move admin.rs to admin/mod.rs, before splitting

1 files changed, 1298 insertions, 0 deletions

diff --git a/src/garage/admin/mod.rs b/src/garage/admin/mod.rs
new file mode 100644
index 00000000..36fdf1d0
--- /dev/null
+++ b/src/garage/admin/mod.rs
@@ -0,0 +1,1298 @@
+use std::collections::HashMap;
+use std::fmt::Write;
+use std::sync::Arc;
+
+use async_trait::async_trait;
+use serde::{Deserialize, Serialize};
+
+use format_table::format_table_to_string;
+use garage_util::background::BackgroundRunner;
+use garage_util::crdt::*;
+use garage_util::data::*;
+use garage_util::error::Error as GarageError;
+use garage_util::time::*;
+
+use garage_table::replication::*;
+use garage_table::*;
+
+use garage_rpc::ring::PARTITION_BITS;
+use garage_rpc::*;
+
+use garage_block::manager::BlockResyncErrorInfo;
+
+use garage_model::bucket_alias_table::*;
+use garage_model::bucket_table::*;
+use garage_model::garage::Garage;
+use garage_model::helper::error::{Error, OkOrBadRequest};
+use garage_model::key_table::*;
+use garage_model::migrate::Migrate;
+use garage_model::permission::*;
+use garage_model::s3::object_table::*;
+use garage_model::s3::version_table::Version;
+
+use crate::cli::*;
+use crate::repair::online::launch_online_repair;
+
+pub const ADMIN_RPC_PATH: &str = "garage/admin_rpc.rs/Rpc";
+
+#[derive(Debug, Serialize, Deserialize)]
+#[allow(clippy::large_enum_variant)]
+pub enum AdminRpc {
+	BucketOperation(BucketOperation),
+	KeyOperation(KeyOperation),
+	LaunchRepair(RepairOpt),
+	Migrate(MigrateOpt),
+	Stats(StatsOpt),
+	Worker(WorkerOperation),
+	BlockOperation(BlockOperation),
+
+	// Replies
+	Ok(String),
+	BucketList(Vec<Bucket>),
+	BucketInfo {
+		bucket: Bucket,
+		relevant_keys: HashMap<String, Key>,
+		counters: HashMap<String, i64>,
+	},
+	KeyList(Vec<(String, String)>),
+	KeyInfo(Key, HashMap<Uuid, Bucket>),
+	WorkerList(
+		HashMap<usize, garage_util::background::WorkerInfo>,
+		WorkerListOpt,
+	),
+	WorkerVars(Vec<(Uuid, String, String)>),
+	WorkerInfo(usize, garage_util::background::WorkerInfo),
+	BlockErrorList(Vec<BlockResyncErrorInfo>),
+	BlockInfo {
+		hash: Hash,
+		refcount: u64,
+		versions: Vec<Result<Version, Uuid>>,
+	},
+}
+
+impl Rpc for AdminRpc {
+	type Response = Result<AdminRpc, Error>;
+}
+
+pub struct AdminRpcHandler {
+	garage: Arc<Garage>,
+	background: Arc<BackgroundRunner>,
+	endpoint: Arc<Endpoint<AdminRpc, Self>>,
+}
+
+impl AdminRpcHandler {
+	pub fn new(garage: Arc<Garage>, background: Arc<BackgroundRunner>) -> Arc<Self> {
+		let endpoint = garage.system.netapp.endpoint(ADMIN_RPC_PATH.into());
+		let admin = Arc::new(Self {
+			garage,
+			background,
+			endpoint,
+		});
+		admin.endpoint.set_handler(admin.clone());
+		admin
+	}
+
+	// ================ BUCKET COMMANDS ====================
+
+	async fn handle_bucket_cmd(&self, cmd: &BucketOperation) -> Result<AdminRpc, Error> {
+		match cmd {
+			BucketOperation::List => self.handle_list_buckets().await,
+			BucketOperation::Info(query) => self.handle_bucket_info(query).await,
+			BucketOperation::Create(query) => self.handle_create_bucket(&query.name).await,
+			BucketOperation::Delete(query) => self.handle_delete_bucket(query).await,
+			BucketOperation::Alias(query) => self.handle_alias_bucket(query).await,
+			BucketOperation::Unalias(query) => self.handle_unalias_bucket(query).await,
+			BucketOperation::Allow(query) => self.handle_bucket_allow(query).await,
+			BucketOperation::Deny(query) => self.handle_bucket_deny(query).await,
+			BucketOperation::Website(query) => self.handle_bucket_website(query).await,
+			BucketOperation::SetQuotas(query) => self.handle_bucket_set_quotas(query).await,
+			BucketOperation::CleanupIncompleteUploads(query) => {
+				self.handle_bucket_cleanup_incomplete_uploads(query).await
+			}
+		}
+	}
+
+	async fn handle_list_buckets(&self) -> Result<AdminRpc, Error> {
+		let buckets = self
+			.garage
+			.bucket_table
+			.get_range(
+				&EmptyKey,
+				None,
+				Some(DeletedFilter::NotDeleted),
+				10000,
+				EnumerationOrder::Forward,
+			)
+			.await?;
+
+		Ok(AdminRpc::BucketList(buckets))
+	}
+
+	async fn handle_bucket_info(&self, query: &BucketOpt) -> Result<AdminRpc, Error> {
+		let bucket_id = self
+			.garage
+			.bucket_helper()
+			.resolve_global_bucket_name(&query.name)
+			.await?
