Method to_msgpack

nodedb/src/engine/graph/algo/result.rs:158–162

Serialize the result batch as MessagePack bytes. Writes directly to MessagePack without building intermediate `serde_json::Value` objects. The Control Plane converts to JSON via `decode_payload_to_json()` for pgwire/REST responses. Format: msgpack array of maps, e.g. `[{"node_id": "alice", "rank": 0.42}, ...]`.

(&self)

    ///
    /// Format: msgpack array of maps, e.g. `[{"node_id": "alice", "rank": 0.42}, ...]`.
    pub fn to_msgpack(&self) -> Result<Vec<u8>, crate::Error> {
        zerompk::to_msgpack_vec(self).map_err(|e| crate::Error::Internal {
            detail: format!("msgpack serialization: {e}"),
        })
    }

    /// Serialize the result batch as JSON (for pgwire/REST response).
    ///