Don't do version & block_ref updates in background on deletion

TODO

@@ -6,6 +6,11 @@ Finish the thing that sends blocks to other nodes if needed before deleting them
 How are we going to test that our replication method works correctly?
 We will have to introduce lots of dummy data and then add/remove nodes many times.
 
+Repair:
+- re-propagate object table version deletions to version table
+- re-propagate version table deletion to block ref table
+- re-propagate block ref table to rc
+
 
 To do list
 ----------

src/block_ref_table.rs

@@ -4,6 +4,7 @@ use std::sync::Arc;
 
 use crate::background::*;
 use crate::data::*;
+use crate::error::Error;
 use crate::table::*;
 
 use crate::block::*;
@@ -47,20 +48,17 @@ impl TableSchema for BlockRefTable {
 	type E = BlockRef;
 	type Filter = ();
 
-	async fn updated(&self, old: Option<Self::E>, new: Option<Self::E>) {
+	async fn updated(&self, old: Option<Self::E>, new: Option<Self::E>) -> Result<(), Error> {
 		let block = &old.as_ref().or(new.as_ref()).unwrap().block;
 		let was_before = old.as_ref().map(|x| !x.deleted).unwrap_or(false);
 		let is_after = new.as_ref().map(|x| !x.deleted).unwrap_or(false);
 		if is_after && !was_before {
-			if let Err(e) = self.block_manager.block_incref(block) {
+			self.block_manager.block_incref(block)?;
-				eprintln!("Failed to incref block {:?}: {}", block, e);
-			}
 		}
 		if was_before && !is_after {
-			if let Err(e) = self.block_manager.block_decref(block) {
+			self.block_manager.block_decref(block)?;
-				eprintln!("Failed to decref block {:?}: {}", block, e);
-			}
 		}
+		Ok(())
 	}
 
 	fn matches_filter(entry: &Self::E, _filter: &Self::Filter) -> bool {

src/bucket_table.rs

@@ -1,6 +1,7 @@
 use async_trait::async_trait;
 use serde::{Deserialize, Serialize};
 
+use crate::error::Error;
 use crate::table::*;
 
 #[derive(PartialEq, Clone, Debug, Serialize, Deserialize)]
@@ -71,7 +72,9 @@ impl TableSchema for BucketTable {
 	type E = Bucket;
 	type Filter = ();
 
-	async fn updated(&self, _old: Option<Self::E>, _new: Option<Self::E>) {}
+	async fn updated(&self, _old: Option<Self::E>, _new: Option<Self::E>) -> Result<(), Error> {
+		Ok(())
+	}
 
 	fn matches_filter(entry: &Self::E, _filter: &Self::Filter) -> bool {
 		!entry.deleted

src/object_table.rs

@@ -4,6 +4,7 @@ use std::sync::Arc;
 
 use crate::background::BackgroundRunner;
 use crate::data::*;
+use crate::error::Error;
 use crate::table::*;
 use crate::table_sharded::*;
 
@@ -101,11 +102,10 @@ impl TableSchema for ObjectTable {
 	type E = Object;
 	type Filter = ();
 
-	async fn updated(&self, old: Option<Self::E>, new: Option<Self::E>) {
+	async fn updated(&self, old: Option<Self::E>, new: Option<Self::E>) -> Result<(), Error> {
 		let version_table = self.version_table.clone();
 		if let (Some(old_v), Some(new_v)) = (old, new) {
 			// Propagate deletion of old versions
-			self.background.spawn(async move {
 			for v in old_v.versions.iter() {
 				if new_v
 					.versions
@@ -122,9 +122,8 @@ impl TableSchema for ObjectTable {
 					version_table.insert(&deleted_version).await?;
 				}
 			}
-				Ok(())
-			});
 		}
+		Ok(())
 	}
 
 	fn matches_filter(_entry: &Self::E, _filter: &Self::Filter) -> bool {

src/table.rs

@@ -105,7 +105,7 @@ pub trait TableSchema: Send + Sync {
 	type E: Entry<Self::P, Self::S>;
 	type Filter: Clone + Serialize + for<'de> Deserialize<'de> + Send + Sync;
 
-	async fn updated(&self, old: Option<Self::E>, new: Option<Self::E>);
+	async fn updated(&self, old: Option<Self::E>, new: Option<Self::E>) -> Result<(), Error>;
 	fn matches_filter(_entry: &Self::E, _filter: &Self::Filter) -> bool {
 		true
 	}
@@ -469,7 +469,7 @@ where
 					epidemic_propagate.push(new_entry.clone());
 				}
 
-				self.instance.updated(old_entry, Some(new_entry)).await;
+				self.instance.updated(old_entry, Some(new_entry)).await?;
 				self.system
 					.background
 					.spawn(syncer.clone().invalidate(tree_key));
@@ -497,7 +497,7 @@ where
 			}
 			if let Some(old_val) = self.store.remove(&key)? {
 				let old_entry = rmp_serde::decode::from_read_ref::<_, F::E>(&old_val)?;
-				self.instance.updated(Some(old_entry), None).await;
+				self.instance.updated(Some(old_entry), None).await?;
 				self.system
 					.background
 					.spawn(syncer.clone().invalidate(key.to_vec()));

src/version_table.rs

@@ -4,6 +4,7 @@ use std::sync::Arc;
 
 use crate::background::BackgroundRunner;
 use crate::data::*;
+use crate::error::Error;
 use crate::table::*;
 use crate::table_sharded::*;
 
@@ -67,11 +68,10 @@ impl TableSchema for VersionTable {
 	type E = Version;
 	type Filter = ();
 
-	async fn updated(&self, old: Option<Self::E>, new: Option<Self::E>) {
+	async fn updated(&self, old: Option<Self::E>, new: Option<Self::E>) -> Result<(), Error> {
 		let block_ref_table = self.block_ref_table.clone();
 		if let (Some(old_v), Some(new_v)) = (old, new) {
 			// Propagate deletion of version blocks
-			self.background.spawn(async move {
 			if new_v.deleted && !old_v.deleted {
 				let deleted_block_refs = old_v
 					.blocks
@@ -84,9 +84,8 @@ impl TableSchema for VersionTable {
 					.collect::<Vec<_>>();
 				block_ref_table.insert_many(&deleted_block_refs[..]).await?;
 			}
-				Ok(())
-			});
 		}
+		Ok(())
 	}
 
 	fn matches_filter(entry: &Self::E, _filter: &Self::Filter) -> bool {

test_delete.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+for FILE in $(find target/debug/deps); do 
+	curl -v localhost:3900/$FILE -X DELETE -H 'Host: garage'
+done
+