1 files changed, 17 insertions, 0 deletions
diff --git a/crates/common/batcher/src/batchable.rs b/crates/common/batcher/src/batchable.rs
new file mode 100644
index 00000000..3585fc2f
--- /dev/null
+++ b/crates/common/batcher/src/batchable.rs
@@ -0,0 +1,17 @@
+use chrono::{DateTime, Utc};
+use std::fmt::Debug;
+use std::hash::Hash;
+
+/// Implement this interface for the items that you want batched.
+/// No items with the same key will go in the same batch.
+/// The event_time of the item will determine how items are grouped,
+/// dependent on how the batcher is configured.
+pub trait Batchable {
+    type Key: Eq + Hash + Debug;
+
+    /// Define the uniqueness within a batch.
+    fn key(&self) -> Self::Key;
+
+    /// The time at which this item was created. This time is used to group items into a batch.
+    fn event_time(&self) -> DateTime<Utc>;
+}