9 files changed, 272 insertions, 1 deletions

diff --git a/src/garage/admin.rs b/src/garage/admin.rs
index 5599c53f..74b24584 100644
--- a/src/garage/admin.rs
+++ b/src/garage/admin.rs
@@ -19,6 +19,7 @@ use garage_model::bucket_alias_table::*;
 use garage_model::bucket_table::*;
 use garage_model::garage::Garage;
 use garage_model::key_table::*;
+use garage_model::migrate::Migrate;
 use garage_model::permission::*;
 
 use crate::cli::*;
@@ -31,6 +32,7 @@ pub enum AdminRpc {
 	BucketOperation(BucketOperation),
 	KeyOperation(KeyOperation),
 	LaunchRepair(RepairOpt),
+	Migrate(MigrateOpt),
 	Stats(StatsOpt),
 
 	// Replies
@@ -650,6 +652,22 @@ impl AdminRpcHandler {
 		Ok(())
 	}
 
+	async fn handle_migrate(self: &Arc<Self>, opt: MigrateOpt) -> Result<AdminRpc, Error> {
+		if !opt.yes {
+			return Err(Error::BadRpc(
+				"Please provide the --yes flag to initiate migration operation.".to_string(),
+			));
+		}
+
+		let m = Migrate {
+			garage: self.garage.clone(),
+		};
+		match opt.what {
+			MigrateWhat::Buckets050 => m.migrate_buckets050().await,
+		}?;
+		Ok(AdminRpc::Ok("Migration successfull.".into()))
+	}
+
 	async fn handle_launch_repair(self: &Arc<Self>, opt: RepairOpt) -> Result<AdminRpc, Error> {
 		if !opt.yes {
 			return Err(Error::BadRpc(
@@ -819,6 +837,7 @@ impl EndpointHandler<AdminRpc> for AdminRpcHandler {
 		match message {
 			AdminRpc::BucketOperation(bo) => self.handle_bucket_cmd(bo).await,
 			AdminRpc::KeyOperation(ko) => self.handle_key_cmd(ko).await,
+			AdminRpc::Migrate(opt) => self.handle_migrate(opt.clone()).await,
 			AdminRpc::LaunchRepair(opt) => self.handle_launch_repair(opt.clone()).await,
 			AdminRpc::Stats(opt) => self.handle_stats(opt.clone()).await,
 			_ => Err(Error::BadRpc("Invalid RPC".to_string())),
diff --git a/src/garage/cli/cmd.rs b/src/garage/cli/cmd.rs
index b7508e45..b65fea02 100644
--- a/src/garage/cli/cmd.rs
+++ b/src/garage/cli/cmd.rs
@@ -29,6 +29,9 @@ pub async fn cli_command_dispatch(
 		Command::Key(ko) => {
 			cmd_admin(admin_rpc_endpoint, rpc_host, AdminRpc::KeyOperation(ko)).await
 		}
+		Command::Migrate(mo) => {
+			cmd_admin(admin_rpc_endpoint, rpc_host, AdminRpc::Migrate(mo)).await
+		}
 		Command::Repair(ro) => {
 			cmd_admin(admin_rpc_endpoint, rpc_host, AdminRpc::LaunchRepair(ro)).await
 		}
diff --git a/src/garage/cli/structs.rs b/src/garage/cli/structs.rs
index 1905069e..bd7abc8e 100644
--- a/src/garage/cli/structs.rs
+++ b/src/garage/cli/structs.rs
@@ -28,6 +28,11 @@ pub enum Command {
 	#[structopt(name = "key")]
 	Key(KeyOperation),
 
+	/// Run migrations from previous Garage version
+	/// (DO NOT USE WITHOUT READING FULL DOCUMENTATION)
+	#[structopt(name = "migrate")]
+	Migrate(MigrateOpt),
+
 	/// Start repair of node data
 	#[structopt(name = "repair")]
 	Repair(RepairOpt),
@@ -320,6 +325,23 @@ pub struct KeyImportOpt {
 }
 
 #[derive(Serialize, Deserialize, StructOpt, Debug, Clone)]
+pub struct MigrateOpt {
+	/// Confirm the launch of the migrate operation
+	#[structopt(long = "yes")]
+	pub yes: bool,
+
+	#[structopt(subcommand)]
+	pub what: MigrateWhat,
+}
+
+#[derive(Serialize, Deserialize, StructOpt, Debug, Eq, PartialEq, Clone)]
+pub enum MigrateWhat {
+	/// Migrate buckets and permissions from v0.5.0
+	#[structopt(name = "buckets050")]
+	Buckets050,
+}
+
+#[derive(Serialize, Deserialize, StructOpt, Debug, Clone)]
 pub struct RepairOpt {
 	/// Launch repair operation on all nodes
 	#[structopt(short = "a", long = "all-nodes")]
diff --git a/src/model/Cargo.toml b/src/model/Cargo.toml
index 12c08719..03881f5d 100644
--- a/src/model/Cargo.toml
+++ b/src/model/Cargo.toml
@@ -17,7 +17,7 @@ path = "lib.rs"
 garage_rpc = { version = "0.6.0", path = "../rpc" }
 garage_table = { version = "0.6.0", path = "../table" }
 garage_util = { version = "0.6.0", path = "../util" }
-garage_model_050 = { package = "garage_model", version = "0.5.0" }
+garage_model_050 = { package = "garage_model", version = "0.5.1" }
 
