Enum BuiltinKind 

pub enum BuiltinKind {
    SelfContained,
    RequiresHandler,
}

How a built-in function reaches an implementation.

This is the programmatic form of the distinction docs/src/built-in-functions/integrations.md draws in prose: some built-ins this crate executes itself, and for others it only supplies a config schema.

Deliberately not #[non_exhaustive]. A caller matching on this is usually deciding whether to accept a workflow definition, and if a third kind is ever added that decision needs revisiting — a compile error at every match site is the correct signal, not a silent fall-through to a _ arm.

Variants

SelfContained

Executed by this crate. Needs no registration; an engine can always run it.

RequiresHandler

Deserializes into a typed built-in variant — so Engine::new accepts it without complaint — but dispatches to a handler registered under the same name, and fails with crate::DataflowError::FunctionNotFound on the first message if none is registered.

http_call, enrich and publish_kafka are these. A validator that treats them like BuiltinKind::SelfContained will green-light a workflow that builds cleanly and then fails every request.

Trait Implementations

impl Clone for BuiltinKind

fn clone(&self) -> BuiltinKind

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for BuiltinKind

impl Debug for BuiltinKind

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for BuiltinKind

impl PartialEq for BuiltinKind

fn eq(&self, other: &BuiltinKind) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for BuiltinKind