Add SnapshotValidator

crates/iceberg/src/spec/snapshot.rs

@@ -36,7 +36,7 @@ pub const MAIN_BRANCH: &str = "main";
 
 /// Reference to [`Snapshot`].
 pub type SnapshotRef = Arc<Snapshot>;
-#[derive(Debug, Default, Serialize, Deserialize, PartialEq, Eq, Clone)]
+#[derive(Debug, Default, Serialize, Deserialize, PartialEq, Eq, Clone, Hash)]
 #[serde(rename_all = "lowercase")]
 /// The operation field is used by some operations, like snapshot expiration, to skip processing certain snapshots.
 pub enum Operation {

crates/iceberg/src/transaction/mod.rs

@@ -60,6 +60,7 @@ mod update_location;
 mod update_properties;
 mod update_statistics;
 mod upgrade_format_version;
+mod validate;
 
 use std::sync::Arc;
 use std::time::Duration;