New multipart upload table layout

4 files changed, 429 insertions, 31 deletions

diff --git a/src/model/s3/mod.rs b/src/model/s3/mod.rs
index 4e94337d..36d67093 100644
--- a/src/model/s3/mod.rs
+++ b/src/model/s3/mod.rs
@@ -1,3 +1,4 @@
 pub mod block_ref_table;
+pub mod mpu_table;
 pub mod object_table;
 pub mod version_table;
diff --git a/src/model/s3/mpu_table.rs b/src/model/s3/mpu_table.rs
new file mode 100644
index 00000000..dc5b5a82
--- /dev/null
+++ b/src/model/s3/mpu_table.rs
@@ -0,0 +1,231 @@
+use std::sync::Arc;
+
+use garage_db as db;
+
+use garage_util::data::*;
+
+use garage_table::crdt::*;
+use garage_table::replication::TableShardedReplication;
+use garage_table::*;
+
+use crate::index_counter::*;
+use crate::s3::version_table::*;
+
+pub const UPLOADS: &str = "uploads";
+pub const PARTS: &str = "parts";
+pub const BYTES: &str = "bytes";
+
+mod v09 {
+	use garage_util::crdt;
+	use garage_util::data::Uuid;
+	use serde::{Deserialize, Serialize};
+
+	pub use crate::s3::version_table::v09::VersionBlock;
+
+	/// A part of a multipart upload
+	#[derive(PartialEq, Eq, Clone, Debug, Serialize, Deserialize)]
+	pub struct MultipartUpload {
+		/// Partition key = Upload id = UUID of the object version
+		pub upload_id: Uuid,
+
+		/// Is this multipart upload deleted
+		pub deleted: crdt::Bool,
+		/// List of uploaded parts, key = (part number, timestamp)
+		/// In case of retries, all versions for each part are kept
+		/// Everything is cleaned up only once the multipart upload is completed or
+		/// aborted
+		pub parts: crdt::Map<MpuPartKey, MpuPart>,
+
+		// Back link to bucket+key so that we can figure if
+		// this was deleted later on
+		/// Bucket in which the related object is stored
+		pub bucket_id: Uuid,
+		/// Key in which the related object is stored
+		pub key: String,
+	}
+
+	#[derive(PartialEq, Eq, Clone, Copy, Debug, Serialize, Deserialize)]
+	pub struct MpuPartKey {
+		/// Number of the part
+		pub part_number: u64,
+		/// Timestamp of part upload
+		pub timestamp: u64,
+	}
+
+	/// The version of an uploaded part
+	#[derive(PartialEq, Eq, Clone, Debug, Serialize, Deserialize)]
+	pub struct MpuPart {
+		/// Links to a Version in VersionTable
+		pub version: Uuid,
+		/// ETag of the content of this part (known only once done uploading)
+		pub etag: Option<String>,
+		/// Size of this part (known only once done uploading)
+		pub size: Option<u64>,
+	}
+
+	impl garage_util::migrate::InitialFormat for MultipartUpload {
+		const VERSION_MARKER: &'static [u8] = b"G09s3mpu";
+	}
+}
+
+pub use v09::*;
+
+impl Ord for MpuPartKey {
+	fn cmp(&self, other: &Self) -> std::cmp::Ordering {
+		self.part_number
+			.cmp(&other.part_number)
+			.then(self.timestamp.cmp(&other.timestamp))
+	}
+}
+
+impl PartialOrd for MpuPartKey {
+	fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
+		Some(self.cmp(other))
+	}
+}
+
+impl MultipartUpload {
+	pub fn new(upload_id: Uuid, bucket_id: Uuid, key: String, deleted: bool) -> Self {
+		Self {
+			upload_id,
+			deleted: crdt::Bool::new(deleted),
+			parts: crdt::Map::new(),
+			bucket_id,
+			key,
+		}
+	}
+}
+
+impl Entry<Uuid, EmptyKey> for MultipartUpload {
+	fn partition_key(&self) -> &Uuid {
+		&self.upload_id
+	}
+	fn sort_key(&self) -> &EmptyKey {
+		&EmptyKey
+	}
+	fn is_tombstone(&self) -> bool {
