Implement CreateKey, DeleteKey and rudimentary UpdateKey

3 files changed, 113 insertions, 58 deletions

diff --git a/src/model/helper/bucket.rs b/src/model/helper/bucket.rs
index 54d2f97b..7e81b946 100644
--- a/src/model/helper/bucket.rs
+++ b/src/model/helper/bucket.rs
@@ -8,7 +8,7 @@ use crate::bucket_alias_table::*;
 use crate::bucket_table::*;
 use crate::garage::Garage;
 use crate::helper::error::*;
-use crate::key_table::{Key, KeyFilter};
+use crate::helper::key::KeyHelper;
 use crate::permission::BucketKeyPerm;
 
 pub struct BucketHelper<'a>(pub(crate) &'a Garage);
@@ -77,60 +77,6 @@ impl<'a> BucketHelper<'a> {
 			))
 	}
 
-	/// Returns a Key if it is present in key table,
-	/// even if it is in deleted state. Querying a non-existing
-	/// key ID returns an internal error.
-	pub async fn get_internal_key(&self, key_id: &String) -> Result<Key, Error> {
-		Ok(self
-			.0
-			.key_table
-			.get(&EmptyKey, key_id)
-			.await?
-			.ok_or_message(format!("Key {} does not exist", key_id))?)
-	}
-
-	/// Returns a Key if it is present in key table,
-	/// only if it is in non-deleted state.
-	/// Querying a non-existing key ID or a deleted key
-	/// returns a bad request error.
-	pub async fn get_existing_key(&self, key_id: &String) -> Result<Key, Error> {
-		self.0
-			.key_table
-			.get(&EmptyKey, key_id)
-			.await?
-			.filter(|b| !b.state.is_deleted())
-			.ok_or_bad_request(format!("Key {} does not exist or has been deleted", key_id))
-	}
-
-	/// Returns a Key if it is present in key table,
-	/// looking it up by key ID or by a match on its name,
-	/// only if it is in non-deleted state.
-	/// Querying a non-existing key ID or a deleted key
-	/// returns a bad request error.
-	pub async fn get_existing_matching_key(&self, pattern: &str) -> Result<Key, Error> {
-		let candidates = self
-			.0
-			.key_table
-			.get_range(
-				&EmptyKey,
-				None,
-				Some(KeyFilter::MatchesAndNotDeleted(pattern.to_string())),
-				10,
-				EnumerationOrder::Forward,
-			)
-			.await?
-			.into_iter()
-			.collect::<Vec<_>>();
-		if candidates.len() != 1 {
-			Err(Error::BadRequest(format!(
-				"{} matching keys",
-				candidates.len()
-			)))
-		} else {
-			Ok(candidates.into_iter().next().unwrap())
-		}
-	}
-
 	/// Sets a new alias for a bucket in global namespace.
 	/// This function fails if:
 	/// - alias name is not valid according to S3 spec
@@ -303,6 +249,8 @@ impl<'a> BucketHelper<'a> {
 		key_id: &String,
 		alias_name: &String,
 	) -> Result<(), Error> {
+		let key_helper = KeyHelper(self.0);
+
 		if !is_valid_bucket_name(alias_name) {
 			return Err(Error::BadRequest(format!(
 				"{}: {}",
@@ -311,7 +259,7 @@ impl<'a> BucketHelper<'a> {
 		}
 
 		let mut bucket = self.get_existing_bucket(bucket_id).await?;
-		let mut key = self.get_existing_key(key_id).await?;
+		let mut key = key_helper.get_existing_key(key_id).await?;
 
 		let mut key_param = key.state.as_option_mut().unwrap();
 
@@ -360,8 +308,10 @@ impl<'a> BucketHelper<'a> {
 		key_id: &String,
 		alias_name: &String,
 	) -> Result<(), Error> {
+		let key_helper = KeyHelper(self.0);
+
 		let mut bucket = self.get_existing_bucket(bucket_id).await?;
-		let mut key = self.get_existing_key(key_id).await?;
+		let mut key = key_helper.get_existing_key(key_id).await?;
 
 		let mut bucket_p = bucket.state.as_option_mut().unwrap();
 
