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feat(mailbox): default mountMailbox's SSE bus to in-process (CL-8775) #30

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feat(mailbox): default mountMailbox's SSE bus to in-process (CL-8775) #30

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11 changes: 9 additions & 2 deletions src/mount.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@ import type { Thread } from "@intx/types/runtime";
import type { MailboxDb } from "./db.js";
import type { NativeMailboxStore } from "./native-store.js";
import {
createInMemoryMailboxEventBus,
publishMailboxEvent,
type MailboxEvent,
type MailboxEventBus,
Expand All @@ -30,7 +31,12 @@ export type OutgoingMailboxMessage = {

export type MountMailboxOpts = {
db: MailboxDb;
bus: MailboxEventBus;
/**
* SSE live-update bus only. Mail is Postgres. Defaults to an in-process
* bus (one hub process). Pass a shared bus if several hub processes must
* fan the same inbox events.
*/
bus?: MailboxEventBus;
resolvePrincipal: (
ctx: unknown,
) => Promise<ResolvedPrincipal | null> | ResolvedPrincipal | null;
Expand Down Expand Up @@ -202,7 +208,8 @@ export function mountMailbox<E extends Env>(
app: Hono<E>,
opts: MountMailboxOpts,
): Hono<E> {
const { db, bus, resolvePrincipal, senderAddressFor, deliver } = opts;
const { db, resolvePrincipal, senderAddressFor, deliver } = opts;
const bus = opts.bus ?? createInMemoryMailboxEventBus();
const heartbeatIntervalMs =
opts.heartbeatIntervalMs ?? DEFAULT_HEARTBEAT_INTERVAL_MS;
if (!Number.isFinite(heartbeatIntervalMs) || heartbeatIntervalMs <= 0) {
Expand Down
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