Struct EventMetadata 

pub struct EventMetadata {
    pub causation_id: Option<EventId>,
    pub correlation_id: Option<EventId>,
    pub user_id: Option<String>,
    pub headers: HashMap<String, String>,
}

Metadata associated with events for tracing, correlation, and context.

EventMetadata provides essential context for event processing:

• Causation and correlation IDs for distributed tracing
• User context for audit trails
• Custom headers for additional context

Example

use eventuali_core::EventMetadata;
use uuid::Uuid;
use std::collections::HashMap;

let mut metadata = EventMetadata::default();
metadata.user_id = Some("user-123".to_string());
metadata.correlation_id = Some(Uuid::new_v4());
metadata.headers.insert("source".to_string(), "web-app".to_string());

Fields

causation_id: Option<EventId>

correlation_id: Option<EventId>

user_id: Option<String>

headers: HashMap<String, String>

Trait Implementations

impl Clone for EventMetadata

fn clone(&self) -> EventMetadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EventMetadata

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

Formats the value using the given formatter.

impl Default for EventMetadata

fn default() -> EventMetadata

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for EventMetadata

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for EventMetadata

fn eq(&self, other: &EventMetadata) -> 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 EventMetadata

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for EventMetadata