Module remote 

Remote UDF execution over Arrow Flight.

Registration is driven by a TOML manifest describing one or more services, each exposing one or more functions:

• manifest: parse and validate the manifest (transports, limits, types).
• transport: mTLS / sidecar connections and the bounded DoExchange call.
• udf_impl: the udf_impl::RemoteUdf async scalar UDF.
• validate: response containment checks and the circuit breaker.
• observability: per-function metrics (exported) and audit logging.
• bridge: the arrow-58 ↔ arrow-59 RecordBatch bridge.

Modules

bridge

Arrow ↔ DataFusion RecordBatch bridge for the remote UDF layer.

manifest

Remote UDF manifest parsing and validation.

observability

Observability for remote UDFs: per-service/function metrics and audit logging.

transport

Transport layer for remote UDFs via Arrow Flight.

udf_impl

Remote UDF implementation via Arrow Flight.

validate

Response validation and the per-service circuit breaker.

Enums

RemoteError

A failure anywhere on the remote call path.

Functions

register_remote_udfs

Register remote UDFs from a manifest file, recording metrics into metrics.