@@ -429,8 +379,10 @@ impl<'a> BucketHelper<'a> {
 		key_id: &String,
 		mut perm: BucketKeyPerm,
 	) -> Result<(), Error> {
+		let key_helper = KeyHelper(self.0);
+
 		let mut bucket = self.get_internal_bucket(bucket_id).await?;
-		let mut key = self.get_internal_key(key_id).await?;
+		let mut key = key_helper.get_internal_key(key_id).await?;
 
 		if let Some(bstate) = bucket.state.as_option() {
 			if let Some(kp) = bstate.authorized_keys.get(key_id) {
diff --git a/src/model/helper/key.rs b/src/model/helper/key.rs
new file mode 100644
index 00000000..eea37f79
--- /dev/null
+++ b/src/model/helper/key.rs
@@ -0,0 +1,102 @@
+use garage_table::util::*;
+use garage_util::crdt::*;
+use garage_util::error::OkOrMessage;
+
+use crate::garage::Garage;
+use crate::helper::bucket::BucketHelper;
+use crate::helper::error::*;
+use crate::key_table::{Key, KeyFilter};
+use crate::permission::BucketKeyPerm;
+
+pub struct KeyHelper<'a>(pub(crate) &'a Garage);
+
+#[allow(clippy::ptr_arg)]
+impl<'a> KeyHelper<'a> {
+	/// Returns a Key if it is present in key table,
+	/// even if it is in deleted state. Querying a non-existing
+	/// key ID returns an internal error.
+	pub async fn get_internal_key(&self, key_id: &String) -> Result<Key, Error> {
+		Ok(self
+			.0
+			.key_table
+			.get(&EmptyKey, key_id)
+			.await?
+			.ok_or_message(format!("Key {} does not exist", key_id))?)
+	}
+
+	/// Returns a Key if it is present in key table,
+	/// only if it is in non-deleted state.
+	/// Querying a non-existing key ID or a deleted key
+	/// returns a bad request error.
+	pub async fn get_existing_key(&self, key_id: &String) -> Result<Key, Error> {
+		self.0
+			.key_table
+			.get(&EmptyKey, key_id)
+			.await?
+			.filter(|b| !b.state.is_deleted())
+			.ok_or_bad_request(format!("Key {} does not exist or has been deleted", key_id))
+	}
+
+	/// Returns a Key if it is present in key table,
+	/// looking it up by key ID or by a match on its name,
+	/// only if it is in non-deleted state.
+	/// Querying a non-existing key ID or a deleted key
+	/// returns a bad request error.
+	pub async fn get_existing_matching_key(&self, pattern: &str) -> Result<Key, Error> {
+		let candidates = self
+			.0
+			.key_table
+			.get_range(
+				&EmptyKey,
+				None,
+				Some(KeyFilter::MatchesAndNotDeleted(pattern.to_string())),
+				10,
+				EnumerationOrder::Forward,
+			)
+			.await?
+			.into_iter()
+			.collect::<Vec<_>>();
+		if candidates.len() != 1 {
+			Err(Error::BadRequest(format!(
+				"{} matching keys",
+				candidates.len()
+			)))
+		} else {
+			Ok(candidates.into_iter().next().unwrap())
+		}
+	}
+
+	/// Deletes an API access key
+	pub async fn delete_key(&self, key: &mut Key) -> Result<(), Error> {
+		let bucket_helper = BucketHelper(self.0);
+
+		let state = key.state.as_option_mut().unwrap();
+
+		// --- done checking, now commit ---
+		// (the step at unset_local_bucket_alias will fail if a bucket
+		// does not have another alias, the deletion will be
+		// interrupted in the middle if that happens)
+
+		// 1. Delete local aliases
+		for (alias, _, to) in state.local_aliases.items().iter() {
+			if let Some(bucket_id) = to {
+				bucket_helper
+					.unset_local_bucket_alias(*bucket_id, &key.key_id, alias)
+					.await?;
+			}
+		}
+
+		// 2. Remove permissions on all authorized buckets
+		for (ab_id, _auth) in state.authorized_buckets.items().iter() {
+			bucket_helper
+				.set_bucket_key_permissions(*ab_id, &key.key_id, BucketKeyPerm::NO_PERMISSIONS)
+				.await?;
+		}
+
+		// 3. Actually delete key
+		key.state = Deletable::delete();
+		self.0.key_table.insert(key).await?;
+
+		Ok(())
+	}
+}
diff --git a/src/model/helper/mod.rs b/src/model/helper/mod.rs
index 2f4e8898..dd947c86 100644
--- a/src/model/helper/mod.rs
+++ b/src/model/helper/mod.rs
@@ -1,2 +1,3 @@
 pub mod bucket;
 pub mod error;
+pub mod key;