Make table objects slightly more fool-proof; add key table

5 files changed, 239 insertions, 14 deletions

diff --git a/src/store/bucket_table.rs b/src/store/bucket_table.rs
index 5604049c..7778b8f9 100644
--- a/src/store/bucket_table.rs
+++ b/src/store/bucket_table.rs
@@ -15,7 +15,44 @@ pub struct Bucket {
 	pub deleted: bool,
 
 	// Authorized keys
-	pub authorized_keys: Vec<AllowedKey>,
+	authorized_keys: Vec<AllowedKey>,
+}
+
+impl Bucket {
+	pub fn new(
+		name: String,
+		timestamp: u64,
+		deleted: bool,
+		authorized_keys: Vec<AllowedKey>,
+	) -> Self {
+		let mut ret = Bucket {
+			name,
+			timestamp,
+			deleted,
+			authorized_keys: vec![],
+		};
+		for key in authorized_keys {
+			ret.add_key(key)
+				.expect("Duplicate AllowedKey in Bucket constructor");
+		}
+		ret
+	}
+	/// Add a key only if it is not already present
+	pub fn add_key(&mut self, key: AllowedKey) -> Result<(), ()> {
+		match self
+			.authorized_keys
+			.binary_search_by(|k| k.access_key_id.cmp(&key.access_key_id))
+		{
+			Err(i) => {
+				self.authorized_keys.insert(i, key);
+				Ok(())
+			}
+			Ok(_) => Err(()),
+		}
+	}
+	pub fn authorized_keys(&self) -> &[AllowedKey] {
+		&self.authorized_keys[..]
+	}
 }
 
 #[derive(PartialEq, Clone, Debug, Serialize, Deserialize)]
@@ -39,9 +76,10 @@ impl Entry<EmptyKey, String> for Bucket {
 			*self = other.clone();
 			return;
 		}
-		if self.timestamp > other.timestamp {
+		if self.timestamp > other.timestamp || self.deleted {
 			return;
 		}
+
 		for ak in other.authorized_keys.iter() {
 			match self
 				.authorized_keys
@@ -50,9 +88,7 @@ impl Entry<EmptyKey, String> for Bucket {
 				Ok(i) => {
 					let our_ak = &mut self.authorized_keys[i];
 					if ak.timestamp > our_ak.timestamp {
-						our_ak.timestamp = ak.timestamp;
-						our_ak.allowed_read = ak.allowed_read;
-						our_ak.allowed_write = ak.allowed_write;
+						*our_ak = ak.clone();
 					}
 				}
 				Err(i) => {
diff --git a/src/store/key_table.rs b/src/store/key_table.rs
new file mode 100644
index 00000000..7476622f
--- /dev/null
+++ b/src/store/key_table.rs
@@ -0,0 +1,121 @@
+use async_trait::async_trait;
+use serde::{Deserialize, Serialize};
+
+use crate::error::Error;
+use crate::table::*;
+
+#[derive(PartialEq, Clone, Debug, Serialize, Deserialize)]
+pub struct Key {
+	// Primary key
+	pub access_key_id: String,
+
+	// Associated secret key (immutable)
+	pub secret_access_key: String,
+
+	// Deletion
+	pub deleted: bool,
+
+	// Authorized keys
+	authorized_buckets: Vec<AllowedBucket>,
+}
+
+impl Key {
+	pub fn new(buckets: Vec<AllowedBucket>) -> Self {
+		let access_key_id = format!("GK{}", hex::encode(&rand::random::<[u8; 12]>()[..]));
+		let secret_access_key = hex::encode(&rand::random::<[u8; 32]>()[..]);
+		let mut ret = Self {
+			access_key_id,
+			secret_access_key,
+			deleted: false,
+			authorized_buckets: vec![],
+		};
+		for b in buckets {
+			ret.add_bucket(b);
+		}
+		ret
+	}
+	pub fn delete(access_key_id: String, secret_access_key: String) -> Self {
+		Self {
+			access_key_id,
+			secret_access_key,
+			deleted: true,
+			authorized_buckets: vec![],
+		}
+	}
+	/// Add an authorized bucket, only if it wasn't there before
+	pub fn add_bucket(&mut self, new: AllowedBucket) -> Result<(), ()> {
+		match self
+			.authorized_buckets
+			.binary_search_by(|b| b.bucket.cmp(&new.bucket))
+		{
+			Err(i) => {
+				self.authorized_buckets.insert(i, new);
+				Ok(())
+			}
+			Ok(_) => Err(()),
+		}
+	}
+	pub fn authorized_buckets(&self) -> &[AllowedBucket] {
+		&self.authorized_buckets[..]
+	}
+}
+
+#[derive(PartialEq, Clone, Debug, Serialize, Deserialize)]
+pub struct AllowedBucket {
+	pub bucket: String,
+	pub timestamp: u64,
+	pub allowed_read: bool,
+	pub allowed_write: bool,
+}
+
+impl Entry<EmptyKey, String> for Key {
+	fn partition_key(&self) -> &EmptyKey {
+		&EmptyKey
+	}
+	fn sort_key(&self) -> &String {
+		&self.access_key_id
+	}
+
+	fn merge(&mut self, other: &Self) {
+		if other.deleted {
+			self.deleted = true;
+			self.authorized_buckets.clear();
+			return;
+		}
+
+		for ab in other.authorized_buckets.iter() {
+			match self
+				.authorized_buckets
+				.binary_search_by(|our_ab| our_ab.bucket.cmp(&ab.bucket))
+			{
+				Ok(i) => {
+					let our_ab = &mut self.authorized_buckets[i];
+					if ab.timestamp > our_ab.timestamp {
+						*our_ab = ab.clone();
+					}
+				}
+				Err(i) => {
+					self.authorized_buckets.insert(i, ab.clone());
+				}
+			}
+		}
+	}
+}
+
+pub struct KeyTable;
+
+#[async_trait]
+impl TableSchema for KeyTable {
+	type P = EmptyKey;
+	type S = String;
+	type E = Key;
+	type Filter = ();
+
+	async fn updated(&self, _old: Option<Self::E>, _new: Option<Self::E>) -> Result<(), Error> {
+		Ok(())
+	}
+
+	fn matches_filter(entry: &Self::E, _filter: &Self::Filter) -> bool {
+		!entry.deleted
+	}
+}
diff --git a/src/store/mod.rs b/src/store/mod.rs
index afadc9bb..b6a8dc46 100644
--- a/src/store/mod.rs
+++ b/src/store/mod.rs
@@ -1,5 +1,6 @@
 pub mod block;
 pub mod block_ref_table;
 pub mod bucket_table;
+pub mod key_table;
 pub mod object_table;
 pub mod version_table;
diff --git a/src/store/object_table.rs b/src/store/object_table.rs
index 97de0cdb..f329a7f4 100644
--- a/src/store/object_table.rs
+++ b/src/store/object_table.rs
@@ -20,7 +20,38 @@ pub struct Object {
 	pub key: String,
 
