electorate window must be at least 7d

1 files changed, 8 insertions, 1 deletions

diff --git a/src/swarm/members.rs b/src/swarm/members.rs
index 6be523c..098c767 100644
--- a/src/swarm/members.rs
+++ b/src/swarm/members.rs
@@ -229,9 +229,16 @@ pub(crate) fn electorate(doc: &impl ReadDoc, now_ms: u64, window: Duration) -> V
 /// drops out of the electorate (a seventh of the window), but at most hourly and at
 /// least daily, so idle swarms stay quiet.
 fn alive_renewal(window: Duration) -> Duration {
-    (window / 7).clamp(Duration::from_secs(3600), Duration::from_secs(24 * 3600))
+    (window / 7).clamp(RENEWAL_MOST_OFTEN, Duration::from_secs(24 * 3600))
 }
 
+const RENEWAL_MOST_OFTEN: Duration = Duration::from_secs(3600);
+
+/// The shortest `--electorate-window`: seven renewals at most often, so a live node
+/// renews within a seventh of it, as with any longer one.
+pub(crate) const MIN_ELECTORATE_WINDOW: Duration =
+    Duration::from_secs(7 * RENEWAL_MOST_OFTEN.as_secs());
+
 /// Registers this node if it is ready and its entry is missing, keeps its alias as
 /// configured (set, changed or removed after a restart with another `--alias`) and its
 /// addresses as the transport gives them, and renews its `alive` stamp now and then