Module mailbox 

Mailboxes: where messages wait for an actor, independently of its activations.

A mailbox keeps messages in arrival order, which preserves the order of every single sender. Mailbox::receive hands out the oldest message that is not in flight and not deferred by the receiver’s active states, and marks it in flight; Mailbox::ack removes it once its turn is durable; Mailbox::release puts it back when the turn failed, so it is delivered again. Deferred messages are skipped, never removed, so they keep their place.

Structs

Envelope

A message on its way to an actor.

MailboxError

A mailbox failure.

MemoryMailbox

An in-memory mailbox; its messages are lost with the process.

MemoryMailboxes

In-memory mailboxes.

StoreMailbox

A mailbox kept in the actor’s graph store, in graph <address>/mailbox: it survives restarts, and its messages are delivered again in their original order.

StoreMailboxes

Store-backed mailboxes on a node’s storage.

Traits

Mailbox

The mailbox contract: enqueue, ordered receive with deferral, and acknowledge.

MailboxFactory

Creates the mailbox of an address.

Functions

is_deferred

True when an event named name matches one of the vt:defer descriptors.