+		self.deleted.get()
+	}
+}
+
+impl Crdt for MultipartUpload {
+	fn merge(&mut self, other: &Self) {
+		self.deleted.merge(&other.deleted);
+
+		if self.deleted.get() {
+			self.parts.clear();
+		} else {
+			self.parts.merge(&other.parts);
+		}
+	}
+}
+
+impl Crdt for MpuPart {
+	fn merge(&mut self, other: &Self) {
+		self.etag = match (self.etag.take(), &other.etag) {
+			(None, Some(_)) => other.etag.clone(),
+			(Some(x), Some(y)) if x < *y => other.etag.clone(),
+			(x, _) => x,
+		};
+		self.size = match (self.size, other.size) {
+			(None, Some(_)) => other.size,
+			(Some(x), Some(y)) if x < y => other.size,
+			(x, _) => x,
+		};
+	}
+}
+
+pub struct MultipartUploadTable {
+	pub version_table: Arc<Table<VersionTable, TableShardedReplication>>,
+	pub mpu_counter_table: Arc<IndexCounter<MultipartUpload>>,
+}
+
+impl TableSchema for MultipartUploadTable {
+	const TABLE_NAME: &'static str = "multipart_upload";
+
+	type P = Uuid;
+	type S = EmptyKey;
+	type E = MultipartUpload;
+	type Filter = DeletedFilter;
+
+	fn updated(
+		&self,
+		tx: &mut db::Transaction,
+		old: Option<&Self::E>,
+		new: Option<&Self::E>,
+	) -> db::TxOpResult<()> {
+		// 1. Count
+		let counter_res = self.mpu_counter_table.count(tx, old, new);
+		if let Err(e) = db::unabort(counter_res)? {
+			error!(
+				"Unable to update multipart object part counter: {}. Index values will be wrong!",
+				e
+			);
+		}
+
+		// 2. Propagate deletions to version table
+		if let (Some(old_mpu), Some(new_mpu)) = (old, new) {
+			if new_mpu.deleted.get() && !old_mpu.deleted.get() {
+				let deleted_versions = old_mpu.parts.items().iter().map(|(_k, p)| {
+					Version::new(
+						p.version,
+						VersionBacklink::MultipartUpload {
+							upload_id: old_mpu.upload_id,
+						},
+						true,
+					)
+				});
+				for version in deleted_versions {
+					let res = self.version_table.queue_insert(tx, &version);
+					if let Err(e) = db::unabort(res)? {
+						error!("Unable to enqueue version deletion propagation: {}. A repair will be needed.", e);
+					}
+				}
+			}
+		}
+
+		Ok(())
+	}
+
+	fn matches_filter(entry: &Self::E, filter: &Self::Filter) -> bool {
+		filter.apply(entry.is_tombstone())
+	}
+}
+
+impl CountedItem for MultipartUpload {
+	const COUNTER_TABLE_NAME: &'static str = "bucket_mpu_part_counter";
+
+	// Partition key = bucket id
+	type CP = Uuid;
+	// Sort key = nothing
+	type CS = EmptyKey;
+
+	fn counter_partition_key(&self) -> &Uuid {
+		&self.bucket_id
+	}
+	fn counter_sort_key(&self) -> &EmptyKey {
+		&EmptyKey
+	}
+
+	fn counts(&self) -> Vec<(&'static str, i64)> {
+		let uploads = if self.deleted.get() { 0 } else { 1 };
+		let mut parts = self
+			.parts
+			.items()
+			.iter()
+			.map(|(k, _)| k.part_number)
+			.collect::<Vec<_>>();
+		parts.dedup();
+		let bytes = self
+			.parts
+			.items()
+			.iter()
+			.map(|(_, p)| p.size.unwrap_or(0))
+			.sum::<u64>();
+		vec![
+			(UPLOADS, uploads),
+			(PARTS, parts.len() as i64),
+			(BYTES, bytes as i64),
+		]
+	}
+}
diff --git a/src/model/s3/object_table.rs b/src/model/s3/object_table.rs
index 518acc95..a69069b2 100644
--- a/src/model/s3/object_table.rs
+++ b/src/model/s3/object_table.rs
@@ -10,6 +10,7 @@ use garage_table::replication::TableShardedReplication;
 use garage_table::*;
 
