maokaihe/mini_lsm
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

add key abstraction and prepare for MVCC (#28)

Browse Source 
* add key abstraction and prepare for MVCC

Signed-off-by: Alex Chi <iskyzh@gmail.com>

* a little bit type exercise

Signed-off-by: Alex Chi <iskyzh@gmail.com>

* refactor tests

Signed-off-by: Alex Chi <iskyzh@gmail.com>

* fix clippy warnings

Signed-off-by: Alex Chi <iskyzh@gmail.com>

* refactor starter code

Signed-off-by: Alex Chi <iskyzh@gmail.com>

* final touch docs

Signed-off-by: Alex Chi <iskyzh@gmail.com>

---------

Signed-off-by: Alex Chi <iskyzh@gmail.com>
This commit is contained in:
Alex Chi Z
2024-01-25 10:59:08 +08:00
committed by GitHub
parent 2fefe3e505
commit a3a92359e1
42 changed files with 824 additions and 281 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
mini-lsm/src/mem_table.rs
View File

@@ -10,6 +10,7 @@ use crossbeam_skiplist::SkipMap;
use ouroboros::self_referencing;
use crate::iterators::StorageIterator;
use crate::key::KeySlice;
use crate::table::SsTableBuilder;
use crate::wal::Wal;
@@ -110,7 +111,7 @@ impl MemTable {
/// Flush the mem-table to SSTable. Implement in week 1 day 6.
pub fn flush(&self, builder: &mut SsTableBuilder) -> Result<()> {
for entry in self.map.iter() {
builder.add(&entry.key()[..], &entry.value()[..]);
builder.add(KeySlice::from_slice(&entry.key()[..]), &entry.value()[..]);
}
Ok(())
}
@@ -158,12 +159,14 @@ impl MemTableIterator {
}
impl StorageIterator for MemTableIterator {
type KeyType<'a> = KeySlice<'a>;
fn value(&self) -> &[u8] {
&self.borrow_item().1[..]
}
fn key(&self) -> &[u8] {
&self.borrow_item().0[..]
fn key(&self) -> KeySlice {
KeySlice::from_slice(&self.borrow_item().0[..])
}
fn is_valid(&self) -> bool {