From cdb2a591e9d393d24ab5c49bb905b0589b193299 Mon Sep 17 00:00:00 2001
From: Alex Auvolat <alex@adnab.me>
Date: Tue, 3 Jan 2023 14:44:47 +0100
Subject: Refactor how things are migrated

---
 src/model/prev/v051/object_table.rs | 149 ------------------------------------
 1 file changed, 149 deletions(-)
 delete mode 100644 src/model/prev/v051/object_table.rs

(limited to 'src/model/prev/v051/object_table.rs')

diff --git a/src/model/prev/v051/object_table.rs b/src/model/prev/v051/object_table.rs
deleted file mode 100644
index e79e5787..00000000
--- a/src/model/prev/v051/object_table.rs
+++ /dev/null
@@ -1,149 +0,0 @@
-use serde::{Deserialize, Serialize};
-use std::collections::BTreeMap;
-
-use garage_util::data::*;
-
-use garage_table::crdt::*;
-
-/// 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: String,
-
-	/// 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
-	versions: Vec<ObjectVersion>,
-}
-
-impl Object {
-	/// Get a list of currently stored versions of `Object`
-	pub fn versions(&self) -> &[ObjectVersion] {
-		&self.versions[..]
-	}
-}
-
-/// 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(ObjectVersionHeaders),
-	/// The version is fully received
-	Complete(ObjectVersionData),
-	/// The version uploaded containded errors or the upload was explicitly aborted
-	Aborted,
-}
-
-impl Crdt for ObjectVersionState {
-	fn merge(&mut self, other: &Self) {
-		use ObjectVersionState::*;
-		match other {
-			Aborted => {
-				*self = Aborted;
-			}
-			Complete(b) => match self {
-				Aborted => {}
-				Complete(a) => {
-					a.merge(b);
-				}
-				Uploading(_) => {
-					*self = Complete(b.clone());
-				}
-			},
-			Uploading(_) => {}
-		}
-	}
-}
-
-/// Data stored in object version
-#[derive(PartialEq, Eq, PartialOrd, Ord, Clone, Debug, Serialize, Deserialize)]
-pub enum ObjectVersionData {
-	/// The object was deleted, this Version is a tombstone to mark it as such
-	DeleteMarker,
-	/// The object is short, it's stored inlined
-	Inline(ObjectVersionMeta, #[serde(with = "serde_bytes")] Vec<u8>),
-	/// The object is not short, Hash of first block is stored here, next segments hashes are
-	/// stored in the version table
-	FirstBlock(ObjectVersionMeta, Hash),
-}
-
-impl AutoCrdt for ObjectVersionData {
-	const WARN_IF_DIFFERENT: bool = true;
-}
-
-/// Metadata about the object version
-#[derive(PartialEq, Eq, PartialOrd, Ord, Clone, Debug, Serialize, Deserialize)]
-pub struct ObjectVersionMeta {
-	/// Headers to send to the client
-	pub headers: ObjectVersionHeaders,
-	/// Size of the object
-	pub size: u64,
-	/// etag of the object
-	pub etag: String,
-}
-
-/// Additional headers for an object
-#[derive(PartialEq, Eq, PartialOrd, Ord, Clone, Debug, Serialize, Deserialize)]
-pub struct ObjectVersionHeaders {
-	/// Content type of the object
-	pub content_type: String,
-	/// Any other http headers to send
-	pub other: BTreeMap<String, String>,
-}
-
-impl ObjectVersion {
-	fn cmp_key(&self) -> (u64, Uuid) {
-		(self.timestamp, self.uuid)
-	}
-
-	/// Is the object version completely received
-	pub fn is_complete(&self) -> bool {
-		matches!(self.state, ObjectVersionState::Complete(_))
-	}
-}
-
-impl Crdt for Object {
-	fn merge(&mut self, other: &Self) {
-		// Merge versions from other into here
-		for other_v in other.versions.iter() {
-			match self
-				.versions
-				.binary_search_by(|v| v.cmp_key().cmp(&other_v.cmp_key()))
-			{
-				Ok(i) => {
-					self.versions[i].state.merge(&other_v.state);
-				}
-				Err(i) => {
-					self.versions.insert(i, other_v.clone());
-				}
-			}
-		}
-
-		// Remove versions which are obsolete, i.e. those that come
-		// before the last version which .is_complete().
-		let last_complete = self
-			.versions
-			.iter()
-			.enumerate()
-			.rev()
-			.find(|(_, v)| v.is_complete())
-			.map(|(vi, _)| vi);
-
-		if let Some(last_vi) = last_complete {
-			self.versions = self.versions.drain(last_vi..).collect::<Vec<_>>();
-		}
-	}
-}
-- 
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