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finish week 1 day 3+4 block/sst

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Signed-off-by: Alex Chi Z <iskyzh@gmail.com>
This commit is contained in:
Alex Chi Z
2024-01-21 14:21:09 +08:00
parent f88394a686
commit 9eb197114d
9 changed files with 237 additions and 39 deletions
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16
mini-lsm-starter/src/table.rs
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@@ -79,18 +79,14 @@ impl FileObject {
}
}
/// -------------------------------------------------------------------------------------------------------
/// | Data Block | Meta Block | Extra |
/// -------------------------------------------------------------------------------------------------------
/// | Data Block #1 | ... | Data Block #N | Meta Block #1 | ... | Meta Block #N | Meta Block Offset (u32) |
/// -------------------------------------------------------------------------------------------------------
/// An SSTable.
pub struct SsTable {
/// The actual storage unit of SsTable, the format is as above.
file: FileObject,
pub(crate) file: FileObject,
/// The meta blocks that hold info for data blocks.
block_metas: Vec<BlockMeta>,
pub(crate) block_meta: Vec<BlockMeta>,
/// The offset that indicates the start point of meta blocks in `file`.
block_meta_offset: usize,
pub(crate) block_meta_offset: usize,
id: usize,
block_cache: Option<Arc<BlockCache>>,
first_key: Bytes,
@@ -112,7 +108,7 @@ impl SsTable {
pub fn create_meta_only(id: usize, file_size: u64, first_key: Bytes, last_key: Bytes) -> Self {
Self {
file: FileObject(None, file_size),
block_metas: vec![],
block_meta: vec![],
block_meta_offset: 0,
id,
block_cache: None,
@@ -140,7 +136,7 @@ impl SsTable {
/// Get number of data blocks.
pub fn num_of_blocks(&self) -> usize {
self.block_metas.len()
self.block_meta.len()
}
pub fn first_key(&self) -> &Bytes {