1 files changed, 12 insertions, 0 deletions
diff --git a/src/config/mod.rs b/src/config/mod.rs
index 7df68e7..c0abc09 100644
--- a/src/config/mod.rs
+++ b/src/config/mod.rs
@@ -264,6 +264,13 @@ pub(crate) const OPTIONS: &[OptionSpec] = &[
         "This node's document on disk. Read at start: the node resumes with it, ready at once. Kept up to date while ready: changes are appended every --document-append, and the file is rewritten after a switch, a rejoin or a restart, and when the appended changes outgrew it.",
     ),
     option(
+        "keep-actor",
+        Kind::Flag,
+        "BOOL",
+        Some("false"),
+        "Resume writing as the actor this node wrote with before it stopped, if it stopped cleanly (its document file holds everything it wrote then), instead of a fresh one: an epoch then gathers a writer per node and per crash or drop rather than per start, which every transfer of its history carries a signature for. Needs document-file.",
+    ),
+    option(
         "document-append",
         Kind::Duration,
         "DURATION",
@@ -654,6 +661,8 @@ pub(crate) struct Settings {
     pub(crate) genesis: bool,
     pub(crate) state_file: Option<PathBuf>,
     pub(crate) document_file: Option<PathBuf>,
+    #[serde(default)]
+    pub(crate) keep_actor: bool,
     #[serde(
         default = "default_document_append",
         with = "crate::units::duration_option"
@@ -982,6 +991,9 @@ impl Settings {
         if self.document_append.is_zero() || self.document_rewrite.is_zero() {
             bail!("document-append and document-rewrite must be longer than 0");
         }
+        if self.keep_actor && self.document_file.is_none() {
+            bail!("keep-actor needs document-file: it tells whether this node stopped cleanly");
+        }
         if self.keepalive < Duration::from_millis(100) {
             bail!("keepalive must be at least 100ms");
         }