+			.ok_or_bad_request("Bucket not found")?;
+
+		let bucket = self
+			.garage
+			.bucket_helper()
+			.get_existing_bucket(bucket_id)
+			.await?;
+
+		let counters = self
+			.garage
+			.object_counter_table
+			.table
+			.get(&bucket_id, &EmptyKey)
+			.await?
+			.map(|x| x.filtered_values(&self.garage.system.ring.borrow()))
+			.unwrap_or_default();
+
+		let mut relevant_keys = HashMap::new();
+		for (k, _) in bucket
+			.state
+			.as_option()
+			.unwrap()
+			.authorized_keys
+			.items()
+			.iter()
+		{
+			if let Some(key) = self
+				.garage
+				.key_table
+				.get(&EmptyKey, k)
+				.await?
+				.filter(|k| !k.is_deleted())
+			{
+				relevant_keys.insert(k.clone(), key);
+			}
+		}
+		for ((k, _), _, _) in bucket
+			.state
+			.as_option()
+			.unwrap()
+			.local_aliases
+			.items()
+			.iter()
+		{
+			if relevant_keys.contains_key(k) {
+				continue;
+			}
+			if let Some(key) = self.garage.key_table.get(&EmptyKey, k).await? {
+				relevant_keys.insert(k.clone(), key);
+			}
+		}
+
+		Ok(AdminRpc::BucketInfo {
+			bucket,
+			relevant_keys,
+			counters,
+		})
+	}
+
+	#[allow(clippy::ptr_arg)]
+	async fn handle_create_bucket(&self, name: &String) -> Result<AdminRpc, Error> {
+		if !is_valid_bucket_name(name) {
+			return Err(Error::BadRequest(format!(
+				"{}: {}",
+				name, INVALID_BUCKET_NAME_MESSAGE
+			)));
+		}
+
+		if let Some(alias) = self.garage.bucket_alias_table.get(&EmptyKey, name).await? {
+			if alias.state.get().is_some() {
+				return Err(Error::BadRequest(format!("Bucket {} already exists", name)));
+			}
+		}
+
+		// ---- done checking, now commit ----
+
+		let bucket = Bucket::new();
+		self.garage.bucket_table.insert(&bucket).await?;
+
+		self.garage
+			.bucket_helper()
+			.set_global_bucket_alias(bucket.id, name)
+			.await?;
+
+		Ok(AdminRpc::Ok(format!("Bucket {} was created.", name)))
+	}
+
+	async fn handle_delete_bucket(&self, query: &DeleteBucketOpt) -> Result<AdminRpc, Error> {
+		let helper = self.garage.bucket_helper();
+
+		let bucket_id = helper
+			.resolve_global_bucket_name(&query.name)
+			.await?
+			.ok_or_bad_request("Bucket not found")?;
+
+		// Get the alias, but keep in minde here the bucket name
+		// given in parameter can also be directly the bucket's ID.
+		// In that case bucket_alias will be None, and
+		// we can still delete the bucket if it has zero aliases
+		// (a condition which we try to prevent but that could still happen somehow).
+		// We just won't try to delete an alias entry because there isn't one.
+		let bucket_alias = self
+			.garage
+			.bucket_alias_table
+			.get(&EmptyKey, &query.name)
+			.await?;
+
+		// Check bucket doesn't have other aliases
+		let mut bucket = helper.get_existing_bucket(bucket_id).await?;
+		let bucket_state = bucket.state.as_option().unwrap();
+		if bucket_state
+			.aliases
+			.items()
+			.iter()
+			.filter(|(_, _, active)| *active)
+			.any(|(name, _, _)| name != &query.name)
+		{
+			return Err(Error::BadRequest(format!("Bucket {} still has other global aliases. Use `bucket unalias` to delete them one by one.", query.name)));
+		}
+		if bucket_state
+			.local_aliases
+			.items()
+			.iter()
+			.any(|(_, _, active)| *active)
+		{
+			return Err(Error::BadRequest(format!("Bucket {} still has other local aliases. Use `bucket unalias` to delete them one by one.", query.name)));
+		}
+
+		// Check bucket is empty
+		if !helper.is_bucket_empty(bucket_id).await? {
+			return Err(Error::BadRequest(format!(
+				"Bucket {} is not empty",
+				query.name
+			)));
+		}
+
+		if !query.yes {
+			return Err(Error::BadRequest(
+				"Add --yes flag to really perform this operation".to_string(),
+			));
+		}
+
+		// --- done checking, now commit ---
+		// 1. delete authorization from keys that had access
+		for (key_id, _) in bucket.authorized_keys() {
+			helper
+				.set_bucket_key_permissions(bucket.id, key_id, BucketKeyPerm::NO_PERMISSIONS)
+				.await?;
+		}
+
+		// 2. delete bucket alias
+		if bucket_alias.is_some() {
+			helper
+				.purge_global_bucket_alias(bucket_id, &query.name)
+				.await?;
+		}
+
+		// 3. delete bucket
+		bucket.state = Deletable::delete();
+		self.garage.bucket_table.insert(&bucket).await?;
+
+		Ok(AdminRpc::Ok(format!("Bucket {} was deleted.", query.name)))
+	}
+
+	async fn handle_alias_bucket(&self, query: &AliasBucketOpt) -> Result<AdminRpc, Error> {
+		let helper = self.garage.bucket_helper();
+		let key_helper = self.garage.key_helper();
+
+		let bucket_id = helper
+			.resolve_global_bucket_name(&query.existing_bucket)
+			.await?
