Method remove_if_current

crates/openshell-server/src/supervisor_session.rs:157–166

Remove the session only if its `session_id` matches the one we are cleaning up. Returns `true` if the entry was removed. This guards against the supersede race: an old session's task may finish long after a new session has taken its place. The old task's cleanup must not evict the new registration.

(&self, sandbox_id: &str, session_id: &str)

    /// finish long after a new session has taken its place. The old task's
    /// cleanup must not evict the new registration.
    fn remove_if_current(&self, sandbox_id: &str, session_id: &str) -> bool {
        let mut sessions = self.sessions.lock().unwrap();
        let is_current = sessions
            .get(sandbox_id)
            .is_some_and(|s| s.session_id == session_id);
        if is_current {
            sessions.remove(sandbox_id);
        }
        is_current
    }

    /// Look up the sender for a supervisor session, waiting up to `timeout`
    /// for it to appear if absent.