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This commit is contained in:
Yuriy Dupyn 2024-02-05 23:11:38 +01:00
parent ad98cfafb2
commit c25c6edc6a
29 changed files with 886 additions and 571 deletions
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29
storage_engine/src/cursor_capabilities/entry_modification.rs
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@ -1,14 +1,14 @@
use async_trait::async_trait;
use crate::binary_coding::encode;
use bincode;
use bincode::Encode;
use crate::binary_coding::encode;
use crate::cursor_capabilities::primitive::{CursorCanRead, CursorCanWrite};
use crate::cursor_capabilities::traversal::CursorCanTraverse;
use crate::segments::entry::Entry;
use crate::segments::store_header::StoreHeader;
use crate::store::{FilePosition, Result};
use crate::cursor_capabilities::primitive::{CursorCanRead, CursorCanWrite};
use crate::cursor_capabilities::traversal::CursorCanTraverse;
#[async_trait]
pub trait CursorCanModifyEntries<T>: CursorCanTraverse<T> + CursorCanWrite<T> {
@ -16,8 +16,9 @@ pub trait CursorCanModifyEntries<T>: CursorCanTraverse<T> + CursorCanWrite<T> {
fn set_eof_file_position(&mut self, new_file_position: FilePosition);
// ===Store Header Manipulation===
async fn increment_total_count(&mut self) -> Result<()>
where T: Send
async fn increment_total_count(&mut self) -> Result<()>
where
T: Send,
{
self.seek_to_start().await?;
self.seek_to(StoreHeader::TOTAL_COUNT_OFFSET as u64).await?;
@ -26,18 +27,21 @@ pub trait CursorCanModifyEntries<T>: CursorCanTraverse<T> + CursorCanWrite<T> {
Ok(())
}
async fn increment_deleted_count(&mut self) -> Result<()>
where T: Send
async fn increment_deleted_count(&mut self) -> Result<()>
where
T: Send,
{
self.seek_to_start().await?;
self.seek_to(StoreHeader::DELETED_COUNT_OFFSET as u64).await?;
self.seek_to(StoreHeader::DELETED_COUNT_OFFSET as u64)
.await?;
let new_count = self.header_mut().increment_deleted_count();
self.write_bytes(&encode::<usize>(&new_count)?).await?;
Ok(())
}
async fn set_header(&mut self, header: &StoreHeader) -> Result<()>
where T: Send
async fn set_header(&mut self, header: &StoreHeader) -> Result<()>
where
T: Send,
{
self.seek_to_start().await?;
let encoded_header: Vec<u8> = header.encode()?;
@ -50,8 +54,9 @@ pub trait CursorCanModifyEntries<T>: CursorCanTraverse<T> + CursorCanWrite<T> {
// Moves cursor to the end.
// Returns file position to the start of the new entry.
async fn append_entry_no_indexing(&mut self, entry: &Entry<T>) -> Result<FilePosition>
where T: Encode + Send + Sync
async fn append_entry_no_indexing(&mut self, entry: &Entry<T>) -> Result<FilePosition>
where
T: Encode + Send + Sync,
{
self.increment_total_count().await?;