Struct TraceSampler 

pub struct TraceSampler { /* private fields */ }

追踪采样器

Implementations

impl TraceSampler

pub fn new(strategy: SamplingStrategy) -> Self

创建新的采样器

pub fn always_on() -> Self

创建始终采样的采样器

pub fn always_off() -> Self

创建从不采样的采样器

pub fn probability(rate: f64) -> Self

创建概率采样器

pub fn trace_id_ratio(ratio: f64) -> Self

创建基于 trace ID 的采样器

pub fn with_attribute( self, key: impl Into<String>, value: impl Into<String>, ) -> Self

添加采样属性

pub fn should_sample( &self, trace_id: &TraceId, name: &str, parent_sampled: Option<bool>, ) -> (SamplingDecision, HashMap<String, String>)

做出采样决策

Trait Implementations

impl Clone for TraceSampler

fn clone(&self) -> TraceSampler

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TraceSampler

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

Formats the value using the given formatter.

impl Default for TraceSampler

fn default() -> Self

Returns the “default value” for a type.