layout: refactoring and fix in layout helper

src/rpc/layout/helper.rs

@@ -10,7 +10,7 @@ use super::*;
 use crate::replication_mode::ReplicationMode;
 
 #[derive(Debug, Clone, Serialize, Deserialize, Default, PartialEq, Eq)]
-pub struct LayoutDigest {
+pub struct RpcLayoutDigest {
 	/// Cluster layout version
 	pub current_version: u64,
 	/// Number of active layout versions
@@ -21,6 +21,13 @@ pub struct LayoutDigest {
 	pub staging_hash: Hash,
 }
 
+#[derive(Debug, Clone, Copy, Eq, PartialEq)]
+pub struct SyncLayoutDigest {
+	current: u64,
+	ack_map_min: u64,
+	min_stored: u64,
+}
+
 pub struct LayoutHelper {
 	replication_mode: ReplicationMode,
 	layout: Option<LayoutHistory>,
@@ -150,20 +157,20 @@ impl LayoutHelper {
 		&self.all_nongateway_nodes
 	}
 
-	pub fn all_ack(&self) -> u64 {
+	pub fn ack_map_min(&self) -> u64 {
 		self.ack_map_min
 	}
 
-	pub fn all_sync(&self) -> u64 {
+	pub fn sync_map_min(&self) -> u64 {
 		self.sync_map_min
 	}
 
-	pub fn sync_versions(&self) -> (u64, u64, u64) {
-		(
-			self.layout().current().version,
-			self.all_ack(),
-			self.layout().min_stored(),
-		)
+	pub fn sync_digest(&self) -> SyncLayoutDigest {
+		SyncLayoutDigest {
+			current: self.layout().current().version,
+			ack_map_min: self.ack_map_min(),
+			min_stored: self.layout().min_stored(),
+		}
 	}
 
 	pub fn read_nodes_of(&self, position: &Hash) -> Vec<Uuid> {
@@ -206,8 +213,8 @@ impl LayoutHelper {
 		self.staging_hash
 	}
 
-	pub fn digest(&self) -> LayoutDigest {
-		LayoutDigest {
+	pub fn digest(&self) -> RpcLayoutDigest {
+		RpcLayoutDigest {
 			current_version: self.current().version,
 			active_versions: self.versions.len(),
 			trackers_hash: self.trackers_hash,
@@ -231,13 +238,13 @@ impl LayoutHelper {
 		// 3. Acknowledge everyone has synced up to min(self.sync_map)
 		self.sync_ack(local_node_id);
 
-		info!("ack_map: {:?}", self.update_trackers.ack_map);
-		info!("sync_map: {:?}", self.update_trackers.sync_map);
-		info!("sync_ack_map: {:?}", self.update_trackers.sync_ack_map);
+		debug!("ack_map: {:?}", self.update_trackers.ack_map);
+		debug!("sync_map: {:?}", self.update_trackers.sync_map);
+		debug!("sync_ack_map: {:?}", self.update_trackers.sync_ack_map);
 	}
 
 	fn sync_first(&mut self, local_node_id: Uuid) {
-		let first_version = self.versions.first().as_ref().unwrap().version;
+		let first_version = self.min_stored();
 		self.update(|layout| {
 			layout
 				.update_trackers
@@ -275,13 +282,13 @@ impl LayoutHelper {
 			.versions
 			.iter()
 			.map(|x| x.version)
-			.take_while(|v| {
+			.skip_while(|v| {
 				self.ack_lock
 					.get(v)
 					.map(|x| x.load(Ordering::Relaxed) == 0)
 					.unwrap_or(true)
 			})
-			.max()
-			.unwrap_or(self.min_stored())
+			.next()
+			.unwrap_or(self.current().version)
 	}
 }

src/rpc/layout/manager.rs

@@ -256,7 +256,7 @@ impl LayoutManager {
 
 	// ---- RPC HANDLERS ----
 
-	pub(crate) fn handle_advertise_status(self: &Arc<Self>, from: Uuid, remote: &LayoutDigest) {
+	pub(crate) fn handle_advertise_status(self: &Arc<Self>, from: Uuid, remote: &RpcLayoutDigest) {
 		let local = self.layout().digest();
 		if remote.current_version > local.current_version
 			|| remote.active_versions != local.active_versions

src/rpc/layout/mod.rs

@@ -17,7 +17,7 @@ pub mod manager;
 
