Struct TransportMessageMetadata 

pub struct TransportMessageMetadata {
    pub encoding: Option<String>,
    pub content_type: Option<String>,
    pub correlation_id: Option<String>,
    pub headers: HashMap<String, String>,
    pub priority: Option<u8>,
    pub ttl: Option<u64>,
    pub is_heartbeat: Option<bool>,
}

Metadata associated with a TransportMessage.

Fields

encoding: Option<String>

The encoding of the message payload (e.g., “gzip”).

content_type: Option<String>

The MIME type of the message payload (e.g., “application/json”).

correlation_id: Option<String>

An ID used to correlate requests and responses.

headers: HashMap<String, String>

A map of custom headers.

priority: Option<u8>

The priority of the message (higher numbers indicate higher priority).

ttl: Option<u64>

The time-to-live for the message, in milliseconds.

is_heartbeat: Option<bool>

A marker indicating that this is a heartbeat message.

Implementations

impl TransportMessageMetadata

pub fn validate(&self) -> Result<(), &'static str>

Validate metadata constraints

pub fn with_content_type( content_type: impl Into<String>, ) -> TransportMessageMetadata

Creates a new TransportMessageMetadata with a specified content type.

pub fn with_correlation_id( correlation_id: impl Into<String>, ) -> TransportMessageMetadata

Creates a new TransportMessageMetadata with a specified correlation ID.

pub fn with_header( self, key: impl Into<String>, value: impl Into<String>, ) -> TransportMessageMetadata

Adds a header to the metadata using a builder pattern.

pub const fn with_priority(self, priority: u8) -> TransportMessageMetadata

Sets the priority of the message.

pub const fn with_ttl(self, ttl: Duration) -> TransportMessageMetadata

Sets the time-to-live for the message.

pub const fn heartbeat(self) -> TransportMessageMetadata

Marks the message as a heartbeat.

Trait Implementations

impl Clone for TransportMessageMetadata

fn clone(&self) -> TransportMessageMetadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TransportMessageMetadata

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

Formats the value using the given formatter.

impl Default for TransportMessageMetadata

fn default() -> TransportMessageMetadata

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for TransportMessageMetadata

fn deserialize<__D>( __deserializer: __D, ) -> Result<TransportMessageMetadata, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for TransportMessageMetadata

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

where __S: Serializer,

Serialize this value into the given Serde serializer.