+			.ok_or_bad_request("Bucket not found")?;
+
+		if let Some(key_pattern) = &query.local {
+			let key = key_helper.get_existing_matching_key(key_pattern).await?;
+
+			helper
+				.set_local_bucket_alias(bucket_id, &key.key_id, &query.new_name)
+				.await?;
+			Ok(AdminRpc::Ok(format!(
+				"Alias {} now points to bucket {:?} in namespace of key {}",
+				query.new_name, bucket_id, key.key_id
+			)))
+		} else {
+			helper
+				.set_global_bucket_alias(bucket_id, &query.new_name)
+				.await?;
+			Ok(AdminRpc::Ok(format!(
+				"Alias {} now points to bucket {:?}",
+				query.new_name, bucket_id
+			)))
+		}
+	}
+
+	async fn handle_unalias_bucket(&self, query: &UnaliasBucketOpt) -> Result<AdminRpc, Error> {
+		let helper = self.garage.bucket_helper();
+		let key_helper = self.garage.key_helper();
+
+		if let Some(key_pattern) = &query.local {
+			let key = key_helper.get_existing_matching_key(key_pattern).await?;
+
+			let bucket_id = key
+				.state
+				.as_option()
+				.unwrap()
+				.local_aliases
+				.get(&query.name)
+				.cloned()
+				.flatten()
+				.ok_or_bad_request("Bucket not found")?;
+
+			helper
+				.unset_local_bucket_alias(bucket_id, &key.key_id, &query.name)
+				.await?;
+
+			Ok(AdminRpc::Ok(format!(
+				"Alias {} no longer points to bucket {:?} in namespace of key {}",
+				&query.name, bucket_id, key.key_id
+			)))
+		} else {
+			let bucket_id = helper
+				.resolve_global_bucket_name(&query.name)
+				.await?
+				.ok_or_bad_request("Bucket not found")?;
+
+			helper
+				.unset_global_bucket_alias(bucket_id, &query.name)
+				.await?;
+
+			Ok(AdminRpc::Ok(format!(
+				"Alias {} no longer points to bucket {:?}",
+				&query.name, bucket_id
+			)))
+		}
+	}
+
+	async fn handle_bucket_allow(&self, query: &PermBucketOpt) -> Result<AdminRpc, Error> {
+		let helper = self.garage.bucket_helper();
+		let key_helper = self.garage.key_helper();
+
+		let bucket_id = helper
+			.resolve_global_bucket_name(&query.bucket)
+			.await?
+			.ok_or_bad_request("Bucket not found")?;
+		let key = key_helper
+			.get_existing_matching_key(&query.key_pattern)
+			.await?;
+
+		let allow_read = query.read || key.allow_read(&bucket_id);
+		let allow_write = query.write || key.allow_write(&bucket_id);
+		let allow_owner = query.owner || key.allow_owner(&bucket_id);
+
+		helper
+			.set_bucket_key_permissions(
+				bucket_id,
+				&key.key_id,
+				BucketKeyPerm {
+					timestamp: now_msec(),
+					allow_read,
+					allow_write,
+					allow_owner,
+				},
+			)
+			.await?;
+
+		Ok(AdminRpc::Ok(format!(
+			"New permissions for {} on {}: read {}, write {}, owner {}.",
+			&key.key_id, &query.bucket, allow_read, allow_write, allow_owner
+		)))
+	}
+
+	async fn handle_bucket_deny(&self, query: &PermBucketOpt) -> Result<AdminRpc, Error> {
+		let helper = self.garage.bucket_helper();
+		let key_helper = self.garage.key_helper();
+
+		let bucket_id = helper
+			.resolve_global_bucket_name(&query.bucket)
+			.await?
+			.ok_or_bad_request("Bucket not found")?;
+		let key = key_helper
+			.get_existing_matching_key(&query.key_pattern)
+			.await?;
+
+		let allow_read = !query.read && key.allow_read(&bucket_id);
+		let allow_write = !query.write && key.allow_write(&bucket_id);
+		let allow_owner = !query.owner && key.allow_owner(&bucket_id);
+
+		helper
+			.set_bucket_key_permissions(
+				bucket_id,
+				&key.key_id,
+				BucketKeyPerm {
+					timestamp: now_msec(),
+					allow_read,
+					allow_write,
+					allow_owner,
+				},
+			)
+			.await?;
+
+		Ok(AdminRpc::Ok(format!(
+			"New permissions for {} on {}: read {}, write {}, owner {}.",
+			&key.key_id, &query.bucket, allow_read, allow_write, allow_owner
+		)))
+	}
+
+	async fn handle_bucket_website(&self, query: &WebsiteOpt) -> Result<AdminRpc, Error> {
+		let bucket_id = self
+			.garage
+			.bucket_helper()
+			.resolve_global_bucket_name(&query.bucket)
+			.await?
+			.ok_or_bad_request("Bucket not found")?;
+
+		let mut bucket = self
+			.garage
+			.bucket_helper()
+			.get_existing_bucket(bucket_id)
+			.await?;
+		let bucket_state = bucket.state.as_option_mut().unwrap();
+
+		if !(query.allow ^ query.deny) {
+			return Err(Error::BadRequest(
+				"You must specify exactly one flag, either --allow or --deny".to_string(),
+			));
+		}
+
+		let website = if query.allow {
+			Some(WebsiteConfig {
+				index_document: query.index_document.clone(),
+				error_document: query.error_document.clone(),
+			})
+		} else {
+			None
+		};
+
+		bucket_state.website_config.update(website);
+		self.garage.bucket_table.insert(&bucket).await?;
+
+		let msg = if query.allow {
+			format!("Website access allowed for {}", &query.bucket)
+		} else {
+			format!("Website access denied for {}", &query.bucket)
+		};
+
+		Ok(AdminRpc::Ok(msg))
+	}
+
+	async fn handle_bucket_set_quotas(&self, query: &SetQuotasOpt) -> Result<AdminRpc, Error> {
+		let bucket_id = self
+			.garage
+			.bucket_helper()
+			.resolve_global_bucket_name(&query.bucket)
+			.await?
