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core: Introduce Wal trait

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We're going to need it for WebAssembly anyway, which does not have
standard filesystem support.
This commit is contained in:
Pekka Enberg 2024-08-03 12:25:58 +03:00
parent d9b1cac27b
commit ed4116e7c2
4 changed files with 85 additions and 32 deletions
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20
core/lib.rs
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@ -23,6 +23,8 @@ use std::{cell::RefCell, rc::Rc};
use storage::database::FileStorage;
use storage::pager::Pager;
use storage::sqlite3_ondisk::DatabaseHeader;
#[cfg(feature = "fs")]
use storage::wal::WalFile;
pub use error::LimboError;
pub type Result<T> = std::result::Result<T, error::LimboError>;
@ -31,6 +33,8 @@ pub type Result<T> = std::result::Result<T, error::LimboError>;
pub use io::PlatformIO;
pub use io::{Buffer, Completion, File, WriteCompletion, IO};
pub use storage::database::DatabaseStorage;
pub use storage::pager::Page;
pub use storage::wal::Wal;
pub use types::Value;
pub struct Database {
@ -44,13 +48,23 @@ impl Database {
pub fn open_file(io: Arc<dyn crate::io::IO>, path: &str) -> Result<Database> {
let file = io.open_file(path)?;
let page_io = Rc::new(FileStorage::new(file));
Self::open(io, page_io)
let wal = Rc::new(WalFile::new());
Self::open(io, page_io, wal)
}
pub fn open(io: Arc<dyn crate::io::IO>, page_io: Rc<dyn DatabaseStorage>) -> Result<Database> {
pub fn open(
io: Arc<dyn crate::io::IO>,
page_io: Rc<dyn DatabaseStorage>,
wal: Rc<dyn Wal>,
) -> Result<Database> {
let db_header = Pager::begin_open(page_io.clone())?;
io.run_once()?;
let pager = Rc::new(Pager::finish_open(db_header.clone(), page_io, io.clone())?);
let pager = Rc::new(Pager::finish_open(
db_header.clone(),
page_io,
wal,
io.clone(),
)?);
let bootstrap_schema = Rc::new(Schema::new());
let conn = Connection {
pager: pager.clone(),