Struct TraceContext

pub struct TraceContext {
    pub trace_id: TraceId,
    pub span_id: SpanId,
    pub flags: u8,
}

W3C Trace Context, parsed from the traceparent header.

Format: 00-<trace-id-hex>-<parent-id-hex>-<flags-hex> We currently ignore tracestate (kept for future propagation).

Fields

trace_id: TraceId

span_id: SpanId

flags: u8

Trace flags. Bit 0 = sampled.

Implementations

impl TraceContext

pub fn new(trace_id: TraceId, span_id: SpanId) -> Self

Build a new trace context with the given trace + span IDs. Flags default to 0x01 (sampled).

pub fn fresh() -> Self

Generate a fresh trace context (new trace, new root span).

pub fn child(&self) -> Self

Return a new context with the same trace_id but a fresh span_id. Use this to record a child operation within the same trace.

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<'de> Deserialize<'de> for TraceContext

fn deserialize<D: Deserializer<'de>>(d: D) -> Result<Self, D::Error>

Deserialize this value from the given Serde deserializer.

impl Display for TraceContext

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

Formats the value using the given formatter.

impl FromStr for TraceContext

type Err = Error

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self>

Parses a string s to return a value of this type.

impl Hash for TraceContext

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for TraceContext

fn eq(&self, other: &TraceContext) -> 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 Serialize for TraceContext

fn serialize<S: Serializer>(&self, s: S) -> Result<S::Ok, S::Error>

Serialize this value into the given Serde serializer.

impl Copy for TraceContext

impl Eq for TraceContext

impl StructuralPartialEq for TraceContext