Include code from v0.5.1 directly to remove dependencies

src/model/prev/v051/key_table.rs

@@ -0,0 +1,51 @@
+use serde::{Deserialize, Serialize};
+
+use garage_table::crdt::*;
+use garage_table::*;
+
+/// An api key
+#[derive(PartialEq, Clone, Debug, Serialize, Deserialize)]
+pub struct Key {
+	/// The id of the key (immutable), used as partition key
+	pub key_id: String,
+
+	/// The secret_key associated
+	pub secret_key: String,
+
+	/// Name for the key
+	pub name: crdt::Lww<String>,
+
+	/// Is the key deleted
+	pub deleted: crdt::Bool,
+
+	/// Buckets in which the key is authorized. Empty if `Key` is deleted
+	// CRDT interaction: deleted implies authorized_buckets is empty
+	pub authorized_buckets: crdt::LwwMap<String, PermissionSet>,
+}
+
+/// Permission given to a key in a bucket
+#[derive(PartialOrd, Ord, PartialEq, Eq, Clone, Debug, Serialize, Deserialize)]
+pub struct PermissionSet {
+	/// The key can be used to read the bucket
+	pub allow_read: bool,
+	/// The key can be used to write in the bucket
+	pub allow_write: bool,
+}
+
+impl AutoCrdt for PermissionSet {
+	const WARN_IF_DIFFERENT: bool = true;
+}
+
+impl Crdt for Key {
+	fn merge(&mut self, other: &Self) {
+		self.name.merge(&other.name);
+		self.deleted.merge(&other.deleted);
+
+		if self.deleted.get() {
+			self.authorized_buckets.clear();
+		} else {
+			self.authorized_buckets.merge(&other.authorized_buckets);
+		}
+	}
+}
+