Struct EventMeta 

pub struct EventMeta {
    pub event_id: String,
    pub occurred_at: DateTime<Utc>,
    pub trace_id: Option<String>,
}

Metadata attached to every metrics event.

This structure provides common identification and timing information that is shared across all event types in the metrics system. Metadata attached to every metrics event.

This structure provides common identification and timing information that is shared across all event types in the metrics system.

Fields

• event_id: Unique identifier for this event (UUID v4 format)
• occurred_at: UTC timestamp when the event occurred
• trace_id: Optional identifier for correlating related events across services

Example

// Create event metadata without trace ID
let meta = EventMeta::new();
assert!(!meta.event_id.is_empty());
assert!(meta.trace_id.is_none());

// Create event metadata with trace ID for distributed tracing
let traced_meta = EventMeta::with_trace_id("req-abc-123");
assert_eq!(traced_meta.trace_id, Some("req-abc-123".to_string()));

Fields

event_id: String

Unique event ID (UUID v4)

occurred_at: DateTime<Utc>

When the event occurred

trace_id: Option<String>

Optional trace ID for correlating request chains

Implementations

impl EventMeta

pub fn new() -> Self

Creates new event metadata with a fresh UUID and current timestamp.

The trace ID is set to None. Use this constructor when you don’t need to correlate this event with other events across service boundaries.

Example

use bamboo_agent::agent::metrics::events::EventMeta;

let meta = EventMeta::new();
assert!(!meta.event_id.is_empty());
assert!(meta.trace_id.is_none());

pub fn with_trace_id(trace_id: impl Into<String>) -> Self

Creates new event metadata with a trace ID for distributed request tracing.

Use this constructor when you need to correlate this event with other events that are part of the same logical request or operation flow.

Arguments

• trace_id - A unique identifier for the request chain (will be converted to String)

Example

use bamboo_agent::agent::metrics::events::EventMeta;

let meta = EventMeta::with_trace_id("req-12345");
assert_eq!(meta.trace_id, Some("req-12345".to_string()));

Trait Implementations

impl Clone for EventMeta

fn clone(&self) -> EventMeta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EventMeta

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

Formats the value using the given formatter.

impl Default for EventMeta

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for EventMeta

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for EventMeta

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

where __S: Serializer,

Serialize this value into the given Serde serializer.