SQLite engine: named locks — try_lock, SqliteLockHandle, duration guards (task sqlite-engine-locks)

alkstore-sqlite/src/store.rs

@@ -199,11 +199,15 @@ impl Store for SqliteStore {
 
     fn try_lock<'a>(
         &'a self,
-        _name: &str,
-        _owner: &str,
-        _ttl: i64,
+        name: &str,
+        owner: &str,
+        ttl: i64,
     ) -> alkstore::BoxedFuture<'a, alkstore::Result<Option<Box<dyn alkstore::Lock>>>> {
-        Box::pin(async { Err(database_error("lock wiring lands with the mechanism tasks")) })
+        let name = name.to_string();
+        let owner = owner.to_string();
+        let writer = self.writer.clone();
+        let closed = self.closed.clone();
+        crate::lock::try_lock(&name, &owner, ttl, writer, closed)
     }
 
     fn schedule<'a>(
@@ -241,6 +245,8 @@ impl Store for SqliteStore {
     }
 }
 
+#[cfg(test)]
+mod lock_tests;
 #[cfg(test)]
 mod notify_tests;
 #[cfg(test)]