 // ---- re-exports ----
 
-pub use helper::{LayoutDigest, LayoutHelper};
+pub use helper::{LayoutHelper, RpcLayoutDigest, SyncLayoutDigest};
 pub use manager::WriteLock;
 pub use version::*;
 

src/rpc/rpc_helper.rs

@@ -502,7 +502,7 @@ impl RpcHelper {
 			.rev()
 			.chain(layout.old_versions.iter().rev());
 		for ver in ver_iter {
-			if ver.version > layout.all_sync() {
+			if ver.version > layout.sync_map_min() {
 				continue;
 			}
 			let nodes = ver.nodes_of(position, ver.replication_factor);

src/rpc/system.rs

@@ -34,7 +34,7 @@ use crate::consul::ConsulDiscovery;
 #[cfg(feature = "kubernetes-discovery")]
 use crate::kubernetes::*;
 use crate::layout::{
-	self, manager::LayoutManager, LayoutDigest, LayoutHelper, LayoutHistory, NodeRoleV,
+	self, manager::LayoutManager, LayoutHelper, LayoutHistory, NodeRoleV, RpcLayoutDigest,
 };
 use crate::replication_mode::*;
 use crate::rpc_helper::*;
@@ -132,7 +132,7 @@ pub struct NodeStatus {
 	pub replication_factor: usize,
 
 	/// Cluster layout digest
-	pub layout_digest: LayoutDigest,
+	pub layout_digest: RpcLayoutDigest,
 
 	/// Disk usage on partition containing metadata directory (tuple: `(avail, total)`)
 	#[serde(default)]

src/table/replication/sharded.rs

@@ -54,7 +54,7 @@ impl TableReplication for TableShardedReplication {
 
 	fn sync_partitions(&self) -> SyncPartitions {
 		let layout = self.system.cluster_layout();
-		let layout_version = layout.all_ack();
+		let layout_version = layout.ack_map_min();
 
 		let mut partitions = layout
 			.current()

src/table/sync.rs

@@ -83,7 +83,7 @@ impl<F: TableSchema, R: TableReplication> TableSyncer<F, R> {
 		bg.spawn_worker(SyncWorker {
 			syncer: self.clone(),
 			layout_notify: self.system.layout_notify(),
-			layout_versions: self.system.cluster_layout().sync_versions(),
+			layout_digest: self.system.cluster_layout().sync_digest(),
 			add_full_sync_rx,
 			todo: None,
 			next_full_sync: Instant::now() + Duration::from_secs(20),
@@ -483,7 +483,7 @@ struct SyncWorker<F: TableSchema, R: TableReplication> {
 	syncer: Arc<TableSyncer<F, R>>,
 
 	layout_notify: Arc<Notify>,
-	layout_versions: (u64, u64, u64),
+	layout_digest: SyncLayoutDigest,
 
 	add_full_sync_rx: mpsc::UnboundedReceiver<()>,
 	next_full_sync: Instant,
@@ -493,15 +493,13 @@ struct SyncWorker<F: TableSchema, R: TableReplication> {
 
 impl<F: TableSchema, R: TableReplication> SyncWorker<F, R> {
 	fn check_add_full_sync(&mut self) {
-		let layout_versions = self.syncer.system.cluster_layout().sync_versions();
-		if layout_versions != self.layout_versions {
-			self.layout_versions = layout_versions;
+		let layout_digest = self.syncer.system.cluster_layout().sync_digest();
+		if layout_digest != self.layout_digest {
+			self.layout_digest = layout_digest;
 			info!(
-				"({}) Layout versions changed (max={}, ack={}, min stored={}), adding full sync to syncer todo list",
+				"({}) Layout versions changed ({:?}), adding full sync to syncer todo list",
 				F::TABLE_NAME,
-				layout_versions.0,
-				layout_versions.1,
-				layout_versions.2
+				layout_digest,
 			);
 			self.add_full_sync();
 		}