Struct MessageMeta 

pub struct MessageMeta {
    pub traceparent: Option<String>,
    pub tracestate: Option<String>,
    pub baggage: Option<String>,
    pub extra: BTreeMap<String, Value>,
}

Transport-level envelope for cross-cutting context that travels alongside (not inside) a message’s business payload.

Modelled on HTTP headers: transport concerns only. Do NOT put business data, secrets, or domain identifiers here.

Reserved keys in v1 are the W3C Trace Context headers (traceparent, tracestate, baggage); wire-compatible with every OpenTelemetry SDK. All other keys land in extra via #[serde(flatten)] and round-trip untouched.

Fields

traceparent: Option<String>

tracestate: Option<String>

baggage: Option<String>

extra: BTreeMap<String, Value>

Free-form extension fields. Applications using this library serialize their own keys here and are responsible for their own typing.

Trait Implementations

impl Clone for MessageMeta

fn clone(&self) -> MessageMeta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MessageMeta

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

Formats the value using the given formatter.

impl Default for MessageMeta

fn default() -> MessageMeta

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for MessageMeta

where MessageMeta: Default,

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for MessageMeta

fn eq(&self, other: &MessageMeta) -> 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 MessageMeta

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for MessageMeta