) -> io::Result<u32> {
let mut ops = 0;
fn drain_transaction_overlay(&mut self) -> io::Result<DBTransaction> {
let mut batch = DBTransaction::new();
for (key, (value, rc)) in self.transaction_overlay.drain() {
if rc != 0 { ops += 1 }
match rc {
0 => {}
_ if rc > 0 => {
@ -417,7 +415,7 @@ impl JournalDB for OverlayRecentDB {
}
}
Ok(ops)
Ok(batch)
}
fn state(&self, key: &H256) -> Option<Bytes> {
@ -507,7 +505,7 @@ mod tests {
use super::*;
use hash_db::{HashDB, EMPTY_PREFIX};
use kvdb_memorydb;
use crate::{JournalDB, inject_batch, commit_batch};
use crate::{JournalDB, drain_overlay, commit_batch};
fn new_db() -> OverlayRecentDB {
let backing = Arc::new(kvdb_memorydb::create(1));
@ -1026,11 +1024,11 @@ mod tests {
fn inject() {
let mut jdb = new_db();
let key = jdb.insert(EMPTY_PREFIX, b"dog");
inject_batch(&mut jdb).unwrap();
drain_overlay(&mut jdb).unwrap();
assert_eq!(jdb.get(&key, EMPTY_PREFIX).unwrap(), b"dog".to_vec());
jdb.remove(&key, EMPTY_PREFIX);
inject_batch(&mut jdb).unwrap();
drain_overlay(&mut jdb).unwrap();
assert!(jdb.get(&key, EMPTY_PREFIX).is_none());
}

11
util/journaldb/src/refcounteddb.rs
View File

@ -193,12 +193,13 @@ impl JournalDB for RefCountedDB {
Ok(r)
}
fn inject(&mut self, batch: &mut DBTransaction) -> io::Result<u32> {
fn drain_transaction_overlay(&mut self) -> io::Result<DBTransaction> {
self.inserts.clear();
for remove in self.removes.drain(..) {
self.forward.remove(&remove, EMPTY_PREFIX);
}
self.forward.commit_to_batch(batch)
let mut batch = DBTransaction::new();
self.forward.commit_to_batch(&mut batch).map(|_| batch)
}
fn consolidate(&mut self, mut with: super::MemoryDB) {
@ -224,7 +225,7 @@ mod tests {
use hash_db::{HashDB, EMPTY_PREFIX};
use super::*;
use kvdb_memorydb;
use crate::{JournalDB, inject_batch, commit_batch};
use crate::{JournalDB, drain_overlay, commit_batch};
fn new_db() -> RefCountedDB {
let backing = Arc::new(kvdb_memorydb::create(1));
@ -338,11 +339,11 @@ mod tests {
fn inject() {
let mut jdb = new_db();
let key = jdb.insert(EMPTY_PREFIX, b"dog");
inject_batch(&mut jdb).unwrap();
drain_overlay(&mut jdb).unwrap();
assert_eq!(jdb.get(&key, EMPTY_PREFIX).unwrap(), b"dog".to_vec());
jdb.remove(&key, EMPTY_PREFIX);
inject_batch(&mut jdb).unwrap();
drain_overlay(&mut jdb).unwrap();
assert!(jdb.get(&key, EMPTY_PREFIX).is_none());
}