Struct Event 

pub struct Event {
    pub level: Level,
    pub code: &'static str,
    pub value: Option<f32>,
}

A structured telemetry event.

An event pairs a Level with a stable, short code - a label such as "battery.low" or "link.lost" rather than a free-form message - so events stay tiny, group cleanly into counts, and need no allocation. An optional value carries an associated measurement, such as the battery level that triggered it.

Fields

level: Level

The event’s severity.

code: &'static str

A stable, short identifier for what happened.

value: Option<f32>

An optional measurement associated with the event.

Implementations

impl Event

pub fn new(level: Level, code: &'static str) -> Self

Creates an event at level with the given code and no value.

Arguments

• level - the event’s severity.
• code - a stable, short identifier for the event.

Returns

The event.

pub fn trace(code: &'static str) -> Self

Creates a Level::Trace event.

Arguments

• code - a stable, short identifier for the event.

Returns

The event.

pub fn debug(code: &'static str) -> Self

Creates a Level::Debug event.

Arguments

• code - a stable, short identifier for the event.

Returns

The event.

pub fn info(code: &'static str) -> Self

Creates a Level::Info event.

Arguments

• code - a stable, short identifier for the event.

Returns

The event.

pub fn warn(code: &'static str) -> Self

Creates a Level::Warn event.

Arguments

• code - a stable, short identifier for the event.

Returns

The event.

pub fn error(code: &'static str) -> Self

Creates a Level::Error event.

Arguments

• code - a stable, short identifier for the event.

Returns

The event.

pub fn with_value(self, value: f32) -> Self

Attaches a measurement to the event.

Arguments

• value - the measurement to associate with the event.

Returns

The event, for chaining.

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 Copy for Event

impl Debug for Event

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

Formats the value using the given formatter.

impl PartialEq for Event

fn eq(&self, other: &Event) -> 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 StructuralPartialEq for Event