Merge pull request 'NLnet task 3' (#667) from nlnet-task3 into next-0.10

Reviewed-on: https://git.deuxfleurs.fr/Deuxfleurs/garage/pulls/667

1 files changed, 24 insertions, 5 deletions

diff --git a/src/table/replication/parameters.rs b/src/table/replication/parameters.rs
index f00815a2..78470f35 100644
--- a/src/table/replication/parameters.rs
+++ b/src/table/replication/parameters.rs
@@ -1,25 +1,44 @@
-use garage_rpc::ring::*;
+use garage_rpc::layout::*;
 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>>> + AsMut<Vec<Vec<Uuid>>> + Send + Sync + 'static;
+
 	// See examples in table_sharded.rs and table_fullcopy.rs
 	// To understand various replication methods
 
+	/// The entire list of all nodes that store a partition
+	fn storage_nodes(&self, hash: &Hash) -> Vec<Uuid>;
+
 	/// Which nodes to send read requests to
 	fn read_nodes(&self, hash: &Hash) -> Vec<Uuid>;
 	/// Responses needed to consider a read succesfull
 	fn read_quorum(&self) -> usize;
 
 	/// Which nodes to send writes to
-	fn write_nodes(&self, hash: &Hash) -> Vec<Uuid>;
-	/// Responses needed to consider a write succesfull
+	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;
 
 	// Accessing partitions, for Merkle tree & sync
 	/// Get partition for data with given hash
 	fn partition_of(&self, hash: &Hash) -> Partition;
-	/// List of existing partitions
-	fn partitions(&self) -> Vec<(Partition, Hash)>;
+	/// List of partitions and nodes to sync with in current layout
+	fn sync_partitions(&self) -> SyncPartitions;
+}
+
+#[derive(Debug)]
+pub struct SyncPartitions {
+	pub layout_version: u64,
+	pub partitions: Vec<SyncPartition>,
+}
+
+#[derive(Debug)]
+pub struct SyncPartition {
+	pub partition: Partition,
+	pub first_hash: Hash,
+	pub last_hash: Hash,
+	pub storage_sets: Vec<Vec<Uuid>>,
 }