cli: Open tracking DB in read-only mode

radicle-cli/src/commands/node.rs

@@ -153,7 +153,7 @@ pub fn run(options: Options, ctx: impl term::Context) -> anyhow::Result<()> {
             control::stop(node)?;
         }
         Operation::Tracking { mode } => {
-            let store = radicle::node::tracking::store::Config::open(
+            let store = radicle::node::tracking::store::Config::reader(
                 profile.home.node().join(TRACKING_DB_FILE),
             )?;
             tracking::run(&store, mode)?

radicle/src/node/tracking/store.rs

@@ -42,6 +42,15 @@ impl Config {
         Ok(Self { db })
     }
 
+    /// Same as [`Self::open`], but in read-only mode. This is useful to have multiple
+    /// open databases, as no locking is required.
+    pub fn reader<P: AsRef<Path>>(path: P) -> Result<Self, Error> {
+        let db = sql::Connection::open_with_flags(path, sqlite::OpenFlags::new().set_read_only())?;
+        db.execute(Self::SCHEMA)?;
+
+        Ok(Self { db })
+    }
+
     /// Create a new in-memory address book.
     pub fn memory() -> Result<Self, Error> {
         let db = sql::Connection::open(":memory:")?;