 use crate::index_counter::*;
+use crate::s3::mpu_table::*;
 use crate::s3::version_table::*;
 
 pub const OBJECTS: &str = "objects";
@@ -130,7 +131,86 @@ mod v08 {
 	}
 }
 
-pub use v08::*;
+mod v09 {
+	use garage_util::data::Uuid;
+	use serde::{Deserialize, Serialize};
+
+	use super::v08;
+
+	pub use v08::{ObjectVersionData, ObjectVersionHeaders, ObjectVersionMeta};
+
+	/// An object
+	#[derive(PartialEq, Eq, Clone, Debug, Serialize, Deserialize)]
+	pub struct Object {
+		/// The bucket in which the object is stored, used as partition key
+		pub bucket_id: Uuid,
+
+		/// The key at which the object is stored in its bucket, used as sorting key
+		pub key: String,
+
+		/// The list of currenty stored versions of the object
+		pub(super) versions: Vec<ObjectVersion>,
+	}
+
+	/// Informations about a version of an object
+	#[derive(PartialEq, Eq, Clone, Debug, Serialize, Deserialize)]
+	pub struct ObjectVersion {
+		/// Id of the version
+		pub uuid: Uuid,
+		/// Timestamp of when the object was created
+		pub timestamp: u64,
+		/// State of the version
+		pub state: ObjectVersionState,
+	}
+
+	/// State of an object version
+	#[derive(PartialEq, Eq, Clone, Debug, Serialize, Deserialize)]
+	pub enum ObjectVersionState {
+		/// The version is being received
+		Uploading {
+			/// Indicates whether this is a multipart upload
+			multipart: bool,
+			/// Headers to be included in the final object
+			headers: ObjectVersionHeaders,
+		},
+		/// The version is fully received
+		Complete(ObjectVersionData),
+		/// The version uploaded containded errors or the upload was explicitly aborted
+		Aborted,
+	}
+
+	impl garage_util::migrate::Migrate for Object {
+		const VERSION_MARKER: &'static [u8] = b"G09s3o";
+
+		type Previous = v08::Object;
+
+		fn migrate(old: v08::Object) -> Object {
+			let versions = old
+				.versions
+				.into_iter()
+				.map(|x| ObjectVersion {
+					uuid: x.uuid,
+					timestamp: x.timestamp,
+					state: match x.state {
+						v08::ObjectVersionState::Uploading(h) => ObjectVersionState::Uploading {
+							multipart: false,
+							headers: h,
+						},
+						v08::ObjectVersionState::Complete(d) => ObjectVersionState::Complete(d),
+						v08::ObjectVersionState::Aborted => ObjectVersionState::Aborted,
+					},
+				})
+				.collect();
+			Object {
+				bucket_id: old.bucket_id,
+				key: old.key,
+				versions,
+			}
+		}
+	}
+}
+
+pub use v09::*;
 
 impl Object {
 	/// Initialize an Object struct from parts
@@ -180,11 +260,11 @@ impl Crdt for ObjectVersionState {
 				Complete(a) => {
 					a.merge(b);
 				}
-				Uploading(_) => {
+				Uploading { .. } => {
 					*self = Complete(b.clone());
 				}
 			},
-			Uploading(_) => {}
+			Uploading { .. } => {}
 		}
 	}
 }
@@ -199,8 +279,17 @@ impl ObjectVersion {
 	}
 