+			.ok_or_bad_request("Bucket not found")?;
+
+		let mut bucket = self
+			.garage
+			.bucket_helper()
+			.get_existing_bucket(bucket_id)
+			.await?;
+		let bucket_state = bucket.state.as_option_mut().unwrap();
+
+		if query.max_size.is_none() && query.max_objects.is_none() {
+			return Err(Error::BadRequest(
+				"You must specify either --max-size or --max-objects (or both) for this command to do something.".to_string(),
+			));
+		}
+
+		let mut quotas = bucket_state.quotas.get().clone();
+
+		match query.max_size.as_ref().map(String::as_ref) {
+			Some("none") => quotas.max_size = None,
+			Some(v) => {
+				let bs = v
+					.parse::<bytesize::ByteSize>()
+					.ok_or_bad_request(format!("Invalid size specified: {}", v))?;
+				quotas.max_size = Some(bs.as_u64());
+			}
+			_ => (),
+		}
+
+		match query.max_objects.as_ref().map(String::as_ref) {
+			Some("none") => quotas.max_objects = None,
+			Some(v) => {
+				let mo = v
+					.parse::<u64>()
+					.ok_or_bad_request(format!("Invalid number specified: {}", v))?;
+				quotas.max_objects = Some(mo);
+			}
+			_ => (),
+		}
+
+		bucket_state.quotas.update(quotas);
+		self.garage.bucket_table.insert(&bucket).await?;
+
+		Ok(AdminRpc::Ok(format!(
+			"Quotas updated for {}",
+			&query.bucket
+		)))
+	}
+
+	async fn handle_bucket_cleanup_incomplete_uploads(
+		&self,
+		query: &CleanupIncompleteUploadsOpt,
+	) -> Result<AdminRpc, Error> {
+		let mut bucket_ids = vec![];
+		for b in query.buckets.iter() {
+			bucket_ids.push(
+				self.garage
+					.bucket_helper()
+					.resolve_global_bucket_name(b)
+					.await?
+					.ok_or_bad_request(format!("Bucket not found: {}", b))?,
+			);
+		}
+
+		let duration = parse_duration::parse::parse(&query.older_than)
+			.ok_or_bad_request("Invalid duration passed for --older-than parameter")?;
+
+		let mut ret = String::new();
+		for bucket in bucket_ids {
+			let count = self
+				.garage
+				.bucket_helper()
+				.cleanup_incomplete_uploads(&bucket, duration)
+				.await?;
+			writeln!(
+				&mut ret,
+				"Bucket {:?}: {} incomplete uploads aborted",
+				bucket, count
+			)
+			.unwrap();
+		}
+
+		Ok(AdminRpc::Ok(ret))
+	}
+
+	// ================ KEY COMMANDS ====================
+
+	async fn handle_key_cmd(&self, cmd: &KeyOperation) -> Result<AdminRpc, Error> {
+		match cmd {
+			KeyOperation::List => self.handle_list_keys().await,
+			KeyOperation::Info(query) => self.handle_key_info(query).await,
+			KeyOperation::New(query) => self.handle_create_key(query).await,
+			KeyOperation::Rename(query) => self.handle_rename_key(query).await,
+			KeyOperation::Delete(query) => self.handle_delete_key(query).await,
+			KeyOperation::Allow(query) => self.handle_allow_key(query).await,
+			KeyOperation::Deny(query) => self.handle_deny_key(query).await,
+			KeyOperation::Import(query) => self.handle_import_key(query).await,
+		}
+	}
+
+	async fn handle_list_keys(&self) -> Result<AdminRpc, Error> {
+		let key_ids = self
+			.garage
+			.key_table
+			.get_range(
+				&EmptyKey,
+				None,
+				Some(KeyFilter::Deleted(DeletedFilter::NotDeleted)),
+				10000,
+				EnumerationOrder::Forward,
+			)
+			.await?
