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-rw-r--r--src/model/bucket_alias_table.rs17
-rw-r--r--src/model/bucket_table.rs1
-rw-r--r--src/model/helper/bucket.rs79
-rw-r--r--src/model/key_table.rs2
4 files changed, 64 insertions, 35 deletions
diff --git a/src/model/bucket_alias_table.rs b/src/model/bucket_alias_table.rs
index 45807178..fce03d04 100644
--- a/src/model/bucket_alias_table.rs
+++ b/src/model/bucket_alias_table.rs
@@ -10,32 +10,23 @@ use garage_table::*;
#[derive(PartialEq, Clone, Debug, Serialize, Deserialize)]
pub struct BucketAlias {
name: String,
- pub state: crdt::Lww<crdt::Deletable<AliasParams>>,
-}
-
-#[derive(PartialEq, Eq, PartialOrd, Ord, Clone, Debug, Serialize, Deserialize)]
-pub struct AliasParams {
- pub bucket_id: Uuid,
-}
-
-impl AutoCrdt for AliasParams {
- const WARN_IF_DIFFERENT: bool = true;
+ pub state: crdt::Lww<Option<Uuid>>,
}
impl BucketAlias {
- pub fn new(name: String, ts: u64, bucket_id: Uuid) -> Option<Self> {
+ pub fn new(name: String, ts: u64, bucket_id: Option<Uuid>) -> Option<Self> {
if !is_valid_bucket_name(&name) {
None
} else {
Some(BucketAlias {
name,
- state: crdt::Lww::raw(ts, crdt::Deletable::present(AliasParams { bucket_id })),
+ state: crdt::Lww::raw(ts, bucket_id),
})
}
}
pub fn is_deleted(&self) -> bool {
- self.state.get().is_deleted()
+ self.state.get().is_none()
}
pub fn name(&self) -> &str {
&self.name
diff --git a/src/model/bucket_table.rs b/src/model/bucket_table.rs
index fef29b62..52c2316c 100644
--- a/src/model/bucket_table.rs
+++ b/src/model/bucket_table.rs
@@ -63,6 +63,7 @@ impl BucketParams {
impl Crdt for BucketParams {
fn merge(&mut self, o: &Self) {
+ self.creation_date = std::cmp::min(self.creation_date, o.creation_date);
self.authorized_keys.merge(&o.authorized_keys);
self.website_config.merge(&o.website_config);
self.aliases.merge(&o.aliases);
diff --git a/src/model/helper/bucket.rs b/src/model/helper/bucket.rs
index 8bc54b3f..52cedb12 100644
--- a/src/model/helper/bucket.rs
+++ b/src/model/helper/bucket.rs
@@ -46,7 +46,7 @@ impl<'a> BucketHelper<'a> {
.bucket_alias_table
.get(&EmptyKey, bucket_name)
.await?
- .map(|x| x.state.get().as_option().map(|x| x.bucket_id))
+ .map(|x| *x.state.get())
.flatten())
}
}
@@ -154,11 +154,11 @@ impl<'a> BucketHelper<'a> {
let alias = self.0.bucket_alias_table.get(&EmptyKey, alias_name).await?;
if let Some(existing_alias) = alias.as_ref() {
- if let Some(p) = existing_alias.state.get().as_option() {
- if p.bucket_id != bucket_id {
+ if let Some(p_bucket) = existing_alias.state.get() {
+ if *p_bucket != bucket_id {
return Err(Error::BadRequest(format!(
"Alias {} already exists and points to different bucket: {:?}",
- alias_name, p.bucket_id
+ alias_name, p_bucket
)));
}
}
@@ -176,10 +176,10 @@ impl<'a> BucketHelper<'a> {
// writes are now done and all writes use timestamp alias_ts
let alias = match alias {
- None => BucketAlias::new(alias_name.clone(), alias_ts, bucket_id)
+ None => BucketAlias::new(alias_name.clone(), alias_ts, Some(bucket_id))
.ok_or_bad_request(format!("{}: {}", alias_name, INVALID_BUCKET_NAME_MESSAGE))?,
Some(mut a) => {
- a.state = Lww::raw(alias_ts, Deletable::present(AliasParams { bucket_id }));
+ a.state = Lww::raw(alias_ts, Some(bucket_id));
a
}
};
@@ -209,13 +209,7 @@ impl<'a> BucketHelper<'a> {
.bucket_alias_table
.get(&EmptyKey, alias_name)
.await?
- .filter(|a| {
- a.state
- .get()
- .as_option()
- .map(|x| x.bucket_id == bucket_id)
- .unwrap_or(false)
- })
+ .filter(|a| a.state.get().map(|x| x == bucket_id).unwrap_or(false))
.ok_or_message(format!(
"Internal error: alias not found or does not point to bucket {:?}",
bucket_id
@@ -244,7 +238,7 @@ impl<'a> BucketHelper<'a> {
// ---- timestamp-ensured causality barrier ----
// writes are now done and all writes use timestamp alias_ts
- alias.state = Lww::raw(alias_ts, Deletable::delete());
+ alias.state = Lww::raw(alias_ts, None);
self.0.bucket_alias_table.insert(&alias).await?;
bucket_state.aliases = LwwMap::raw_item(alias_name.clone(), alias_ts, false);
@@ -253,6 +247,51 @@ impl<'a> BucketHelper<'a> {
Ok(())
}
+ /// Ensures a bucket does not have a certain global alias.
