swarm: changes taken unjudged, dropped (REFUSALS)

A node refusing changes a peer brought tells it which broke a rule; the
peer judges them itself, and if its rules refuse them too, drops them
with all built on them (its document forked without them, a fresh
actor), quarantining its own writes among them. Wire version 42.

Auth plan M6 (rejoin on taint).

1 files changed, 17 insertions, 0 deletions

diff --git a/src/remake/mod.rs b/src/remake/mod.rs
index 342eab3..840322a 100644
--- a/src/remake/mod.rs
+++ b/src/remake/mod.rs
@@ -39,6 +39,23 @@ mod vote;
 
 #[cfg(test)]
 pub(crate) use api::testing;
+
+/// Quarantines `paths` of `document` (of `epoch`): this node's writes on a change the
+/// swarm's rules refuse, which it took unjudged and has dropped since
+/// (`AppState::drop_taken`). The quarantine's id, if any.
+pub(crate) fn quarantine_taken<H: Host>(
+    host: &H,
+    epoch: crate::document::replica::Epoch,
+    document: &crate::document::Document,
+    paths: Vec<Vec<String>>,
+) -> Option<String> {
+    let reason = "written on a change the swarm's rules refuse, which this node took unjudged";
+    let quarantined = paths
+        .into_iter()
+        .map(|path| (path, reason.to_owned()))
+        .collect();
+    quarantine::add(host, epoch, epoch, document, quarantined)
+}
 pub(crate) use delta::Superseded;
 pub(crate) use kind::remake_genesis;
 pub(crate) use local::RemakeState;