Enum NodeKind 

#[non_exhaustive]
pub enum NodeKind {
    Source,
    Process,
    Model,
    Split,
    Join,
    Sink,
    External,
}

Categories of nodes used in graph descriptors and builders.

These capture the high-level role of a node in the dataflow graph.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Source

A source node: 0 inputs / ≥1 outputs.

Examples: sensors, file readers, external ingress points.

Process

A processing node: ≥1 inputs / ≥1 outputs.

Examples: stateless transforms, stateful operators, pre/post-processing.

Model

A model node: ≥1 inputs / ≥1 outputs.

Represents inference nodes bound to a ComputeBackend and a model.

Split

A split (fan-out) node: ≥1 inputs / ≥2 outputs.

Used to branch one stream into multiple downstream paths.

Join

A join (fan-in) node: ≥2 inputs / ≥1 outputs.

Used to merge multiple streams into a single downstream path.

Sink

A sink node: ≥1 inputs / 0 outputs.

Examples: file writers, stdout, GPIO, MQTT, other terminal sinks.

External

An external node: request/response via transport to a remote or coprocessor.

Trait Implementations

impl Clone for NodeKind

fn clone(&self) -> NodeKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for NodeKind

impl Debug for NodeKind

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

Formats the value using the given formatter.

impl Eq for NodeKind

impl PartialEq for NodeKind

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for NodeKind