Struct Headers 

pub struct Headers;

The published headers, kept in one column: set by OutboxSpec::headers. The record implements HeaderRow.

Examples

use std::collections::BTreeMap;

use ruststream_sqlx::HeaderRow;
use ruststream_sqlx::dialect::Column;
use ruststream_sqlx::outbox::spec::Headers;
use ruststream_sqlx::outbox::{self, OutboxSpec, OutboxTable};
use sqlx::types::Json;
use sqlx::{PgConnection, PgPool, Postgres};

#[derive(sqlx::FromRow)]
pub struct OrderEvent {
    id: i64,
    name: String,
    payload: Vec<u8>,
    headers: Option<Json<BTreeMap<String, String>>>,
}

impl OutboxTable for OrderEvent {
    type Id = i64;
    type Table = OutboxSpec<(Headers,)>;
    const TABLE: Self::Table = OutboxSpec::new(
        "outbox",
        Column::new("id"),
        Column::new("name"),
        Column::new("payload"),
    )
    .headers(Column::new("headers"));
}

// A republished record carries the headers it was published with.
impl HeaderRow for OrderEvent {
    type Column = Option<Json<BTreeMap<String, String>>>;

    fn headers_mut(&mut self) -> &mut Self::Column {
        &mut self.headers
    }
}

Trait Implementations

impl Debug for Headers

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

Formats the value using the given formatter.

impl Declaration for Headers

type Headers = Set<Headers>

The headers column: Headers.

type ProcessedAt = Unset

The time a record was processed: ProcessedAt.

type OwnFetch = Unset

The record’s own fetch: own::Fetch.

type OwnAck = Unset

The record’s own ack: own::Ack.

type OwnRetry = Unset

The record’s own retry: own::Retry.

type OwnDiscard = Unset

The record’s own discard: own::Discard.

type OwnRecover = Unset

The record’s own recovery: own::Recover.