Retire native WAL

The native WAL code is not production ready and is currently not
maintained. Therefore, let's retire the code.

Author: penberg

Cargo.lock

@@ -16,7 +16,6 @@ members = [
   "vendored/sqlite3-parser",
 
   "xtask", "libsql-hrana",
-  "libsql-wal",
   "libsql-storage",
   "libsql-storage-server",
 ]

Cargo.toml

@@ -12,7 +12,6 @@ license = "MIT"
 tonic = { version = "0.11", default-features = false, features = ["codegen", "prost"] }
 prost = "0.12"
 libsql-sys = { version = "0.8", path = "../libsql-sys", default-features = false, features = ["wal", "rusqlite", "api"] }
-libsql-wal = { version = "0.1.0-alpha.1", path = "../libsql-wal/", optional = true }
 rusqlite = { workspace = true }
 parking_lot = "0.12.1"
 bytes = { version = "1.5.0", features = ["serde"] } 
@@ -38,4 +37,3 @@ tonic-build = "0.11"
 
 [features]
 encryption = ["libsql-sys/encryption"]
-libsql_wal = ["dep:libsql-wal"]

libsql-replication/Cargo.toml

@@ -1,8 +1,6 @@
 use std::future::Future;
 
 use super::rpc::replication::Frame as RpcFrame;
-#[cfg(feature = "libsql_wal")]
-pub use libsql_injector::LibsqlInjector;
 pub use sqlite_injector::SqliteInjector;
 
 use crate::frame::FrameNo;
@@ -11,8 +9,6 @@ pub use error::Error;
 use error::Result;
 
 mod error;
-#[cfg(feature = "libsql_wal")]
-mod libsql_injector;
 mod sqlite_injector;
 
 pub trait Injector {

libsql-replication/src/injector/libsql_injector.rs

@@ -37,8 +37,7 @@ hyper-tungstenite = "0.11"
 itertools = "0.10.5"
 jsonwebtoken = "9"
 libsql = { path = "../libsql/", optional = true }
-libsql_replication = { path = "../libsql-replication", features = ["libsql_wal"] }
-libsql-wal = { path = "../libsql-wal/" }
+libsql_replication = { path = "../libsql-replication" }
 libsql-storage = { path = "../libsql-storage", optional = true }
 metrics = "0.21.1"
 metrics-util = "0.15"

libsql-replication/src/injector/mod.rs

@@ -8,36 +8,29 @@ use crossbeam::sync::{Parker, Unparker};
 use hashbrown::HashMap;
 #[cfg(feature = "durable-wal")]
 use libsql_storage::{DurableWal, DurableWalManager};
-#[cfg(not(feature = "durable-wal"))]
-use libsql_sys::wal::either::Either;
 #[cfg(feature = "durable-wal")]
 use libsql_sys::wal::either::Either3;
 use libsql_sys::wal::wrapper::{WrapWal, WrappedWal};
 use libsql_sys::wal::{CheckpointMode, Sqlite3Wal, Sqlite3WalManager, Wal};
-use libsql_wal::io::StdIO;
-use libsql_wal::wal::{LibsqlWal, LibsqlWalManager};
 use metrics::atomics::AtomicU64;
 use parking_lot::{Mutex, MutexGuard};
 use rusqlite::ErrorCode;
 
-use crate::SqldStorage;
-
 use super::connection_core::CoreConnection;
 use super::TXN_TIMEOUT;
 
 pub type ConnId = u64;
 #[cfg(feature = "durable-wal")]
-
 pub type InnerWalManager =
     Either3<Sqlite3WalManager, LibsqlWalManager<StdIO, SqldStorage>, DurableWalManager>;
+#[cfg(not(feature = "durable-wal"))]
+pub type InnerWalManager = Sqlite3WalManager;
+
 #[cfg(feature = "durable-wal")]
 pub type InnerWal = Either3<Sqlite3Wal, LibsqlWal<StdIO, SqldStorage>, DurableWal>;
 
 #[cfg(not(feature = "durable-wal"))]
-pub type InnerWalManager = Either<Sqlite3WalManager, LibsqlWalManager<StdIO, SqldStorage>>;
-
-#[cfg(not(feature = "durable-wal"))]
-pub type InnerWal = Either<Sqlite3Wal, LibsqlWal<StdIO, SqldStorage>>;
+pub type InnerWal = Sqlite3Wal;
 pub type ManagedConnectionWal = WrappedWal<ManagedConnectionWalWrapper, InnerWal>;
 
 #[derive(Copy, Clone, Debug)]