Struct EnvelopeMetadata 

pub struct EnvelopeMetadata { /* private fields */ }

Metadata carried with a message without imposing broker semantics.

Implementations

impl EnvelopeMetadata

pub fn new() -> Self

Creates empty envelope metadata.

pub fn correlation_id(self, correlation_id: impl Into<String>) -> Result<Self>

Sets a bounded correlation identifier.

pub fn causation_id(self, causation_id: impl Into<String>) -> Result<Self>

Sets a bounded causation identifier.

pub fn traceparent(self, traceparent: impl Into<String>) -> Result<Self>

Sets validated W3C trace context for downstream propagation.

pub fn header( self, name: impl Into<String>, value: impl Into<String>, ) -> Result<Self>

Adds a bounded transport-neutral header.

Header values remain available to application code but are never shown by this type’s Debug implementation.

pub fn correlation_id_value(&self) -> Option<&str>

Returns the correlation identifier, when present.

pub fn causation_id_value(&self) -> Option<&str>

Returns the causation identifier, when present.

pub fn traceparent_value(&self) -> Option<&str>

Returns the propagated W3C traceparent, when present.

pub fn headers(&self) -> &BTreeMap<String, String>

Returns application-visible envelope headers.

Trait Implementations

impl Clone for EnvelopeMetadata

fn clone(&self) -> EnvelopeMetadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EnvelopeMetadata

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

Formats the value using the given formatter.

impl Default for EnvelopeMetadata

fn default() -> EnvelopeMetadata

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for EnvelopeMetadata

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for EnvelopeMetadata

impl PartialEq for EnvelopeMetadata

fn eq(&self, other: &EnvelopeMetadata) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for EnvelopeMetadata

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 EnvelopeMetadata