Enum EventLine 

pub enum EventLine {
    ToolStart {
        calls: Vec<ToolCallTrace>,
        ts: String,
    },
    ToolResult {
        call_id: String,
        duration_ms: u64,
        ts: String,
    },
    Done {
        model: String,
        iterations: usize,
        stop_reason: String,
        usage: Usage,
        ts: String,
    },
    UserSteered {
        content: String,
        ts: String,
    },
}

A trace entry persisted alongside messages.

Captures the how of agent execution (which tools ran, how long they took, why the agent stopped, what it cost) — information that doesn’t fit in the message stream itself but is invaluable for debugging.

Variants

ToolStart

One round of tool calls dispatched by the model.

Fields

calls: Vec<ToolCallTrace>

ts: String

ToolResult

A single tool call completed.

Fields

call_id: String

duration_ms: u64

ts: String

Done

Agent run finished — final metadata and token usage.

Fields

model: String

iterations: usize

stop_reason: String

usage: Usage

ts: String

UserSteered

User steered the agent mid-stream.

Fields

content: String

ts: String

Implementations

impl EventLine

pub fn from_agent_event(event: &AgentEvent) -> Option<Self>

Build a trace entry from an AgentEvent. Returns None for events that don’t carry useful trace information.

Trait Implementations

impl Clone for EventLine

fn clone(&self) -> EventLine

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EventLine

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for EventLine

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for EventLine

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

where __S: Serializer,

Serialize this value into the given Serde serializer.