Struct SpanBuilder 

pub struct SpanBuilder { /* private fields */ }

Span 构建器

Implementations

impl SpanBuilder

pub fn new(name: impl Into<String>) -> Self

创建新的 Span 构建器

pub fn with_kind(self, kind: SpanKind) -> Self

设置 Span 类型

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

添加属性

pub fn with_attributes<I, K, V>(self, attributes: I) -> Self

where I: IntoIterator<Item = (K, V)>, K: Into<String>, V: Into<String>,

批量添加属性

pub fn with_event(self, event: SpanEvent) -> Self

添加事件

pub fn with_link(self, link: SpanLink) -> Self

添加链接

pub fn with_start_time(self, time: SystemTime) -> Self

设置开始时间

pub fn with_level(self, level: Level) -> Self

设置日志级别

pub fn start(self) -> Span

构建并开始 Span