Struct Causality 

pub struct Causality {
    pub trace_id: Uuid,
    pub span_id: u64,
    pub parent_span_id: Option<u64>,
    pub parent_event_ids: Vec<EventId>,
    pub root_event_id: EventId,
}

W3C Trace Context compatible distributed tracing.

Provides full causality tracking for events across distributed systems. Compatible with OpenTelemetry and other distributed tracing systems.

Fields

trace_id: Uuid

Stable trace ID across request lifecycle (W3C compatible)

span_id: u64

Current operation span ID

parent_span_id: Option<u64>

Parent span (if not root)

parent_event_ids: Vec<EventId>

Parent event IDs for causality fan-in (multiple parents)

root_event_id: EventId

Root event of this trace tree

Implementations

impl Causality

pub fn new() -> Self

Create a new causality context with a fresh trace.

pub fn child(&self, new_span_id: u64) -> Self

Create a child span from this causality context.

pub fn merge(parents: &[&Causality], new_span_id: u64) -> Option<Self>

Create a causality context with multiple parents (fan-in).

Trait Implementations

impl Clone for Causality

fn clone(&self) -> Causality

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl ComposeSchema for Causality

fn compose(generics: Vec<RefOr<Schema>>) -> RefOr<Schema>

impl Debug for Causality

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

Formats the value using the given formatter.

impl Default for Causality

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Causality

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Causality

fn eq(&self, other: &Causality) -> 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 Serialize for Causality

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl ToSchema for Causality

fn name() -> Cow<'static, str>

Return name of the schema.

fn schemas(schemas: &mut Vec<(String, RefOr<Schema>)>)

Implement reference [utoipa::openapi::schema::Schema]s for this type.

impl Eq for Causality

impl StructuralPartialEq for Causality