+			.iter()
+			.map(|k| (k.key_id.to_string(), k.params().unwrap().name.get().clone()))
+			.collect::<Vec<_>>();
+		Ok(AdminRpc::KeyList(key_ids))
+	}
+
+	async fn handle_key_info(&self, query: &KeyOpt) -> Result<AdminRpc, Error> {
+		let key = self
+			.garage
+			.key_helper()
+			.get_existing_matching_key(&query.key_pattern)
+			.await?;
+		self.key_info_result(key).await
+	}
+
+	async fn handle_create_key(&self, query: &KeyNewOpt) -> Result<AdminRpc, Error> {
+		let key = Key::new(&query.name);
+		self.garage.key_table.insert(&key).await?;
+		self.key_info_result(key).await
+	}
+
+	async fn handle_rename_key(&self, query: &KeyRenameOpt) -> Result<AdminRpc, Error> {
+		let mut key = self
+			.garage
+			.key_helper()
+			.get_existing_matching_key(&query.key_pattern)
+			.await?;
+		key.params_mut()
+			.unwrap()
+			.name
+			.update(query.new_name.clone());
+		self.garage.key_table.insert(&key).await?;
+		self.key_info_result(key).await
+	}
+
+	async fn handle_delete_key(&self, query: &KeyDeleteOpt) -> Result<AdminRpc, Error> {
+		let key_helper = self.garage.key_helper();
+
+		let mut key = key_helper
+			.get_existing_matching_key(&query.key_pattern)
+			.await?;
+
+		if !query.yes {
+			return Err(Error::BadRequest(
+				"Add --yes flag to really perform this operation".to_string(),
+			));
+		}
+
+		key_helper.delete_key(&mut key).await?;
+
+		Ok(AdminRpc::Ok(format!(
+			"Key {} was deleted successfully.",
+			key.key_id
+		)))
+	}
+
+	async fn handle_allow_key(&self, query: &KeyPermOpt) -> Result<AdminRpc, Error> {
+		let mut key = self
+			.garage
+			.key_helper()
+			.get_existing_matching_key(&query.key_pattern)
+			.await?;
+		if query.create_bucket {
+			key.params_mut().unwrap().allow_create_bucket.update(true);
+		}
+		self.garage.key_table.insert(&key).await?;
+		self.key_info_result(key).await
+	}
+
+	async fn handle_deny_key(&self, query: &KeyPermOpt) -> Result<AdminRpc, Error> {
+		let mut key = self
+			.garage
+			.key_helper()
+			.get_existing_matching_key(&query.key_pattern)
+			.await?;
+		if query.create_bucket {
+			key.params_mut().unwrap().allow_create_bucket.update(false);
+		}
+		self.garage.key_table.insert(&key).await?;
+		self.key_info_result(key).await
+	}
+
+	async fn handle_import_key(&self, query: &KeyImportOpt) -> Result<AdminRpc, Error> {
+		let prev_key = self.garage.key_table.get(&EmptyKey, &query.key_id).await?;
+		if prev_key.is_some() {
+			return Err(Error::BadRequest(format!("Key {} already exists in data store. Even if it is deleted, we can't let you create a new key with the same ID. Sorry.", query.key_id)));
+		}
+		let imported_key = Key::import(&query.key_id, &query.secret_key, &query.name);
+		self.garage.key_table.insert(&imported_key).await?;
+
+		self.key_info_result(imported_key).await
+	}
+
+	async fn key_info_result(&self, key: Key) -> Result<AdminRpc, Error> {
+		let mut relevant_buckets = HashMap::new();
+
+		for (id, _) in key
+			.state
+			.as_option()
+			.unwrap()
+			.authorized_buckets
+			.items()
+			.iter()
+		{
+			if let Some(b) = self.garage.bucket_table.get(&EmptyKey, id).await? {
+				relevant_buckets.insert(*id, b);
+			}
+		}
+
+		Ok(AdminRpc::KeyInfo(key, relevant_buckets))
+	}
+
+	// ================ MIGRATION COMMANDS ====================
+
+	async fn handle_migrate(self: &Arc<Self>, opt: MigrateOpt) -> Result<AdminRpc, Error> {
+		if !opt.yes {
+			return Err(Error::BadRequest(
+				"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()))
+	}
+
+	// ================ REPAIR COMMANDS ====================
+
+	async fn handle_launch_repair(self: &Arc<Self>, opt: RepairOpt) -> Result<AdminRpc, Error> {
+		if !opt.yes {
+			return Err(Error::BadRequest(
+				"Please provide the --yes flag to initiate repair operations.".to_string(),
+			));
+		}
+		if opt.all_nodes {
+			let mut opt_to_send = opt.clone();
+			opt_to_send.all_nodes = false;
+
+			let mut failures = vec![];
+			let ring = self.garage.system.ring.borrow().clone();
+			for node in ring.layout.node_ids().iter() {
+				let node = (*node).into();
+				let resp = self
+					.endpoint
+					.call(
+						&node,
+						AdminRpc::LaunchRepair(opt_to_send.clone()),
+						PRIO_NORMAL,
+					)
+					.await;
+				if !matches!(resp, Ok(Ok(_))) {
+					failures.push(node);
+				}
+			}
+			if failures.is_empty() {
+				Ok(AdminRpc::Ok("Repair launched on all nodes".to_string()))
+			} else {
+				Err(Error::BadRequest(format!(
+					"Could not launch repair on nodes: {:?} (launched successfully on other nodes)",
+					failures
+				)))
+			}
+		} else {
+			launch_online_repair(&self.garage, &self.background, opt).await?;
+			Ok(AdminRpc::Ok(format!(
+				"Repair launched on {:?}",
+				self.garage.system.id
+			)))
+		}
+	}
+
+	// ================ STATS COMMANDS ====================
+
+	async fn handle_stats(&self, opt: StatsOpt) -> Result<AdminRpc, Error> {
+		if opt.all_nodes {
+			let mut ret = String::new();
+			let ring = self.garage.system.ring.borrow().clone();
+
+			for node in ring.layout.node_ids().iter() {
+				let mut opt = opt.clone();
+				opt.all_nodes = false;
+				opt.skip_global = true;
+
+				writeln!(&mut ret, "\n======================").unwrap();
+				writeln!(&mut ret, "Stats for node {:?}:", node).unwrap();
+
+				let node_id = (*node).into();
+				match self
+					.endpoint
+					.call(&node_id, AdminRpc::Stats(opt), PRIO_NORMAL)
+					.await
+				{
+					Ok(Ok(AdminRpc::Ok(s))) => writeln!(&mut ret, "{}", s).unwrap(),
+					Ok(Ok(x)) => writeln!(&mut ret, "Bad answer: {:?}", x).unwrap(),
+					Ok(Err(e)) => writeln!(&mut ret, "Remote error: {}", e).unwrap(),
+					Err(e) => writeln!(&mut ret, "Network error: {}", e).unwrap(),
+				}
+			}
+
+			writeln!(&mut ret, "\n======================").unwrap();
+			write!(
+				&mut ret,
+				"Cluster statistics:\n\n{}",
+				self.gather_cluster_stats()
+			)
+			.unwrap();
+
+			Ok(AdminRpc::Ok(ret))
+		} else {
+			Ok(AdminRpc::Ok(self.gather_stats_local(opt)?))
