Struct TraceEvent 

pub struct TraceEvent {
    pub seq: u64,
    pub time_ms: u64,
    pub source: String,
    pub target: String,
    pub level: Level,
    pub name: String,
    pub fields: BTreeMap<String, FieldValue>,
}

One captured trace event — the same shape as a production log line.

Fields

seq: u64

Global monotonic sequence number across all event names. Reset per seed.

time_ms: u64

Simulation time in milliseconds when the event was captured.

source: String

Originating actor: the ip recorded on the nearest enclosing process or workload span, or "sim" for runner-injected fault events.

target: String

The tracing target (defaults to the emitting module path).

level: Level

Event severity level.

name: String

Event name: the tracing message, e.g. "leader_elected".

fields: BTreeMap<String, FieldValue>

Structured fields recorded on the event.

Implementations

impl TraceEvent

pub fn u64(&self, key: &str) -> Option<u64>

Read field key as a u64. Also accepts non-negative i64 values.

pub fn i64(&self, key: &str) -> Option<i64>

Read field key as an i64. Also accepts u64 values that fit.

pub fn f64(&self, key: &str) -> Option<f64>

Read field key as an f64.

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

Read field key as a bool.

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

Read field key as a string slice.

Values recorded with % (Display) arrive unquoted; values recorded with ? (Debug) keep their Debug formatting (a String recorded with ? includes quotes — prefer % for strings).

Trait Implementations

impl Clone for TraceEvent

fn clone(&self) -> TraceEvent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TraceEvent

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

Formats the value using the given formatter.