document: reject writes during rejoin

1 files changed, 4 insertions, 0 deletions

diff --git a/src/document/store.rs b/src/document/store.rs
index 0a3c8ad..45d46cd 100644
--- a/src/document/store.rs
+++ b/src/document/store.rs
@@ -94,6 +94,10 @@ pub(crate) enum StoreError {
     /// An index past a list's end (`length` items).
     #[error("index {index} is past the list's end ({length} items)")]
     PastTheEnd { index: usize, length: usize },
+    /// The node is rejoining a newer epoch: no writes until it is done
+    /// (`Replica::writable`).
+    #[error("the node is rejoining a newer epoch; writes are refused until it is done")]
+    Rejoining,
     #[error(transparent)]
     Doc(#[from] automerge::AutomergeError),
     #[error(transparent)]