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-rw-r--r--src/table/data.rs118
1 files changed, 81 insertions, 37 deletions
diff --git a/src/table/data.rs b/src/table/data.rs
index 3212e82b..5c792f1f 100644
--- a/src/table/data.rs
+++ b/src/table/data.rs
@@ -10,6 +10,7 @@ use garage_db::counted_tree_hack::CountedTree;
use garage_util::data::*;
use garage_util::error::*;
+use garage_util::migrate::Migrate;
use garage_rpc::system::System;
@@ -31,16 +32,16 @@ pub struct TableData<F: TableSchema, R: TableReplication> {
pub(crate) merkle_tree: db::Tree,
pub(crate) merkle_todo: db::Tree,
pub(crate) merkle_todo_notify: Notify,
+
+ pub(crate) insert_queue: db::Tree,
+ pub(crate) insert_queue_notify: Notify,
+
pub(crate) gc_todo: CountedTree,
pub(crate) metrics: TableMetrics,
}
-impl<F, R> TableData<F, R>
-where
- F: TableSchema,
- R: TableReplication,
-{
+impl<F: TableSchema, R: TableReplication> TableData<F, R> {
pub fn new(system: Arc<System>, instance: F, replication: R, db: &db::Db) -> Arc<Self> {
let store = db
.open_tree(&format!("{}:table", F::TABLE_NAME))
@@ -53,12 +54,22 @@ where
.open_tree(&format!("{}:merkle_todo", F::TABLE_NAME))
.expect("Unable to open DB Merkle TODO tree");
+ let insert_queue = db
+ .open_tree(&format!("{}:insert_queue", F::TABLE_NAME))
+ .expect("Unable to open insert queue DB tree");
+
let gc_todo = db
.open_tree(&format!("{}:gc_todo_v2", F::TABLE_NAME))
- .expect("Unable to open DB tree");
+ .expect("Unable to open GC DB tree");
let gc_todo = CountedTree::new(gc_todo).expect("Cannot count gc_todo_v2");
- let metrics = TableMetrics::new(F::TABLE_NAME, merkle_todo.clone(), gc_todo.clone());
+ let metrics = TableMetrics::new(
+ F::TABLE_NAME,
+ store.clone(),
+ merkle_tree.clone(),
+ merkle_todo.clone(),
+ gc_todo.clone(),
+ );
Arc::new(Self {
system,
@@ -68,6 +79,8 @@ where
merkle_tree,
merkle_todo,
merkle_todo_notify: Notify::new(),
+ insert_queue,
+ insert_queue_notify: Notify::new(),
gc_todo,
metrics,
})
@@ -167,9 +180,8 @@ where
pub(crate) fn update_entry(&self, update_bytes: &[u8]) -> Result<(), Error> {
let update = self.decode_entry(update_bytes)?;
- let tree_key = self.tree_key(update.partition_key(), update.sort_key());
- self.update_entry_with(&tree_key[..], |ent| match ent {
+ self.update_entry_with(update.partition_key(), update.sort_key(), |ent| match ent {
Some(mut ent) => {
ent.merge(&update);
ent
@@ -181,11 +193,14 @@ where
pub fn update_entry_with(
&self,
- tree_key: &[u8],
+ partition_key: &F::P,
+ sort_key: &F::S,
f: impl Fn(Option<F::E>) -> F::E,
) -> Result<Option<F::E>, Error> {
+ let tree_key = self.tree_key(partition_key, sort_key);
+
let changed = self.store.db().transaction(|mut tx| {
- let (old_entry, old_bytes, new_entry) = match tx.get(&self.store, tree_key)? {
+ let (old_entry, old_bytes, new_entry) = match tx.get(&self.store, &tree_key)? {
Some(old_bytes) => {
let old_entry = self.decode_entry(&old_bytes).map_err(db::TxError::Abort)?;
let new_entry = f(Some(old_entry.clone()));
@@ -194,23 +209,24 @@ where
None => (None, None, f(None)),
};
- // Scenario 1: the value changed, so of course there is a change
- let value_changed = Some(&new_entry) != old_entry.as_ref();
-
+ // Changed can be true in two scenarios
+ // Scenario 1: the actual represented value changed,
+ // so of course the messagepack encoding changed as well
// Scenario 2: the value didn't change but due to a migration in the
- // data format, the messagepack encoding changed. In this case
- // we have to write the migrated value in the table and update
- // the associated Merkle tree entry.
- let new_bytes = rmp_to_vec_all_named(&new_entry)
+ // data format, the messagepack encoding changed. In this case,
+ // we also have to write the migrated value in the table and update
+ // the associated Merkle tree entry.