 async-trait = "0.1.7"
 arc-swap = "1.0"
diff --git a/src/model/key_table.rs b/src/model/key_table.rs
index 469dbd49..526ed496 100644
--- a/src/model/key_table.rs
+++ b/src/model/key_table.rs
@@ -171,4 +171,31 @@ impl TableSchema for KeyTable {
 			}
 		}
 	}
+
+	fn try_migrate(bytes: &[u8]) -> Option<Self::E> {
+		let old_k =
+			match rmp_serde::decode::from_read_ref::<_, garage_model_050::key_table::Key>(bytes) {
+				Ok(x) => x,
+				Err(_) => return None,
+			};
+		let state = if old_k.deleted.get() {
+			crdt::Deletable::Deleted
+		} else {
+			// Authorized buckets is ignored here,
+			// migration is performed in specific migration code in
+			// garage/migrate.rs
+			crdt::Deletable::Present(KeyParams {
+				allow_create_bucket: crdt::Lww::new(false),
+				authorized_buckets: crdt::Map::new(),
+				local_aliases: crdt::LwwMap::new(),
+			})
+		};
+		let name = crdt::Lww::migrate_from_raw(old_k.name.timestamp(), old_k.name.get().clone());
+		Some(Key {
+			key_id: old_k.key_id,
+			secret_key: old_k.secret_key,
+			name,
+			state,
+		})
+	}
 }
diff --git a/src/model/lib.rs b/src/model/lib.rs
index fe8cfdad..3f6b5cd4 100644
--- a/src/model/lib.rs
+++ b/src/model/lib.rs
@@ -8,6 +8,7 @@ pub mod bucket_helper;
 pub mod bucket_table;
 pub mod garage;
 pub mod key_table;
+pub mod migrate;
 pub mod object_table;
 pub mod permission;
 pub mod version_table;
diff --git a/src/model/migrate.rs b/src/model/migrate.rs
new file mode 100644
index 00000000..35ff1807
--- /dev/null
+++ b/src/model/migrate.rs
@@ -0,0 +1,93 @@
+use std::sync::Arc;
+
+use garage_table::util::EmptyKey;
+use garage_util::crdt::*;
+use garage_util::data::*;
+use garage_util::error::*;
+use garage_util::time::*;
+
+use garage_model_050::bucket_table as old_bucket;
+
+use crate::bucket_alias_table::*;
+use crate::bucket_table::*;
+use crate::garage::Garage;
+use crate::permission::*;
+
+pub struct Migrate {
+	pub garage: Arc<Garage>,
+}
+
+impl Migrate {
+	pub async fn migrate_buckets050(&self) -> Result<(), Error> {
+		let tree = self.garage.db.open_tree("bucket:table")?;
+
+		for res in tree.iter() {
+			let (_k, v) = res?;
+			let bucket = rmp_serde::decode::from_read_ref::<_, old_bucket::Bucket>(&v[..])?;
+
+			if let old_bucket::BucketState::Present(p) = bucket.state.get() {
+				self.migrate_buckets050_do_bucket(&bucket, p).await?;
+			}
+		}
+
+		Ok(())
+	}
+
+	pub async fn migrate_buckets050_do_bucket(
+		&self,
+		old_bucket: &old_bucket::Bucket,
+		old_bucket_p: &old_bucket::BucketParams,
+	) -> Result<(), Error> {
+		let mut new_ak = Map::new();
+		for (k, ts, perm) in old_bucket_p.authorized_keys.items().iter() {
+			new_ak.put(
+				k.to_string(),
+				BucketKeyPerm {
+					timestamp: *ts,
+					allow_read: perm.allow_read,
+					allow_write: perm.allow_write,
+					allow_owner: false,
+				},
+			);
+		}
+
+		let mut aliases = LwwMap::new();
+		aliases.update_in_place(old_bucket.name.clone(), true);
+
+		let new_bucket = Bucket {
+			id: blake2sum(old_bucket.name.as_bytes()),
+			state: Deletable::Present(BucketParams {
+				creation_date: now_msec(),
+				authorized_keys: new_ak.clone(),
+				website_access: Lww::new(*old_bucket_p.website.get()),
+				website_config: Lww::new(None),
+				aliases,
+				local_aliases: LwwMap::new(),
+			}),
+		};
+		self.garage.bucket_table.insert(&new_bucket).await?;
+
+		let new_alias = BucketAlias {
+			name: old_bucket.name.clone(),
+			state: Lww::new(Deletable::Present(AliasParams {
+				bucket_id: new_bucket.id,
+			})),
+		};
+		self.garage.bucket_alias_table.insert(&new_alias).await?;
+
+		for (k, perm) in new_ak.items().iter() {
+			let mut key = self
+				.garage
+				.key_table
+				.get(&EmptyKey, k)
+				.await?
+				.ok_or_message(format!("Missing key: {}", k))?;
+			if let Some(p) = key.state.as_option_mut() {
+				p.authorized_buckets.put(new_bucket.id, *perm);
+			}
+			self.garage.key_table.insert(&key).await?;
+		}
+
+		Ok(())
+	}
+}
diff --git a/src/model/object_table.rs b/src/model/object_table.rs
index 285cb5a7..45f0daf4 100644
--- a/src/model/object_table.rs
+++ b/src/model/object_table.rs
@@ -11,6 +11,8 @@ use garage_table::*;
 
 use crate::version_table::*;
 
