Experimental FUSE mode (#27)

.github/workflows/ci.yml

@@ -24,10 +24,13 @@ jobs:
           set -e
           curl -L https://github.com/apple/foundationdb/releases/download/7.1.17/foundationdb-clients_7.1.17-1_amd64.deb --output fdb-client.deb
           sudo dpkg -i fdb-client.deb
+          sudo apt update && sudo apt install -y libfuse3-dev
       - name: Build (mvstore)
         run: cargo build --release -p mvstore
       - name: Build (mvsqlite)
         run: cargo build --release -p mvsqlite
+      - name: Build (mvsqlite-fuse)
+        run: cargo build --release -p mvsqlite-fuse
       - name: Build (shared libraries)
         run: make -C ./mvsqlite-preload build-preload && make -C ./mvsqlite-preload build-lib
       - name: Build (mvstore-stress)
@@ -39,6 +42,7 @@ jobs:
           cd build
           cp ../target/release/mvstore ./
           cp ../target/release/mvstore-stress ./
+          cp ../target/release/mvsqlite-fuse ./
           cp ../mvsqlite-preload/libmvsqlite_preload.so ./
           cp ../mvsqlite-preload/libmvsqlite.a ./
           find . -type f -exec sha256sum '{}' ';'
@@ -64,6 +68,7 @@ jobs:
           curl -L https://github.com/apple/foundationdb/releases/download/7.1.17/foundationdb-clients_7.1.17-1_amd64.deb --output fdb-client.deb
           sudo dpkg -i fdb-client.deb
           cargo install cargo-deb
+          sudo apt update && sudo apt install -y libfuse3-dev # stop cargo from complaining, not really needed
       - name: Build mvstore
         run: cd mvstore && cargo deb && cd .. && mkdir deb && cp ./target/debian/*.deb ./deb/
       - name: Push
@@ -350,6 +355,7 @@ jobs:
       with:
         files: |
           build/mvstore
+          build/mvsqlite-fuse
           build/libmvsqlite_preload.so
           build/libmvsqlite.a
           deb/*.deb

Cargo.toml

@@ -1,6 +1,7 @@
 [workspace]
 members = [
     "mvsqlite",
+    "mvsqlite-fuse",
     "mvstore",
     "mvstore-stress",
     "mvclient",

mvfs/src/vfs.rs

@@ -552,7 +552,7 @@ impl Connection {
         Ok(false)
     }
 
-    pub fn current_lock(&self) -> Result<LockKind, std::io::Error> {
-        Ok(self.lock)
+    pub fn current_lock(&self) -> LockKind {
+        self.lock
     }
 }

mvsqlite-fuse/Cargo.toml

@@ -0,0 +1,27 @@
+[package]
+name = "mvsqlite-fuse"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+anyhow = "1"
+thiserror = "1"
+tokio = { version = "1", features = ["full"] }
+log = "0.4"
+rand = "0.8.5"
+mvclient = { path = "../mvclient" }
+tracing = "0.1"
+tracing-subscriber = { version = "0.3.15", features = ["env-filter", "fmt", "tracing-log", "json"] }
+libc = "0.2"
+backtrace = "0.3.66"
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+lazy_static = "1.4.0"
+reqwest = { version = "0.11.11", default-features = false, features = ["rustls-tls"] }
+mvfs = { path = "../mvfs" }
+fuser = "0.11.0"
+structopt = "0.3.26"
+indexmap = "1.9.1"
+slab = "0.4.7"