Enum Decoded 

pub enum Decoded<E: AppEvent> {
    Filter,
    Permitted {
        request_seq: u64,
        event: E,
    },
    PermissionDenied(&'static str),
    DecodeError(&'static str),
}

Outcome of a single RequestDecoder::decode call. The runtime branches on this and never needs to know the underlying wire enum.

Variants

Filter

Drop the frame silently. Used for transport-level messages (heartbeats, post-auth handshakes, subscription control) that the runtime never publishes to the pipeline.

Permitted

Frame OK and authorized. Caller publishes event with the per-key sequence request_seq. Whether the event needs a timestamp is derived by the runtime from AppEvent::is_query — query events bypass the journal and skip the wall-clock stamp.

Fields

request_seq: u64

Per-key idempotency sequence carried in the wire frame.

event: E

Decoded application event.

PermissionDenied(&'static str)

Authenticated connection lacks the permission level for this operation. The static string is logged at debug level on the reader thread; the runtime drops the frame.

DecodeError(&'static str)

Wire-level decode failure (malformed length, unknown variant tag, invalid field). The runtime logs at debug level and drops the frame; the connection is not closed (a misbehaving client drops itself on the next read timeout).