add document lock stats

1 files changed, 4 insertions, 0 deletions

diff --git a/src/api/stats.rs b/src/api/stats.rs
index 45d91da..07521ab 100644
--- a/src/api/stats.rs
+++ b/src/api/stats.rs
@@ -96,6 +96,9 @@ struct DocumentStats {
     saved_bytes_secs_ago: Option<u64>,
     /// How long the last measurement took (copy and save), in milliseconds.
     saved_bytes_took_ms: Option<u64>,
+    /// How long takers of the document's lock waited for it, since start: the node's
+    /// work on the one document queues there.
+    lock_wait: crate::document::lock::LockWaits,
 }
 
 #[derive(Debug, Serialize)]
@@ -245,6 +248,7 @@ async fn collect(state: &AppState) -> StatsResponse {
             saved_bytes: saved.map(|s| s.bytes),
             saved_bytes_secs_ago: saved.map(|s| s.at.elapsed().as_secs()),
             saved_bytes_took_ms: saved.map(|s| s.took.as_millis() as u64),
+            lock_wait: state.doc.waits(),
         },
         catch_up: CatchUpStats {
             sources: node.catch_up_sources,