 	/// Is the object version currently being uploaded
-	pub fn is_uploading(&self) -> bool {
-		matches!(self.state, ObjectVersionState::Uploading(_))
+	///
+	/// matches only multipart uploads if check_multipart is Some(true)
+	/// matches only non-multipart uploads if check_multipart is Some(false)
+	/// matches both if check_multipart is None
+	pub fn is_uploading(&self, check_multipart: Option<bool>) -> bool {
+		match &self.state {
+			ObjectVersionState::Uploading { multipart, .. } => {
+				check_multipart.map(|x| x == *multipart).unwrap_or(true)
+			}
+			_ => false,
+		}
 	}
 
 	/// Is the object version completely received
@@ -267,13 +356,20 @@ impl Crdt for Object {
 
 pub struct ObjectTable {
 	pub version_table: Arc<Table<VersionTable, TableShardedReplication>>,
+	pub mpu_table: Arc<Table<MultipartUploadTable, TableShardedReplication>>,
 	pub object_counter_table: Arc<IndexCounter<Object>>,
 }
 
 #[derive(Clone, Copy, Debug, Serialize, Deserialize)]
 pub enum ObjectFilter {
+	/// Is the object version available (received and not a tombstone)
 	IsData,
-	IsUploading,
+	/// Is the object version currently being uploaded
+	///
+	/// matches only multipart uploads if check_multipart is Some(true)
+	/// matches only non-multipart uploads if check_multipart is Some(false)
+	/// matches both if check_multipart is None
+	IsUploading { check_multipart: Option<bool> },
 }
 
 impl TableSchema for ObjectTable {
@@ -314,8 +410,29 @@ impl TableSchema for ObjectTable {
 					}
 				};
 				if newly_deleted {
-					let deleted_version =
-						Version::new(v.uuid, old_v.bucket_id, old_v.key.clone(), true);
+					if let ObjectVersionState::Uploading {
+						multipart: true, ..
+					} = &v.state
+					{
+						let deleted_mpu =
+							MultipartUpload::new(v.uuid, old_v.bucket_id, old_v.key.clone(), true);
+						let res = self.mpu_table.queue_insert(tx, &deleted_mpu);
+						if let Err(e) = db::unabort(res)? {
+							error!(
+								"Unable to enqueue multipart upload deletion propagation: {}. A repair will be needed.",
+								e
+							);
+						}
+					}
+
+					let deleted_version = Version::new(
+						v.uuid,
+						VersionBacklink::Object {
+							bucket_id: old_v.bucket_id,
+							key: old_v.key.clone(),
+						},
+						true,
+					);
 					let res = self.version_table.queue_insert(tx, &deleted_version);
 					if let Err(e) = db::unabort(res)? {
 						error!(
@@ -333,7 +450,10 @@ impl TableSchema for ObjectTable {
 	fn matches_filter(entry: &Self::E, filter: &Self::Filter) -> bool {
 		match filter {
 			ObjectFilter::IsData => entry.versions.iter().any(|v| v.is_data()),
-			ObjectFilter::IsUploading => entry.versions.iter().any(|v| v.is_uploading()),
+			ObjectFilter::IsUploading { check_multipart } => entry
+				.versions
+				.iter()
+				.any(|v| v.is_uploading(*check_multipart)),
 		}
 	}
 }
@@ -360,10 +480,7 @@ impl CountedItem for Object {
 		} else {
 			0
 		};
-		let n_unfinished_uploads = versions
-			.iter()
-			.filter(|v| matches!(v.state, ObjectVersionState::Uploading(_)))
-			.count();
+		let n_unfinished_uploads = versions.iter().filter(|v| v.is_uploading(None)).count();
 		let n_bytes = versions
 			.iter()
 			.map(|v| match &v.state {
diff --git a/src/model/s3/version_table.rs b/src/model/s3/version_table.rs
index 6edc83f4..6cf1cc75 100644
--- a/src/model/s3/version_table.rs
+++ b/src/model/s3/version_table.rs
@@ -66,6 +66,8 @@ mod v08 {
 
 	use super::v05;
 
