Function json_to_msgpack

nodedb/src/data/executor/doc_format.rs:88–104

Convert JSON bytes to MessagePack bytes. If the input is already MessagePack, returns it unchanged. Handles three input formats: - Standard msgpack map (0x80–0x8F / 0xDE / 0xDF): returned as-is. - JSON bytes: parsed and re-encoded as standard msgpack map. - Unknown bytes: returned as-is.

(bytes: &[u8])

/// - JSON bytes: parsed and re-encoded as standard msgpack map.
/// - Unknown bytes: returned as-is.
pub(super) fn json_to_msgpack(bytes: &[u8]) -> Vec<u8> {
    if bytes.is_empty() {
        return bytes.to_vec();
    }

    // Already a standard MessagePack map? Return as-is.
    let first = bytes[0];
    if (0x80..=0x8F).contains(&first) || first == 0xDE || first == 0xDF {
        return bytes.to_vec();
    }

    // Try parsing as JSON and converting to MessagePack.
    match sonic_rs::from_slice::<serde_json::Value>(bytes) {
        Ok(value) => encode_to_msgpack(&value),
        Err(_) => bytes.to_vec(),
    }
}

fn is_standard_msgpack_map(bytes: &[u8]) -> bool {
    let first = bytes[0];