layou: implement ack locking

src/table/replication/fullcopy.rs

@@ -27,6 +27,8 @@ pub struct TableFullReplication {
 }
 
 impl TableReplication for TableFullReplication {
+	type WriteSets = Vec<Vec<Uuid>>;
+
 	fn storage_nodes(&self, _hash: &Hash) -> Vec<Uuid> {
 		let layout = self.system.cluster_layout();
 		layout.current().all_nodes().to_vec()
@@ -39,7 +41,7 @@ impl TableReplication for TableFullReplication {
 		1
 	}
 
-	fn write_sets(&self, hash: &Hash) -> Vec<Vec<Uuid>> {
+	fn write_sets(&self, hash: &Hash) -> Self::WriteSets {
 		vec![self.storage_nodes(hash)]
 	}
 	fn write_quorum(&self) -> usize {

src/table/replication/parameters.rs

@@ -3,6 +3,8 @@ use garage_util::data::*;
 
 /// Trait to describe how a table shall be replicated
 pub trait TableReplication: Send + Sync + 'static {
+	type WriteSets: AsRef<Vec<Vec<Uuid>>> + Send + Sync + 'static;
+
 	// See examples in table_sharded.rs and table_fullcopy.rs
 	// To understand various replication methods
 
@@ -15,7 +17,7 @@ pub trait TableReplication: Send + Sync + 'static {
 	fn read_quorum(&self) -> usize;
 
 	/// Which nodes to send writes to
-	fn write_sets(&self, hash: &Hash) -> Vec<Vec<Uuid>>;
+	fn write_sets(&self, hash: &Hash) -> Self::WriteSets;
 	/// Responses needed to consider a write succesfull in each set
 	fn write_quorum(&self) -> usize;
 	fn max_write_errors(&self) -> usize;

src/table/replication/sharded.rs

@@ -25,6 +25,8 @@ pub struct TableShardedReplication {
 }
 
 impl TableReplication for TableShardedReplication {
+	type WriteSets = WriteLock<Vec<Vec<Uuid>>>;
+
 	fn storage_nodes(&self, hash: &Hash) -> Vec<Uuid> {
 		self.system.cluster_layout().storage_nodes_of(hash)
 	}
@@ -36,8 +38,8 @@ impl TableReplication for TableShardedReplication {
 		self.read_quorum
 	}
 
-	fn write_sets(&self, hash: &Hash) -> Vec<Vec<Uuid>> {
-		self.system.cluster_layout().write_sets_of(hash)
+	fn write_sets(&self, hash: &Hash) -> Self::WriteSets {
+		self.system.layout_manager.write_sets_of(hash)
 	}
 	fn write_quorum(&self) -> usize {
 		self.write_quorum