+	pub use v05::{VersionBlock, VersionBlockKey};
+
 	/// A version of an object
 	#[derive(PartialEq, Eq, Clone, Debug, Serialize, Deserialize)]
 	pub struct Version {
@@ -90,8 +92,6 @@ mod v08 {
 		pub key: String,
 	}
 
-	pub use v05::{VersionBlock, VersionBlockKey};
-
 	impl garage_util::migrate::Migrate for Version {
 		type Previous = v05::Version;
 
@@ -110,32 +110,83 @@ mod v08 {
 	}
 }
 
-pub use v08::*;
+pub(crate) mod v09 {
+	use garage_util::crdt;
+	use garage_util::data::Uuid;
+	use serde::{Deserialize, Serialize};
+
+	use super::v08;
+
+	pub use v08::{VersionBlock, VersionBlockKey};
+
+	/// A version of an object
+	#[derive(PartialEq, Eq, Clone, Debug, Serialize, Deserialize)]
+	pub struct Version {
+		/// UUID of the version, used as partition key
+		pub uuid: Uuid,
+
+		// Actual data: the blocks for this version
+		// In the case of a multipart upload, also store the etags
+		// of individual parts and check them when doing CompleteMultipartUpload
+		/// Is this version deleted
+		pub deleted: crdt::Bool,
+		/// list of blocks of data composing the version
+		pub blocks: crdt::Map<VersionBlockKey, VersionBlock>,
+
+		// Back link to bucket+key so that we can figure if
+		// this was deleted later on
+		pub backlink: VersionBacklink,
+	}
+
+	#[derive(PartialEq, Eq, Clone, Debug, Serialize, Deserialize)]
+	pub enum VersionBacklink {
+		Object {
+			/// Bucket in which the related object is stored
+			bucket_id: Uuid,
+			/// Key in which the related object is stored
+			key: String,
+		},
+		MultipartUpload {
+			upload_id: Uuid,
+		},
+	}
+
+	impl garage_util::migrate::Migrate for Version {
+		const VERSION_MARKER: &'static [u8] = b"G09s3v";
+
+		type Previous = v08::Version;
+
+		fn migrate(old: v08::Version) -> Version {
+			Version {
+				uuid: old.uuid,
+				deleted: old.deleted,
+				blocks: old.blocks,
+				backlink: VersionBacklink::Object {
+					bucket_id: old.bucket_id,
+					key: old.key,
+				},
+			}
+		}
+	}
+}
+
+pub use v09::*;
 
 impl Version {
-	pub fn new(uuid: Uuid, bucket_id: Uuid, key: String, deleted: bool) -> Self {
+	pub fn new(uuid: Uuid, backlink: VersionBacklink, deleted: bool) -> Self {
 		Self {
 			uuid,
 			deleted: deleted.into(),
 			blocks: crdt::Map::new(),
-			parts_etags: crdt::Map::new(),
-			bucket_id,
-			key,
+			backlink,
 		}
 	}
 
 	pub fn has_part_number(&self, part_number: u64) -> bool {
-		let case1 = self
-			.parts_etags
-			.items()
-			.binary_search_by(|(k, _)| k.cmp(&part_number))
-			.is_ok();
-		let case2 = self
-			.blocks
+		self.blocks
 			.items()
 			.binary_search_by(|(k, _)| k.part_number.cmp(&part_number))
-			.is_ok();
-		case1 || case2
+			.is_ok()
 	}
 }
 
@@ -175,10 +226,8 @@ impl Crdt for Version {
 
 		if self.deleted.get() {
 			self.blocks.clear();
-			self.parts_etags.clear();
 		} else {
 			self.blocks.merge(&other.blocks);
-			self.parts_etags.merge(&other.parts_etags);
 		}
 	}
 }