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feat: make Python UDF wire-format family prefixes public #1818

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feat: make Python UDF wire-format family prefixes public #1818

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18 changes: 15 additions & 3 deletions crates/core/src/codec.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -143,18 +143,30 @@ use crate::udwf::PythonFunctionWindowUDF;
/// Family prefix for an inlined Python scalar UDF
/// (cloudpickled tuple of name, callable, input schema, return field,
/// volatility).
pub(crate) const PY_SCALAR_UDF_FAMILY: &[u8] = b"DFPYUDF";
///
/// Public wire-format family registry entry for downstream consumers
/// (e.g. Ballista's Python client) that need to recognise inline
/// Python UDF payloads without duplicating these magic bytes.
pub const PY_SCALAR_UDF_FAMILY: &[u8] = b"DFPYUDF";

/// Family prefix for an inlined Python aggregate UDF
/// (cloudpickled tuple of name, accumulator factory, input schema bytes,
/// return schema bytes (single-field IPC schema), state schema bytes,
/// volatility).
pub(crate) const PY_AGG_UDF_FAMILY: &[u8] = b"DFPYUDA";
///
/// Public wire-format family registry entry for downstream consumers
/// (e.g. Ballista's Python client) that need to recognise inline
/// Python UDF payloads without duplicating these magic bytes.
pub const PY_AGG_UDF_FAMILY: &[u8] = b"DFPYUDA";

/// Family prefix for an inlined Python window UDF
/// (cloudpickled tuple of name, evaluator factory, input schema bytes,
/// return schema bytes (single-field IPC schema), volatility).
pub(crate) const PY_WINDOW_UDF_FAMILY: &[u8] = b"DFPYUDW";
///
/// Public wire-format family registry entry for downstream consumers
/// (e.g. Ballista's Python client) that need to recognise inline
/// Python UDF payloads without duplicating these magic bytes.
pub const PY_WINDOW_UDF_FAMILY: &[u8] = b"DFPYUDW";

/// Wire-format version this build emits.
pub(crate) const WIRE_VERSION_CURRENT: u8 = 1;
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