Enum SpanKind 

#[repr(u8)]
pub enum SpanKind {
    Client = 0,
    Server = 1,
    Producer = 2,
    Consumer = 3,
    Internal = 4,
}

Describes the relationship between the Span, its parents, and its children in a trace.

Variants

Client = 0

Indicates that the span describes a request to some remote service. This span is usually the parent of a remote server span and does not end until the response is received.

Server = 1

Indicates that the span covers server-side handling of a synchronous RPC or other remote request. This span is often the child of a remote client span that was expected to wait for a response.

Producer = 2

Indicates that the span describes the initiators of an asynchronous request. This parent span will often end before the corresponding child consumer span, possibly even before the child span starts. In messaging scenarios with batching, tracing individual messages requires a new producer span per message to be created.

Consumer = 3

Indicates that the span describes a child of an asynchronous consumer request.

Internal = 4

Default value. Indicates that the span represents an internal operation within an application, as opposed to an operations with remote parents or children.

Trait Implementations

impl Clone for SpanKind

fn clone(&self) -> SpanKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SpanKind

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

Formats the value using the given formatter.

impl From<SpanKind> for SpanKind

fn from(kind: SpanKind) -> Self

Converts to this type from the input type.

impl PartialEq for SpanKind

fn eq(&self, other: &SpanKind) -> 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 ComponentType for SpanKind

impl Copy for SpanKind

impl Eq for SpanKind

impl Lift for SpanKind

impl Lower for SpanKind

impl StructuralPartialEq for SpanKind