 	// Data
-	pub versions: Vec<Box<ObjectVersion>>,
+	versions: Vec<ObjectVersion>,
+}
+
+impl Object {
+	pub fn new(bucket: String, key: String, versions: Vec<ObjectVersion>) -> Self {
+		let mut ret = Self {
+			bucket,
+			key,
+			versions: vec![],
+		};
+		for v in versions {
+			ret.add_version(v)
+				.expect("Twice the same ObjectVersion in Object constructor");
+		}
+		ret
+	}
+	/// Adds a version if it wasn't already present
+	pub fn add_version(&mut self, new: ObjectVersion) -> Result<(), ()> {
+		match self
+			.versions
+			.binary_search_by(|v| v.cmp_key().cmp(&new.cmp_key()))
+		{
+			Err(i) => {
+				self.versions.insert(i, new);
+				Ok(())
+			}
+			Ok(_) => Err(()),
+		}
+	}
+	pub fn versions(&self) -> &[ObjectVersion] {
+		&self.versions[..]
+	}
 }
 
 #[derive(PartialEq, Clone, Debug, Serialize, Deserialize)]
@@ -113,13 +144,13 @@ impl TableSchema for ObjectTable {
 					.binary_search_by(|nv| nv.cmp_key().cmp(&v.cmp_key()))
 					.is_err()
 				{
-					let deleted_version = Version {
-						uuid: v.uuid,
-						deleted: true,
-						blocks: vec![],
-						bucket: old_v.bucket.clone(),
-						key: old_v.key.clone(),
-					};
+					let deleted_version = Version::new(
+						v.uuid,
+						old_v.bucket.clone(),
+						old_v.key.clone(),
+						true,
+						vec![],
+					);
 					version_table.insert(&deleted_version).await?;
 				}
 			}
diff --git a/src/store/version_table.rs b/src/store/version_table.rs
index d25a56ca..6d304cda 100644
--- a/src/store/version_table.rs
+++ b/src/store/version_table.rs
@@ -18,7 +18,7 @@ pub struct Version {
 
 	// Actual data: the blocks for this version
 	pub deleted: bool,
-	pub blocks: Vec<VersionBlock>,
+	blocks: Vec<VersionBlock>,
 
 	// Back link to bucket+key so that we can figure if
 	// this was deleted later on
@@ -26,6 +26,42 @@ pub struct Version {
 	pub key: String,
 }
 
+impl Version {
+	pub fn new(
+		uuid: UUID,
+		bucket: String,
+		key: String,
+		deleted: bool,
+		blocks: Vec<VersionBlock>,
+	) -> Self {
+		let mut ret = Self {
+			uuid,
+			deleted,
+			blocks: vec![],
+			bucket,
+			key,
+		};
+		for b in blocks {
+			ret.add_block(b)
+				.expect("Twice the same VersionBlock in Version constructor");
+		}
+		ret
+	}
+	/// Adds a block if it wasn't already present
+	pub fn add_block(&mut self, new: VersionBlock) -> Result<(), ()> {
+		match self.blocks.binary_search_by(|b| b.offset.cmp(&new.offset)) {
+			Err(i) => {
+				self.blocks.insert(i, new);
+				Ok(())
+			}
+			Ok(_) => Err(()),
+		}
+	}
+	pub fn blocks(&self) -> &[VersionBlock] {
+		&self.blocks[..]
+	}
+}
+
 #[derive(PartialEq, Clone, Debug, Serialize, Deserialize)]
 pub struct VersionBlock {
 	pub offset: u64,