refactor checkpoint

veilid-core/src/veilid_api/serialize_helpers.rs

@@ -113,3 +113,18 @@ pub mod opt_json_as_string {
         }
     }
 }
+
+pub mod arc_serialize {
+    use alloc::sync::Arc;
+    use serde::{Deserialize, Deserializer, Serialize, Serializer};
+
+    pub fn serialize<T: Serialize, S: Serializer>(v: &Arc<T>, s: S) -> Result<S::Ok, S::Error> {
+        T::serialize(v.as_ref(), s)
+    }
+
+    pub fn deserialize<'de, T: Deserialize<'de>, D: Deserializer<'de>>(
+        d: D,
+    ) -> Result<Arc<T>, D::Error> {
+        Ok(Arc::new(T::deserialize(d)?))
+    }
+}