+ let new_bytes = new_entry
+ .encode()
.map_err(Error::RmpEncode)
.map_err(db::TxError::Abort)?;
- let encoding_changed = Some(&new_bytes[..]) != old_bytes.as_ref().map(|x| &x[..]);
+ let changed = Some(&new_bytes[..]) != old_bytes.as_deref();
drop(old_bytes);
- if value_changed || encoding_changed {
- let new_bytes_hash = blake2sum(&new_bytes[..]);
- tx.insert(&self.merkle_todo, tree_key, new_bytes_hash.as_slice())?;
- tx.insert(&self.store, tree_key, new_bytes)?;
+ if changed {
+ let new_bytes_hash = blake2sum(&new_bytes);
+ tx.insert(&self.merkle_todo, &tree_key, new_bytes_hash.as_slice())?;
+ tx.insert(&self.store, &tree_key, new_bytes)?;
self.instance
.updated(&mut tx, old_entry.as_ref(), Some(&new_entry))?;
@@ -236,7 +252,7 @@ where
let pk_hash = Hash::try_from(&tree_key[..32]).unwrap();
let nodes = self.replication.write_nodes(&pk_hash);
if nodes.first() == Some(&self.system.id) {
- GcTodoEntry::new(tree_key.to_vec(), new_bytes_hash).save(&self.gc_todo)?;
+ GcTodoEntry::new(tree_key, new_bytes_hash).save(&self.gc_todo)?;
}
}
@@ -252,10 +268,11 @@ where
.db()
.transaction(|mut tx| match tx.get(&self.store, k)? {
Some(cur_v) if cur_v == v => {
+ let old_entry = self.decode_entry(v).map_err(db::TxError::Abort)?;
+
tx.remove(&self.store, k)?;
tx.insert(&self.merkle_todo, k, vec![])?;
- let old_entry = self.decode_entry(v).map_err(db::TxError::Abort)?;
self.instance.updated(&mut tx, Some(&old_entry), None)?;
Ok(true)
}
@@ -279,10 +296,11 @@ where
.db()
.transaction(|mut tx| match tx.get(&self.store, k)? {
Some(cur_v) if blake2sum(&cur_v[..]) == vhash => {
+ let old_entry = self.decode_entry(&cur_v[..]).map_err(db::TxError::Abort)?;
+
tx.remove(&self.store, k)?;
tx.insert(&self.merkle_todo, k, vec![])?;
- let old_entry = self.decode_entry(&cur_v[..]).map_err(db::TxError::Abort)?;
self.instance.updated(&mut tx, Some(&old_entry), None)?;
Ok(true)
}
@@ -296,6 +314,32 @@ where
Ok(removed)
}
+ // ---- Insert queue functions ----
+
+ pub(crate) fn queue_insert(
+ &self,
+ tx: &mut db::Transaction,
+ ins: &F::E,
+ ) -> db::TxResult<(), Error> {
+ let tree_key = self.tree_key(ins.partition_key(), ins.sort_key());
+
+ let new_entry = match tx.get(&self.insert_queue, &tree_key)? {
+ Some(old_v) => {
+ let mut entry = self.decode_entry(&old_v).map_err(db::TxError::Abort)?;
+ entry.merge(ins);
+ entry.encode()
+ }
+ None => ins.encode(),
+ };
+ let new_entry = new_entry
+ .map_err(Error::RmpEncode)
+ .map_err(db::TxError::Abort)?;
+ tx.insert(&self.insert_queue, &tree_key, new_entry)?;
+ self.insert_queue_notify.notify_one();
+
+ Ok(())
+ }
+
// ---- Utility functions ----
pub fn tree_key(&self, p: &F::P, s: &F::S) -> Vec<u8> {
@@ -305,18 +349,18 @@ where
}
pub fn decode_entry(&self, bytes: &[u8]) -> Result<F::E, Error> {
- match rmp_serde::decode::from_read_ref::<_, F::E>(bytes) {
- Ok(x) => Ok(x),
- Err(e) => match F::try_migrate(bytes) {
- Some(x) => Ok(x),
- None => {
- warn!("Unable to decode entry of {}: {}", F::TABLE_NAME, e);
- for line in hexdump::hexdump_iter(bytes) {
- debug!("{}", line);
- }
- Err(e.into())
+ match F::E::decode(bytes) {
+ Some(x) => Ok(x),
+ None => {
+ error!("Unable to decode entry of {}", F::TABLE_NAME);
+ for line in hexdump::hexdump_iter(bytes) {
+ debug!("{}", line);
}
- },
+ Err(Error::Message(format!(
+ "Unable to decode entry of {}",
+ F::TABLE_NAME
+ )))
+ }
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-20 10:48:02 +0000