+		}
+	}
+
+	fn gather_stats_local(&self, opt: StatsOpt) -> Result<String, Error> {
+		let mut ret = String::new();
+		writeln!(
+			&mut ret,
+			"\nGarage version: {} [features: {}]\nRust compiler version: {}",
+			garage_util::version::garage_version(),
+			garage_util::version::garage_features()
+				.map(|list| list.join(", "))
+				.unwrap_or_else(|| "(unknown)".into()),
+			garage_util::version::rust_version(),
+		)
+		.unwrap();
+
+		writeln!(&mut ret, "\nDatabase engine: {}", self.garage.db.engine()).unwrap();
+
+		// Gather table statistics
+		let mut table = vec!["  Table\tItems\tMklItems\tMklTodo\tGcTodo".into()];
+		table.push(self.gather_table_stats(&self.garage.bucket_table, opt.detailed)?);
+		table.push(self.gather_table_stats(&self.garage.key_table, opt.detailed)?);
+		table.push(self.gather_table_stats(&self.garage.object_table, opt.detailed)?);
+		table.push(self.gather_table_stats(&self.garage.version_table, opt.detailed)?);
+		table.push(self.gather_table_stats(&self.garage.block_ref_table, opt.detailed)?);
+		write!(
+			&mut ret,
+			"\nTable stats:\n{}",
+			format_table_to_string(table)
+		)
+		.unwrap();
+
+		// Gather block manager statistics
+		writeln!(&mut ret, "\nBlock manager stats:").unwrap();
+		let rc_len = if opt.detailed {
+			self.garage.block_manager.rc_len()?.to_string()
+		} else {
+			self.garage
+				.block_manager
+				.rc_fast_len()?
+				.map(|x| x.to_string())
+				.unwrap_or_else(|| "NC".into())
+		};
+
+		writeln!(
+			&mut ret,
+			"  number of RC entries (~= number of blocks): {}",
+			rc_len
+		)
+		.unwrap();
+		writeln!(
+			&mut ret,
+			"  resync queue length: {}",
+			self.garage.block_manager.resync.queue_len()?
+		)
+		.unwrap();
+		writeln!(
+			&mut ret,
+			"  blocks with resync errors: {}",
+			self.garage.block_manager.resync.errors_len()?
+		)
+		.unwrap();
+
+		if !opt.detailed {
+			writeln!(&mut ret, "\nIf values are missing above (marked as NC), consider adding the --detailed flag (this will be slow).").unwrap();
+		}
+
+		if !opt.skip_global {
+			write!(&mut ret, "\n{}", self.gather_cluster_stats()).unwrap();
+		}
+
+		Ok(ret)
+	}
+
+	fn gather_cluster_stats(&self) -> String {
+		let mut ret = String::new();
+
+		// Gather storage node and free space statistics
+		let layout = &self.garage.system.ring.borrow().layout;
+		let mut node_partition_count = HashMap::<Uuid, u64>::new();
+		for short_id in layout.ring_assignation_data.iter() {
+			let id = layout.node_id_vec[*short_id as usize];
+			*node_partition_count.entry(id).or_default() += 1;
+		}
+		let node_info = self
+			.garage
+			.system
+			.get_known_nodes()
+			.into_iter()
+			.map(|n| (n.id, n))
+			.collect::<HashMap<_, _>>();
+
+		let mut table = vec!["  ID\tHostname\tZone\tCapacity\tPart.\tDataAvail\tMetaAvail".into()];
+		for (id, parts) in node_partition_count.iter() {
+			let info = node_info.get(id);
+			let status = info.map(|x| &x.status);
+			let role = layout.roles.get(id).and_then(|x| x.0.as_ref());
+			let hostname = status.map(|x| x.hostname.as_str()).unwrap_or("?");
+			let zone = role.map(|x| x.zone.as_str()).unwrap_or("?");
+			let capacity = role
+				.map(|x| x.capacity_string())
+				.unwrap_or_else(|| "?".into());
+			let avail_str = |x| match x {
+				Some((avail, total)) => {
+					let pct = (avail as f64) / (total as f64) * 100.;
+					let avail = bytesize::ByteSize::b(avail);
+					let total = bytesize::ByteSize::b(total);
+					format!("{}/{} ({:.1}%)", avail, total, pct)
+				}
+				None => "?".into(),
+			};
+			let data_avail = avail_str(status.and_then(|x| x.data_disk_avail));
+			let meta_avail = avail_str(status.and_then(|x| x.meta_disk_avail));
+			table.push(format!(
+				"  {:?}\t{}\t{}\t{}\t{}\t{}\t{}",
+				id, hostname, zone, capacity, parts, data_avail, meta_avail
+			));
+		}
+		write!(
+			&mut ret,
+			"Storage nodes:\n{}",
+			format_table_to_string(table)
+		)
+		.unwrap();
+
+		let meta_part_avail = node_partition_count
+			.iter()
+			.filter_map(|(id, parts)| {
+				node_info
+					.get(id)
+					.and_then(|x| x.status.meta_disk_avail)
+					.map(|c| c.0 / *parts)
+			})
+			.collect::<Vec<_>>();
+		let data_part_avail = node_partition_count
+			.iter()
+			.filter_map(|(id, parts)| {
+				node_info
+					.get(id)
+					.and_then(|x| x.status.data_disk_avail)
+					.map(|c| c.0 / *parts)
