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Introduce notion of finality to substrate (#760)

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* finalization for in_mem

* fetch last finalized block

* pruning: use canonical term instead of final

* finalize blocks in full node

* begin to port light client DB

* add tree-route

* keep number index consistent in full nodes

* fix tests

* disable cache and finish porting light client

* add AsMut to system module

* final leaf is always best

* fix all tests

* Fix comment and trace

* removed unused Into call

* add comment on behavior of `finalize_block`
This commit is contained in:
Robert Habermeier
2018-09-21 15:56:21 +02:00
committed by Gav Wood
parent 28cc4d0fd6
commit b7d095a2e0
19 changed files with 976 additions and 370 deletions
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substrate/core/state-db/src/pruning.rs
+7 -7
View File
@@ -137,7 +137,7 @@ impl<BlockHash: Hash, Key: Hash> RefWindow<BlockHash, Key> {
}
/// Add a change set to the window. Creates a journal record and pushes it to `commit`
pub fn note_finalized(&mut self, hash: &BlockHash, commit: &mut CommitSet<Key>) {
pub fn note_canonical(&mut self, hash: &BlockHash, commit: &mut CommitSet<Key>) {
trace!(target: "state-db", "Adding to pruning window: {:?} ({} inserted, {} deleted)", hash, commit.data.inserted.len(), commit.data.deleted.len());
let inserted = commit.data.inserted.iter().map(|(k, _)| k.clone()).collect();
let deleted = ::std::mem::replace(&mut commit.data.deleted, Vec::new());
@@ -192,7 +192,7 @@ mod tests {
let mut pruning: RefWindow<H256, H256> = RefWindow::new(&db).unwrap();
let mut commit = make_commit(&[4, 5], &[1, 3]);
let h = H256::random();
pruning.note_finalized(&h, &mut commit);
pruning.note_canonical(&h, &mut commit);
db.commit(&commit);
assert!(commit.data.deleted.is_empty());
assert_eq!(pruning.death_rows.len(), 1);
@@ -214,10 +214,10 @@ mod tests {
let mut db = make_db(&[1, 2, 3]);
let mut pruning: RefWindow<H256, H256> = RefWindow::new(&db).unwrap();
let mut commit = make_commit(&[4], &[1]);
pruning.note_finalized(&H256::random(), &mut commit);
pruning.note_canonical(&H256::random(), &mut commit);
db.commit(&commit);
let mut commit = make_commit(&[5], &[2]);
pruning.note_finalized(&H256::random(), &mut commit);
pruning.note_canonical(&H256::random(), &mut commit);
db.commit(&commit);
assert!(db.data_eq(&make_db(&[1, 2, 3, 4, 5])));
@@ -239,13 +239,13 @@ mod tests {
let mut db = make_db(&[1, 2, 3]);
let mut pruning: RefWindow<H256, H256> = RefWindow::new(&db).unwrap();
let mut commit = make_commit(&[], &[2]);
pruning.note_finalized(&H256::random(), &mut commit);
pruning.note_canonical(&H256::random(), &mut commit);
db.commit(&commit);
let mut commit = make_commit(&[2], &[]);
pruning.note_finalized(&H256::random(), &mut commit);
pruning.note_canonical(&H256::random(), &mut commit);
db.commit(&commit);
let mut commit = make_commit(&[], &[2]);
pruning.note_finalized(&H256::random(), &mut commit);
pruning.note_canonical(&H256::random(), &mut commit);
db.commit(&commit);
assert!(db.data_eq(&make_db(&[1, 2, 3])));