1 files changed, 46 insertions, 0 deletions
diff --git a/crates/fidget-spinner-core/src/id.rs b/crates/fidget-spinner-core/src/id.rs
new file mode 100644
index 0000000..ea2cd5a
--- /dev/null
+++ b/crates/fidget-spinner-core/src/id.rs
@@ -0,0 +1,46 @@
+use std::fmt::{self, Display, Formatter};
+
+use serde::{Deserialize, Serialize};
+use uuid::Uuid;
+
+macro_rules! define_id {
+    ($name:ident) => {
+        #[derive(
+            Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize,
+        )]
+        #[serde(transparent)]
+        pub struct $name(Uuid);
+
+        impl $name {
+            #[must_use]
+            pub fn fresh() -> Self {
+                Self(Uuid::now_v7())
+            }
+
+            #[must_use]
+            pub fn from_uuid(uuid: Uuid) -> Self {
+                Self(uuid)
+            }
+
+            #[must_use]
+            pub fn as_uuid(self) -> Uuid {
+                self.0
+            }
+        }
+
+        impl Display for $name {
+            fn fmt(&self, formatter: &mut Formatter<'_>) -> fmt::Result {
+                Display::fmt(&self.0, formatter)
+            }
+        }
+    };
+}
+
+define_id!(AgentSessionId);
+define_id!(AnnotationId);
+define_id!(ArtifactId);
+define_id!(CheckpointId);
+define_id!(ExperimentId);
+define_id!(FrontierId);
+define_id!(NodeId);
+define_id!(RunId);