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encode_standby_status

laminar_connectors::cdc::postgres::postgres_io

Function encode_standby_status 

Source 
pub fn encode_standby_status(
    write_lsn: Lsn,
    flush_lsn: Lsn,
    apply_lsn: Lsn,
) -> Vec<u8> ⓘ
Expand description

Encodes a standby status update message.

Returns the 34-byte message suitable for sending via CopyData.

§Wire Format

Byte  0:       'r' (0x72) — StandbyStatusUpdate tag
Bytes 1-8:     write LSN (last WAL position received)
Bytes 9-16:    flush LSN (last WAL position flushed to disk)
Bytes 17-24:   apply LSN (last WAL position applied)
Bytes 25-32:   client timestamp (microseconds since 2000-01-01)
Byte  33:      reply requested (always 0 from client)