document: allow writes during rejoin

1 files changed, 5 insertions, 0 deletions

diff --git a/src/document/file.rs b/src/document/file.rs
index 9efae42..3ea3afd 100644
--- a/src/document/file.rs
+++ b/src/document/file.rs
@@ -197,6 +197,11 @@ impl DocumentFile {
 
     /// What is due for a document of `epoch` at `heads`, written by this node's `actors`
     /// (see the module docs).
+    /// How many of this node's actors the file holds; None before it was written.
+    pub(crate) fn actors(&self) -> Option<usize> {
+        self.lock().as_ref().map(|written| written.actors)
+    }
+
     pub(crate) fn due(&self, epoch: Epoch, actors: usize, heads: &[ChangeHash]) -> Due {
         let written = self.lock().clone();
         let reason = match &written {