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-rw-r--r--src/model/helper/bucket.rs56
1 files changed, 56 insertions, 0 deletions
diff --git a/src/model/helper/bucket.rs b/src/model/helper/bucket.rs
new file mode 100644
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+++ b/src/model/helper/bucket.rs
@@ -0,0 +1,56 @@
+use garage_table::util::EmptyKey;
+use garage_util::data::*;
+
+use crate::bucket_table::Bucket;
+use crate::garage::Garage;
+use crate::helper::error::*;
+
+pub struct BucketHelper<'a>(pub(crate) &'a Garage);
+
+impl<'a> BucketHelper<'a> {
+ #[allow(clippy::ptr_arg)]
+ pub async fn resolve_global_bucket_name(
+ &self,
+ bucket_name: &String,
+ ) -> Result<Option<Uuid>, Error> {
+ // Bucket names in Garage are aliases, true bucket identifiers
+ // are 32-byte UUIDs. This function resolves bucket names into
+ // their full identifier by looking up in the bucket_alias_table.
+ // This function also allows buckets to be identified by their
+ // full UUID (hex-encoded). Here, if the name to be resolved is a
+ // hex string of the correct length, it is directly parsed as a bucket
+ // identifier which is returned. There is no risk of this conflicting
+ // with an actual bucket name: bucket names are max 63 chars long by
+ // the AWS spec, and hex-encoded UUIDs are 64 chars long.
+ let hexbucket = hex::decode(bucket_name.as_str())
+ .ok()
+ .map(|by| Uuid::try_from(&by))
+ .flatten();
+ if let Some(bucket_id) = hexbucket {
+ Ok(self
+ .0
+ .bucket_table
+ .get(&bucket_id, &EmptyKey)
+ .await?
+ .filter(|x| !x.state.is_deleted())
+ .map(|_| bucket_id))
+ } else {
+ Ok(self
+ .0
+ .bucket_alias_table
+ .get(&EmptyKey, bucket_name)
+ .await?
+ .map(|x| x.state.get().as_option().map(|x| x.bucket_id))
+ .flatten())
+ }
+ }
+
+ pub async fn get_existing_bucket(&self, bucket_id: Uuid) -> Result<Bucket, Error> {
+ self.0
+ .bucket_table
+ .get(&bucket_id, &EmptyKey)
+ .await?
+ .filter(|b| !b.is_deleted())
+ .ok_or_bad_request(format!("Bucket {:?} does not exist", bucket_id))
+ }
+}