+use garage_model_050::object_table as old;
+
 /// An object
 #[derive(PartialEq, Clone, Debug, Serialize, Deserialize)]
 pub struct Object {
@@ -255,4 +257,73 @@ impl TableSchema for ObjectTable {
 		let deleted = !entry.versions.iter().any(|v| v.is_data());
 		filter.apply(deleted)
 	}
+
+	fn try_migrate(bytes: &[u8]) -> Option<Self::E> {
+		let old_v = match rmp_serde::decode::from_read_ref::<_, old::Object>(bytes) {
+			Ok(x) => x,
+			Err(_) => return None,
+		};
+		Some(migrate_object(old_v))
+	}
+}
+
+// vvvvvvvv migration code, stupid stuff vvvvvvvvvvvv
+// (we just want to change bucket into bucket_id by hashing it)
+
+fn migrate_object(o: old::Object) -> Object {
+	let versions = o
+		.versions()
+		.iter()
+		.cloned()
+		.map(migrate_object_version)
+		.collect();
+	Object {
+		bucket_id: blake2sum(o.bucket.as_bytes()),
+		key: o.key,
+		versions,
+	}
+}
+
+fn migrate_object_version(v: old::ObjectVersion) -> ObjectVersion {
+	ObjectVersion {
+		uuid: Uuid::try_from(v.uuid.as_slice()).unwrap(),
+		timestamp: v.timestamp,
+		state: match v.state {
+			old::ObjectVersionState::Uploading(h) => {
+				ObjectVersionState::Uploading(migrate_object_version_headers(h))
+			}
+			old::ObjectVersionState::Complete(d) => {
+				ObjectVersionState::Complete(migrate_object_version_data(d))
+			}
+			old::ObjectVersionState::Aborted => ObjectVersionState::Aborted,
+		},
+	}
+}
+
+fn migrate_object_version_headers(h: old::ObjectVersionHeaders) -> ObjectVersionHeaders {
+	ObjectVersionHeaders {
+		content_type: h.content_type,
+		other: h.other,
+	}
+}
+
+fn migrate_object_version_data(d: old::ObjectVersionData) -> ObjectVersionData {
+	match d {
+		old::ObjectVersionData::DeleteMarker => ObjectVersionData::DeleteMarker,
+		old::ObjectVersionData::Inline(m, b) => {
+			ObjectVersionData::Inline(migrate_object_version_meta(m), b)
+		}
+		old::ObjectVersionData::FirstBlock(m, h) => ObjectVersionData::FirstBlock(
+			migrate_object_version_meta(m),
+			Hash::try_from(h.as_slice()).unwrap(),
+		),
+	}
+}
+
+fn migrate_object_version_meta(m: old::ObjectVersionMeta) -> ObjectVersionMeta {
+	ObjectVersionMeta {
+		headers: migrate_object_version_headers(m.headers),
+		size: m.size,
+		etag: m.etag,
+	}
 }
diff --git a/src/model/version_table.rs b/src/model/version_table.rs
index 4edea0b7..05cae831 100644
--- a/src/model/version_table.rs
+++ b/src/model/version_table.rs
@@ -147,4 +147,39 @@ impl TableSchema for VersionTable {
 	fn matches_filter(entry: &Self::E, filter: &Self::Filter) -> bool {
 		filter.apply(entry.deleted.get())
 	}
+
+	fn try_migrate(bytes: &[u8]) -> Option<Self::E> {
+		let old =
+			match rmp_serde::decode::from_read_ref::<_, garage_model_050::version_table::Version>(
+				bytes,
+			) {
+				Ok(x) => x,
+				Err(_) => return None,
+			};
+		let mut new_blocks = crdt::Map::new();
+		for (k, v) in old.blocks.items().iter() {
+			new_blocks.put(
+				VersionBlockKey {
+					part_number: k.part_number,
+					offset: k.offset,
+				},
+				VersionBlock {
+					hash: Hash::try_from(v.hash.as_slice()).unwrap(),
+					size: v.size,
+				},
+			);
+		}
+		let mut new_parts_etags = crdt::Map::new();
+		for (k, v) in old.parts_etags.items().iter() {
+			new_parts_etags.put(*k, v.clone());
+		}
+		Some(Version {
+			uuid: Hash::try_from(old.uuid.as_slice()).unwrap(),
+			deleted: crdt::Bool::new(old.deleted.get()),
+			blocks: new_blocks,
+			parts_etags: new_parts_etags,
+			bucket_id: blake2sum(old.bucket.as_bytes()),
+			key: old.key,
+		})
+	}
 }