Struct ResourceTraceAppender 

pub struct ResourceTraceAppender { /* private fields */ }

A second appender to the session’s trace.jsonl, used by the resource plane, by the peer plane’s listener, and by the peer-handoff tools in the agent loop.

[TraceWriter] is &mut-owned by the agent loop and cannot be shared, and a resource-plane event — a gateway reading a finished-but-alive capsule — can happen after session_end has already been written. So the plane gets its own appender rather than a borrow of the loop’s, and every event is written at the moment of the request rather than deferred to a task boundary: a denied read that only surfaced at the next task end would be a record of the wrong thing at the wrong time.

Interleaving is safe because every appender of the file writes through one shared crate::record_seal::InlineChain, which writes each line whole, chained to the one before.

Implementations

impl ResourceTraceAppender

pub async fn open( records_root: &WorkdirRoot, session_id: String, session_event_id: String, ) -> Result<Self>