Struct TraceContext 

pub struct TraceContext { /* private fields */ }

追踪上下文，包含 trace 和 span 信息

Implementations

impl TraceContext

pub fn new() -> Self

创建新的追踪上下文

pub fn from_span_context(span_context: &SpanContext) -> Self

从 OpenTelemetry SpanContext 创建

pub fn to_span_context(&self) -> SpanContext

转换为 OpenTelemetry SpanContext

pub fn trace_id(&self) -> TraceId

获取 trace ID

pub fn span_id(&self) -> SpanId

获取 span ID

pub fn set_baggage(&mut self, key: String, value: String)

设置 baggage 项

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

获取 baggage 项

pub fn baggage(&self) -> &HashMap<String, String>

获取所有 baggage

pub fn is_sampled(&self) -> bool

检查是否采样

Trait Implementations

impl Clone for TraceContext

fn clone(&self) -> TraceContext

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TraceContext

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

Formats the value using the given formatter.

impl Default for TraceContext

fn default() -> Self

Returns the “default value” for a type.

impl TraceContextExt for TraceContext

fn current() -> TraceContext

获取当前上下文

fn set_current(context: TraceContext)

设置当前上下文

fn with<F, R>(context: TraceContext, f: F) -> R

where F: FnOnce() -> R,

在指定上下文中执行闭包