omedusyo/minisql
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Rename cursor ~> file_position

Browse source
This commit is contained in:
Yuriy Dupyn 2024-02-02 19:04:51 +01:00
parent cac34d95e0
commit 28741006e7
2 changed files with 81 additions and 46 deletions
Download patch file Download diff file Expand all files Collapse all files

27
storage_engine/src/main.rs
View file

@ -20,7 +20,8 @@ type Result<T> = std::result::Result<T, std::io::Error>;
async fn create_store() -> Result<Store<Data>> {
let mut store: Store<Data> = Store::new(TABLE_PATH, 5, 0).await.map_err(|e| e.to_io_or_panic())?;
println!("CREATED");
println!("{:?}", store.read_all_bytes().await?);
println!("THE STORE: {:?}", store);
println!("THE BYTES: {:?}", store.read_all_bytes().await?);
let entry0: Entry<u32> = Entry::new_deleted(vec![1, 2, 3, 4, 5]);
append_entry(&mut store, &entry0).await?;
@ -31,10 +32,12 @@ async fn create_store() -> Result<Store<Data>> {
println!("{:?}", store.read_all_bytes().await?);
Ok(store)
}
async fn connect_store() -> Result<Store<Data>> {
let mut store: Store<Data> = Store::connect(TABLE_PATH).await.map_err(|e| e.to_io_or_panic())?;
println!("CONNECTED");
println!("{:?}", store.read_all_bytes().await?);
println!("THE STORE: {:?}", store);
println!("THE BYTES: {:?}", store.read_all_bytes().await?);
Ok(store)
}
@ -48,17 +51,17 @@ async fn create_or_connect() -> Result<Store<Data>> {
}
async fn append_entry(store: &mut Store<Data>, entry: &Entry<Data>) -> Result<Cursor>{
async fn append_entry(store: &mut Store<Data>, entry: &Entry<Data>) -> Result<FilePosition>{
println!("APPENDING");
println!("entry == {:?}", entry);
let cursor: Cursor = store.append_entry(&entry).await.map_err(|e| e.to_io_or_panic())?;
println!("cursor == {:?}", cursor);
Ok(cursor)
let file_position: FilePosition = store.append_entry(&entry).await.map_err(|e| e.to_io_or_panic())?;
println!("file_position == {:?}", file_position);
Ok(file_position)
}
async fn read_entry(store: &mut Store<Data>, cursor: Cursor) -> Result<EntryDetailed<Data>>{
println!("READING ENTRY at cursor={}", cursor);
let entry = store.read_entry_at(cursor).await.map_err(|e| e.to_io_or_panic())?;
async fn read_entry(store: &mut Store<Data>, file_position: FilePosition) -> Result<Option<EntryDetailed<Data>>>{
println!("READING ENTRY at file_position={}", file_position);
let entry = store.read_entry_at(file_position).await.map_err(|e| e.to_io_or_panic())?;
println!("ENTRY: {:?}", entry);
Ok(entry)
}
@ -75,10 +78,10 @@ async fn main() -> Result<()> {
// println!("{:?}", store);
// println!("{:?}", store.read_all_bytes().await?);
// let entry0: Entry<u32> = Entry::new(vec![99, 98, 97, 96, 95]);
// append_entry(&mut store, &entry0).await?;
let entry0: Entry<u32> = Entry::new(vec![99, 98, 97, 96, 95]);
append_entry(&mut store, &entry0).await?;
store.read_entries(2).await.map_err(|e| e.to_io_or_panic())?;
store.read_entries().await.map_err(|e| e.to_io_or_panic())?;
// let entry2: StoreEntry<u32> = StoreEntry::new_deleted(vec![3, 2, 1]);