Struct PublishOutcome 

pub struct PublishOutcome {
    pub message_id: u64,
    pub delivered: bool,
    pub durable_position: Option<u64>,
    pub reach: Reach,
}

Outcome of a server publish.

Carries the assigned message id plus a genuine delivery ack (delivered = the message was accepted by at least one live subscriber on this publish, after any dedup-on-delivery suppression).

Fields

message_id: u64

Transport-scoped message id assigned to the accepted publish.

TRANSPORT-SCOPED, NOT A DURABLE POSITION (G1, docs/design/wire-durability-gaps-20260831.md): this is a process-local counter (next_message_id, reset to 1 on every construction), so it restarts from 1 with the server and two servers mint the same ids. It is monotonic only within one service instance’s lifetime and identifies the publish on THIS connection’s wire, nothing more. The durable position of a publish on a durable channel is the store-assigned sequence the library now surfaces as ChannelDelivery::durable_position; putting that on the wire ack is the A1 resume lane’s frame decision, not a reinterpretation of this field.

delivered: bool

Whether the message was genuinely delivered to a subscriber. false means the publish was accepted but reached no subscriber (empty channel) or was a duplicate suppressed by dedup-on-delivery.

durable_position: Option<u64>

Store-assigned position of the row this outcome answers for, when the publish is known to have one. Unlike message_id this IS a durable position; the connection process puts it on the wire ack only for a connection that negotiated PUBLISH_ACK_POSITION_VERSION.

reach: Reach

Whom the publish reached, the console tap’s word for it (SRV-012 R10): a subscriber, no subscriber, only subscribers that refused it, or nobody because dedup suppressed it.

Trait Implementations

impl Clone for PublishOutcome

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PublishOutcome

impl Debug for PublishOutcome

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

Formats the value using the given formatter.

impl Eq for PublishOutcome

impl PartialEq for PublishOutcome

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PublishOutcome