Struct PubSubMessage 

pub struct PubSubMessage { /* private fields */ }

A message delivered by a PubSubSubscriber.

ack and nack(requeue = true) are native. nack(requeue = false) acknowledges: Pub/Sub has no “drop without redelivery” beyond acknowledgement - dead-lettering is the subscription’s redrive policy, driven by repeated nacks and expired deadlines, not a per-message verb. On an exactly-once subscription the confirmed forms are used, so Ok from ack means the broker accepted it.

Trait Implementations

impl Debug for PubSubMessage

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

Formats the value using the given formatter.

impl IncomingMessage for PubSubMessage

fn payload(&self) -> &[u8]

Returns the raw payload of the message.

fn headers(&self) -> &Headers

Returns the headers attached to the message.

async fn ack(self) -> Result<(), AckError>

Acknowledges successful processing. Consumes the message handle.

async fn nack(self, requeue: bool) -> Result<(), AckError>

Negatively acknowledges the message. When requeue is true the broker should redeliver according to its own retry policy; when false it should drop or dead-letter the message.

fn partition_key(&self) -> Option<&[u8]>

Returns the routing key the broker partitioned this message by, or None when the message carries no key.

fn supports_nack_after(&self) -> bool

Reports whether this transport can honor nack_after natively.

fn nack_after( self, delay: Duration, ) -> impl Future<Output = Result<(), AckError>> + Send

where Self: Sized,

Negatively acknowledges the message, asking the broker to redeliver it no sooner than delay from now.

impl Partitioned for PubSubMessage

fn partition_key(&self) -> Option<&[u8]>

Returns the partition key for this item, or None if the broker should pick a partition.