+			})
+			.collect::<Vec<_>>();
+		if !meta_part_avail.is_empty() && !data_part_avail.is_empty() {
+			let meta_avail =
+				bytesize::ByteSize(meta_part_avail.iter().min().unwrap() * (1 << PARTITION_BITS));
+			let data_avail =
+				bytesize::ByteSize(data_part_avail.iter().min().unwrap() * (1 << PARTITION_BITS));
+			writeln!(
+				&mut ret,
+				"\nEstimated available storage space cluster-wide (might be lower in practice):"
+			)
+			.unwrap();
+			if meta_part_avail.len() < node_partition_count.len()
+				|| data_part_avail.len() < node_partition_count.len()
+			{
+				writeln!(&mut ret, "  data: < {}", data_avail).unwrap();
+				writeln!(&mut ret, "  metadata: < {}", meta_avail).unwrap();
+				writeln!(&mut ret, "A precise estimate could not be given as information is missing for some storage nodes.").unwrap();
+			} else {
+				writeln!(&mut ret, "  data: {}", data_avail).unwrap();
+				writeln!(&mut ret, "  metadata: {}", meta_avail).unwrap();
+			}
+		}
+
+		ret
+	}
+
+	fn gather_table_stats<F, R>(
+		&self,
+		t: &Arc<Table<F, R>>,
+		detailed: bool,
+	) -> Result<String, Error>
+	where
+		F: TableSchema + 'static,
+		R: TableReplication + 'static,
+	{
+		let (data_len, mkl_len) = if detailed {
+			(
+				t.data.store.len().map_err(GarageError::from)?.to_string(),
+				t.merkle_updater.merkle_tree_len()?.to_string(),
+			)
+		} else {
+			(
+				t.data
+					.store
+					.fast_len()
+					.map_err(GarageError::from)?
+					.map(|x| x.to_string())
+					.unwrap_or_else(|| "NC".into()),
+				t.merkle_updater
+					.merkle_tree_fast_len()?
+					.map(|x| x.to_string())
+					.unwrap_or_else(|| "NC".into()),
+			)
+		};
+
+		Ok(format!(
+			"  {}\t{}\t{}\t{}\t{}",
+			F::TABLE_NAME,
+			data_len,
+			mkl_len,
+			t.merkle_updater.todo_len()?,
+			t.data.gc_todo_len()?
+		))
+	}
+
+	// ================ WORKER COMMANDS ====================
+
+	async fn handle_worker_cmd(&self, cmd: &WorkerOperation) -> Result<AdminRpc, Error> {
+		match cmd {
+			WorkerOperation::List { opt } => {
+				let workers = self.background.get_worker_info();
+				Ok(AdminRpc::WorkerList(workers, *opt))
+			}
+			WorkerOperation::Info { tid } => {
+				let info = self
+					.background
+					.get_worker_info()
+					.get(tid)
+					.ok_or_bad_request(format!("No worker with TID {}", tid))?
+					.clone();
+				Ok(AdminRpc::WorkerInfo(*tid, info))
+			}
+			WorkerOperation::Get {
+				all_nodes,
+				variable,
+			} => self.handle_get_var(*all_nodes, variable).await,
+			WorkerOperation::Set {
+				all_nodes,
+				variable,
+				value,
+			} => self.handle_set_var(*all_nodes, variable, value).await,
+		}
+	}
+
+	async fn handle_get_var(
+		&self,
+		all_nodes: bool,
+		variable: &Option<String>,
+	) -> Result<AdminRpc, Error> {
+		if all_nodes {
+			let mut ret = vec![];
+			let ring = self.garage.system.ring.borrow().clone();
+			for node in ring.layout.node_ids().iter() {
+				let node = (*node).into();
+				match self
+					.endpoint
+					.call(
+						&node,
+						AdminRpc::Worker(WorkerOperation::Get {
+							all_nodes: false,
+							variable: variable.clone(),
+						}),
+						PRIO_NORMAL,
+					)
+					.await??
+				{
+					AdminRpc::WorkerVars(v) => ret.extend(v),
+					m => return Err(GarageError::unexpected_rpc_message(m).into()),
+				}
+			}
+			Ok(AdminRpc::WorkerVars(ret))
+		} else {
+			#[allow(clippy::collapsible_else_if)]
+			if let Some(v) = variable {
+				Ok(AdminRpc::WorkerVars(vec![(
+					self.garage.system.id,
+					v.clone(),
+					self.garage.bg_vars.get(v)?,
+				)]))
+			} else {
+				let mut vars = self.garage.bg_vars.get_all();
+				vars.sort();
+				Ok(AdminRpc::WorkerVars(
+					vars.into_iter()
+						.map(|(k, v)| (self.garage.system.id, k.to_string(), v))
+						.collect(),
+				))
+			}
+		}
+	}
+
+	async fn handle_set_var(
+		&self,
+		all_nodes: bool,
+		variable: &str,
+		value: &str,
+	) -> Result<AdminRpc, Error> {
+		if all_nodes {
+			let mut ret = vec![];
+			let ring = self.garage.system.ring.borrow().clone();
+			for node in ring.layout.node_ids().iter() {
+				let node = (*node).into();
+				match self
+					.endpoint
+					.call(
+						&node,
+						AdminRpc::Worker(WorkerOperation::Set {
+							all_nodes: false,
+							variable: variable.to_string(),
+							value: value.to_string(),
+						}),
+						PRIO_NORMAL,
+					)
+					.await??
