Struct Notification 

#[non_exhaustive]
pub struct Notification {
    pub process_id: i32,
    pub channel: String,
    pub payload: String,
}

An asynchronous notification received from PostgreSQL.

Notifications are delivered via the LISTEN/NOTIFY protocol. A notification includes the process ID of the notifying backend, the channel name, and an optional payload string.

Notifications can arrive at any time — they are interleaved with other backend messages. The connection buffers them in an internal queue. Use Connection::notifications or Connection::drain_notifications to retrieve buffered notifications, or Connection::wait_for_notification to block until one arrives.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

process_id: i32

Backend process ID that sent the notification.

channel: String

Channel name.

payload: String

Payload string (empty string if no payload was sent).

Trait Implementations

impl Clone for Notification

fn clone(&self) -> Notification

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Notification

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

Formats the value using the given formatter.

impl PartialEq for Notification

fn eq(&self, other: &Notification) -> 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 Eq for Notification

impl StructuralPartialEq for Notification