+ /// Contrarily to unset_global_bucket_alias, this does not
+ /// fail on any condition other than:
+ /// - bucket cannot be found (its fine if it is in deleted state)
+ /// - alias cannot be found (its fine if it points to nothing or
+ /// to another bucket)
+ pub async fn purge_global_bucket_alias(
+ &self,
+ bucket_id: Uuid,
+ alias_name: &String,
+ ) -> Result<(), Error> {
+ let mut bucket = self.get_internal_bucket(bucket_id).await?;
+
+ let mut alias = self
+ .0
+ .bucket_alias_table
+ .get(&EmptyKey, alias_name)
+ .await?
+ .ok_or_message(format!("Alias {} not found", alias_name))?;
+
+ // Checks ok, remove alias
+ let alias_ts = match bucket.state.as_option() {
+ Some(bucket_state) => increment_logical_clock_2(
+ alias.state.timestamp(),
+ bucket_state.aliases.get_timestamp(alias_name),
+ ),
+ None => increment_logical_clock(alias.state.timestamp()),
+ };
+
+ // ---- timestamp-ensured causality barrier ----
+ // writes are now done and all writes use timestamp alias_ts
+
+ if alias.state.get() == &Some(bucket_id) {
+ alias.state = Lww::raw(alias_ts, None);
+ self.0.bucket_alias_table.insert(&alias).await?;
+ }
+
+ if let Some(mut bucket_state) = bucket.state.as_option_mut() {
+ bucket_state.aliases = LwwMap::raw_item(alias_name.clone(), alias_ts, false);
+ self.0.bucket_table.insert(&bucket).await?;
+ }
+
+ Ok(())
+ }
+
/// Sets a new alias for a bucket in the local namespace of a key.
/// This function fails if:
/// - alias name is not valid according to S3 spec
@@ -277,7 +316,7 @@ impl<'a> BucketHelper<'a> {
let mut key_param = key.state.as_option_mut().unwrap();
- if let Some(Deletable::Present(existing_alias)) = key_param.local_aliases.get(alias_name) {
+ if let Some(Some(existing_alias)) = key_param.local_aliases.get(alias_name) {
if *existing_alias != bucket_id {
return Err(Error::BadRequest(format!("Alias {} already exists in namespace of key {} and points to different bucket: {:?}", alias_name, key.key_id, existing_alias)));
}
@@ -301,8 +340,7 @@ impl<'a> BucketHelper<'a> {
// ---- timestamp-ensured causality barrier ----
// writes are now done and all writes use timestamp alias_ts
- key_param.local_aliases =
- LwwMap::raw_item(alias_name.clone(), alias_ts, Deletable::present(bucket_id));
+ key_param.local_aliases = LwwMap::raw_item(alias_name.clone(), alias_ts, Some(bucket_id));
self.0.key_table.insert(&key).await?;
bucket_p.local_aliases = LwwMap::raw_item(bucket_p_local_alias_key, alias_ts, true);
@@ -334,8 +372,8 @@ impl<'a> BucketHelper<'a> {
.unwrap()
.local_aliases
.get(alias_name)
- .map(|x| x.as_option())
- .flatten() != Some(&bucket_id)
+ .cloned()
+ .flatten() != Some(bucket_id)
{
return Err(GarageError::Message(format!(
"Bucket {:?} does not have alias {} in namespace of key {}",
@@ -372,8 +410,7 @@ impl<'a> BucketHelper<'a> {
// ---- timestamp-ensured causality barrier ----
// writes are now done and all writes use timestamp alias_ts
- key_param.local_aliases =
- LwwMap::raw_item(alias_name.clone(), alias_ts, Deletable::delete());
+ key_param.local_aliases = LwwMap::raw_item(alias_name.clone(), alias_ts, None);
self.0.key_table.insert(&key).await?;
bucket_p.local_aliases = LwwMap::raw_item(bucket_p_local_alias_key, alias_ts, false);
diff --git a/src/model/key_table.rs b/src/model/key_table.rs
index 7afa0337..c25f2da4 100644
--- a/src/model/key_table.rs
+++ b/src/model/key_table.rs
@@ -31,7 +31,7 @@ pub struct Key {
pub struct KeyParams {
pub allow_create_bucket: crdt::Lww<bool>,
pub authorized_buckets: crdt::Map<Uuid, BucketKeyPerm>,
- pub local_aliases: crdt::LwwMap<String, crdt::Deletable<Uuid>>,
+ pub local_aliases: crdt::LwwMap<String, Option<Uuid>>,
}
impl KeyParams {
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-20 16:53:19 +0000