Struct Lease 

pub struct Lease<Time>(/* private fields */);

The lease form, its expiry in Time: set by InboxSpec::lease.

Examples

use chrono::{DateTime, Utc};
use ruststream_sqlx::dialect::Column;
use ruststream_sqlx::spec::{Lease, Payload};
use ruststream_sqlx::{InboxSpec, InboxTable};

#[derive(sqlx::FromRow)]
pub struct ScanJob {
    id: i64,
    payload: Vec<u8>,
}

impl InboxTable for ScanJob {
    type Id = i64;
    // A virus scan holds its row by a lease, kept in `locked_until` as a UTC timestamp.
    type Table = InboxSpec<(Lease<DateTime<Utc>>, Payload)>;
    const TABLE: Self::Table = InboxSpec::new("scan_jobs", Column::new("id").generated())
        .lease(Column::new("locked_until"))
        .payload(Column::new("payload"));

    fn id(&self) -> &i64 {
        &self.id
    }
}

Trait Implementations

impl<Time: Debug> Debug for Lease<Time>

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

Formats the value using the given formatter.

impl<Time> Declaration for Lease<Time>

type Form = Set<Lease<Time>>

The form: Lease or Advisory; unset for the row lock form.

type Message = Unset

The message mode: Payload; unset for row mode.

type Key = Unset

The partition key: Key.

type Attempt = Unset

The attempt count: Attempt.

type Headers = Unset

The delivery’s headers: Headers or HeaderFields.

type RetryAfter = Unset

The time a retried row is due: RetryAfter.

type ProcessedAt = Unset

The time a row was processed: ProcessedAt.

type Clock = Unset

The clock: Clock; unset for SystemClock.

type Opening = Unset

What the table’s transactions open at: Opens; unset for the database’s default.

type Fifo = Unset

Groups kept in order: Fifo.

type OwnClaim = Unset

The service’s own claim: own::Claim.

type OwnFetch = Unset

The service’s own fetch: own::Fetch.

type OwnAck = Unset

The service’s own ack: own::Ack.

type OwnRetry = Unset

The service’s own retry: own::Retry.

type OwnRetryAfter = Unset

The service’s own delayed retry: own::RetryAfter.

type OwnDiscard = Unset

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

type OwnDeadLetter = Unset

The service’s own dead letter: own::DeadLetter.

type OwnExtend = Unset

The service’s own lease extension: own::Extend.

type OwnLock = Unset

The service’s own lock: own::Lock.

type OwnUnlock = Unset

The service’s own unlock: own::Unlock.