Rename garage_core to garage_model

src/model/bucket_table.rs

@@ -0,0 +1,121 @@
+use async_trait::async_trait;
+use serde::{Deserialize, Serialize};
+
+use garage_table::*;
+use garage_util::error::Error;
+
+#[derive(PartialEq, Clone, Debug, Serialize, Deserialize)]
+pub struct Bucket {
+	// Primary key
+	pub name: String,
+
+	// Timestamp and deletion
+	// Upon version increment, all info is replaced
+	pub timestamp: u64,
+	pub deleted: bool,
+
+	// Authorized keys
+	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.key_id.cmp(&key.key_id))
+		{
+			Err(i) => {
+				self.authorized_keys.insert(i, key);
+				Ok(())
+			}
+			Ok(_) => Err(()),
+		}
+	}
+	pub fn authorized_keys(&self) -> &[AllowedKey] {
+		&self.authorized_keys[..]
+	}
+	pub fn clear_keys(&mut self) {
+		self.authorized_keys.clear();
+	}
+}
+
+#[derive(PartialEq, Clone, Debug, Serialize, Deserialize)]
+pub struct AllowedKey {
+	pub key_id: String,
+	pub timestamp: u64,
+	pub allow_read: bool,
+	pub allow_write: bool,
+}
+
+impl Entry<EmptyKey, String> for Bucket {
+	fn partition_key(&self) -> &EmptyKey {
+		&EmptyKey
+	}
+	fn sort_key(&self) -> &String {
+		&self.name
+	}
+
+	fn merge(&mut self, other: &Self) {
+		if other.timestamp < self.timestamp {
+			*self = other.clone();
+			return;
+		}
+		if self.timestamp > other.timestamp || self.deleted {
+			return;
+		}
+
+		for ak in other.authorized_keys.iter() {
+			match self
+				.authorized_keys
+				.binary_search_by(|our_ak| our_ak.key_id.cmp(&ak.key_id))
+			{
+				Ok(i) => {
+					let our_ak = &mut self.authorized_keys[i];
+					if ak.timestamp > our_ak.timestamp {
+						*our_ak = ak.clone();
+					}
+				}
+				Err(i) => {
+					self.authorized_keys.insert(i, ak.clone());
+				}
+			}
+		}
+	}
+}
+
+pub struct BucketTable;
+
+#[async_trait]
+impl TableSchema for BucketTable {
+	type P = EmptyKey;
+	type S = String;
+	type E = Bucket;
+	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
+	}
+}