Struct Event 

pub struct Event {
    pub event_id: String,
    pub timestamp: DateTime<Utc>,
    pub event_type: EventType,
    pub task_id: Option<String>,
    pub content: Content,
    pub duration_ms: Option<u64>,
    pub attributes: HashMap<String, Value>,
}

A single event in the flat timeline

Fields

event_id: String

Unique event identifier

timestamp: DateTime<Utc>

When this event occurred

event_type: EventType

Type of event

task_id: Option<String>

Optional task grouping ID

content: Content

Multimodal content

duration_ms: Option<u64>

Duration in milliseconds (for tool calls, etc.)

attributes: HashMap<String, Value>

Arbitrary metadata

Implementations

impl Event

pub fn attr_str(&self, key: &str) -> Option<&str>

Return an attribute as trimmed string, ignoring empty values.

pub fn source_schema_version(&self) -> Option<&str>

Return canonical source schema version (source.schema_version) if present.

pub fn source_raw_type(&self) -> Option<&str>

Return canonical source raw type (source.raw_type) if present.

pub fn semantic_group_id(&self) -> Option<&str>

Return canonical semantic group id (semantic.group_id) if present.

pub fn semantic_tool_kind(&self) -> Option<&str>

Return canonical semantic tool kind (semantic.tool_kind) if present.

pub fn semantic_call_id(&self) -> Option<&str>

Resolve a stable tool call id for correlation.

Resolution order:

1. semantic.call_id
2. ToolResult.call_id
3. legacy call_id attribute

Trait Implementations

impl Clone for Event

fn clone(&self) -> Event

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Event

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Event

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Event

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

where __S: Serializer,

Serialize this value into the given Serde serializer.