+				{
+					AdminRpc::WorkerVars(v) => ret.extend(v),
+					m => return Err(GarageError::unexpected_rpc_message(m).into()),
+				}
+			}
+			Ok(AdminRpc::WorkerVars(ret))
+		} else {
+			self.garage.bg_vars.set(variable, value)?;
+			Ok(AdminRpc::WorkerVars(vec![(
+				self.garage.system.id,
+				variable.to_string(),
+				value.to_string(),
+			)]))
+		}
+	}
+
+	// ================ BLOCK COMMANDS ====================
+
+	async fn handle_block_cmd(&self, cmd: &BlockOperation) -> Result<AdminRpc, Error> {
+		match cmd {
+			BlockOperation::ListErrors => Ok(AdminRpc::BlockErrorList(
+				self.garage.block_manager.list_resync_errors()?,
+			)),
+			BlockOperation::Info { hash } => {
+				let hash = hex::decode(hash).ok_or_bad_request("invalid hash")?;
+				let hash = Hash::try_from(&hash).ok_or_bad_request("invalid hash")?;
+				let refcount = self.garage.block_manager.get_block_rc(&hash)?;
+				let block_refs = self
+					.garage
+					.block_ref_table
+					.get_range(&hash, None, None, 10000, Default::default())
+					.await?;
+				let mut versions = vec![];
+				for br in block_refs {
+					if let Some(v) = self
+						.garage
+						.version_table
+						.get(&br.version, &EmptyKey)
+						.await?
+					{
+						versions.push(Ok(v));
+					} else {
+						versions.push(Err(br.version));
+					}
+				}
+				Ok(AdminRpc::BlockInfo {
+					hash,
+					refcount,
+					versions,
+				})
+			}
+			BlockOperation::RetryNow { all, blocks } => {
+				if *all {
+					if !blocks.is_empty() {
+						return Err(Error::BadRequest(
+							"--all was specified, cannot also specify blocks".into(),
+						));
+					}
+					let blocks = self.garage.block_manager.list_resync_errors()?;
+					for b in blocks.iter() {
+						self.garage.block_manager.resync.clear_backoff(&b.hash)?;
+					}
+					Ok(AdminRpc::Ok(format!(
+						"{} blocks returned in queue for a retry now (check logs to see results)",
+						blocks.len()
+					)))
+				} else {
+					for hash in blocks {
+						let hash = hex::decode(hash).ok_or_bad_request("invalid hash")?;
+						let hash = Hash::try_from(&hash).ok_or_bad_request("invalid hash")?;
+						self.garage.block_manager.resync.clear_backoff(&hash)?;
+					}
+					Ok(AdminRpc::Ok(format!(
+						"{} blocks returned in queue for a retry now (check logs to see results)",
+						blocks.len()
+					)))
+				}
+			}
+			BlockOperation::Purge { yes, blocks } => {
+				if !yes {
+					return Err(Error::BadRequest(
+						"Pass the --yes flag to confirm block purge operation.".into(),
+					));
+				}
+
+				let mut obj_dels = 0;
+				let mut ver_dels = 0;
+
+				for hash in blocks {
+					let hash = hex::decode(hash).ok_or_bad_request("invalid hash")?;
+					let hash = Hash::try_from(&hash).ok_or_bad_request("invalid hash")?;
+					let block_refs = self
+						.garage
+						.block_ref_table
+						.get_range(&hash, None, None, 10000, Default::default())
+						.await?;
+
+					for br in block_refs {
+						let version = match self
+							.garage
+							.version_table
+							.get(&br.version, &EmptyKey)
+							.await?
+						{
+							Some(v) => v,
+							None => continue,
+						};
+
+						if let Some(object) = self
+							.garage
+							.object_table
+							.get(&version.bucket_id, &version.key)
+							.await?
+						{
+							let ov = object.versions().iter().rev().find(|v| v.is_complete());
+							if let Some(ov) = ov {
+								if ov.uuid == br.version {
+									let del_uuid = gen_uuid();
+									let deleted_object = Object::new(
+										version.bucket_id,
+										version.key.clone(),
+										vec![ObjectVersion {
+											uuid: del_uuid,
+											timestamp: ov.timestamp + 1,
+											state: ObjectVersionState::Complete(
+												ObjectVersionData::DeleteMarker,
+											),
+										}],
+									);
+									self.garage.object_table.insert(&deleted_object).await?;
+									obj_dels += 1;
+								}
+							}
+						}
+
+						if !version.deleted.get() {
+							let deleted_version = Version::new(
+								version.uuid,
+								version.bucket_id,
+								version.key.clone(),
+								true,
+							);
+							self.garage.version_table.insert(&deleted_version).await?;
+							ver_dels += 1;
+						}
+					}
+				}
+				Ok(AdminRpc::Ok(format!(
+					"{} blocks were purged: {} object deletion markers added, {} versions marked deleted",
+					blocks.len(),
+					obj_dels,
+					ver_dels
+				)))
+			}
+		}
+	}
+}
+
+#[async_trait]
+impl EndpointHandler<AdminRpc> for AdminRpcHandler {
+	async fn handle(
+		self: &Arc<Self>,
+		message: &AdminRpc,
+		_from: NodeID,
+	) -> Result<AdminRpc, Error> {
+		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,
+			AdminRpc::Worker(wo) => self.handle_worker_cmd(wo).await,
+			AdminRpc::BlockOperation(bo) => self.handle_block_cmd(bo).await,
+			m => Err(GarageError::unexpected_rpc_message(m).into()),
+		}
+	}
+}